Carrier 50HE003 006 User Manual
50HJ004---007  
50HE003---006  
Single---Package Rooftop Electric Cooling  
Units with Optional Electric Heat  
Installation Instructions  
TABLE OF CONTENTS  
SAFETY CONSIDERATIONS  
Page  
Installation and servicing of air-conditioning equipment can be  
hazardous due to system pressure and electrical components.  
Only trained and qualified service personnel should install, repair,  
or service air-conditioning equipment.  
Untrained personnel can perform basic maintenance functions of  
cleaning coils and filters and replacing filters. All other operations  
should be performed by trained service personnel. When working  
on air-conditioning equipment, observe precautions in the  
literature, tags and labels attached to the unit, and other safety  
precautions that may apply.  
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . 1  
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Step 1--Provide Unit Support . . . . . . . . . . . . . . . . . . . . . .  
1
2
ROOF CURB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
SLAB MOUNT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
ALTERNATE UNIT SUPPORT . . . . . . . . . . . . . . . . . 2  
Step 2--Field Fabricate Ductwork . . . . . . . . . . . . . . . . . . .  
2
Follow all safety codes. Wear safety glasses and work gloves. Use  
quenching cloth for unbrazing operations. Have fire extinguishers  
available for all brazing operations.  
Step 3--Install External Trap for Condensate Drain . . . . . . . 2  
Step 4--Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . . 4  
POSITIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Step 5 — Make Electrical Connections . . . . . . . . . . . . . . . . 8  
FIELD POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . 8  
FIELD CONTROL WIRING . . . . . . . . . . . . . . . . . . . . 8  
HEAT ANTICIPATOR SETTINGS . . . . . . . . . . . . . . . 8  
Step 6 — Adjust Factory-Installed Options . . . . . . . . . . . 29  
COBRA™ ENERGY RECOVERY UNITS . . . . . . . 29  
Recognize safety information. This is the safety--alert symbol  
.
When you see this symbol on the furnace and in  
instructions or manuals, be alert to the potential for personal  
injury.  
Understand the signal words DANGER, WARNING, and  
CAUTION. These words are used with the safety--alert symbol.  
DANGER identifies the most serious hazards which will result in  
severe personal injury or death. WARNING signifies a hazard  
which could result in personal injury or death. CAUTION is used  
to identify unsafe practices which may result in minor personal  
injury or product and property damage. NOTE is used to  
highlight suggestions which will result in enhanced installation,  
reliability,or operation.  
HUMIDI-MIZER™ ADAPTIVE  
DEHUMIDIFICATION SYSTEM . . . . . . . . . . . . . . 29  
DISCONNECT SWITCH . . . . . . . . . . . . . . . . . . . . . 29  
MANUAL OUTDOOR-AIR DAMPER . . . . . . . . . . 29  
CONVENIENCE OUTLET . . . . . . . . . . . . . . . . . . . 29  
NOVAR CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . 29  
PREMIERLINK™ CONTROL . . . . . . . . . . . . . . . . . 31  
!
WARNING  
ELECTRICAL SHOCK HAZARD  
Failure to follow this warning could cause personal  
injury or death.  
OPTIONAL ECONOMI$ER IV AND  
ECONOMI$ER2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34  
Before performing service or maintenance operations  
on unit, turn off main power switch to unit and install  
lockout tag. Ensure electrical service to rooftop unit  
agrees with voltage and amperage listed on the unit  
rating plate.  
ECONOMI$ER IV STANDARD SENSORS . . . . . . 35  
ECONOMI$ER IV CONTROL MODES . . . . . . . . . 36  
Step 7 — Adjust Evaporator-Fan Speed . . . . . . . . . . . . . . 41  
PRE--START--UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58  
START--UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58  
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62  
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67  
START--UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . 72  
INSTALLATION  
Unit is shipped in the vertical discharge configuration. To convert  
to horizontal discharge application, remove duct opening covers.  
Using the same screws, install covers on duct openings in  
basepan of unit with insulation-side down. Seals around  
openings must be tight. (See Fig. 1.)  
1
D ALT  
DRAIN  
HOLE  
ROOF CURB  
ACCESSORY  
UNIT  
SIZE  
CONNECTOR  
PKG. ACCY.  
ACCESSORY  
POWER  
A
B
C
GAS  
POWER  
CONTROL  
1 -2  
[356]  
2 -0  
[610]  
CRRFCURB001A01  
CRRFCURB002A01  
3
3
3
CRBTMPWR001A01  
CRBTMPWR002A01  
/
[19] NPT  
4
/
50HJ004-007  
50HE003-006  
[19] 4NPT  
11/4 [31.7]  
1 -911  
/
1 -4  
13/4  
[44.5]  
/
/
2
1
1
1
[5511]6 [406]  
[12.7]  
[12.7]  
2
/
2
CRBTMPWR003A01  
CRBTMPWR004A01  
/
[19] NPT  
4
[12.7] NPT  
3
/
[19] 4NPT  
NOTES:  
11/4 [31.7]  
1. Roof curb accessory is shipped disassembled.  
2. Insulated panels.  
3. Dimensions in [ ] are in millimeters.  
4. Roof curb: galvanized steel.  
5. Attach ductwork to curb (flanges of duct rest  
on curb).  
6. Service clearance: 4 ft on each side.  
7.  
Direction of airflow.  
8. Connector packages CRBTMPWR001A01  
and 002A01 are for thru-the-curb type gas.  
Packages CRBTMPWR003A01 and 004A01  
are for thru-the-bottom type gas connections.  
C06155  
Fig. 2 --- Roof Curb Details  
3
Step 4 —Rig and Place Unit  
Inspect unit for transportation damage, and file any claim with  
transportation agency. Keep unit upright and do not drop.  
Spreader bars are not required if top crating is left on unit, and  
rollers may be used to move unit across a roof. Level by using  
unit frame as a reference. See Table 1, 2 and Fig. 6 for additional  
information. Operating weight is shown in Table 1, 2 and Fig. 6.  
Lifting holes are provided in base rails as shown in Fig. 7. Refer  
to rigging instructions on unit.  
CONDENSATE PAN (SIDE VIEW)  
HORIZONTAL  
DRAIN OUTLET  
!
WARNING  
DRAIN PLUG  
PERSONAL INJURY AND PROPERTY DAMAGE  
HAZARD  
NOTE: Drain plug is shown in factory-installed position.  
C06003  
Failure to follow this warning could result in personal  
injury, death and property damage.  
Fig. 4 --- Condensate Drain Connection  
All panels must be in place when rigging and lifting.  
Positioning  
Maintain clearance around and above unit to provide minimum  
distance from combustible materials, proper airflow, and service  
access. (See Fig. 7, 8 and 9.)  
Position unit on roof curb so that the following clearances are  
1
maintained: / in. clearance between the roof curb and the base  
4
rail inside the front and rear, 0.0 in. clearance between the roof  
curb and the base rail inside on the duct end of the unit. This will  
result in the distance between the roof curb and the base rail  
inside on the condenser end of the unit being approximately  
equal to Fig. 2, section C-C.  
Do not install unit in an indoor location. Do not locate unit air  
inlets near exhaust vents or other sources of contaminated air.  
NOTE: Trap should be deep enough to offset maximum unit static  
difference. A 4-in. trap is recommended.  
C06004  
Fig. 5 --- Condensate Drain Piping Details  
Although unit is weatherproof, guard against water from higher  
level runoff and overhangs.  
After unit is in position, remove polyethylene shipping wrapper  
and top crating.  
MAXIMUM ALLOWABLE  
DIFFERENCE (in.)  
A-B  
B-C  
A-C  
0.5  
1.0  
1.0  
C06110  
Fig. 3 --- Unit Leveling Tolerances  
4
NOTES:  
1. Place unit on curb as close as possible to the duct end.  
2. Dimension in ( ) is in millimeters.  
3. Hook rigging shackles through holes in base rail as shown in detail "A." Holes in base rails are centered around the unit center of gravity. Use wooden  
top skid when rigging to prevent rigging straps from damaging unit.  
4. Weights include base unit without economizer. See Table 1 for unit operating weights with accessory economizer.  
5. Weights include base unit without the Humidi-MiZerTM adaptive dehumidification system. See Table 1 for unit operating weights with the  
Humidi-MiZer system.  
C06111  
Fig. 6 --- Rigging Details  
OPERATING  
WEIGHT  
DIMENSIONS  
“B”  
UNIT  
50HE  
“A”  
“C”  
“C”  
lb  
kg  
in.  
mm  
1872  
1872  
1872  
1872  
in.  
mm  
in.  
mm  
847  
847  
847  
847  
003  
004  
005  
006  
435  
445  
465  
520  
197  
202  
211  
236  
73.69  
73.69  
73.69  
73.69  
35.50  
35.50  
35.50  
35.50  
902  
902  
902  
902  
33.31  
33.31  
33.31  
33.31  
OPERATING  
WEIGHT  
DIMENSIONS  
“B”  
UNIT  
50HJ  
“A”  
lb  
kg  
in.  
mm  
1872  
1872  
1872  
1872  
in.  
mm  
902  
902  
902  
902  
in.  
mm  
847  
847  
847  
847  
004  
005  
006  
007  
530  
540  
560  
635  
240  
245  
254  
288  
73.69  
73.69  
73.69  
73.69  
35.50  
35.50  
35.50  
35.50  
33.31  
33.31  
33.31  
33.31  
!
WARNING  
PERSONAL INJURY AND PROPERTY DAMAGE  
HAZARD  
Failure to follow this warning could result in personal  
injury, death and property damage.  
All panels must be in place when rigging and lifting.  
C06208  
Fig. 7 --- Roof Curb Alignment  
5
6
7
Step 5 —Make Electrical Connections  
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American  
Wire Gauge) insulated wire (35_C minimum). For 50 to 75 ft, use  
no. 16 AWG insulated wire (35_C minimum). For over 75 ft, use  
no. 14 AWG insulated wire (35_C minimum). All wire larger  
than no. 18 AWG cannot be directly connected to the thermostat  
and will require a junction box and splice at the thermostat.  
!
WARNING  
ELECTRICAL SHOCK HAZARD  
Failure to follow this warning could result in personal  
injury or death,  
1. Connect thermostat wires to screw terminals of lowvoltage  
terminal board.  
Unit cabinet must have an uninterrupted, unbroken  
electrical ground to minimize the possibility of personal  
injury if an electrical fault should occur. This ground may  
consist of electrical wire connected to unit ground lug in  
control compartment, or conduit approved for electrical  
ground when installed in accordance with NEC (National  
Electrical Code), ANSI/NFPA (National Fire Protection  
Association), latest edition, and local electrical codes. Do  
not use gas piping as an electrical ground.  
2. Pass the control wires through the hole provided in the  
control box.  
3. Some models may be equipped with a raceway built into  
the corner post on the left side of control box (See Fig.  
13.) This raceway provides the required clearance between  
high--voltage and low voltage wiring. For models without  
a raceway, ensure to provide the NEC required clearance  
between high--voltage and low--voltage wiring.  
Heat Anticipator Settings  
Set heat anticipator settings at 0.8 amp for first stage and 0.3 for  
second stage heating.  
Field Power Supply  
All units except 208/230-v units are factory wired for the voltage  
shown on the nameplate. If the 208/230-v unit is to be connected  
to a 208-v power supply, the transformer must be rewired by  
disconnecting the black wire from the 230-v 1/4--in. terminal on  
the transformer and connecting it to the 200-v 1/4--in. terminal  
from the transformer.  
R
G
COOL STAGE 1  
FAN  
Y1/W2  
G
Y1  
HEAT STAGE 1  
COOL STAGE 2  
HEAT STAGE 2  
24 VAC HOT  
W/W1  
Y/Y2  
O/W2  
R
WIRE  
Y2  
CONNECTIONS  
TO  
W1  
W2  
C
LOW-VOLTAGE  
SECTION  
24 VAC COM  
N/A  
C
Refer to unit label diagram for additional information. Pigtails  
are provided for field service. Use factory-supplied splices or UL  
(Underwriters’ Laboratories) approved copper connector.  
IPD/X  
OUTDOOR AIR  
SENSOR  
S1  
S2  
When installing units, provide a disconnect per NEC.  
THERMOSTAT DIPSWITCH SETTINGS  
ON  
All field wiring must comply with NEC and local  
requirements.  
OFF  
B
C
D
A
LEGEND  
Field Wiring  
Install field wiring as follows:  
NOTE: Underlined letter indicates active thermostat output when  
configured for A/C operation.  
1. Install conduit through side panel openings. For units  
without electric heat, install conduit between disconnect  
and control box.  
C06008  
Fig. 10 --- Low--Voltage connections With or  
Without Economizer or Two--Position Damper  
2. Install power lines to terminal connections as shown in  
Fig. 12.  
3. For units with electric heat, refer to Accessory Electric  
Heat Installation Instructions.  
THERMOSTAT CONTROL  
CONNECTION  
BOARD  
CONTROL  
CONNECTION  
BOARD  
During operation, voltage to compressor terminals must bewithin  
range indicated on unit nameplate (also see Table 3 and 4). On  
3--phase units, voltages between phases must be balanced within  
2% and the current within 10%. Use the formula shown in Table  
3 and 4, Note 2, to determine the percentage of voltage  
imbalance. Operation on improper line voltage or excessive phase  
imbalance constitutes abuse and may cause damage to electrical  
components. Such operation invalidates any applicable Carrier  
warranty.  
24 VAC  
RMTOCC  
CMPSAFE  
FSD  
R
G
R
R
Y1  
Y2  
W1  
W2  
G
Y1  
Y2  
W1  
W2  
G
Y2  
W1  
SFS  
NOT USED  
NOTE: If accessory thru-the-bottom connections and roof curb  
are used, refer to the Thru-the-Bottom Accessory Installation  
Instructions for information on wiring the unit.  
C
X
C
X
C
X
C
C06009  
Field Control Wiring  
Fig. 11 --- Low--Voltage Connections  
(Units with PremierLinkt Controls)  
Install  
a
Carrier-approved accessory thermostat assembly  
according to installation instructions included with the accessory.  
Locate thermostat assembly on a solid wall in the conditioned  
space to sense average temperature in accordance with thermostat  
installation instructions.  
Route thermostat cable or equivalent single leads of colored wire  
from subbase terminals through connector on unit to low-voltage  
connections (shown in Fig. 10 and 11).  
8
Table 1—Physical Data 50HJ  
BASE UNIT 50HJ  
004  
005  
006  
007  
NOMINAL CAPACITY  
OPERATING WEIGHT (lb)  
Unit  
Humidi-MiZer™ Adaptive Dehumidification System  
EconoMi$er IV  
Roof Curb  
COMPRESSOR  
Quantity  
Oil (oz)  
REFRIGERANT TYPE  
Expansion Device  
Operating Charge (lb-oz)  
Standard Unit  
Unit With Humidi-Mizer Adaptive Dehumidification System  
CONDENSER FAN  
Quantity...Diameter (in.)  
Nominal Cfm  
Motor Hp...Rpm  
Watts Input (Total)  
CONDENSER COIL  
Rows...Fins/in.  
Total Face Area (sq ft)  
EVAPORATOR COIL  
Standard Unit  
3
4
5
6
435  
15  
50  
445  
23  
50  
465  
25  
50  
540  
29  
50  
115  
115  
115  
115  
Scroll  
R-22  
1
42  
1
53  
1
50  
1
60  
Acutrol™ Metering Device  
5-8  
12-5  
10-2  
18-8  
10-0  
20-5  
12- 8  
23-14  
Propeller  
1...22  
3500  
/8...825  
180  
1...22  
3500  
/8...825  
1...22  
4100  
/ ...1100  
1...22  
4100  
/ ...1100  
1
1
1
1
4
4
180  
320  
320  
Enhanced Copper Tubes, Aluminum Lanced Fins  
1...17  
14.6  
2...17  
16.5  
2...17  
16.5  
2...17  
21.3  
Enhanced Copper Tubes, Aluminum Double-Wavy Fins  
Rows...Fins/in.  
2...15  
5.5  
2...15  
5.5  
4...15  
5.5  
4...15  
7.3  
Total Face Area (sq ft)  
Unit with Humidi-Mizer Adaptive Dehumidification System  
Rows...Fins/in.  
Total Face Area (sq ft)  
EVAPORATOR FAN  
Quantity...Size (in.)  
Nominal Cfm  
1...17  
3.9  
2...17  
3.9  
2...17  
3.9  
2...17  
5.2  
Centrifugal Type, Belt Drive  
1...10 x 10  
1200  
1.20  
2.40  
48  
1...10 x 10  
1600  
1.20  
2.40  
48  
1...10 x 10  
2000  
1.30/2.40*  
2.90  
1...10 x 10  
2400  
2.40  
2.90  
56  
Maximum Continuous Bhp  
Std  
Hi-Static  
Std  
Hi-Static  
Std  
Hi-Static  
Motor Frame Size  
Fan Rpm Range  
56  
56  
56  
56  
56  
680-1044  
1075-1455  
Ball  
770-1185  
1075-1455  
Ball  
2100  
1.9/2.9  
1035-1460/1035---1460*  
1120-1585  
1300-1685  
Ball  
2100  
2.4/3.4  
1300-1685  
Ball  
2100  
Motor Bearing Type  
Maximum Fan Rpm  
Motor Pulley Pitch Diameter A/B (in.)  
2100  
Std  
Hi-Static  
Std  
Hi-Static  
Std  
Hi-Static  
Std  
Hi-Static  
1.9/2.9  
2.8/3.8  
2.4/3.4  
2.8/3.8  
3.4/4.4  
3.4/3.4  
1/  
1
5
5
5
7
Nominal Motor Shaft Diameter (in.)  
Fan Pulley Pitch Diameter (in.)  
Belt — Type...Length (in.)  
/
/
/
/
/
2
8
2
8
8
8
8
5
/
7/  
8
4.5  
4.5  
1...A...36  
1...A...39  
4.0  
4.5  
1...A...36  
1...A...39  
4.0  
4.5  
1....4...40  
1...A...40  
3.7  
4.5  
1...A...38  
1...A...40  
Pulley Center Line Distance (in.)  
10.0-12.4  
10.0-12.4  
14.7-15.5  
14.7-15.5  
Std  
Hi-Static  
Std  
Hi-Static  
Std  
Hi-Static  
Std  
Hi-Static  
Speed Change per Full Turn of  
65  
65  
5
70  
65  
5
75  
60  
6
95  
60  
5
Movable Pulley Flange (rpm)  
Movable Pulley Maximum Full  
Turns from Closed Position  
Factory Setting — Full Turns Open  
6
6
5
5
3
3
3
3
1
1
1
1
3 /  
3 /  
3 /  
3 /  
2
2
2
2
Factory Speed Setting (rpm)  
826  
936  
1248  
1304  
1233  
1233  
1396  
1396  
5
5
5
5
Fan Shaft Diameter at Pulley (in.)  
HIGH-PRESSURE SWITCH (psig)  
Standard Compressor Internal Relief  
Cutout  
/
/
/
/
8
8
8
8
450 ± 50  
428  
320  
Reset (Auto.)  
LOSS-OF-CHARGE/LOW-PRESSURE  
SWITCH (Liquid LIne) (psig)  
Cutout  
Reset (Auto.)  
FREEZE PROTECTION THERMOSTAT  
Opens (F)  
Closes (F)  
OUTDOOR-AIR INLET SCREENS  
RETURN-AIR FILTERS  
Quantity...Size (in.)  
7 ± 3  
22 ± 5  
30  
45  
Cleanable. Screen quantity and size varies with option selected.  
Throwaway  
2...16 x 25 x 2  
2...16 x 16 x 2  
LEGEND  
Bhp — Brake Horsepower  
*Single phase/three phase.  
9
Table 2—Physical Data 50HE  
BASE UNIT 50HE  
003  
004  
005  
006  
NOMINAL CAPACITY  
OPERATING WEIGHT (lb)  
Unit  
Humidi-MiZer™ Adaptive Dehumidification System  
EconoMi$er IV  
Roof Curb  
COMPRESSOR  
Quantity  
Oil (oz)  
REFRIGERANT TYPE  
Expansion Device  
Operating Charge (lb-oz)  
Standard Unit  
Unit With Humidi-Mizer Adaptive Dehumidification System  
CONDENSER FAN  
Quantity...Diameter (in.)  
Nominal Cfm  
Motor Hp...Rpm  
Watts Input (Total)  
CONDENSER COIL  
Rows...Fins/in.  
Total Face Area (sq ft)  
EVAPORATOR COIL  
Standard Unit  
2
3
4
5
435  
13  
50  
445  
15  
50  
465  
23  
50  
635  
25  
50  
115  
115  
115  
115  
Scroll  
1
25  
1
42  
1
56  
1
53  
R-22  
Acutrol™ Metering Device  
5 --- 3  
10 --- 2  
7 --- 11  
14 --- 0  
8 --- 8  
14---13  
Propeller  
1...22  
12---11  
21 --- 0  
1...22  
3000  
/8...825  
180  
1...22  
3500  
/8...825  
180  
1...22  
4100  
/ ...1100  
3500  
/8...825  
180  
1
1
1
1
4
320  
Enhanced Copper Tubes, Aluminum Lanced Fins  
1...17  
14.6  
1...17  
14.6  
2...17  
16.5  
2...17  
16.5  
Enhanced Copper Tubes, Aluminum Double-Wavy Fins  
Rows...Fins/in.  
2...15  
4.2  
2...15  
5.5  
2...15  
5.5  
4...15  
5.5  
Total Face Area (sq ft)  
Unit with Humidi-Mizer Adaptive Dehumidification System  
Rows...Fins/in.  
Total Face Area (sq ft)  
EVAPORATOR FAN  
Quantity...Size (in.)  
Nominal Cfm  
1...17  
3.5  
1...17  
3.9  
2...17  
3.9  
2...17  
3.9  
Centrifugal Type, Belt Drive  
1...10 x 10  
800  
0.58  
1...10 x 10  
1200  
1.20  
2.40  
48  
56  
1620  
680-1044  
1075-1455  
Ball  
1...10 x 10  
1600  
1.20  
2.40  
48  
56  
1620  
770-1185  
1075-1455  
Ball  
1...10 x 10  
2000  
1.30/2.40*  
2.90  
48/56*  
56  
1725  
1035-1460  
1300-1685  
Ball  
2100  
2.4/3.4  
Maximum Continuous Bhp  
Std  
Hi-Static  
Std  
Motor Frame Size  
48  
Hi-Static  
Motor Rpm  
Fan Rpm Range  
1620  
400-1000  
Std  
Hi-Static  
Motor Bearing Type  
Maximum Fan Rpm  
Motor Pulley Pitch Diameter A/B (in.)  
Ball  
1620  
2.4/3.2  
2100  
2100  
1.9/2.0  
Std  
Hi-Static  
Std  
Hi-Static  
Std  
Hi-Static  
Std  
Hi-Static  
1.9/2.9  
2.8/3.8  
2.8/3.8  
3.4/4.4  
5
7
1/  
1
5
5
5
Nominal Motor Shaft Diameter (in.)  
Fan Pulley Pitch Diameter (in.)  
Belt — Type...Length (in.)  
/
/
/
/
/
/
8
8
2
8
2
8
8
8
5
/
4.0  
4.5  
1...A...36  
4.5  
4.5  
1...A...36  
1...A...39  
4.0  
4.0  
1...A...36  
1...A...39  
4.0  
4.5  
1....4...40  
1...A...40  
Pulley Center Line Distance (in.)  
10.0---12.4  
60  
10.0-12.4  
10.0-12.4  
14.7-15.5  
Std  
Hi-Static  
Std  
Hi-Static  
Std  
Hi-Static  
Std  
Hi-Static  
Speed Change per Full Turn of  
65  
65  
5
70  
65  
5
75  
60  
6
Movable Pulley Flange (rpm)  
Movable Pulley Maximum Full  
Turns from Closed Position  
Factory Setting — Full Turns Open  
5
3
6
6
5
3
3
3
1
1
1
3 /  
3 /  
3 /  
2
2
2
Factory Speed Setting (rpm)  
756  
5
826  
936  
1248  
1233  
1233  
1396  
5
5
5
Fan Shaft Diameter at Pulley (in.)  
HIGH-PRESSURE SWITCH (psig)  
Standard Compressor Internal Relief  
Cutout  
/
/
/
/
8
8
8
8
450 ± 50  
428  
320  
Reset (Auto.)  
LOSS-OF-CHARGE/LOW-PRESSURE  
SWITCH (Liquid LIne) (psig)  
Cutout  
Reset (Auto.)  
FREEZE PROTECTION THERMOSTAT  
Opens (F)  
Closes (F)  
OUTDOOR-AIR INLET SCREENS  
RETURN-AIR FILTERS  
Quantity...Size (in.)  
7 ± 3  
22 ± 5  
30  
45  
Cleanable. Screen quantity and size varies with option selected.  
Throwaway  
2...16 x 25 x 2  
LEGEND  
***These units do NOT meet the California low NOx requirements.  
†††California SCAQMD compliant low NO models have combustion products that are  
x
Bhp — Brake Horsepower  
controlled to 40 nanograms per joule or less.  
*Single phase/three phase.  
10  
208/230-3-60  
460-3-60  
(SIZES 006 AND 007)  
208/230-1-60  
575-3-60  
(SIZES 004 AND 005)  
575-3-60  
(SIZES 006 AND 007)  
460-3-60  
(SIZES 004 AND 005)  
208/230-3-60  
(SIZES 004 AND 005)  
LEGEND  
— Contactor  
C
COMP — Compressor  
IFC  
NEC  
TB  
— Indoor (Evaporator) Fan Contactor  
— National Electrical Code  
— Terminal Block  
C06158  
Fig. 12 --- Power Wiring Connections  
LOW VOLTAGE  
CONNECTIONS  
INTEGRATED GAS UNIT  
CONTROLLER (IGC)  
C06125  
Fig. 13 --- Field Control Wiring Raceway  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
Step 6 —Adjust Factory-Installed Options  
Cobra™ Energy Recovery Units  
To install Thermidistat device:  
1. Route Thermidistat cable through hole provided in unit  
control box.  
Please refer to the supplement provided for information on  
installing and operating the factory optional COBRA Energy  
Recovery Units. These units are equipped with a factory--installed  
energy recovery unit and have different installation and operation  
procedures than the standard unit.  
2. Some models may be equipped with a raceway built into  
the corner post on the left side of control box (See Fig.  
13.) This raceway provides the required clearance between  
high--voltage and low voltage wiring. For models without  
a raceway, ensure to provide the NEC required clearance  
between high--voltage and low--voltage wiring.  
Humidi--Mizer™ Adaptive Dehumidification  
System  
3. A field-supplied relay must be installed between the  
thermidistat and the Humidi-Mizer circuit (recommended  
relay: HN612KK324). (See Fig. 17.) The relay coil is  
connected between the DEHUM output and C (common)  
of the unit. The relay controls the Humidi-MiZer solenoid  
valve and must be wired between the Humidi-MiZer fuse  
and the low-pressure switch. Refer to the installation  
instructions included with the Carrier Light Commercial  
Thermidistat device for more information.  
Humidi--MiZer system operation can be controlled by field  
installation of a Carrier--approved humidistat. (See Fig. 14.)  
NOTE: A light commercial Thermidistat™ device (Fig. 15) can  
be used instead of the humidistat if desired. The Thermidistat  
device includes a thermostat and a humidistat. The humidistat is  
normally used in applications where a temperature sensor is  
already provided (units with PremierLink™ control).  
Disconnect Switch  
The optional disconnect switch is non--fused. The switch has the  
capability of being locked in place for safety purposes.  
Manual Outdoor Damper  
The outdoor--air hood and screen are attached to the basepan at  
the bottom of the unit for shipping.  
Assembly:  
1. Determine quantity of ventilation required for building.  
Record amount for use in Step 8.  
2. Remove and save outdoor air opening panel and screws.  
(See Fig. 18.)  
% RELATIVE HUMIDITY  
3. Remove evaporator coil access panel. Separate hood and  
screen from basepan by removing the 4 screws securing  
them. Save all screws.  
C06126  
Fig. 14 --- Accessory Field--Installed Humidistat  
4. Replace evaporator coil access panel.  
5. Place hood on front of outdoor air opening panel. See  
Fig. 19 for hood details. Secure top of hood with the  
4 screws removed in Step 3. (See Fig. 20.)  
6. Remove and save 6 screws (3 on each side) from sides of  
the manual outdoor-air damper.  
7. Align screw holes on hood with screw holes on side of  
manual outdoor-air damper. (See Fig. 19 and 20.) Secure  
hood with 6 screws from Step 6.  
8. Adjust minimum position setting of the damper blade by  
adjusting the manual outdoor-air adjustment screws on the  
front of the damper blade. (See Fig. 18.) Slide blade  
vertically until it is in the appropriate position determined  
by Fig. 21. Tighten screws.  
C06127  
9. Remove and save screws currently on sides of hood.  
Insert screen. Secure screen to hood using the screws. (See  
Fig. 20.)  
Fig. 15 --- Light Commercial thermidistat Device  
To install the humidistat:  
Convenience Outlet  
1. Route humidistat cable through hole provided in unit  
control box.  
An optional convenience outlet provides power for rooftop use.  
For maintenance personnel safety, the convenience outlet power  
is off when the unit disconnect is off. Adjacent unit outlets may  
be used for service tools.  
2. Some models may be equipped with a raceway built into  
the corner post on the left side of control box (See Fig.  
13.) This raceway provides the required clearance between  
high--voltage and low voltage wiring. For models without  
a raceway, ensure to provide the NEC required clearance  
between high--voltage and low--voltage wiring.  
Novar Controls  
Optional Novar controls (ETM 3051) are available for  
replacement or new construction jobs.  
3. Use a wire nut to connect humidistat cable into low-  
voltage wiring as shown in Fig. 16.  
29  
LEGEND  
CB  
—
—
—
—
—
—
—
—
Circuit Breaker  
Terminal (Unmarked)  
Splice  
CR  
Cooling Relay  
DHR  
DSV  
HR  
LPS  
LSV  
LTLO  
Dehumidify Relay  
Discharge Solenoid Valve  
Heater Relay  
Low Pressure Switch  
Liquid Solenoid Valve  
Low Temperature Lockout  
Factory Wiring  
Field Control Wiring  
Field Power Wiring  
Field Splice  
C06128  
Fig. 16 --- Typical Humidi--MiZert Adaptive Dehumidification System  
Humidistat Wiring (208/230--V Unit Shown)  
LCT  
ROOF TOP UNIT  
R
C
R
C
Y1  
Y2  
G
Y1  
Y2  
G
W1  
W2  
W1  
W2  
DEHUM  
OC  
CB  
R1  
R1  
3.2 AMPS  
PINK  
PINK  
RED  
24V  
TSTATWIRES  
LEGEND  
LTLO  
PINK  
FROM  
HUMIDI-MIZER SYSTEM  
LLSV  
CB  
— Circuit Breaker  
LCT — Light Commercial Thermidistat™ Device  
LLSV — Liquid Line Solenoid Valve  
LTLO — Low Temperature Lockout  
HUMIDI-MIZER SYSTEM  
C06129  
Fig. 17 --- Typical Rooftop Unit with Humidi--Mizer  
Adaptive Dehumidification System with Thermidistat Device  
OUTDOOR  
AIR OPENING  
PANEL  
3 SCREWS  
(SIDE)  
C06130  
Fig. 18 --- Damper Panel with Manual Outdoor--Air  
Damper Installed  
C06013  
Fig. 19 --- Outdoor--Air Hood Details  
30  
Install the Supply Air Temperature (SAT) Sensor  
When the unit is supplied with a factory--mounted PremierLink  
control,  
the  
supply--air  
temperature  
(SAT)  
sensor  
(33ZCSENSAT) is factory--supplied and wired. The wiring is  
routed from the PremierLink control over the control box,  
through a grommet, into the fan section, down along the back  
side of the fan, and along the fan deck over to the supply--air  
opening.  
The SAT probe is wire--tied to the supply--air opening (on the  
horizontal opening end) in its shipping position. Remove the  
sensor for installation. Re--position the sensor in the flange of the  
supply--air opening or in the supply air duct (as required by local  
codes). Drill or punch a 1/2--in. hole in the flange or duct. Use  
two field--supplied, self--drilling screws to secure the sensor probe  
in a horizontal orientation.  
C06131  
Fig. 20 --- Outdoor--Air Damper With  
NOTE: The sensor must be mounted in the discharge airstream  
downstream of the cooling coil and any heating devices. Be sure  
the probe tip does not come in contact with any of the unit or heat  
surfaces.  
Hood Attached  
Outdoor Air Temperature Sensor (OAT)  
When the unit is supplied with a factory-mounted PremierLink  
control, the outdoor-air temperature sensor (OAT) is  
factory-supplied and wired.  
Install the Indoor Air Quality (CO ) Sensor  
2
Mount the optional indoor air quality (CO ) sensor according to  
2
manufacturer specifications.  
A separate field-supplied transformer must be used to power the  
CO sensor.  
2
Wire the CO sensor to the COM and IAQI terminals of J5 on the  
2
PremierLink controller. Refer to the PremierLink Installation,  
Start-up, and Configuration Instructions for detailed wiring and  
configuration information.  
Enthalpy Sensors and Control  
The enthalpy control (HH57AC077) is supplied as  
a
field-installed accessory to be used with the EconoMi$er2  
damper control option. The outdoor air enthalpy sensor is part of  
the enthalpy control. The separate field-installed accessory return  
air enthalpy sensor (HH57AC078) is required for differential  
enthalpy control.  
C06132  
Fig. 21 --- Outdoor--Air Damper Position Setting  
NOTE: The enthalpy control must be set to the “D” setting for  
differential enthalpy control to work properly.  
Premierlink™ Control  
The PremierLink controller is compatible with Carrier Comfort  
NetworkR (CCN) devices. This control is designed to allow  
users the access and ability to change factory--defined settings,  
thus expanding the function of the standard unit control board.  
Carrier’s diagnostic standard tier display tools such as  
Navigatort or Scrolling Marquee can be used with the  
PremierLink controller.  
The enthalpy control receives the indoor and return  
enthalpy from the outdoor and return air enthalpy sensors and  
provides a dry contact switch input to the PremierLink controller.  
Locate the controller in place of an existing economizer controller  
or near the actuator. The mounting plate may not be needed if  
existing bracket is used.  
A closed contact indicates that outside air is preferred to the  
return air. An open contact indicates that the economizer should  
remain at minimum position.  
The PremierLink controller (see Fig. 22 and 23) requires the use  
of a Carrier electronic thermostat or a CCN connection for time  
broadcast to initiate its internal timeclock. This is necessary for  
broadcast of time of day functions (occupied/unoccupied). No  
sensors are supplied with the field--mounted PremierLink control.  
The factory--installed PremierLink control includes only the  
supply--air temperature (SAT) sensor and the outdoor air  
temperature (OAT) sensor as standard. An indoor air quality  
(CO2) sensor can be added as an option. Refer to Table 5 for  
sensor usage. Refer to Fig. 24 for PremierLink controller wiring.  
The PremierLink control may be mounted in the control panel or  
an area below the control panel.  
Outdoor Air Enthalphy Sensor/Enthalpy Controller  
(HH57AC077)  
To wire the outdoor air enthalpy sensor, perform the following (See  
Fig. 25 and 26):  
NOTE: The outdoor air sensor can be removed from the back of  
the enthalpy controller and mounted remotely.  
NOTE: PremierLink controller versions 1.3 and later are shipped  
in Sensor mode. If used with a thermostat, the PremierLink  
controller must be configured to Thermostat mode.  
31  
Table 5—PremierLink™ Sensor Usage  
OUTDOOR AIR  
TEMPERATURE SENSOR  
RETURN AIR  
TEMPERATURE SENSOR  
OUTDOOR AIR  
ENTHALPY SENSOR  
RETURN AIR  
ENTHALPY SENSOR  
APPLICATION  
Dry Bulb  
Temperature with  
PremierLink*  
(PremierLink  
requires 4-20 mA  
Actuator)  
In c lu d e d ---  
—
—
—
—
CRTEMPSN001A00  
Differential Dry Bulb  
Temperature with  
PremierLink*  
R e q u ir e d ---  
33ZCT55SPT  
or Equivalent  
In c lu d e d ---  
CRTEMPSN001A00  
—
—
(PremierLink  
requires 4-20 mA  
Actuator)  
Single Enthalpy with  
PremierLink*  
R e q u ir e d ---  
HH57AC077  
or Equivalent  
In c lu d e d ---  
Not Used  
(PremierLink  
—
—
requires 4-20 mA  
Actuator)  
Differential Enthalpy  
with PremierLink*  
(PremierLink  
requires 4-20 mA  
Actuator)  
R e q u ir e d ---  
HH57AC077  
or Equivalent  
R e q u i r e d ---  
HH57AC078  
or Equivalent  
In c lu d e d ---  
Not Used  
*PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT and Outdoor Air Temperature sensor CRTEMPSN001A00  
— Included with factory-installed PremierLink control; field-supplied and field-installed with field-installed PremierLink control.  
NOTES:  
1. CO Sensors (Optional):  
2
33ZCSENCO2 — Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor.  
33ZCASPCO2 — Aspirator box used for duct-mounted CO room sensor.  
2
33ZCT55CO2 — Space temperature and CO room sensor with override.  
2
33ZCT56CO2 — Space temperature and CO room sensor with override and set point.  
2
2. All units include the following Standard Sensors:  
Outdoor-Air Sensor — 50HJ540569 — Opens at 67_F, closes at 52_F, not adjustable.  
Mixed-Air Sensor — HH97AZ001 — (PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT  
and Outdoor Air Temperature Sensor CRTEMPSN001A00)  
Compressor Lockout Sensor — 50HJ540570 — Opens at 35_F, cl oses at 50_F.  
C06016  
Fig. 22 --- PremierLink Controller  
32  
PREMIERLINK  
CONTROL  
HINGED  
DOOR  
PANEL  
C06017  
Fig. 23 --- PremierLinktController (Installed)  
BLK  
VIO  
RED  
HK50AA039  
TB - 2  
SAT  
BLU  
PNK  
PNK  
VIO  
BRN  
7
6
7
6
BLK  
BLU  
1
BRN  
ORN  
PNK  
VIO  
PremierLink  
2
3
BRN  
BLK  
OAT  
BRN  
BRN  
RED  
BLU  
11  
10  
8
Space Temp./ Set  
Point Adjustment  
11  
10  
8
BRN  
RED  
4
5
6
YEL  
BLU  
GRN  
YEL  
BLU  
2
Indoor Air  
Quality Sensor  
2
BRN  
BLU  
ORN  
WHT  
3
4
1
3
4
1
7
8
PNK  
GRA  
GRA  
BLK  
Outdoor Air  
Quality Sensor  
J7  
PP/MP  
J9  
0-20 mA  
J8  
Relays  
J2  
COMMS  
J1  
PWR  
RED  
BLU  
Power Exhaust/Energy Recycler  
GRA  
ORN  
PNK  
5
5
TB - 3  
PNK  
PNK  
WHT GRA  
ORN ORN  
BRN  
YEL  
ORN  
RED  
9
RMTOCC  
9
GRN  
YEL  
1
2
3
GRA  
BLK  
TB - 1  
RED  
WHT  
12  
12  
CMPSAFE  
FSD  
1
R
RED  
GRA  
BLU  
2
3
Y1  
TR1  
TR  
WHT  
SFS  
4
5
6
Y2  
ORN  
+
3
SR  
2
PNK  
RED  
4
5
6
W1  
ORN  
PNK  
GRAY  
GRAY  
W2  
G
OUTDOOR AIR  
ENTHALPY SENSOR  
CCN  
7
8
WHT  
BLK  
WHT  
Comm.  
BLK  
7
8
C
Economi$er2  
4 - 20mA  
RED  
BRN  
X
+
S
LEGEND  
COMMS — Communications  
RTU Terminal  
Board  
RETURN AIR  
ENTHALPY  
SENSOR  
OAT  
PWR  
RTU  
SAT  
TB  
—
—
—
—
—
Outdoor Air Temperature Sensor  
Power  
RED  
BRN  
Rooftop Unit  
Supply Air Temperature Sensor  
Terminal Block  
C06018  
Fig. 24 --- Typical PremierLink Control Wiring  
33  
1. Use a 4-conductor, 18 or 20 AWG cable to connect the  
enthalpy control to the PremierLink™ controller and  
power transformer.  
HH57AC077  
ENTHALPY  
CONTROL AND  
OUTDOOR AIR  
ENTHALPY SENSOR  
BRACKET  
2. Connect the following 4 wires from the wire harness  
located in rooftop unit to the enthalpy controller:  
a. Connect the BRN wire to the 24 vac terminal (TR1) on  
enthalpy control and to pin 1 on 12-pin harness.  
b. Connect the RED wire to the 24 vac GND terminal (TR)  
on enthalpy sensor and to pin 4 on 12-pin harness.  
HH57AC078 ENTHALPY  
SENSOR (USED WITH  
ENTHALPY CONTROL  
FOR DIFFERENTIAL  
c. Connect the GRAY/ORN wire to J4-2 on PremierLink  
controller and to terminal (3) on enthalpy sensor.  
C7400A1004  
ENTHALPY OPERATION)  
+
d. Connect the GRAY/RED wire to J4-1 on PremierLink  
controller and to terminal (2) on enthalpy sensor.  
NOTE: If installing in a Carrier rooftop, use the two gray wires  
provided from the control section to the economizer to connect  
PremierLink controller to terminals 2 and 3 on enthalpy sensor.  
MOUNTING PLATE  
Return Air Enthalphy Sensor  
Mount the return-air enthalpy sensor (HH57AC078) in the  
return-air duct. The return air sensor is wired to the enthalpy  
controller (HH57AC077). The outdoor enthalpy changeover set  
point is set at the controller.  
ENTHALPY CONTROLLER  
(OUTDOOR  
AIR  
ENTHALPY  
SENSOR)  
S
+
RED  
BRN  
C06020  
B
Fig. 26 --- Differential Enthalpy Control,  
Sensor and Mounting Plate (33AMKITENT006)  
TR  
SO  
TR1  
BLK  
RED  
C
D
A
+
S
+
(RETURN AIR  
ENTHALPY  
SENSOR)  
+
3
1
SR  
2
ECONOMI$ER IV  
CONTROLLER  
GRAY/ORN  
GRAY/RED  
OUTSIDE AIR  
WIRING  
WIRE HARNESS  
IN UNIT  
TEMPERATURE SENSOR  
HARNESS  
LED  
LOW AMBIENT  
SENSOR  
ACTUATOR  
NOTES:  
1. Remove factory-installed jumper across SR and + before connecting  
wires from return air sensor.  
2. Switches shown in high outdoor air enthalpy state. Terminals 2 and 3  
close on low outdoor air enthalpy relative to indoor air enthalpy.  
3. Remove sensor mounted on back of control and locate in outside air-  
stream.  
C06019  
Fig. 25 --- Outdoor and Return Air Sensor Wiring  
Connections for Differential Enthalpy Control  
C06021  
Fig. 27 --- EconoMi$er IV Component Locations  
To wire the return air enthalpy sensor, perform the following (See  
Fig. 25):  
OUTDOOR  
AIR HOOD  
1. Use a 2--conductor, 18 or 20 AWG, twisted pair cable to  
connect the return air enthalpy sensor to the enthalpy  
controller.  
2. At the enthalpy control remove the factory-installed  
resistor from the (SR) and (+) terminals.  
3. Connect the field-supplied RED wire to (+) spade  
connector on the return air enthalpy sensor and the (SR+)  
terminal on the enthalpy controller. Connect the BLK wire  
to (S) spade connector on the return air enthalpy sensor  
and the (SR) terminal on the enthalpy controller.  
ECONOMI$ER2  
HOOD  
PLUG  
SHIPPING  
BRACKET  
GEAR DRIVEN  
DAMPER  
BAROMETRIC  
RELIEF  
DAMPER  
C06022  
Fig. 28 --- EconoMi$er2 Component Locations  
Optional Economi$er IV and Economi$er2  
See Fig. 27 for EconoMi$er IV component locations. See Fig. 28 for  
EconoMi$er2 component locations.  
34  
NOTE: These instructions are for installing the optional  
EconoMi$er IV and EconoMi$er2 only. Refer to the accessory  
EconoMi$er IV or EconoMi$er2 installation instructions when  
field installing an EconoMi$er IV or EconoMi$er2 accessory.  
1. To remove the existing unit filter access panel, raise the  
panel and swing the bottom outward. The panel is now  
disengaged from the track and can be removed. (See  
Fig. 29.)  
HOOD BOX  
BRACKET  
2. The box with the economizer hood components is shipped  
in the compartment behind the economizer. The  
EconoMi$er IV controller is mounted on top of the  
EconoMi$er IV in the position shown in Fig. 24. The  
optional EconoMi$er2 with 4 to 20 mA actuator signal  
control does not include the EconoMi$er IV controller. To  
remove the component box from its shipping position,  
remove the screw holding the hood box bracket to the top  
of the economizer. Slide the hood box out of the unit. (See  
Fig. 30.)  
C06024  
Fig. 30 --- Hood Box Removal  
IMPORTANT: If the power exhaust accessory is to be installed  
on the unit, the hood shipped with the unit will not be used and  
must be discarded. Save the aluminum filter for use in the power  
exhaust hood assembly.  
3. The indoor coil access panel will be used as the top of the  
hood. Remove the screws along the sides and bottom of  
the indoor coil access panel. (See Fig. 31.)  
SIDE  
PANEL  
4. Swing out indoor coil access panel and insert the hood  
sides under the panel (hood top). Use the screws provided  
to attach the hood sides to the hood top. Use screws  
provided to attach the hood sides to the unit. (See Fig. 32.)  
5. Remove the shipping tape holding the economizer  
barometric relief damper in place.  
6. Insert the hood divider between the hood sides. (See  
Fig. 32 and 33.) Secure hood divider with 2 screws on  
each hood side. The hood divider is also used as the  
bottom filter rack for the aluminum filter.  
TOP  
SIDE  
PANEL  
CAULK  
HERE  
INDOOR  
COIL  
ACCESS  
PANEL  
INDOOR  
COIL  
ACCESS  
PANEL  
7. Open the filter clips which are located underneath the  
hood top. Insert the aluminum filter into the bottom filter  
rack (hood divider). Push the filter into position past the  
open filter clips. Close the filter clips to lock the filter into  
place. (See Fig. 33.)  
C06025  
Fig. 31 --- Indoor Coil Access Panel Relocation  
8. Caulk the ends of the joint between the unit top panel and  
the hood top. (See Fig. 31.)  
TOP  
PANEL  
9. Replace the filter access panel.  
INDOOR COIL  
ACCESS PANEL  
10. Install all EconoMi$er IV accessories. EconoMi$er IV  
wiring is shown in Fig. 34. EconoMi$er2 wiring is shown  
in Fig. 35.  
Barometric flow capacity is shown in Fig. 36. Outdoor air  
leakage is shown in Fig. 37. Return air pressure drop is shown in  
Fig. 38.  
LEFT  
HOOD  
SIDE  
SCREW  
B
19 1/16”  
FILTER ACCESS PANEL  
33 3/8”  
HOOD DIVIDER  
C06026  
Fig. 32 --- Outdoor--Air Hood Construction  
Economi$er IV Standard Sensors  
Outdoor Air Temperature (OAT) Sensor  
COMPRESSOR  
ACCESS PANEL  
The outdoor air temperature sensor (HH57AC074) is a 10 to 20 mA  
device used to measure the outdoor-air temperature. The outdoor-air  
temperature is used to determine when the EconoMi$er IV can be  
used for free cooling. The sensor is factory-installed on the  
EconoMi$er IV in the outdoor airstream. (See Fig. 27.) The  
operating range of temperature measurement is 40_ to 100_F.  
OUTDOOR-AIR OPENING AND  
INDOOR COIL ACCESS PANEL  
C06023  
Fig. 29 --- Typical Access Panel Locations  
35  
Supply Air Temperature (SAT) Sensor  
Economi$er IV Control Modes  
The supply air temperature sensor is a 3 K thermistor located at  
the inlet of the indoor fan. (See Fig. 39.) This sensor is factory  
installed. The operating range of temperature measurement is 0°  
to 158_F. See Table 6 for sensor temperature/resistance values.  
IMPORTANT: The optional EconoMi$er2 does not include a  
controller. The EconoMi$er2 is operated by a 4 to 20 mA signal  
from an existing field-supplied controller (such as PremierLink™  
control). See Fig. 35 for wiring information.  
Determine the EconoMi$er IV control mode before set up of the  
control. Some modes of operation may require different  
sensors. Refer to Table 7. The EconoMi$er IV is supplied from  
the factory with a supply--air temperature sensor and an outdoor--  
air temperature sensor. This allows for operation of the  
EconoMi$er IV with outdoor air dry bulb changeover control.  
Additional accessories can be added to allow for different types of  
changeover control and operation of the EconoMi$er IV and unit.  
Table 6—Supply Air Sensor Temperature/  
Resistance Values  
TEMPERATURE (F)  
RESISTANCE (ohms)  
–58  
–40  
–22  
–4  
200,250  
100,680  
53,010  
29,091  
16,590  
9,795  
5,970  
3,747  
3,000  
2,416  
1,597  
1,080  
746  
525  
376  
321  
274  
203  
153  
116  
102  
14  
Table 7—Economi$er IV Sensor Usage  
32  
50  
ECONOMI$ER IV WITH OUTDOOR AIR  
68  
DRY BULB SENSOR  
Accessories Required  
APPLICATION  
77  
86  
None. The outdoor air dry bulb sensor  
Outdoor Air  
Dry Bulb  
104  
122  
140  
158  
176  
185  
194  
212  
230  
248  
257  
266  
284  
302  
is factory installed.  
Differential  
Dry Bulb  
CRTEMPSN002A00*  
Single Enthalpy  
HH57AC078  
HH57AC078  
Differential  
Enthalpy  
and  
CRENTDIF004A00*  
CO for DCV  
2
Control using a  
Wall-Mounted  
33ZCSENCO2  
CO Sensor  
2
CO for DCV  
2
33ZCSENCO2†  
O
Control using a  
Duct-Mounted  
89  
70  
55  
and  
CRCBDIOX005A00††  
R
33ZCASPCO2**  
CO Sensor  
2
*CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on many  
different base units. As such, these kits may contain parts that will not be  
needed for installation.  
17 1/4”  
† 33ZCSENCO2 is an accessory CO sensor.  
2
** 33ZCASPCO2 is an accessory aspirator box required for duct-mounted  
applications.  
†† CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2  
and 33ZCASPCO2 accessories.  
Outdoor Dry Bulb Changeover  
The standard controller is shipped from the factory configured for  
outdoor dry bulb changeover control. The outdoor--air and  
supply--air temperature sensors are included as standard. For this  
control mode, the outdoor temperature is compared to an  
adjustable set point selected on the control. If the outdoor-air  
temperature is above the set point, the EconoMi$er IV will adjust  
the outdoor-air dampers to minimum position. If the outdoor air  
temperature is below the set point, the position of the outdoor air  
dampers will be controlled to provide free cooling using outdoor  
air. When in this mode, the LED next to the free cooling set point  
potentiometer will be on. The changeover temperature set point is  
controlled by the free cooling set point potentiometer located on  
the control. (See Fig. 40.) The scale on the potentiometer is A, B,  
C, and D. See Fig. 41 for the corresponding temperature  
changeover values.  
DIVIDER  
OUTSIDE  
AIR  
HOOD  
CLEANABLE  
ALUMINUM  
FILTER  
FILTER  
BAROMETRIC  
RELIEF  
FILTER  
CLIP  
C06027  
Fig. 33 --- Filter Installation  
Differential Dry Bulb Control  
The temperature sensor looks like an eyelet terminal with wires  
running to it. The sensor is located in the “crimp end” and is  
sealed from moisture.  
For differential dry bulb control the standard outdoor dry bulb  
sensor is used in conjunction with an additional accessory dry  
bulb sensor (part number CRTEMPSN002A00). The accessory  
sensor must be mounted in the return airstream. (See Fig. 42.)  
Wiring is provided in the EconoMi$er IV wiring harness. (See  
Fig. 33.)  
In this mode of operation, the outdoor-air temperature is  
compared to the return-air temperature and the lower temperature  
airstream is used for cooling. When using this mode of  
changeover control, turn the enthalpy setpoint potentiometer fully  
clockwise to the D setting. (See Fig. 40.)  
Outdoor Air Lockout Sensor  
The Economi$er IV is equipped with an ambient temperature  
lockout switch located in the outdoor air stream which is used to  
lockout the compressors below a 42_F ambient temperature. (See  
Fig. 27.)  
36  
FOR OCCUPANCY CONTROL  
REPLACE JUMPER WITH  
FIELD-SUPPLIED TIME CLOCK  
Potentiometer Defaults Settings:  
LEGEND  
NOTES:  
Power Exhaust Middle  
1. 620 ohm, 1 watt 5% resistor should be removed only when using differential  
DCV— Demand Controlled Ventilation  
IAQ — Indoor Air Quality  
Minimum Pos.  
DCV Max.  
DCV Set  
Fully Closed  
enthalpy or dry bulb.  
Middle  
2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power  
supply, it cannot have the secondary of the transformer grounded.  
3. For field-installed remote minimum position POT, remove black wire jumper  
between P and P1 and set control minimum position POT to the minimum  
position.  
LA — Low Ambient Lockout Device  
OAT — Outdoor-Air Temperature  
POT— Potentiometer  
Middle  
C Setting  
Enthalpy  
RAT — Return-Air Temperature  
C06028  
Fig. 34 --- EconoMi$er IV Wiring  
BLACK  
BLUE  
4
3
5
2
500 OHM  
RESISTOR  
8
VIOLET  
PINK  
6
NOTE 1  
7
RUN  
RED  
1
-
NOTE 3  
+
10  
11  
9
50HJ540573  
ACTUATOR  
ASSEMBLY  
OPTIONAL CO  
2
SENSOR 4 - 20 mA  
OUTPUT  
WHITE  
DIRECT DRIVE  
ACTUATOR  
12  
ECONOMISER2 PLUG  
NOTES:  
1. Switch on actuator must be in run position for economizer to operate.  
2. PremierLink™ control requires that the standard 50HJ540569 outside-air sensor be replaced by either the CROASENR001A00 dry bulb sensor or HH57A077  
enthalpy sensor.  
3. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.  
C06029  
Fig. 35 --- EconoMi$er2 with 4 to 20 mA Control Wiring  
Outdoor Enthalpy Changeover  
enthalpy changeover set point is set with the outdoor enthalpy set  
point potentiometer on the EconoMi$er IV controller. The set  
points are A, B, C, and D. (See Fig. 43.) The factory-installed  
620-ohm jumper must be in place across terminals SR and SR+  
on the EconoMi$er IV controller. (See Fig. 27 and 44.)  
For enthalpy control, accessory enthalpy sensor (part number  
HH57AC078) is required. Replace the standard outdoor dry bulb  
temperature sensor with the accessory enthalpy sensor in the same  
mounting location. (See Fig. 27.) When the outdoor air enthalpy  
rises above the outdoor enthalpy changeover set point, the  
outdoor-air damper moves to its minimum position. The outdoor  
37  
Differential Enthalphy Control  
For differential enthalpy control, the EconoMi$er IV controller  
uses  
two  
enthalpy  
sensors  
(HH57AC078  
and  
CRENTDIF004A00), one in the outside air and one in the return  
air duct. The EconoMi$er IV controller compares the outdoor  
air enthalpy to the return air enthalpy to determine EconoMi$er  
IV use. The controller selects the lower enthalpy air (return or  
outdoor) for cooling. For example, when the outdoor air has a  
lower enthalpy than the return air, the EconoMi$er IV opens to  
bring in outdoor air for free cooling.  
SUPPLY AIR  
TEMPERATURE  
SENSOR  
MOUNTING  
LOCATION  
SUPPLY AIR  
TEMPERATURE  
SENSOR  
2500  
2000  
1500  
1000  
500  
C06033  
Fig. 39 --- Supply Air Sensor Location  
0
0.15  
0.05  
0.25  
STATIC PRESSURE (in. wg)  
C06030  
Fig. 36 --- Barometric Flow Capacity  
30  
25  
20  
15  
10  
5
C06034  
Fig. 40 --- EconoMi$er IV Controller Potentiometer  
and LED Locations  
0
0.13 0.20 0.22 0.25 0.30 0.35 0.40 0.45 0.50  
STATIC PRESSURE (in. wg)  
Replace the standard outside air dry bulb temperature sensor with  
the accessory enthalpy sensor in the same mounting location.  
(See Fig. 27.) Mount the return air enthalpy sensor in the return  
air duct. (See Fig. 42.) Wiring is provided in the EconoMi$er IV  
wiring harness. (See Fig. 34.) The outdoor enthalpy changeover  
set point is set with the outdoor enthalpy set point potentiometer  
on the EconoMi$er IV controller. When using this mode of  
changeover control, turn the enthalpy setpoint potentiometer fully  
clockwise to the D setting.  
C06031  
Fig. 37 --- Outdoor--Air Damper Leakage  
6000  
5000  
4000  
3000  
2000  
1000  
0
Indoor Air Quality (IAQ) Sensor Input  
The IAQ input can be used for demand control ventilation control  
based on the level of CO measured in the space or return air  
2
duct.  
Mount the accessory IAQ sensor according to manufacturer  
specifications. The IAQ sensor should be wired to the AQ and  
AQ1 terminals of the controller. Adjust the DCV potentiometers  
to correspond to the DCV voltage output of the indoor air quality  
sensor at the user-determined set point. (See Fig. 45.)  
0.05  
0.10  
0.15  
0.20  
0.25  
0.30  
0.35  
STATIC PRESSURE (in. wg)  
C06032  
If a separate field-supplied transformer is used to power the IAQ  
sensor, the sensor must not be grounded or the EconoMi$er IV  
control board will be damaged.  
Fig. 38 --- Return--Air Pressure Drop  
Exhaust Set Point Adjustment  
The exhaust set point will determine when the exhaust fan runs  
based on damper position (if accessory power exhaust is  
installed). The set point is modified with the Exhaust Fan Set  
Point (EXH SET) potentiometer. (See Fig. 40.) The set point  
represents the damper position above which the exhaust fans will  
be turned on. When there is a call for exhaust, the EconoMi$er IV  
controller provides a 45 ± 15 second delay before exhaust fan  
38  
activation to allow the dampers to open. This delay allows the  
damper to reach the appropriate position to avoid unnecessary fan  
overload.  
Thermostats  
The EconoMi$er IV control works with conventional thermostats  
that have a Y1 (cool stage 1), Y2 (cool stage 2), W1 (heat stage  
1), W2 (heat stage 2), and G (fan). The EconoMi$er IV control  
does not support space temperature sensors. Connections are  
made at the thermostat terminal connection board located in the  
main control box.  
Minimum Position Control  
There is a minimum damper position potentiometer on the  
EconoMi$er IV controller. (See Fig. 40.) The minimum damper  
position maintains the minimum airflow into the building during  
the occupied period.  
19  
LED ON  
18  
When using demand ventilation, the minimum damper position  
represents the minimum ventilation position for VOC (volatile  
organic compound) ventilation requirements. The maximum  
demand ventilation position is used for fully occupied ventilation.  
When demand ventilation control is not being used, the minimum  
position potentiometer should be used to set the occupied  
ventilation position. The maximum demand ventilation position  
should be turned fully clockwise.  
Adjust the minimum position potentiometer to allow the  
minimum amount of outdoor air, as required by local codes, to  
enter the building. Make minimum position adjustments with at  
least 10_F temperature difference between the outdoor and  
return-air temperatures.  
D
17  
LED ON  
LED OFF  
16  
15  
14  
C
LED ON  
LED OFF  
B
13  
12  
LED ON  
LED OFF  
A
11  
10  
9
LED OFF  
85 90  
95  
100  
50  
55 60  
70 75  
40 45  
65  
80  
DEGREES FAHRENHEIT  
C06035  
To determine the minimum position setting, perform the  
following procedure:  
Fig. 41 --- Outside Air Temperature  
Changeover Set Points  
1. Calculate the appropriate mixed air temperature using the  
following formula:  
ECONOMI$ER IV  
CONTROLLER  
OA  
100  
RA  
100  
+ (TR x  
(TO x  
)
) =TM  
ECONOMI$ER IV  
T
O
= Outdoor-Air Temperature  
OA = Percent of Outdoor Air  
T = Return-Air Temperature  
RA = Percent of Return Air  
R
GROMMET  
T
M
= Mixed-Air Temperature  
As an example, if local codes require 10% outdoor air during  
occupied conditions, outdoor-air temperature is 60_F, and  
return-air temperature is 75_F.  
RETURN AIR  
SENSOR  
(60 x .10) + (75 x .90) = 73.5_F  
2. Disconnect the supply air sensor from terminals T and T1.  
RETURN DUCT  
(FIELD-PROVIDED)  
3. Ensure that the factory-installed jumper is in place across  
terminals P and P1. If remote damper positioning is being  
used, make sure that the terminals are wired according to  
Fig. 34 and that the minimum position potentiometer is  
turned fully clockwise.  
C06036  
Fig. 42 --- Return Air Temperature or Enthalpy  
Sensor Mounting Location  
Occupancy Control  
4. Connect 24 vac across terminals TR and TR1.  
The factory default configuration for the EconoMi$er IV control  
is occupied mode. Occupied mode is provided by the black  
jumper from terminal TR to terminal N. When unoccupied mode  
is desired, install a field-supplied timeclock function in place of  
the jumper between TR and N. (See Fig. 34.) When the timeclock  
contacts are closed, the EconoMi$er IV control will be in  
occupied mode. When the timeclock contacts are open (removing  
the 24-v signal from terminal N), the EconoMi$er IV will be in  
unoccupied mode.  
5. Carefully adjust the minimum position potentiometer  
until the measured supply air temperature matches the  
calculated value.  
6. Reconnect the mixed air sensor to terminals T and T1.  
Remote control of the EconoMi$er IV damper is desirable when  
requiring  
additional  
temporary  
ventilation.  
If  
a
field-supplied remote potentiometer (Honeywell part number  
S963B1128) is wired to the EconoMi$er IV controller, the  
minimum position of the damper can be controlled from a remote  
location.  
To control the minimum damper position remotely, remove the  
factory-installed jumper on the P and P1 terminals on the  
EconoMi$er IV controller. Wire the field-supplied potentiometer  
to the P and P1 terminals on the EconoMi$er IV controller. (See  
Fig. 44.)  
Damper Movement  
Damper movement from full open to full closed (or vice versa)  
1
takes 2 / minutes.  
2
39  
85  
90  
95 100 105 110  
(29) (32) (35) (38) (41) (43)  
46  
4
CONTROL CONTROL POINT  
4
CURVE  
APPROX. deg. F (deg. C)  
AT 50% RH  
80  
(27)  
42  
A
B
C
D
73 (23)  
70 (21)  
67 (19)  
63 (17)  
40  
8
3
6
75  
3
(24)  
4
3
32  
70  
(21)  
30  
RELATIVE HUMIDITY (%)  
28  
ENTHALPY BTU PER POUND DRY AIR  
0
0
0
1
26  
9
65  
80  
(18)  
4
70  
2
0
6
2
2
60  
50  
(16)  
0
2
0
4
A
8
55  
1
(13)  
B
30  
6
1
50  
(10)  
C
4
1
20  
2
45  
(7)  
D
1
40  
(4)  
0
1
35  
(2)  
A
B
C
D
HIGH LIMIT  
CURVE  
35  
(2)  
40  
45  
50  
55  
60  
65  
70  
75  
80  
85  
90  
95 100 105 110  
(4) (7) (10) (13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43)  
APPROXIMATE DRY BULB TEMPERATURE--degrees F (degrees C)  
C06037  
Fig. 43 --- Enthalpy Changeover Set Points  
Demand Controlled Ventilation (DCV)  
OA  
100  
RA  
100  
+ (TR x  
(TO x  
)
) =TM  
When using the EconoMi$er IV for demand controlled  
ventilation, there are some equipment selection criteria which  
should be considered. When selecting the heat capacity and cool  
capacity of the equipment, the maximum ventilation rate must be  
evaluated for design conditions. The maximum damper position  
must be calculated to provide the desired fresh air.  
Typically the maximum ventilation rate will be about 5 to 10%  
more than the typical cfm required per person, using normal  
outside air design criteria.  
T
O
= Outdoor-Air Temperature  
OA = Percent of Outdoor Air  
T = Return-Air Temperature  
RA = Percent of Return Air  
R
T
M
= Mixed-Air Temperature  
Once base ventilation has been determined, set the minimum  
damper position potentiometer to the correct position.  
A proportional anticipatory strategy should be taken with the  
following conditions: a zone with a large area, varied occupancy,  
and equipment that cannot exceed the required ventilation rate at  
design conditions. Exceeding the required ventilation rate means  
the equipment can condition air at a maximum ventilation rate  
that is greater than the required ventilation rate for maximum  
occupancy. A proportional-anticipatory strategy will cause the  
The same equation can be used to determine the occupied or  
maximum ventilation rate to the building. For example, an output  
of 3.6 volts to the actuator provides a base ventilation rate of 5%  
and an output of 6.7 volts provides the maximum ventilation rate  
of 20% (or base plus 15 cfm per person). Use Fig. 42 to  
determine the maximum setting of the CO sensor. For example,  
a 1100 ppm set point relates to a 15 cfm per person design. Use  
the 1100 ppm curve on Fig. 45 to find the point when the CO  
sensor output will be 6.7 volts. Line up the point on the graph  
with the left side of the chart to determine that the range  
configuration for the CO sensor should be 1800 ppm. The  
EconoMi$er IV controller will output the 6.7 volts from the CO  
sensor to the actuator when the CO concentration in the space is  
at 1100 ppm. The DCV set point may be left at 2 volts since the  
CO sensor voltage will be ignored by the EconoMi$er IV  
controller until it rises above the 3.6 volt setting of the minimum  
position potentiometer.  
2
fresh air supplied to increase as the room CO level increases  
2
2
even though the CO set point has not been reached. By the time  
2
the CO level reaches the set point, the damper will be at  
2
maximum ventilation and should maintain the set point.  
2
In order to have the CO sensor control the economizer damper in  
2
2
this manner, first determine the damper voltage output for  
minimum or base ventilation. Base ventilation is the ventilation  
required to remove contaminants during unoccupied periods. The  
following equation may be used to determine the percent of  
outside-air entering the building for a given damper position. For  
best results there should be at least a 10 degree difference in  
outside and return-air temperatures.  
2
2
Once the fully occupied damper position has been determined, set  
the maximum damper demand control ventilation potentiometer  
to this position. Do not set to the maximum position as this can  
result in over-ventilation to the space and potential high-humidity  
levels.  
40  
Dehumidification of Fresh Air with DCV Control  
TR1  
EXH  
Set  
10V  
TR  
N1  
Information from ASHRAE indicates that the largest humidity  
load on any zone is the fresh air introduced. For some  
applications, a device such as a 62AQ energy recovery unit is  
added to reduce the moisture content of the fresh air being  
brought into the building when the enthalpy is high. In most  
cases, the normal heating and cooling processes are more than  
adequate to remove the humidity loads for most commercial  
applications.  
N
2V  
EXH  
24  
Vac  
HOT  
24 Vac  
COM  
P1  
T1  
P
T
Min  
Pos  
_
+
Open  
DCV  
Max  
10V  
1
2
5
2V  
If normal rooftop heating and cooling operation is not adequate  
for the outdoor humidity level, an energy recovery unit and/or a  
dehumidification option should be considered.  
AQ1  
AQ  
SO+  
SO  
SR+  
SR  
DCV  
DCV  
Set  
10V  
4
3
Step 7 —Adjust Evaporator--Fan Speed  
2V  
Free  
Cool  
Adjust evaporator-fan speed to meet jobsite conditions.  
EF1  
EF  
C
D
B
Tables 9 and 10 show fan rpm at motor pulley settings for the  
50HE003--006 and 50HJ004--007 units. Tables 11 and 14 show  
maximum amp draw of belt-drive motor. Table 13 shows sound  
data. Refer to Tables 15-34 for performance data. See Table 35  
for accessory static pressure drop. See Fig. 47 for the  
Humidi-MiZer™ system static pressure drops.  
A
C06038  
Fig. 44 --- EconoMi$er IV Control  
For units with electric heating, required minimum cfm is 900 for  
50HJ004; 1200 for 50HJ005; 1500 for 50HJ006 and 1800 for  
50HJ007.  
CO SENSOR MAX RANGE SETTING  
2
6000  
5000  
4000  
3000  
2000  
1000  
0
Belt Drive Motors  
Fan motor pulleys are factory set for speed shown in Table 1.  
Check pulley alignment and belt tension prior to start-up.  
800 ppm  
900 ppm  
1000 ppm  
1100 ppm  
To change fan speed:  
1. Shut off the unit power supply and tag disconnect.  
2. Loosen the belt by loosening the fan motor mounting nuts.  
(See Fig. 47.)  
3. Loosen movable pulley flange setscrew (See Fig. 48).  
2
3
4
5
6
7
8
4. Screw movable flange toward fixed flange to increase  
speed and away from fixed flange to decrease speed.  
Increasing fan speed increases load on motor. Do not  
exceed maximum speed specified in Table 1.  
DAMPER VOLTAGE FOR MAX VENTILATION RATE  
C06039  
Fig. 45 --- CO Sensor Maximum Range Setting  
2
5. Set movable flange at nearest keyway of pulley hub and  
tighten setscrew. (See Table 1 for speed change for each  
full turn of pulley flange.)  
CO Sensor Configuration  
2
The CO sensor has preset standard voltage settings that can be  
2
selected anytime after the sensor is powered up. (See Table 8.)  
6. Adjust belt tension and align fan and motor pulleys per  
guidance below.  
Use setting 1 or 2 for Carrier equipment. (See Table 8.)  
NOTE: Once the required flange position is determined for the  
correct blower rpm, it is recommended (but not required) that the  
variable pitch pulley be replaced with a corresponding size fixed  
sheave pulley.  
1. Press Clear and Mode buttons. Hold at least 5 seconds  
until the sensor enters the Edit mode.  
2. Press Mode twice. The STDSET Menu will appear.  
3. Use the Up/Down button to select the preset number. (See  
Table 8.)  
4. Press Enter to lock in the selection.  
To align fan and motor pulleys:  
1. Loosen fan pulley setscrews.  
2. Slide fan pulley along fan shaft.  
5. Press Mode to exit and resume normal operation.  
3. Make angular alignment by loosening motor from mount-  
ing.  
To adjust belt tension:  
The custom settings of the CO sensor can be changed anytime  
after the sensor is energized. Follow the steps below to change the  
non-standard settings:  
2
1. Press Clear and Mode buttons. Hold at least 5 seconds  
until the sensor enters the Edit mode.  
1. Loosen fan motor mounting nuts.  
2. Slide motor mounting plate away from fan scroll for  
1
2. Press Mode twice. The STDSET Menu will appear.  
proper belt tension ( / -in. deflection with 7 to 10 lb of  
2
force).  
3. Use the Up/Down button to toggle to the NONSTD menu  
and press Enter.  
3. Tighten motor mounting nuts.  
4. Use the Up/Down button to toggle through each of the  
nine variables, starting with Altitude, until the desired  
setting is reached.  
4. Adjust bolt and tighten nut to secure motor in fixed  
position.  
5. Press Mode to move through the variables.  
6. Press Enter to lock in the selection, then press Mode to  
continue to the next variable.  
41  
Table 8—CO Sensor Standard Settings  
2
VENTILATION  
RATE  
(cfm/Person)  
CO  
OPTIONAL  
RELAY  
2
ANALOG  
OUTPUT  
CONTROL RANGE RELAY SETPOINT HYSTERESIS  
SETTING  
EQUIPMENT  
OUTPUT  
(ppm)  
(ppm)  
(ppm)  
0-10V  
Proportional  
Proportional  
Exponential  
Proportional  
Proportional  
Exponential  
Exponential  
Proportional  
Proportional  
Any  
Any  
Any  
15  
0-2000  
1000  
50  
1
2
3
4
5
6
7
8
9
4-20 mA  
2-10V  
Interface w/Standard  
0-2000  
0-2000  
0-1100  
0- 900  
0-1100  
0- 900  
0-9999  
0-2000  
1000  
1100  
1100  
900  
50  
50  
7-20 mA  
Building Control System  
0-10V  
4-20 mA  
0-10V  
50  
4-20 mA  
0-10V  
20  
50  
4-20 mA  
Economizer  
0-10V  
15  
1100  
900  
50  
4-20 mA  
0-10V  
20  
50  
4-20 mA  
0-10V  
Health & Safety  
—
5000  
700  
500  
50  
4-20 mA  
Parking/Air Intakes/  
Loading Docks  
0-10V  
—
4-20 mA  
LEGEND  
ppm — Parts Per Million  
0.35  
0.3  
0.25  
0.2  
0.15  
0.1  
4 & 5 ton  
6 ton  
0.05  
3 ton  
0
0
4000  
1000  
3000  
2000  
5000  
6000  
C06133  
Fig. 46 --- Humidi--MiZert Adaptive Dehumidification System Static Pressure Drop (in. wg)  
C06134  
C06041  
Fig. 47 --- Belt Drive Motor Mounting  
Fig. 48 --- Evaporator--Fan Pulley Adjustment  
42  
Table 9—50HJ and 50he Fan Rpm at Motor Pulley Setting With Standard Motor*  
UNIT  
50HJ  
50HE  
MOTOR PULLEY TURNS OPEN  
1
1
1
1
1
1
0
/
2
1
1 /  
2
2 /  
3
3 /  
4
4 /  
5
5 /  
2
6
2
2
2
2
003  
004  
005  
006  
007  
936  
906  
876  
971  
1102  
1389  
1492  
846  
935  
1061  
1354  
1445  
816  
898  
1019  
1318  
1399  
786  
862  
978  
1283  
1352  
756  
826  
936  
1248  
1305  
726  
789  
895  
1212  
1259  
696  
753  
853  
1177  
1212  
666  
716  
812  
1141  
1166  
639  
680  
770  
1106  
1119  
—
—
—
1070  
—
—
—
—
1035  
—
1044  
1185  
1460  
1585  
1008  
1144  
1425  
1538  
*Approximate fan rpm shown (standard motor/drive).  
Table 10—50HJ, 50HE Fan Rpm at Motor Pulley Setting With High-Static Motor*  
MOTOR PULLEY TURNS OPEN  
UNIT  
1
1
1
1
1
1
0
/
2
1
1 /  
2
2 /  
3
3 /  
4
4 /  
5
5 /  
2
6
2
2
2
2
004  
005  
006  
007  
1455  
1455  
1685  
1685  
1423  
1423  
1589  
1589  
1392  
1392  
1557  
1557  
1360  
1360  
1525  
1525  
1328  
1328  
1493  
1493  
1297  
1297  
1460  
1460  
1265  
1265  
1428  
1428  
1233  
1233  
1396  
1396  
1202  
1202  
1364  
1364  
1170  
1170  
1332  
1332  
1138  
1138  
1300  
1300  
1107  
1107  
—
1075  
1075  
—
—
—
*Approximate fan rpm shown (high-static motor/drive).  
Table 11—Evaporator-Fan Motor Data — Standard Motor  
UNIT  
50HJ  
50HE  
UNIT  
PHASE  
MAXIMUM  
CONTINUOUS BHP*  
MAXIMUM  
OPERATING WATTS*  
MAXIMUM  
AMP DRAW  
UNIT VOLTAGE  
003  
ALL  
0.58  
1.20  
580  
2.0  
75.0  
Single  
1000  
208/230  
208/230  
460  
4.9  
4.9  
2.2  
2.2  
4.9  
4.9  
2.2  
2.2  
9.2  
6.7  
3.0  
3.0  
6.7  
3.0  
3.0  
004  
Three  
Single  
1.20  
1.20  
1000  
1000  
575  
208/230  
208/230  
460  
005  
Three  
Single  
1.20  
1.30  
1000  
1650  
575  
208/230  
208/230  
460  
006  
007  
Three  
2.40  
2120  
575  
208/230  
460  
Three  
2.40  
2120  
575  
LEGEND  
Bhp — Brake Horsepower  
*Extensive motor and electrical testing on these units ensures that the full horsepower and watts range of the motors can be utilized with confidence. Using the  
fan motors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.  
Table 12—Evaporator-Fan Motor Data — High-Static Motors  
UNIT  
50HJ  
50HE  
UNIT  
PHASE  
MAXIMUM  
CONTINUOUS BHP*  
MAXIMUM  
OPERATING WATTS*  
MAXIMUM  
AMP DRAW  
UNIT VOLTAGE  
208/230  
460  
6.7  
3.0  
3.0  
6.7  
3.0  
3.0  
8.6  
3.9  
3.9  
8.6  
3.9  
3.9  
004  
005  
006  
007  
Three  
Three  
Three  
Three  
2.40  
2.40  
2.90  
2.90  
2120  
2120  
2615  
2615  
575  
208/230  
460  
575  
208/230  
460  
575  
208/230  
460  
575  
LEGEND  
Bhp — Brake Horsepower  
*Extensive motor and electrical testing on these units ensures that the full horsepower and watts range of the motors can be utilized with confidence. Using the  
fan motors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.  
43  
Table 13—Accessory/FIOP Electric Heaters Static Pressure Drop (in. wg) — 50HJ004-007 and 50HE003--006  
CFM  
1800  
0.10  
0.17  
COMPONENT  
600  
0.03  
0.14  
900  
0.05  
0.15  
1200  
0.07  
0.16  
1400  
0.09  
0.16  
1600  
0.09  
0.16  
2000  
0.11  
0.17  
2200  
0.11  
0.17  
2400  
0.12  
0.18  
2600  
0.13  
0.18  
1 Heater Module  
2 Heater Modules  
Table 14—Accessory/FIOP EconoMi$er IV and EconoMi$er2 Static Pressure* (in. wg) — 50HJ004-007 and 50HE003--006  
CFM  
COMPONENT  
1250  
0.045  
—
1500  
0.065  
—
1750  
0.08  
0.1  
2000  
0.12  
0.125  
2250  
0.145  
0.15  
2500  
0.175  
0.18  
2750  
0.22  
0.225  
3000  
0.255  
0.275  
600  
0.01  
---  
800  
0.02  
---  
1000  
0.035  
---  
Vertical EconoMi$er IV and EconoMi$er2  
Horizontal EconoMi$er IV and EconoMi$er2  
LEGEND  
FIOP --- Factor y --- In stal l ed Option  
*The static pressure must be added to external static pressure. The sum and the indoor entering-air cfm should be used in conjunction with the Fan Performance  
tables to determine indoor blower rpm and watts.  
Table 14 — Evaporator-Fan Motor Efficiency  
MOTOR 50HJ  
003,004,005  
006  
EFFICIENCY  
75  
74/84*  
84  
007  
*Single-phase/3-phase.  
NOTE: Convert watts to bhp using the following formula:  
watts input x motor efficiency  
bhp =  
746  
GENERAL FAN PERFORMANCE NOTES  
1. Values include losses for filters, unit casing, and wet coils. See Table 13 and 14 and Fig. 46 for accessory/FIOP static pressure  
information.  
2. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using the  
fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.  
See Table 11 and 12 on this page for additional information.  
3. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.  
4. Interpolation is permissible. Do not extrapolate.  
5. Performance includes clean filter and wet coil.  
Table 15—Fan Performance 50HE003 — Vertical Discharge Units; Standard Motor (Belt Drive)**  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
0.1  
Rpm  
0.2  
Rpm  
0.4  
Rpm  
0.6  
Rpm  
0.8  
Rpm  
1.0  
(Cfm)  
Bhp  
Bhp  
Bhp  
Bhp  
Bhp  
Rpm  
878  
902  
937  
957  
981  
Bhp  
0.37  
0.41  
0.47  
0.53  
0.58  
600  
700  
500  
529  
547  
570  
599  
0.08  
0.09  
0.1  
0.13  
0.15  
531  
567  
592  
620  
650  
0.08  
0.09  
0.12  
0.14  
0.16  
607  
633  
660  
691  
717  
0.14  
0.16  
0.19  
0.22  
0.26  
713  
739  
761  
793  
818  
0.21  
0.24  
0.27  
0.32  
0.36  
788  
816  
845  
870  
894  
0.29  
0.32  
0.37  
0.42  
0.47  
800  
900  
1000  
44  
Table 16—Fan Performance 50HJ004, 50HE004 — Vertical Discharge Units; Standard Motor  
(Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
566  
598  
632  
666  
701  
737  
774  
Bhp  
0.14  
0.17  
0.21  
0.25  
0.30  
0.36  
0.42  
Watts  
142  
173  
210  
252  
300  
355  
417  
Rpm  
690  
718  
748  
778  
809  
842  
875  
Bhp  
0.23  
0.27  
0.31  
0.36  
0.42  
0.48  
0.55  
Watts Rpm  
Bhp  
0.32  
0.37  
0.42  
0.48  
0.54  
0.61  
0.69  
Watts  
320  
366  
418  
476  
540  
610  
689  
Rpm  
879  
903  
929  
956  
983  
1012  
1041  
Bhp  
0.42  
0.47  
0.53  
0.60  
0.67  
0.75  
0.83  
Watts  
418  
471  
530  
594  
665  
744  
830  
Rpm  
957  
981  
1006  
1031  
1057  
1085  
1112  
Bhp  
0.52  
0.58  
0.65  
0.72  
0.80  
0.89  
0.98  
Watts  
522  
581  
646  
718  
796  
881  
974  
900  
1000  
1100  
1200  
1300  
1400  
1500  
228  
267  
311  
361  
418  
481  
551  
791  
817  
844  
873  
902  
932  
962  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
1.4  
Bhp  
0.75  
0.82  
0.90  
0.98  
1.07  
1.17  
—
1.8  
Bhp  
0.99  
1.07  
1.16  
—
—
—
—
2.0  
Bhp  
1.11  
1.20  
—
—
—
—
—
Rpm  
1029  
1052  
1076  
1100  
1126  
1152  
1179  
Bhp  
0.63  
0.70  
0.77  
0.85  
0.94  
1.03  
1.13  
Watts  
630  
695  
767  
845  
930  
1023  
1123  
Rpm  
1095  
1118  
1141  
1165  
1189  
1215  
—
Watts  
742  
814  
892  
977  
1069  
1168  
—
Rpm  
1157  
1179  
1202  
1225  
—
Bhp  
0.86  
0.94  
1.03  
1.12  
—
Watts  
859  
937  
1021  
1112  
—
Rpm  
1216  
1237  
1260  
—
—
—
—
Watts  
980  
1064  
1154  
—
—
—
—
Rpm  
1272  
1293  
—
—
—
Watts  
1105  
1195  
—
—
—
900  
1000  
1100  
1200  
1300  
1400  
1500  
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 1.20.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 680 to 1044 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
Table 17—Fan Performance 50HJ004, 50he004 — Vertical Discharge Units; High-Static Motor  
(Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
566  
598  
632  
666  
701  
737  
774  
Bhp  
0.14  
0.17  
0.21  
0.25  
0.30  
0.36  
0.42  
Watts  
142  
173  
210  
252  
300  
355  
417  
Rpm  
690  
718  
748  
778  
809  
842  
875  
Bhp  
0.23  
0.27  
0.31  
0.36  
0.42  
0.48  
0.55  
Watts  
228  
267  
311  
361  
418  
481  
551  
Rpm  
791  
817  
844  
873  
902  
932  
962  
Bhp  
0.32  
0.37  
0.42  
0.48  
0.54  
0.61  
0.69  
Watts  
320  
366  
418  
476  
540  
610  
689  
Rpm  
879  
903  
929  
956  
983  
1012  
1041  
Bhp  
0.42  
0.47  
0.53  
0.60  
0.67  
0.75  
0.83  
Watts  
418  
471  
530  
594  
665  
744  
830  
Rpm  
957  
981  
1006  
1031  
1057  
1085  
1112  
Bhp  
0.52  
0.58  
0.65  
0.72  
0.80  
0.89  
0.98  
Watts  
522  
581  
646  
718  
796  
881  
900  
1000  
1100  
1200  
1300  
1400  
1500  
974  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
1.4  
1.8  
2.0  
Rpm  
1029  
1052  
1076  
1100  
1126  
1152  
1179  
Bhp  
0.63  
0.70  
0.77  
0.85  
0.94  
1.03  
1.13  
Watts  
630  
695  
767  
845  
930  
1023  
1123  
Rpm  
1095  
1118  
1141  
1165  
1189  
1215  
1241  
Bhp  
0.75  
0.82  
0.90  
0.98  
1.07  
1.17  
1.28  
Watts  
742  
Rpm  
1157  
1179  
1202  
1225  
1249  
1274  
1300  
Bhp  
0.86  
0.94  
1.03  
1.12  
1.22  
1.32  
1.44  
Watts  
859  
Rpm  
1216  
1237  
1260  
1282  
1306  
1330  
1355  
Bhp  
0.99  
1.07  
1.16  
1.26  
1.36  
1.48  
1.60  
Watts  
980  
Rpm  
1272  
1293  
1314  
1337  
1360  
1384  
1408  
Bhp  
1.11  
1.20  
1.30  
1.40  
1.51  
1.63  
1.76  
Watts  
1105  
1195  
1291  
1395  
1506  
1625  
1752  
900  
1000  
1100  
1200  
1300  
1400  
1500  
814  
937  
1064  
1154  
1252  
1356  
1469  
1590  
892  
977  
1069  
1168  
1275  
1021  
1112  
1211  
1317  
1431  
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 1.20.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 680 to 1044 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
45  
Table 18—Fan Performance 50HJ005, 50HE005 — Vertical Discharge Units; Standard Motor  
(Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
Bhp  
0.48  
0.54  
0.61  
0.69  
0.78  
0.87  
0.98  
1.09  
—
0.8  
Bhp  
0.60  
0.67  
0.75  
0.83  
0.93  
1.03  
1.14  
—
1.0  
Bhp  
0.72  
0.80  
0.89  
0.98  
1.08  
1.19  
—
Rpm  
666  
701  
737  
774  
811  
849  
887  
926  
965  
Bhp  
0.25  
0.30  
0.36  
0.42  
0.49  
0.57  
0.65  
0.75  
0.86  
Watts  
252  
300  
355  
417  
487  
565  
651  
746  
852  
Rpm  
778  
809  
842  
875  
909  
943  
978  
1014  
1050  
Bhp  
0.36  
0.42  
0.48  
0.55  
0.63  
0.72  
0.81  
0.92  
1.03  
Watts Rpm  
Watts  
476  
540  
610  
689  
774  
869  
972  
1084  
—
Rpm  
956  
983  
1012  
1041  
1071  
1101  
1133  
—
Watts  
594  
665  
744  
830  
923  
1025  
1136  
—
Rpm  
1031  
1057  
1085  
1112  
1141  
1170  
—
Watts  
718  
796  
881  
974  
1076  
1185  
—
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
361  
418  
481  
551  
629  
715  
810  
914  
1028  
873  
902  
932  
962  
994  
1026  
1059  
1092  
—
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
Bhp  
0.85  
0.94  
1.03  
1.13  
—
—
—
—
—
1.4  
Bhp  
0.98  
1.07  
1.17  
—
—
—
—
—
1.8  
Bhp  
—
—
—
—
—
—
—
2.0  
Bhp  
—
—
—
—
—
—
—
Rpm  
1100  
1126  
1152  
1179  
—
—
—
—
—
Watts  
845  
930  
1023  
1123  
—
—
—
—
—
Rpm  
1165  
1189  
1215  
—
—
—
—
—
Watts Rpm  
Bhp  
1.12  
—
—
—
Watts  
1112  
—
—
—
Rpm  
—
—
—
—
Watts  
—
—
—
—
—
—
—
—
Rpm  
—
—
—
—
—
—
—
—
Watts  
—
—
—
—
—
—
—
—
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
977  
1069  
1168  
—
1225  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 1.20.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 770 to 1185 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
Table 19—Fan Performance 50HJ005, 50HE005 — Vertical Discharge Units; High-Static Motor  
(Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
666  
701  
737  
774  
811  
849  
887  
926  
965  
Bhp  
0.25  
0.30  
0.36  
0.42  
0.49  
0.57  
0.65  
0.75  
0.86  
Watts  
252  
300  
355  
417  
487  
565  
651  
746  
852  
Rpm  
778  
809  
842  
875  
909  
943  
978  
1014  
1050  
Bhp  
0.36  
0.42  
0.48  
0.55  
0.63  
0.72  
0.81  
0.92  
1.03  
Watts Rpm  
Bhp  
0.48  
0.54  
0.61  
0.69  
0.78  
0.87  
0.98  
1.09  
1.21  
Watts  
476  
540  
610  
689  
774  
869  
972  
1084  
1206  
Rpm  
956  
983  
1012  
1041  
1071  
1101  
1133  
1164  
1197  
Bhp  
0.60  
0.67  
0.75  
0.83  
0.93  
1.03  
1.14  
1.26  
1.39  
Watts  
594  
665  
744  
830  
Rpm  
1031  
1057  
1085  
1112  
1141  
1170  
1200  
1231  
1262  
Bhp  
0.72  
0.80  
0.89  
0.98  
1.08  
1.19  
1.31  
1.44  
1.58  
Watts  
718  
796  
881  
974  
1076  
1185  
1304  
1432  
1570  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
361  
418  
481  
551  
629  
715  
810  
914  
1028  
873  
902  
932  
962  
994  
1026  
1059  
1092  
1127  
923  
1025  
1136  
1257  
1387  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
1.4  
1.8  
2.0  
Bhp  
1.40  
1.51  
1.63  
1.76  
1.90  
2.04  
2.20  
2.37  
—
Rpm  
1100  
1126  
1152  
1179  
1206  
1235  
1264  
1293  
1324  
Bhp  
0.85  
0.94  
1.03  
1.13  
1.24  
1.36  
1.48  
1.62  
1.77  
Watts  
845  
930  
1023  
1123  
1231  
1349  
1475  
1611  
1756  
Rpm  
1165  
1189  
1215  
1241  
1268  
1295  
1323  
1352  
1381  
Bhp  
0.98  
1.07  
1.17  
1.28  
1.40  
1.52  
1.66  
1.80  
1.96  
Watts Rpm  
Bhp  
1.12  
1.22  
1.32  
1.44  
1.56  
1.69  
1.84  
1.99  
2.15  
Watts  
1112  
1211  
1317  
1431  
1553  
1685  
1826  
1976  
2137  
Rpm  
1282  
1306  
1330  
1355  
1381  
1407  
1434  
1461  
1489  
Bhp  
1.26  
1.36  
1.48  
1.60  
1.73  
1.87  
2.02  
2.17  
2.34  
Watts  
1252  
1356  
1469  
1590  
1719  
1858  
2006  
2163  
2332  
Rpm  
1337  
1360  
1384  
1408  
1433  
1459  
1485  
1512  
—
Watts  
1395  
1506  
1625  
1752  
1888  
2034  
2189  
2353  
—
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
977  
1069  
1168  
1275  
1391  
1515  
1649  
1792  
1945  
1225  
1249  
1274  
1300  
1326  
1352  
1380  
1408  
1436  
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.40.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1075 to 1455 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
46  
Table 20—Fan Performance 50HJ006, 50HE006 Single-Phase — Vertical Discharge Units; Standard Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
Bhp  
0.40  
0.46  
0.54  
0.62  
0.71  
0.81  
0.92  
1.05  
1.18  
—
0.4  
Bhp  
0.53  
0.60  
0.68  
0.77  
0.87  
0.98  
1.10  
1.23  
—
0.6  
Bhp  
0.68  
0.75  
0.84  
0.94  
1.04  
1.16  
1.28  
—
0.8  
Bhp  
0.83  
0.92  
1.01  
1.11  
1.22  
—
1.0  
Bhp  
1.00  
1.09  
1.19  
1.29  
—
Rpm  
790  
828  
866  
905  
944  
983  
1023  
1063  
1104  
—
Watts  
353  
412  
478  
551  
633  
723  
821  
929  
1046  
—
Rpm  
897  
931  
966  
1001  
1037  
1073  
1110  
1147  
—
Watts Rpm  
Watts  
600  
670  
747  
832  
925  
1026  
1137  
—
Rpm  
1075  
1104  
1134  
1165  
1197  
—
—
—
—
Watts  
739  
813  
895  
985  
1084  
—
Rpm  
1152  
1180  
1208  
1238  
—
Watts  
888  
966  
1053  
1148  
—
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
471  
536  
608  
687  
774  
870  
975  
1089  
—
991  
1022  
1054  
1087  
1120  
1154  
1189  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
Bhp  
1.18  
1.27  
—
—
—
—
—
—
—
—
—
1.4  
Bhp  
—
—
—
—
—
—
—
—
—
—
—
1.8  
Bhp  
—
—
—
—
—
—
—
—
—
—
—
2.0  
Bhp  
—
—
—
—
—
—
—
—
—
—
—
Rpm  
1224  
1250  
—
—
—
—
—
—
—
Watts  
1045  
1128  
—
—
—
—
—
—
—
Rpm  
—
—
—
—
—
—
—
—
Watts Rpm  
Bhp  
—
—
—
—
—
—
—
—
—
—
—
Watts  
—
Rpm  
—
Watts  
—
—
—
—
—
—
—
—
Rpm  
—
—
—
—
—
—
—
—
Watts  
—
—
—
—
—
—
—
—
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 1.30.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1035 to 1460 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
47  
Table 21—Fan Performance 50HJ006, 50he006 Three-Phase — Vertical Discharge Units; Standard Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
790  
828  
866  
905  
Bhp  
0.40  
0.46  
0.54  
0.62  
0.71  
0.81  
0.92  
1.05  
1.18  
1.32  
1.48  
Watts  
353  
412  
478  
551  
633  
723  
821  
929  
Rpm  
897  
931  
Bhp  
0.53  
0.60  
0.68  
0.77  
0.87  
0.98  
1.10  
1.23  
1.37  
1.52  
1.68  
Watts Rpm  
Bhp  
0.68  
0.75  
0.84  
0.94  
1.04  
1.16  
1.28  
1.41  
1.56  
1.72  
1.89  
Watts  
600  
670  
747  
832  
Rpm  
1075  
1104  
1134  
1165  
1197  
1229  
1262  
1295  
1329  
1364  
1399  
Bhp  
0.83  
0.92  
1.01  
1.11  
1.22  
1.34  
1.47  
1.61  
1.76  
1.93  
2.10  
Watts  
739  
813  
895  
985  
1084  
1190  
1306  
1431  
1567  
1712  
1868  
Rpm  
1152  
1180  
1208  
1238  
1268  
1299  
1330  
1362  
1395  
1428  
1462  
Bhp  
1.00  
1.09  
1.19  
1.29  
1.41  
1.53  
1.67  
1.82  
1.98  
2.15  
2.33  
Watts  
888  
966  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
471  
536  
991  
1022  
1054  
1087  
1120  
1154  
1189  
1224  
1260  
1296  
1333  
966  
608  
1053  
1148  
1251  
1362  
1483  
1614  
1754  
1905  
2067  
1001  
1037  
1073  
1110  
1147  
1185  
1223  
1262  
687  
944  
983  
774  
925  
870  
1026  
1137  
1256  
1386  
1526  
1676  
1023  
1063  
1104  
1145  
1185  
975  
1089  
1212  
1346  
1490  
1046  
1174  
1311  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
Bhp  
1.18  
1.27  
1.37  
1.48  
1.61  
1.74  
1.88  
2.03  
2.19  
2.37  
—
1.4  
Bhp  
1.36  
1.46  
1.57  
1.69  
1.81  
1.95  
2.09  
2.25  
—
1.8  
Bhp  
1.77  
1.87  
1.99  
2.11  
2.25  
2.39  
—
—
—
—
—
2.0  
Bhp  
1.98  
2.09  
2.21  
2.34  
—
—
—
—
—
Rpm  
1224  
1250  
1278  
1306  
1335  
1364  
1395  
1426  
1457  
1489  
—
Watts  
1045  
1128  
1219  
1318  
1426  
1542  
1668  
1804  
1949  
2106  
—
Rpm  
1291  
1316  
1343  
1370  
1398  
1427  
1456  
1486  
—
Watts Rpm  
Bhp  
1.56  
1.66  
1.77  
1.90  
2.03  
2.17  
2.32  
—
Watts  
1387  
1478  
1576  
1683  
1799  
1925  
2060  
—
Rpm  
1414  
1438  
1463  
1489  
1515  
1542  
—
Watts  
1570  
1664  
1766  
1877  
1997  
2126  
—
—
—
—
—
Rpm  
1472  
1495  
1520  
1545  
—
—
—
—
—
Watts  
1761  
1858  
1964  
2078  
—
—
—
—
—
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
1212  
1299  
1394  
1497  
1609  
1730  
1860  
2001  
—
1354  
1379  
1405  
1431  
1458  
1486  
1514  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.40.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1035 to 1460 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
48  
Table 22—Fan Performance 50HJ006, 50HE006 — Vertical Discharge Units; High-Static Motor  
(Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
790  
828  
866  
905  
Bhp  
0.40  
0.46  
0.54  
0.62  
0.71  
0.81  
0.92  
1.05  
1.18  
1.32  
1.48  
Watts  
353  
412  
478  
551  
633  
723  
821  
929  
Rpm  
897  
931  
Bhp  
0.53  
0.60  
0.68  
0.77  
0.87  
0.98  
1.10  
1.23  
1.37  
1.52  
1.68  
Watts Rpm  
Bhp  
0.68  
0.75  
0.84  
0.94  
1.04  
1.16  
1.28  
1.41  
1.56  
1.72  
1.89  
Watts  
600  
670  
747  
832  
Rpm  
1075  
1104  
1134  
1165  
1197  
1229  
1262  
1295  
1329  
1364  
1399  
Bhp  
0.83  
0.92  
1.01  
1.11  
1.22  
1.34  
1.47  
1.61  
1.76  
1.93  
2.10  
Watts  
739  
813  
895  
985  
1084  
1190  
1306  
1431  
1567  
1712  
1868  
Rpm  
1152  
1180  
1208  
1238  
1268  
1299  
1330  
1362  
1395  
1428  
1462  
Bhp  
1.00  
1.09  
1.19  
1.29  
1.41  
1.53  
1.67  
1.82  
1.98  
2.15  
2.33  
Watts  
888  
966  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
471  
536  
991  
1022  
1054  
1087  
1120  
1154  
1189  
1224  
1260  
1296  
1333  
966  
608  
1053  
1148  
1251  
1362  
1483  
1614  
1754  
1905  
2067  
1001  
1037  
1073  
1110  
1147  
1185  
1223  
1262  
687  
944  
983  
774  
925  
870  
1026  
1137  
1256  
1386  
1526  
1676  
1023  
1063  
1104  
1145  
1185  
975  
1089  
1212  
1346  
1490  
1046  
1174  
1311  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
1.4  
1.8  
Bhp  
1.77  
1.87  
1.99  
2.11  
2.25  
2.39  
2.55  
2.72  
2.90  
—
2.0  
Bhp  
1.98  
2.09  
2.21  
2.34  
2.48  
2.63  
2.79  
—
Rpm  
1224  
1250  
1278  
1306  
1335  
1364  
1395  
1426  
1457  
1489  
1522  
Bhp  
1.18  
1.27  
1.37  
1.48  
1.61  
1.74  
1.88  
2.03  
2.19  
2.37  
2.56  
Watts  
1045  
1128  
1219  
1318  
1426  
1542  
1668  
1804  
1949  
2106  
2272  
Rpm  
1291  
1316  
1343  
1370  
1398  
1427  
1456  
1486  
1516  
1547  
1579  
Bhp  
1.36  
1.46  
1.57  
1.69  
1.81  
1.95  
2.09  
2.25  
2.42  
2.60  
2.80  
Watts Rpm  
Bhp  
1.56  
1.66  
1.77  
1.90  
2.03  
2.17  
2.32  
2.48  
2.66  
2.84  
—
Watts  
1387  
1478  
1576  
1683  
1799  
1925  
2060  
2204  
2360  
2526  
—
Rpm  
1414  
1438  
1463  
1489  
1515  
1542  
1570  
1598  
1627  
—
Watts  
1570  
1664  
1766  
1877  
1997  
2126  
2265  
2415  
2574  
—
Rpm  
1472  
1495  
1520  
1545  
1570  
1596  
1623  
—
Watts  
1761  
1858  
1964  
2078  
2202  
2335  
2478  
—
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
1212  
1299  
1394  
1497  
1609  
1730  
1860  
2001  
2151  
2312  
2484  
1354  
1379  
1405  
1431  
1458  
1486  
1514  
1543  
1573  
1603  
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.90.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1300 to 1685 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
49  
Table 23—Fan Performance 50HJ007 — Vertical Discharge Units; Standard Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
Bhp  
0.63  
0.72  
0.82  
0.93  
1.05  
1.18  
1.32  
1.47  
1.63  
1.81  
1.99  
2.20  
—
0.4  
Bhp  
0.80  
0.90  
1.00  
1.12  
1.25  
1.39  
1.54  
1.70  
1.87  
2.06  
2.26  
—
0.6  
Bhp  
0.97  
1.08  
1.19  
1.32  
1.46  
1.60  
1.76  
1.93  
2.12  
2.31  
—
0.8  
Bhp  
1.14  
1.26  
1.39  
1.52  
1.67  
1.82  
1.99  
2.17  
2.36  
—
1.0  
Bhp  
1.32  
1.45  
1.58  
1.72  
1.88  
2.04  
2.22  
—
Rpm  
907  
945  
Watts  
558  
638  
727  
823  
Rpm  
1006  
1042  
1078  
1115  
1152  
1189  
1227  
1265  
1303  
1342  
1381  
—
Watts Rpm  
Watts  
860  
956  
Rpm  
1169  
1201  
1235  
1268  
1302  
1337  
1371  
1406  
1442  
—
Watts  
1015  
1119  
1230  
1350  
1480  
1618  
1767  
1926  
2095  
—
Rpm  
1239  
1271  
1303  
1335  
1368  
1402  
1435  
—
Watts  
1174  
1285  
1403  
1531  
1668  
1814  
1970  
—
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
708  
796  
892  
997  
1111  
1234  
1367  
1510  
1663  
1828  
2003  
—
1092  
1126  
1160  
1195  
1230  
1266  
1302  
1339  
1375  
1412  
—
984  
1060  
1173  
1294  
1425  
1566  
1717  
1878  
2051  
—
1024  
1063  
1103  
1143  
1183  
1224  
1264  
1305  
1346  
—
929  
1044  
1168  
1303  
1448  
1604  
1772  
1951  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
Bhp  
1.51  
1.64  
1.78  
1.93  
2.09  
2.27  
—
—
—
—
—
1.4  
Bhp  
1.69  
1.83  
1.98  
2.14  
2.31  
—
—
—
—
—
1.8  
Bhp  
2.08  
2.23  
2.40  
—
—
—
—
—
2.0  
Bhp  
2.28  
—
—
—
—
—
—
—
Rpm  
1304  
1335  
1366  
1398  
1430  
1462  
—
—
—
—
—
Watts  
1337  
1454  
1580  
1715  
1858  
2012  
—
—
—
—
—
Rpm  
1365  
1395  
1426  
1457  
1488  
—
—
—
—
—
Watts Rpm  
Bhp  
1.88  
2.03  
2.19  
2.35  
—
Watts  
1674  
1804  
1943  
2091  
—
Rpm  
1477  
1506  
1535  
—
Watts  
1848  
1984  
2130  
—
—
—
—
—
—
—
—
—
Rpm  
1528  
—
—
—
—
—
—
—
—
—
—
—
Watts  
2025  
—
—
—
—
—
—
—
—
—
—
—
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
1503  
1627  
1760  
1901  
2052  
—
1422  
1452  
1482  
1512  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.40.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1120 to 1585 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
50  
Table 24—Fan Performance 50HJ007 — Vertical Discharge Units; High-Static Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
Bhp  
0.97  
1.08  
1.19  
1.32  
1.46  
1.60  
1.76  
1.93  
2.12  
2.31  
2.52  
2.74  
—
0.8  
Bhp  
1.14  
1.26  
1.39  
1.52  
1.67  
1.82  
1.99  
2.17  
2.36  
2.56  
2.78  
—
1.0  
Bhp  
1.32  
1.45  
1.58  
1.72  
1.88  
2.04  
2.22  
2.41  
2.60  
2.82  
—
Rpm  
907  
945  
Bhp  
0.63  
0.72  
0.82  
0.93  
1.05  
1.18  
1.32  
1.47  
1.63  
1.81  
1.99  
2.20  
2.41  
Watts  
558  
638  
727  
823  
Rpm  
1006  
1042  
1078  
1115  
1152  
1189  
1227  
1265  
1303  
1342  
1381  
1420  
1459  
Bhp  
0.80  
0.90  
1.00  
1.12  
1.25  
1.39  
1.54  
1.70  
1.87  
2.06  
2.26  
2.47  
2.69  
Watts Rpm  
Watts  
860  
956  
Rpm  
1169  
1201  
1235  
1268  
1302  
1337  
1371  
1406  
1442  
1478  
1514  
—
Watts  
1015  
1119  
1230  
1350  
1480  
1618  
1767  
1926  
2095  
2275  
2467  
—
Rpm  
1239  
1271  
1303  
1335  
1368  
1402  
1435  
1470  
1504  
1539  
—
Watts  
1174  
1285  
1403  
1531  
1668  
1814  
1970  
2136  
2313  
2501  
—
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
708  
1092  
1126  
1160  
1195  
1230  
1266  
1302  
1339  
1375  
1412  
1450  
1488  
—
796  
892  
984  
1060  
1173  
1294  
1425  
1566  
1717  
1878  
2051  
2235  
2431  
—
1024  
1063  
1103  
1143  
1183  
1224  
1264  
1305  
1346  
1387  
997  
929  
1111  
1234  
1367  
1510  
1663  
1828  
2003  
2191  
2391  
1044  
1168  
1303  
1448  
1604  
1772  
1951  
2142  
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
Bhp  
1.51  
1.64  
1.78  
1.93  
2.09  
2.27  
2.45  
2.64  
2.85  
—
1.4  
Bhp  
1.69  
1.83  
1.98  
2.14  
2.31  
2.49  
2.68  
2.89  
—
1.8  
Bhp  
2.08  
2.23  
2.40  
2.57  
2.76  
—
—
—
—
—
2.0  
Bhp  
2.28  
2.44  
2.61  
2.79  
—
—
—
—
—
Rpm  
1304  
1335  
1366  
1398  
1430  
1462  
1495  
1529  
1562  
—
Watts  
1337  
1454  
1580  
1715  
1858  
2012  
2175  
2349  
2533  
—
Rpm  
1365  
1395  
1426  
1457  
1488  
1520  
1552  
1585  
—
Watts Rpm  
Bhp  
1.88  
2.03  
2.19  
2.35  
2.53  
2.72  
—
Watts  
1674  
1804  
1943  
2091  
2249  
2416  
—
Rpm  
1477  
1506  
1535  
1565  
1596  
—
—
—
—
Watts  
1848  
1984  
2130  
2284  
2449  
—
—
—
—
—
Rpm  
1528  
1557  
1586  
1616  
—
—
—
—
—
Watts  
2025  
2168  
2319  
2481  
—
—
—
—
—
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
1503  
1627  
1760  
1901  
2052  
2212  
2383  
2564  
—
1422  
1452  
1482  
1512  
1543  
1574  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.90.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1300 to 1685 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
Table 25—Fan Performance 50HE003 — Horizontal Discharge Units; Standard Motor (Belt Drive)**  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
(Cfm)  
0.1  
Rpm  
0.2  
Rpm  
0.4  
Rpm  
0.6  
Rpm  
0.8  
Rpm  
1.0  
Bhp  
Bhp  
Bhp  
Bhp  
Bhp  
Rpm  
868  
892  
927  
947  
971  
Bhp  
0.37  
0.41  
0.47  
0.53  
0.58  
600  
700  
490  
519  
537  
560  
589  
0.08  
0.09  
0.1  
0.13  
0.15  
521  
557  
582  
610  
640  
0.08  
0.09  
0.12  
0.14  
0.16  
597  
623  
650  
681  
707  
0.14  
0.16  
0.19  
0.22  
0.26  
703  
729  
751  
783  
808  
0.21  
0.24  
0.27  
0.32  
0.36  
788  
816  
845  
870  
894  
0.29  
0.32  
0.37  
0.42  
0.47  
800  
900  
1000  
51  
Table 26—Fan Performance 50HJ004, 50HE004 — Horizontal Discharge Units; Standard Motor  
(Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
554  
583  
612  
643  
674  
706  
738  
Bhp  
0.14  
0.16  
0.20  
0.23  
0.28  
0.33  
0.38  
Watts  
134  
163  
195  
233  
276  
324  
Rpm  
681  
707  
735  
762  
791  
820  
849  
Bhp  
0.22  
0.26  
0.30  
0.35  
0.40  
0.45  
0.52  
Watts Rpm  
Bhp  
0.32  
0.36  
0.41  
0.46  
0.52  
0.59  
0.66  
Watts  
316  
358  
406  
459  
517  
582  
653  
Rpm  
870  
894  
919  
944  
970  
997  
1024  
Bhp  
0.42  
0.47  
0.52  
0.58  
0.65  
0.72  
0.80  
Watts  
416  
465  
519  
579  
645  
717  
796  
Rpm  
947  
971  
Bhp  
0.53  
0.58  
0.64  
0.71  
0.78  
0.86  
0.95  
Watts  
523  
578  
638  
705  
777  
857  
942  
900  
1000  
1100  
1200  
1300  
1400  
1500  
222  
257  
298  
344  
395  
451  
515  
783  
808  
834  
860  
887  
914  
942  
995  
1020  
1045  
1071  
1097  
379  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
1.4  
Bhp  
0.76  
0.82  
0.90  
0.98  
1.06  
1.15  
—
1.8  
Bhp  
1.01  
1.09  
1.17  
—
—
—
—
2.0  
Bhp  
1.14  
—
—
—
—
—
—
Rpm  
1017  
1041  
1065  
1089  
1114  
1139  
1164  
Bhp  
0.64  
0.70  
0.77  
0.84  
0.92  
1.01  
1.10  
Watts  
635  
696  
763  
835  
915  
1000  
1093  
Rpm  
1082  
1105  
1129  
1153  
1177  
1202  
—
Watts Rpm  
Bhp  
0.88  
0.95  
1.03  
1.12  
—
Watts  
876  
948  
1026  
1111  
—
Rpm  
1200  
1223  
1245  
—
Watts  
1004  
1081  
1165  
—
—
—
—
Rpm  
1254  
—
—
—
—
—
—
Watts  
1136  
—
—
—
—
—
—
900  
1000  
1100  
1200  
1300  
1400  
1500  
753  
820  
892  
971  
1056  
1149  
—
1143  
1166  
1189  
1212  
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 1.20.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 680 to 1044 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
Table 27—Fan Performance 50HJ004, 50HE004 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
554  
583  
612  
643  
674  
706  
738  
Bhp  
0.14  
0.16  
0.20  
0.23  
0.28  
0.33  
0.38  
Watts  
134  
163  
195  
233  
276  
324  
379  
Rpm  
681  
707  
735  
762  
791  
820  
849  
Bhp  
0.22  
0.26  
0.30  
0.35  
0.40  
0.45  
0.52  
Watts Rpm  
Bhp  
0.32  
0.36  
0.41  
0.46  
0.52  
0.59  
0.66  
Watts  
316  
358  
406  
459  
517  
582  
653  
Rpm  
870  
894  
919  
944  
970  
997  
1024  
Bhp  
0.42  
0.47  
0.52  
0.58  
0.65  
0.72  
0.80  
Watts  
416  
465  
519  
579  
645  
717  
796  
Rpm  
947  
971  
Bhp  
0.53  
0.58  
0.64  
0.71  
0.78  
0.86  
0.95  
Watts  
523  
578  
638  
705  
777  
857  
942  
900  
1000  
1100  
1200  
1300  
1400  
1500  
222  
257  
298  
344  
395  
451  
515  
783  
808  
834  
860  
887  
914  
942  
995  
1020  
1045  
1071  
1097  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
1.4  
1.8  
2.0  
Rpm  
1017  
1041  
1065  
1089  
1114  
1139  
1164  
Bhp  
0.64  
0.70  
0.77  
0.84  
0.92  
1.01  
1.10  
Watts  
635  
Rpm  
1082  
1105  
1129  
1153  
1177  
1202  
1227  
Bhp  
0.76  
0.82  
0.90  
0.98  
1.06  
1.15  
1.25  
Watts Rpm  
Bhp  
0.88  
0.95  
1.03  
1.12  
1.21  
1.31  
1.41  
Watts  
876  
Rpm  
1200  
1223  
1245  
1269  
1292  
1316  
1341  
Bhp  
1.01  
1.09  
1.17  
1.26  
1.36  
1.47  
1.58  
Watts  
1004  
1081  
1165  
1256  
1353  
1457  
1570  
Rpm  
1254  
1276  
1299  
1322  
1346  
1369  
1394  
Bhp  
1.14  
1.23  
1.32  
1.41  
1.52  
1.63  
1.75  
Watts  
1136  
1219  
1308  
1404  
1508  
1618  
1736  
900  
1000  
1100  
1200  
1300  
1400  
1500  
753  
820  
1143  
1166  
1189  
1212  
1236  
1261  
1285  
696  
948  
763  
892  
1026  
1111  
1202  
1301  
1407  
835  
971  
915  
1056  
1149  
1248  
1000  
1093  
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.40.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1075 to 1455 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
52  
Table 28—Fan Performance 50HJ005, 50he005 — Horizontal Discharge Units; Standard Motor  
(Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
Bhp  
0.58  
0.65  
0.72  
0.80  
0.89  
0.98  
1.08  
1.19  
—
1.0  
Bhp  
0.71  
0.78  
0.86  
0.95  
1.04  
1.14  
—
Rpm  
643  
674  
706  
738  
771  
804  
837  
871  
906  
Bhp  
0.23  
0.28  
0.33  
0.38  
0.44  
0.51  
0.59  
0.67  
0.76  
Watts  
233  
276  
324  
379  
440  
507  
582  
665  
756  
Rpm  
762  
791  
820  
849  
879  
910  
941  
972  
1004  
Bhp  
0.35  
0.40  
0.45  
0.52  
0.59  
0.66  
0.75  
0.84  
0.94  
Watts Rpm  
Bhp  
0.46  
0.52  
0.59  
0.66  
0.74  
0.82  
0.91  
1.02  
1.12  
Watts  
459  
517  
582  
653  
731  
816  
909  
1010  
1119  
Rpm  
944  
970  
Watts  
579  
645  
717  
796  
881  
974  
1075  
1184  
—
Rpm  
1020  
1045  
1071  
1097  
1124  
1151  
—
Watts  
705  
777  
857  
942  
1035  
1136  
—
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
344  
395  
451  
515  
584  
661  
745  
837  
938  
860  
887  
914  
942  
971  
1000  
1029  
1059  
1089  
997  
1024  
1051  
1079  
1107  
1136  
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
Bhp  
0.84  
0.92  
1.01  
1.10  
1.20  
—
1.4  
Bhp  
0.98  
1.06  
1.15  
—
—
—
—
—
1.8  
Bhp  
—
—
—
—
—
—
—
2.0  
Bhp  
—
—
—
—
—
—
—
Rpm  
1089  
1114  
1139  
1164  
1190  
—
—
—
—
Watts  
835  
915  
1000  
1093  
1193  
—
—
—
—
Rpm  
1153  
1177  
1202  
—
—
—
—
—
Watts Rpm  
Bhp  
1.12  
—
—
—
Watts  
1111  
—
—
—
Rpm  
—
—
—
—
Watts  
—
—
—
—
—
—
—
—
Rpm  
—
—
—
—
—
—
—
—
Watts  
—
—
—
—
—
—
—
—
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
971  
1056  
1149  
—
1212  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 1.20.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 770 to 1185 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
Table 29—Fan Performance 50HJ005, 50HE005 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
643  
674  
706  
738  
771  
804  
837  
871  
906  
Bhp  
0.23  
0.28  
0.33  
0.38  
0.44  
0.51  
0.59  
0.67  
0.76  
Watts  
233  
276  
324  
379  
440  
507  
582  
665  
756  
Rpm  
762  
791  
820  
849  
879  
910  
941  
972  
1004  
Bhp  
0.35  
0.40  
0.45  
0.52  
0.59  
0.66  
0.75  
0.84  
0.94  
Watts Rpm  
Bhp  
0.46  
0.52  
0.59  
0.66  
0.74  
0.82  
0.91  
1.02  
1.12  
Watts  
459  
517  
582  
653  
731  
816  
909  
1010  
1119  
Rpm  
944  
970  
Bhp  
0.58  
0.65  
0.72  
0.80  
0.89  
0.98  
1.08  
1.19  
1.31  
Watts  
579  
645  
717  
796  
881  
974  
1075  
1184  
1301  
Rpm  
1020  
1045  
1071  
1097  
1124  
1151  
1178  
1206  
1234  
Bhp  
0.71  
0.78  
0.86  
0.95  
1.04  
1.14  
1.25  
1.37  
1.49  
Watts  
705  
777  
857  
942  
1035  
1136  
1244  
1361  
1486  
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
344  
395  
451  
515  
584  
661  
745  
837  
938  
860  
887  
914  
942  
971  
1000  
1029  
1059  
1089  
997  
1024  
1051  
1079  
1107  
1136  
1165  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
1.4  
1.8  
2.0  
Bhp  
1.41  
1.52  
1.63  
1.75  
1.87  
2.01  
2.15  
2.31  
—
Rpm  
1089  
1114  
1139  
1164  
1190  
1217  
1244  
1271  
1298  
Bhp  
0.84  
0.92  
1.01  
1.10  
1.20  
1.31  
1.42  
1.55  
1.68  
Watts  
835  
915  
1000  
1093  
1193  
1301  
1417  
1541  
1674  
Rpm  
1153  
1177  
1202  
1227  
1252  
1278  
1305  
1331  
1358  
Bhp  
0.98  
1.06  
1.15  
1.25  
1.36  
1.48  
1.60  
1.73  
1.87  
Watts Rpm  
Bhp  
1.12  
1.21  
1.31  
1.41  
1.53  
1.65  
1.78  
1.92  
2.07  
Watts  
1111  
1202  
1301  
1407  
1520  
1642  
1772  
1911  
2059  
Rpm  
1269  
1292  
1316  
1341  
1366  
1391  
1416  
1442  
1468  
Bhp  
1.26  
1.36  
1.47  
1.58  
1.70  
1.83  
1.97  
2.11  
2.27  
Watts  
1256  
1353  
1457  
1570  
1690  
1818  
1955  
2101  
2256  
Rpm  
1322  
1346  
1369  
1394  
1418  
1443  
1468  
1494  
—
Watts  
1404  
1508  
1618  
1736  
1863  
1998  
2141  
2294  
—
1200  
1300  
1400  
1500  
1600  
1700  
1800  
1900  
2000  
971  
1056  
1149  
1248  
1355  
1470  
1593  
1724  
1865  
1212  
1236  
1261  
1285  
1311  
1336  
1362  
1388  
1415  
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.40.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1075 to 1455 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
53  
Table 30—Fan Performance 50HJ006, 50HE006 Single-Phase — Horizontal Discharge Units;  
Standard Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
Bhp  
0.45  
0.51  
0.58  
0.65  
0.73  
0.82  
0.92  
1.02  
1.14  
1.26  
—
0.6  
Bhp  
0.59  
0.65  
0.72  
0.80  
0.89  
0.98  
1.08  
1.19  
—
0.8  
Bhp  
0.74  
0.81  
0.88  
0.96  
1.05  
1.15  
1.26  
—
1.0  
Bhp  
0.91  
0.98  
1.06  
1.14  
1.23  
—
Rpm  
724  
757  
790  
823  
857  
892  
927  
962  
997  
1033  
1069  
Bhp  
0.33  
0.39  
0.45  
0.52  
0.59  
0.67  
0.77  
0.87  
0.97  
1.09  
1.22  
Watts  
295  
343  
398  
458  
525  
599  
680  
769  
865  
970  
1084  
Rpm  
837  
866  
894  
924  
955  
986  
1017  
1050  
1082  
1115  
—
Watts Rpm  
Watts  
524  
580  
643  
712  
787  
870  
960  
1059  
—
Rpm  
1028  
1050  
1074  
1099  
1125  
1151  
1178  
—
Watts  
660  
719  
784  
857  
936  
1022  
1116  
—
Rpm  
1111  
1132  
1154  
1177  
1201  
—
Watts  
808  
870  
938  
1013  
1096  
—
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
402  
455  
514  
579  
650  
729  
815  
909  
1010  
1120  
—
937  
962  
988  
1015  
1043  
1072  
1101  
1131  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
Bhp  
1.09  
1.16  
1.24  
—
—
—
—
—
1.4  
Bhp  
1.29  
—
—
—
—
—
—
—
1.8  
Bhp  
—
—
—
—
—
—
—
—
—
—
—
2.0  
Bhp  
—
—
—
—
—
—
—
—
—
—
—
Rpm  
1188  
1208  
1229  
—
—
—
—
—
Watts  
970  
1033  
1103  
—
—
—
—
—
Rpm  
1261  
—
—
—
—
—
—
—
Watts Rpm  
Bhp  
—
—
—
—
—
—
—
—
—
—
—
Watts  
—
Rpm  
—
Watts  
—
—
—
—
—
—
—
—
Rpm  
—
—
—
—
—
—
—
—
Watts  
—
—
—
—
—
—
—
—
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
1143  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 1.30.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1035 to 1460 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
54  
Table 31—Fan Performance 50HJ006, 50HE006 Three-Phase — Horizontal Discharge Units;  
Standard Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
724  
757  
790  
823  
857  
892  
927  
962  
997  
1033  
1069  
Bhp  
0.33  
0.39  
0.45  
0.52  
0.59  
0.67  
0.77  
0.87  
0.97  
1.09  
1.22  
Watts  
295  
343  
398  
458  
525  
599  
680  
769  
865  
970  
1084  
Rpm  
837  
866  
894  
924  
955  
986  
1017  
1050  
1082  
1115  
1149  
Bhp  
0.45  
0.51  
0.58  
0.65  
0.73  
0.82  
0.92  
1.02  
1.14  
1.26  
1.39  
Watts Rpm  
Bhp  
0.59  
0.65  
0.72  
0.80  
0.89  
0.98  
1.08  
1.19  
1.31  
1.44  
1.58  
Watts  
524  
580  
643  
712  
787  
870  
960  
1059  
1165  
1279  
1403  
Rpm  
1028  
1050  
1074  
1099  
1125  
1151  
1178  
1206  
1235  
1264  
1293  
Bhp  
0.74  
0.81  
0.88  
0.96  
1.05  
1.15  
1.26  
1.37  
1.50  
1.63  
1.77  
Watts  
660  
719  
784  
857  
Rpm  
1111  
1132  
1154  
1177  
1201  
1226  
1251  
1277  
1304  
1332  
1360  
Bhp  
0.91  
0.98  
1.06  
1.14  
1.23  
1.33  
1.44  
1.56  
1.69  
1.83  
1.98  
Watts  
808  
870  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
402  
455  
514  
579  
650  
729  
815  
909  
937  
962  
988  
938  
1015  
1043  
1072  
1101  
1131  
1161  
1192  
1223  
1013  
1096  
1185  
1283  
1389  
1503  
1625  
1757  
936  
1022  
1116  
1218  
1329  
1448  
1576  
1010  
1120  
1239  
EXTERNAL STTIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
1.4  
Bhp  
1.29  
1.36  
1.44  
1.53  
1.63  
1.74  
1.85  
1.98  
2.11  
2.26  
—
1.8  
Bhp  
1.71  
1.79  
1.88  
1.97  
2.07  
2.18  
2.30  
—
2.0  
Bhp  
1.95  
2.02  
2.11  
2.20  
2.31  
—
—
—
—
—
Rpm  
1188  
1208  
1229  
1250  
1273  
1296  
1320  
1345  
1371  
1397  
1424  
Bhp  
1.09  
1.16  
1.24  
1.33  
1.43  
1.53  
1.64  
1.77  
1.90  
2.04  
2.19  
Watts  
970  
Rpm  
1261  
1279  
1299  
1319  
1341  
1363  
1386  
1409  
1434  
1459  
—
Watts Rpm  
Bhp  
1.49  
1.57  
1.65  
1.74  
1.84  
1.95  
2.07  
2.20  
2.34  
—
Watts  
1327  
1394  
1468  
1549  
1638  
1736  
1842  
1956  
2080  
—
Rpm  
1395  
1412  
1429  
1448  
1467  
1488  
1508  
—
Watts  
1523  
1590  
1665  
1748  
1839  
1939  
2047  
—
Rpm  
1457  
1474  
1490  
1508  
1527  
—
—
—
—
—
Watts  
1729  
1797  
1873  
1957  
2050  
—
—
—
—
—
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
1143  
1208  
1280  
1360  
1447  
1542  
1646  
1758  
1878  
2008  
—
1330  
1347  
1366  
1385  
1405  
1427  
1448  
1471  
1494  
—
1033  
1103  
1181  
1266  
1359  
1459  
1568  
1686  
1812  
1948  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.40.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1035 to 1460 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
55  
Table 32—Fan Performance 50HJ006, 50HE006 — Horizontal Discharge Units;  
HIGH--STATIC Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Rpm  
724  
757  
790  
823  
857  
892  
927  
962  
997  
1033  
1069  
Bhp  
0.33  
0.39  
0.45  
0.52  
0.59  
0.67  
0.77  
0.87  
0.97  
1.09  
1.22  
Watts  
295  
343  
398  
458  
525  
599  
680  
769  
865  
970  
1084  
Rpm  
837  
866  
894  
924  
955  
986  
1017  
1050  
1082  
1115  
1149  
Bhp  
0.45  
0.51  
0.58  
0.65  
0.73  
0.82  
0.92  
1.02  
1.14  
1.26  
1.39  
Watts Rpm  
Bhp  
0.59  
0.65  
0.72  
0.80  
0.89  
0.98  
1.08  
1.19  
1.31  
1.44  
1.58  
Watts  
524  
580  
643  
712  
787  
870  
960  
1059  
1165  
1279  
1403  
Rpm  
1028  
1050  
1074  
1099  
1125  
1151  
1178  
1206  
1235  
1264  
1293  
Bhp  
0.74  
0.81  
0.88  
0.96  
1.05  
1.15  
1.26  
1.37  
1.50  
1.63  
1.77  
Watts  
660  
719  
784  
857  
Rpm  
1111  
1132  
1154  
1177  
1201  
1226  
1251  
1277  
1304  
1332  
1360  
Bhp  
0.91  
0.98  
1.06  
1.14  
1.23  
1.33  
1.44  
1.56  
1.69  
1.83  
1.98  
Watts  
808  
870  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
402  
455  
937  
962  
514  
988  
938  
579  
650  
729  
815  
1015  
1043  
1072  
1101  
1131  
1161  
1192  
1223  
1013  
1096  
1185  
1283  
1389  
1503  
1625  
1757  
936  
1022  
1116  
1218  
1329  
1448  
1576  
909  
1010  
1120  
1239  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
1.4  
1.8  
2.0  
Bhp  
1.95  
2.02  
2.11  
2.20  
2.31  
2.42  
2.55  
2.68  
2.83  
—
Rpm  
1188  
1208  
1229  
1250  
1273  
1296  
1320  
1345  
1371  
1397  
1424  
Bhp  
1.09  
1.16  
1.24  
1.33  
1.43  
1.53  
1.64  
1.77  
1.90  
2.04  
2.19  
Watts  
970  
Rpm  
1261  
1279  
1299  
1319  
1341  
1363  
1386  
1409  
1434  
1459  
1484  
Bhp  
1.29  
1.36  
1.44  
1.53  
1.63  
1.74  
1.85  
1.98  
2.11  
2.26  
2.42  
Watts Rpm  
Bhp  
1.49  
1.57  
1.65  
1.74  
1.84  
1.95  
2.07  
2.20  
2.34  
2.49  
2.65  
Watts  
1327  
1394  
1468  
1549  
1638  
1736  
1842  
1956  
2080  
2213  
2355  
Rpm  
1395  
1412  
1429  
1448  
1467  
1488  
1508  
1530  
1553  
1576  
1599  
Bhp  
1.71  
1.79  
1.88  
1.97  
2.07  
2.18  
2.30  
2.44  
2.58  
2.73  
2.89  
Watts  
1523  
1590  
1665  
1748  
1839  
1939  
2047  
2164  
2290  
2425  
2571  
Rpm  
1457  
1474  
1490  
1508  
1527  
1546  
1566  
1587  
1609  
—
Watts  
1729  
1797  
1873  
1957  
2050  
2151  
2262  
2380  
2509  
—
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
1143  
1208  
1280  
1360  
1447  
1542  
1646  
1758  
1878  
2008  
2147  
1330  
1347  
1366  
1385  
1405  
1427  
1448  
1471  
1494  
1518  
1543  
1033  
1103  
1181  
1266  
1359  
1459  
1568  
1686  
1812  
1948  
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.90.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1300 to 1685 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
Table 33—Fan Performance 50HJ007 — Horizontal Discharge Units; Standard Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
Bhp  
0.51  
0.59  
0.66  
0.75  
0.85  
0.95  
1.06  
1.19  
1.32  
1.46  
1.61  
1.77  
1.94  
0.4  
Bhp  
0.66  
0.74  
0.83  
0.92  
1.03  
1.14  
1.26  
1.39  
1.53  
1.67  
1.83  
2.00  
2.18  
0.6  
Bhp  
0.82  
0.91  
1.00  
1.10  
1.21  
1.33  
1.46  
1.59  
1.74  
1.90  
2.06  
2.24  
—
0.8  
Bhp  
0.98  
1.08  
1.18  
1.29  
1.40  
1.53  
1.66  
1.81  
1.96  
2.12  
2.30  
—
1.0  
Bhp  
1.15  
1.25  
1.36  
1.48  
1.60  
1.73  
1.87  
2.02  
2.18  
2.35  
—
Rpm  
822  
Watts  
455  
Rpm  
927  
Watts  
589  
Rpm  
1018  
1046  
1075  
1104  
1134  
1164  
1195  
1226  
1257  
1289  
1320  
1353  
—
Watts  
728  
Rpm  
1100  
1127  
1154  
1182  
1210  
1239  
1268  
1297  
1327  
1358  
1388  
—
Watts  
873  
Rpm  
1174  
1200  
1226  
1253  
1280  
1308  
1336  
1364  
1393  
1422  
—
Watts  
1024  
1113  
1208  
1310  
1419  
1537  
1662  
1796  
1938  
2089  
—
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
855  
520  
957  
659  
805  
956  
889  
923  
957  
992  
1026  
1061  
1097  
1132  
1168  
1204  
1240  
591  
668  
753  
845  
988  
737  
821  
912  
888  
979  
1045  
1142  
1245  
1357  
1476  
1604  
1740  
1885  
2039  
—
1019  
1051  
1083  
1115  
1148  
1181  
1214  
1247  
1281  
1315  
1077  
1182  
1295  
1416  
1546  
1684  
1832  
1989  
—
1011  
1118  
1233  
1356  
1487  
1629  
1779  
1939  
945  
1053  
1169  
1294  
1428  
1572  
1725  
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
Bhp  
1.33  
1.44  
1.55  
1.67  
1.80  
1.94  
2.09  
2.24  
—
1.4  
Bhp  
1.51  
1.63  
1.74  
1.87  
2.01  
2.15  
2.31  
—
1.8  
Bhp  
1.90  
2.02  
2.15  
2.29  
—
2.0  
Bhp  
2.10  
2.23  
2.36  
—
Rpm  
1244  
1268  
1294  
1320  
1346  
1372  
1400  
1427  
—
Watts  
1182  
1275  
1376  
1483  
1598  
1721  
1852  
1992  
—
Rpm  
1308  
1332  
1357  
1382  
1408  
1434  
1460  
—
Watts  
1345  
1443  
1549  
1662  
1782  
1911  
2047  
—
Rpm  
1369  
1393  
1417  
1441  
1466  
1491  
—
Bhp  
1.70  
1.82  
1.95  
2.08  
2.22  
2.37  
—
Watts  
1513  
1617  
1727  
1845  
1971  
2105  
—
Rpm  
1427  
1450  
1474  
1498  
—
Watts  
1687  
1796  
1911  
2034  
—
Rpm  
1483  
1505  
1528  
—
Watts  
1867  
1979  
2100  
—
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.40.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1120 to 1585 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
56  
Table 34—Fan Performance 50HJ007 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*  
EXTERNAL STATIC PRESSURE (in. wg)  
AIRFLOW  
CFM  
0.2  
0.4  
0.6  
0.8  
1.0  
Bhp  
1.15  
1.25  
1.36  
1.48  
1.60  
1.73  
1.87  
2.02  
2.18  
2.35  
2.53  
2.72  
—
Rpm  
822  
Bhp  
0.51  
0.59  
0.66  
0.75  
0.85  
0.95  
1.06  
1.19  
1.32  
1.46  
1.61  
1.77  
1.94  
Watts  
455  
Rpm  
927  
Bhp  
0.66  
0.74  
0.83  
0.92  
1.03  
1.14  
1.26  
1.39  
1.53  
1.67  
1.83  
2.00  
2.18  
Watts Rpm  
Bhp  
0.82  
0.91  
1.00  
1.10  
1.21  
1.33  
1.46  
1.59  
1.74  
1.90  
2.06  
2.24  
2.43  
Watts  
728  
Rpm  
1100  
1127  
1154  
1182  
1210  
1239  
1268  
1297  
1327  
1358  
1388  
1419  
1451  
Bhp  
0.98  
1.08  
1.18  
1.29  
1.40  
1.53  
1.66  
1.81  
1.96  
2.12  
2.30  
2.48  
2.68  
Watts  
873  
Rpm  
1174  
1200  
1226  
1253  
1280  
1308  
1336  
1364  
1393  
1422  
1452  
1482  
—
Watts  
1024  
1113  
1208  
1310  
1419  
1537  
1662  
1796  
1938  
2089  
2249  
2419  
—
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
589  
659  
1018  
1046  
1075  
1104  
1134  
1164  
1195  
1226  
1257  
1289  
1320  
1353  
1385  
855  
520  
957  
805  
956  
889  
591  
988  
737  
888  
1045  
1142  
1245  
1357  
1476  
1604  
1740  
1885  
2039  
2202  
2376  
923  
668  
1019  
1051  
1083  
1115  
1148  
1181  
1214  
1247  
1281  
1315  
821  
912  
979  
957  
753  
1077  
1182  
1295  
1416  
1546  
1684  
1832  
1989  
2156  
992  
845  
1011  
1118  
1233  
1356  
1487  
1629  
1779  
1939  
1026  
1061  
1097  
1132  
1168  
1204  
1240  
945  
1053  
1169  
1294  
1428  
1572  
1725  
EXTERNAL STATIC PRESSURE (in. wg)  
1.6  
AIRFLOW  
CFM  
1.2  
Bhp  
1.33  
1.44  
1.55  
1.67  
1.80  
1.94  
2.09  
2.24  
2.41  
2.59  
2.77  
2.97  
—
1.4  
Bhp  
1.51  
1.63  
1.74  
1.87  
2.01  
2.15  
2.31  
2.47  
2.64  
2.83  
—
1.8  
Bhp  
1.90  
2.02  
2.15  
2.29  
2.44  
2.59  
2.76  
—
2.0  
Bhp  
2.10  
2.23  
2.36  
2.51  
2.66  
2.82  
—
Rpm  
1244  
1268  
1294  
1320  
1346  
1372  
1400  
1427  
1455  
1483  
1512  
1541  
—
Watts  
1182  
1275  
1376  
1483  
1598  
1721  
1852  
1992  
2140  
2297  
2463  
2640  
—
Rpm  
1308  
1332  
1357  
1382  
1408  
1434  
1460  
1487  
1514  
1541  
—
Watts Rpm  
Bhp  
1.70  
1.82  
1.95  
2.08  
2.22  
2.37  
2.53  
2.70  
2.88  
—
Watts  
1513  
1617  
1727  
1845  
1971  
2105  
2247  
2398  
2557  
—
Rpm  
1427  
1450  
1474  
1498  
1522  
1547  
1572  
—
Watts  
1687  
1796  
1911  
2034  
2165  
2304  
2451  
—
Rpm  
1483  
1505  
1528  
1552  
1575  
1600  
—
Watts  
1867  
1979  
2100  
2227  
2363  
2507  
—
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
1345  
1443  
1549  
1662  
1782  
1911  
2047  
2192  
2346  
2509  
—
1369  
1393  
1417  
1441  
1466  
1491  
1517  
1543  
1570  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:  
LEGEND  
1. Bold cells indicate field-supplied drive is required.  
2. Maximum continuous bhp is 2.90.  
Bhp — Brake Horsepower  
Watts — Input Watts to Motor  
*Motor drive range: 1300 to 1685 rpm. All other rpms require field-supplied  
drive.  
3. See general fan performance notes.  
57  
d. Make sure that all tools and miscellaneous loose parts  
have been removed.  
PRE-START-UP  
START-UP  
Step 1 —Unit Preparation  
Make sure that the unit has been installed in accordance with  
installation instructions and applicable codes.  
Step 2 —Return--Air Filters  
!
WARNING  
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD  
Failure to follow this warning could result in personal  
injury, death, and/or property damage.  
1. Follow recognized safety practices and wear protective  
goggles when checking or servicing a refrigerant system.  
2. Do not operate the compressor or provide any electric  
power to the unit unless the compressor terminal cover is  
in place and secured.  
3. Do not remove the compressor terminal cover until all  
electrical sources are disconnected and tagged with lockout  
tags.  
Make sure the correct filters are installed in the unit (See Table 1).  
Do not operate the unit without return-air filters.  
Step 3 —Outdoor--Air Inlet Screens  
Outdoor-air inlet screen(s) must be in place before operating the  
unit.  
Step 4 —Compressor Mounting  
Compressors are internally spring mounted. Do not loosen or  
remove the compressor holddown bolts.  
4. Relieve all pressure from the system before touching or  
disturbing anything inside the terminal box if  
a
Step 5 —Internal Wiring  
Check all electrical connections in unit control boxes; tighten  
them as required.  
refrigerant leak is suspected around the compressor  
terminals. Use accepted methods to recover the  
refrigerant.  
5. Never attempt to repair a soldered connection while the  
refrigerant system is under pressure.  
6. Do not use a torch to remove any component. The  
system contains oil and refrigerant under pressure. To  
remove a component, wear protective goggles and proceed  
as follows:  
Step 6 —Refrigerant Service Ports  
Each unit system has 4 Schrader--type service ports: one on the  
suction line, one on the liquid line, and 2 on the compressor  
discharge line. Be sure that caps on the ports are tight.  
Step 7 —High Flow Valves  
Two high flow refrigerant valves are located on the hot gas tube  
coming out of the compressor and the suction tubes. Large black  
plastic caps distinguish these valves with O--rings located inside  
the caps. No field access to these valves is available at this time.  
Ensure the plastic caps are in place and tight or the possibility of  
refrigerant leakage could occur.  
a. Shut off electrical power to the unit and tag  
disconnect.  
b. Recover refrigerant to relieve all pressure  
from the system using both high-pressure  
and low-pressure ports.  
c. Cut component connection tubing with a  
tubing cutter, and remove the component  
from the unit.  
d. Carefully unsweat the remaining tubing  
stubs when necessary. Oil can ignite when  
exposed to a torch flame.  
Step 8 —Compressor Rotation  
On 3-phase units be certain that the compressor is rotating in the  
proper direction. To determine whether or not compressor is  
rotating in the proper direction:  
1. Connect the service gauges to suction and discharge  
pressure fittings.  
2. Energize the compressor.  
Proceed as follows to inspect and prepare the unit for initial  
start-up:  
3. The suction pressure should drop and the discharge  
pressure should rise, as is normal on any start-up.  
1. Remove all access panels.  
If the suction pressure does not drop and the discharge pressure  
does not rise to normal levels:  
2. Read and follow instructions on all WARNING,  
CAUTION, and INFORMATION labels attached to, or  
shipped with, unit.  
1. Note that the indoor fan (006 and 007 three-phase units  
only) is probably also rotating in the wrong direction.  
3. Make the following inspections:  
2. Turn off power to the unit and tag disconnect.  
3. Reverse any two of the unit power leads.  
a. Inspect for shipping and handling damages such as  
broken lines, loose parts, or disconnected wires, etc.  
b. Inspect for oil at all refrigerant tubing connections and on  
unit base. Detecting oil generally indicates a refrigerant  
leak. Leak-test all refrigerant tubing connections using  
electronic leak detector, halide torch, or liquid-soap  
solution.  
4. Turn on power to the unit and energize the compressor.  
The suction and discharge pressure levels should now move to  
their normal start-up levels.  
NOTE: When the compressor is rotating in the wrong direction,  
the unit makes more noise and does not provide cooling.  
c. Inspect all field-wiring and factory-wiring connections.  
Be sure that connections are completed and tight. Be sure  
that wires are not in contact with refrigerant tubing or  
sharp edges.  
d. Inspect coil fins. If damaged during shipping and  
handling, carefully straighten fins with a fin comb.  
Step 9 —Cooling  
Set the space thermostat to the OFF position. Set the system  
selector switch at COOL position and the fan switch at AUTO  
position. Adjust the thermostat to a setting below room  
temperature. The compressor starts when contactor closes.  
Check cooling effects at a setting below room temperature.  
Check the unit charge. Refer to Refrigerant Charge section.  
4. Verify the following conditions:  
a. Make sure that condenser-fan blade are correctly  
positioned in fan orifice. See Condenser-Fan Adjustment  
section for more details.  
Reset the thermostat at a position above room temperature. The  
compressor will shut off.  
To Shut Off Unit -- Set the system selector switch at OFF  
position. Resetting the thermostat at a position above room  
temperature shuts off the unit temporarily until the space  
temperature exceeds the thermostat setting. Units are equipped  
b. Make sure that air filter(s) is in place.  
c. Make sure that condensate drain trap is filled with water  
to ensure proper drainage.  
58  
with a Cycle-LOC™ protection device. The unit shuts down on  
any safety trip and remains off; an indicator light on the  
thermostat comes on. Check the reason for the safety trip.  
because of the increase in fresh air, the outdoor--air damper will  
be proportionally closed. Damper position will follow the higher  
demand condition from DCV mode or free cooling mode.  
Compressor restart is accomplished by manual reset at the  
thermostat by turning the selector switch to OFF position and  
then to ON position.  
Damper movement from full closed to full open (or vice versa)  
will take between 1--1/2 and 2--1/2 minutes.  
If free cooling can be used as determined from the appropriate  
changeover command (switch, dry bulb, enthalpy curve,  
differential dry bulb, or differential enthalpy), a call for cooling  
(Y1 closes at the thermostat) will cause the control to modulate  
the dampers open to maintain the supply air temperature set point  
at 50_ to 55_ F.  
Step 10 —Heating  
To start unit, turn on main power supply.  
Set system selector switch at HEAT position and set thermostat at  
a setting above room temperature. Set fan at AUTO position.  
First stage of thermostat energizes the first--stage electric heater  
elements; second stage energizes second--stage electric heater  
elements, if installed. Check heating effects at air supply grille(s).  
As the supply air temperature drops below the set point range of  
50_ to 55_ F, the control will modulate the outdoor--air dampers  
closed to maintain the proper supply--air temperature.  
If electric heaters do not energize, reset limit switch (located on  
evaporator--fan scroll) by pressing button located between  
terminals on the switch.  
Heating -- Units With Economi$er IV  
When the room temperature calls for heat, the heating controls are  
energized as described in the Heating, Units Without Economizer  
section. When the thermostat is satisfied, the economizer damper  
moves to the minimum position.  
Cooling -- Units With Economi$er2, Premierlinkt Control  
and a Thermostat  
TO SHUT OFF UNIT -- Set system selector switch at OFF  
position. Resetting thermostat at  
a
position below room  
temperature temporarily shuts unit off until space temperature  
falls below thermostat setting.  
Step 11 —Safety Relief  
A soft solder joint at the suction line fitting provides pressure  
relief under abnormal temperature and pressure conditions.  
When free cooling is not available, the compressors will be  
controlled by the PremierLink control in response to the Y1 and  
Y2 inputs from the thermostat.  
The PremierLink control will use the following information to  
determine if free cooling is available:  
Step 12 —Ventilation (Continuous Fan)  
Set fan and system selector switches at ON and OFF positions,  
respectively. Evaporator fan operates continuously to provide  
constant air circulation.  
Step 13 —Operating Sequence  
Cooling -- Units Without Economizer  
S
S
Indoor fan has been on for at least 30 seconds.  
The SPT, SAT, and OAT inputs must have valid  
readings.  
S
S
S
OAT must be less than 75_F.  
When thermostat calls for cooling, terminals G and Y1 are  
energized. The indoor-fan contactor (IFC), reversing valve  
solenoid (RVS) and compressor contactor are energized and  
indoor-fan motor, compressor, and outdoor fan starts. The  
outdoor fan motor runs continuously while unit is cooling.  
OAT must be less than SPT.  
Enthalpy must be LOW (may be jumpered if an  
enthalpy sensor not available).  
S
Economizer position is NOT forced.  
Heating -- Units Without Economizer  
Pre-cooling occurs when there is no call from the thermostat  
except G. Pre-cooling is defined as the economizer modulates to  
provide 70_F supply air.  
When the thermostat calls for heating, terminal W1 will be  
energized with 24v. The IFC and heater contactor no. 1 (HC1)  
are energized.  
When free cooling is available the PremierLink control will  
control the compressors and economizer to provide a supply-air  
temperature determined to meet the Y1 and Y2 calls from the  
thermostat using the following three routines. The three control  
routines are based on OAT.  
Cooling -- Units With Economi$er IV  
When free cooling is not available, the compressors will be  
controlled by the zone thermostat. When free cooling is available,  
the outdoor-air damper is modulated by the EconoMi$er IV  
control to provide a 50_ to 55_F supply-air temperature into the  
zone. As the supply-air temperature fluctuates above 55_ or  
below 50_F, the dampers will be modulated (open or close) to  
bring the supply-air temperature back within the set point limits.  
The 3 routines are based on OAT where:  
SASP = Supply Air Set Point  
DXCTLO = Direct Expansion Cooling Lockout Set Point  
PID = Proportional Integral  
Integrated EconoMi$er IV operation on single-stage units  
requires a 2-stage thermostat (Y1 and Y2).  
Routine 1 (OAT < DXCTLO)  
For EconoMi$er IV operation, there must be a thermostat call for  
the fan (G). This will move the damper to its minimum position  
during the occupied mode.  
If the increase in cooling capacity causes the supply--air  
temperature to drop below 45_F, then the outdoor--air damper  
position will be fully closed. If the supply--air temperature  
continues to fall, the outdoor--air damper will close. Control  
returns to normal once the supply--air temperature rises above  
48_F.  
S
Y1 energized – economizer maintains a SASP =  
(SATLO1 + 3).  
S
Y2 energized – economizer maintains a SASP =  
(SATLO2 + 3).  
Routine 2 (DXCTLO < OAT < 68_F)  
S
If only Y1 energized, the economizer maintains a  
SASP = (SATLO1 + 3).  
S
If SAT > SASP + 5 and economizer position > 80%,  
economizer will go to minimum position for 3 minutes  
or until SAT > 68_F.  
If optional power exhaust is installed, as the outdoor--air damper  
opens and closes, the power exhaust fans will be energized and  
deenergized.  
S
S
S
First stage of mechanical cooling will be energized.  
Integrator resets.  
If field--installed accessory CO sensors are connected to the  
EconoMi$er IV control, a demand controlled ventilation strategy  
2
will begin to operate. As the CO level in the zone increases  
2
Economizer opens again and controls to current SASP  
after stage one on for 90 seconds.  
above the CO set point, the minimum position of the damper  
2
will be increased proportionally. As the CO level decreases  
2
59  
S
S
With Y1 and Y2 energized Economizer maintains an  
SASP = SATLO2 + 3.  
TEMPERATURE CONTROL  
75  
74  
If SAT > SASP + 5 and economizer position >80%,  
economizer will go to minimum position for 3 minutes  
or until SAT > 68_F.  
73  
72  
71  
SET POINT  
TEMPERATURE  
S
If compressor one is on then second stage of  
mechanical cooling will be energized; otherwise the  
first stage will be energized.  
70  
69  
68  
S
S
Integrator resets.  
TIME  
Economizer opens again and controls to SASP after  
stage one on for 90 seconds.  
NOTE: PremierLink control performs smart staging of 2 stages of DX  
cooling and up to 3 stages of heat.  
Routine 3 (OAT > 68)  
C06042  
Fig. 49 --- DX Cooling Temperature  
Control Example  
S
S
Economizer is opened 100%.  
Compressors 1 and 2 are cycled based on Y1 and Y2  
using minimum on and off times and watching the  
supply air temperature as compared to SATLO1 and  
SATLO2 set points.  
TEMPERATURE CONTROL  
If optional power exhaust is installed, as the outdoor-air damper  
opens and closes, the power exhaust fans will be energized and  
deenergized.  
75  
74  
73  
If field-installed accessory CO sensors are connected to the  
PremierLink™ control, a PID-controlled demand ventilation  
2
72  
71  
COOL SETPOINT  
TEMPERATURE  
HEAT SETPOINT  
strategy will begin to operate. As the CO level in the zone  
2
70  
increases above the CO set point, the minimum position of the  
2
69  
68  
damper will be increased proportionally. As the CO level  
2
TIME  
decreases because of the increase in fresh air, the outdoor-air  
damper will be proportionally closed.  
Heating -- Units With Economi$er2 Premierlink Control and  
a Thermostat  
C06043  
Fig. 50 --- Economizer Temperature  
When the thermostat calls for heating, terminal W1 is energized.  
The PremierLink control will move the economizer damper to the  
minimum position if there is a call for G and closed if there is a  
call for W1 without G. The IFC and heater contactor no. 1 (HC1)  
are energized. When the thermostat is satisfied and W1 is  
deenergized, the IFM stops after a 45--second time--off delay  
unless G is still maintained.  
Control Example  
When free cooling is available, the outdoor-air damper is  
positioned through the use of a Proportional Integral (PID)  
control process to provide a calculated supply-air temperature  
into the zone. The supply air will maintain the space temperature  
between the heating and cooling set points as indicated in Fig. 50.  
Cooling -- Units With Economi$er2, Premierlink Control and  
a Room Sensor  
The PremierLink control will integrate the compressors stages  
with the economizer based on similar logic as the three routines  
listed in the previous section. The SASP will float up and down  
based on the error reduction calculations that compare space  
temperature and space set point.  
When free cooling is not available, the compressors will be  
controlled by the PremierLink controller using a PID Error  
reduction calculation as indicated by Fig 49.  
The PremierLink controller will use the following information to  
determine if free cooling is available:  
When outside-air temperature conditions require the economizer  
to close for a compressor stage-up sequence, the economizer  
control integrator is reset to zero after the stage-up sequence is  
completed. This prevents the supply-air temperature from  
dropping too quickly and creating a freeze condition that would  
make the compressor turn off prematurely.  
The high space set point is used for DX (direct expansion)  
cooling control, while the economizer space set point is a  
calculated value between the heating and cooling set points. The  
economizer set point will always be at least one degree below the  
cooling set point, allowing for a smooth transition from  
mechanical cooling with economizer assist, back to economizer  
cooling as the cooling set point is achieved. The compressors  
may be used for initial cooling then the PremierLink controller  
will modulate the economizer using an error reduction calculation  
to hold the space temperature between the heating and cooling set  
points. (See Fig. 50.)  
S
S
Indoor fan has been on for at least 30 seconds.  
The SPT, SAT, and OAT inputs must have valid  
readings.  
S
S
S
OAT must be less than 75_F.  
OAT must be less than SPT.  
Enthalpy must be LOW (may be jumpered if and  
enthalpy sensor is not available).  
S
Economizer position is NOT forced.  
The controller uses the following conditions to determine  
economizer cooling:  
S
S
S
Enthalpy is Low  
SAT reading is available  
OAT reading is available  
60  
subcooled to  
a
temperature approaching the evaporator  
S
S
S
SPT reading is available  
OAT ± SPT  
leaving-air temperature. The liquid then enters a thermostatic  
expansion valve (TXV) where the liquid drops to a lower  
pressure. The TXV does not have a pressure drop great enough to  
change the liquid to a 2-phase fluid, so the liquid then enters the  
Acutrol™ device at the evaporator coil.  
Economizer Position is NOT forced  
If any of the above conditions are not met, the economizer  
submaster reference (ECSR) is set to maximum limit and the  
damper moves to minimum position. The operating sequence is  
complete. The ECSR is recalculated every 30 seconds.  
The liquid enters the evaporator coil at a temperature lower than  
in standard cooling operation. This lower temperature increases  
the latent capacity of the rooftop unit. The refrigerant passes  
through the evaporator and is turned into a vapor. The air passing  
over the evaporator coil will become colder than during normal  
operation. However, as this same air passes over the subcooling  
coil, it will be slightly warmed, partially reheating the air.  
If an optional power exhaust is installed, as the outdoor-air  
damper opens and closes, the power exhaust fans will be  
energized and deenergized.  
If field-installed accessory CO sensors are connected to  
the  
PremierLink™ control, a PID-controlled demand ventilation  
strategy will begin to operate. As the CO level in the zone  
2
Subcooling mode operates only when the outside air  
temperature is warmer than 40_F. A factory-installed temperature  
switch located in the condenser section will lock out subcooling  
mode when the outside temperature is cooler than 40_F.  
The scroll compressors are equipped with crankcase heaters to  
provide protection for the compressors due to the additional  
refrigerant charge required by the subcooling/reheat coil.  
2
increases above the CO set point, the minimum position of the  
damper will be increased proportionally. As the CO level  
decreases because of the increase in fresh air, the outdoor-air  
damper will be proportionally closed.  
Heating -- Unit With Economi$er2, Premierlink Control and  
a Room Sensor  
2
2
When in subcooling mode, there is a slight decrease in system  
total gross capacity (5% less), a lower gross sensible capacity  
(20% less), and a greatly increased latent capacity (up to 40%  
more).  
Every 40 seconds the controller will calculate the required heat  
stages (maximum of 3) to maintain Supply-Air Temperature  
(SAT) if the following qualifying conditions are met:  
S
S
S
Indoor fan has been on for at least 30 seconds.  
COOL mode is not active.  
OCCUPIED, TEMP. COMPENSATED START or  
HEAT mode is active.  
S
S
SAT reading is available.  
Fire shutdown mode is not active.  
If all of the above conditions are met, the number of heat stages is  
calculated; otherwise the required number of heat stages will be  
set to 0.  
If the PremierLink controller determines that heat stages are  
required, the economizer damper will be moved to minimum  
position if occupied and closed if unoccupied.  
Staging should be as follows:  
If Heating PID STAGES=2  
S
S
HEAT STAGES=1 (50% capacity) will energize HS1  
HEAT STAGES=2 (100% capacity) will energize HS2  
C06135  
Fig. 51 --- Humidi--MiZer Normal  
Design Cooling Operation  
If Heating PID STAGES=3 and AUXOUT = HS3  
S
S
S
HEAT STAGES=1 (33% capacity) will energize HS1  
HEAT STAGES=2 (66% capacity) will energize HS2  
HEAT STAGES=3 (100% capacity) will energize HS3  
Units With Humidi-Mizer™ Adaptive  
Dehumidification System  
Normal Design Operation  
When the rooftop operates under the normal sequence of  
operation, the compressors will cycle to maintain indoor  
conditions. (See Fig. 51.)  
The Humidi-MiZer adaptive dehumidification system includes a  
factory-installed Motormaster® low ambient control to keep the  
head and suction pressure high, allowing normal design cooling  
mode operation down to 0° F.  
Subcooling Mode  
When subcooling mode is initiated, this will energize (close) the  
liquid line solenoid valve (LLSV) forcing the hot liquid  
refrigerant to enter into the subcooling coil. (See Fig. 52.)  
C06136  
Fig. 52 --- Humidi--MiZer Subcooling  
Mode Operation  
As the hot liquid refrigerant passes through the subcooling/ reheat  
dehumidification coil, it is exposed to the cold supply airflow  
coming through the evaporator coil. The liquid is further  
61  
4. Clean coil using a commercial coil cleaner or dishwasher  
detergent in a pressurized spray canister. Wash both sides  
of coil and flush with clean water. For best results,  
back-flush toward return-air section to remove foreign  
material. Flush condensate pan after completion.  
5. Reinstall economizer and filters.  
6. Reconnect wiring.  
7. Replace access panels.  
Condenser Coil  
Inspect coil monthly. Clean condenser coil annually, and as  
required by location and outdoor air conditions.  
One--Row Coil  
Wash coil with commercial coil cleaner. It is not necessary to  
remove top panel.  
2-Row Coils  
Clean coil as follows:  
C06137  
1. Turn off unit power and tag disconnect.  
2. Remove top panel screws on condenser end of unit.  
Fig. 53 --- Humidi--Mizert Hot Gas  
Reheat Mode Operation  
3. Remove condenser coil corner post. (See Fig. 54.) To hold  
top panel open, place coil corner post between top panel  
and center post. (See Fig. 55.)  
Hot Gas Reheat Mode  
When the humidity levels in the space require humidity control, a  
hot gas solenoid valve (specific to hot gas reheat mode only) will  
open to bypass a portion of hot gas refrigerant around the  
condenser coil. (See Fig. 53.)  
This hot gas will mix with liquid refrigerant leaving the  
condenser coil and flow to the subcooling/reheat  
dehumidification coil. Now the conditioned air coming off the  
evaporator will be cooled and dehumidified, but will be warmed  
to neutral conditions (72_F to 75_F) by the subcooling/reheat  
dehumidification coil.  
The net effect of the rooftop when in hot gas reheat mode is to  
provide nearly all latent capacity removal from the space when  
sensible loads diminish (when outdoor temperature conditions are  
moderate). When in hot gas reheat mode, the unit will operate to  
provide mostly latent capacity and extremely low sensible heat  
ratio capability.  
Similar to the subcooling mode of operation, hot gas reheat mode  
operates only when the outside air temperature is warmer than  
40_F. Below this temperature, a factory installed outside air  
temperature switch will lockout this mode of operation.  
C06044  
Fig. 54 --- Cleaning Condenser Coil  
See Table 36 for the Humidi-Mizer adaptive dehumidification  
system sequence of operation.  
SERVICE  
!
WARNING  
ELECTRICAL SHOCK HAZARD  
Failure to follow this warning could cause personal  
injury or death.  
When sevicing unit, shut off all electrical power to unit  
and install lockout tag.  
C06045  
Step 1 —Cleaning  
Fig. 55 --- Propping Up Top Panel  
Inspect unit interior at the beginning of heating and cooling  
season and as operating conditions require.  
Evaporator Coil  
1. Turn unit power off, tag disconnect. Remove evaporator  
coil access panel.  
2. If economizer or two-position damper is installed, remove  
economizer by disconnecting Molex plug and  
removing mounting screws.  
3. Slide filters out of unit.  
62  
Table 35—Humidi-Mizer Adaptive Dehumidification System Sequence of Operation and  
System Response — Single Compressor Unit (50HE003--006, 50HJ004-007)  
THERMOSTAT INPUT  
ECONOMIZER FUNCTION  
48HE, HJ UNIT OPERATION  
H
Y1  
Y2  
OAT. < Economizer Set Point  
Economizer  
Comp. 1  
Subcooling Mode  
Hot Gas Reheat Mode  
Normal Operation  
Off  
—
—
On  
On  
On  
On  
On  
On  
On  
On  
On  
Off  
On  
Off  
On  
Off  
Off  
No  
No  
Yes  
Yes  
No  
Off  
Off  
On  
On  
Off  
On  
On  
On  
On  
On  
Yes  
Yes  
Yes  
No  
No  
No  
No  
Yes  
Yes  
No  
NOTE: On a thermostat call for W1, all cooling and dehumidification will be off.  
LEGEND  
OAT --- Outdoor Air Temperature  
Fan Motor Bearings  
Fan motor bearings are permanently lubricated. No further  
lubrication is required. No lubrication of condenser-fan or  
evaporator-fan motors is required.  
Evaporator Fan Belt Adjustment  
Inspect evaporator fan belt for wear, proper belt tension, and  
pulley alignment as conditions require or at the beginning of each  
heating and air conditioning season. Refer to Step 7 -- Adjust  
Evaporator Fan Speed for adjustment and alignment procedures.  
Step 3 —Condenser--Fan Adjustment  
Shut off unit power supply. Remove condenser-fan assembly  
(grille, motor, motor cover, and fan) and loosen fan hub  
setscrews. Adjust fan height as shown in Fig. 57. Tighten  
setscrews and replace condenser-fan assembly.  
C06046  
Fig. 56 --- Separating Coil Sections  
UNIT  
FAN HEIGHT (in.) — “A”  
4. Remove device holding coil sections together at return end  
of condenser coil. Carefully separate the outer coil section  
3 to 4 in. from the inner coil section. (See Fig. 57.)  
003-006 AND 007 (208/230 v)  
007 (460 v)  
2.75  
3.50  
5. Use a water hose or other suitable equipment to flush  
down between the 2 coil sections to remove dirt and  
debris. Clean the outer surfaces with a stiff brush in the  
normal manner.  
C06138  
Fig. 57 --- Condenser--Fan Adjustment  
Step 4 —EconoMi$er IV Adjustment  
6. Secure the sections together. Reposition the outer coil  
section and remove the coil corner post from between the  
top panel and center post. Install the coil corner and center  
posts. Replace all screws.  
Refer to Optional EconoMi$er IV and EconoMi$er2 section.  
Condensate Drain  
Step 5 —Refrigerant Charge  
Check and clean each year at the start of the cooling season. In  
winter, keep the drain dry or protect it against freeze-up.  
Filters  
Amount of refrigerant charge is listed on unit nameplate (also  
refer to Table 1). Refer to HVAC Servicing Procedures literature  
available at your local distributor and the following procedures.  
Clean or replace at the start of each heating and cooling season, or  
more often if operating conditions require it. Replacement filters  
must be the same dimensions as the original filters.  
Unit panels must be in place when unit is operating during  
charging procedure. Unit must operate a minimum of 10 minutes  
before checking or adjusting refrigerant charge.  
Outdoor--Air Inlet Screen  
No Charge  
Clean the screen with steam or hot water and a mild detergent. Do  
not use disposable filters in place of screens.  
Use standard evacuating techniques. After evacuating system to  
500 microns, weigh in the specified amount of refrigerant. (Refer  
to Table 1 and unit information plate.)  
Step 2 —Lubrication  
Compressor  
The compressor is charged with the correct amount of oil at the  
factory.  
63  
Low Charge Cooling  
Using Cooling Charging Charts, Fig. 58--61, vary refrigerant  
until the conditions of the charts are met. Note the charging charts  
are different from type normally used. Charts are based on  
charging the units to the correct superheat for the various  
operating conditions. Accurate pressure gage and temperature  
sensing device are required. Connect the pressure gauge to the  
service port on the suction line. Mount the temperature sensing  
device on the suction line and insulate it so that outdoor ambient  
temperature does not affect the reading. Indoor-air cfm must be  
within the normal operating range of the unit. An accurate  
superheat, thermocouple--type or thermistor--type thermometer,  
and a gauge manifold are required when using the superheat  
charging method for evaluating the unit charge. Do not use  
mercury or small dial--type thermometers because they are not  
adequate for this type of measurement.  
C06140  
Fig. 59 --- Cooling Charging Chart,  
Standard 50HJ005  
C06139  
Fig. 58 --- Cooling Charging Chart,  
Standard 50HJ004  
Humidi--Mizer™ System Charging  
The system charge for units with the Humidi-MiZer adaptive  
dehumidification system is greater than that of the standard unit  
alone. The charge for units with this option is indicated on the  
unit nameplate drawing. Also refer to Fig. 62-65. To charge  
systems using the Humidi-MiZer adaptive dehumidification  
system, fully evacuate, recover, and recharge the system to the  
nameplate specified charge level. To check or adjust refrigerant  
charge on systems using the Humidi-MiZer adaptive  
dehumidification system, charge per Fig. 62-65.  
C06141  
Fig. 60 --- Cooling Charging Chart,  
Standard 50HJ006  
64  
C06142  
C06144  
Fig. 61 --- Cooling Charging Chart,  
Fig. 63 --- Cooling Charging Chart, 50HJ005 with  
Optional Humidi--MiZer Adaptive Dehumidification System  
Standard 50HJ007  
NOTE: When using the charging charts, it is important that only  
the subcooling/reheat dehumidification coil liquid line solenoid  
valve be energized. The subcooling/reheat dehumidification coil  
liquid line solenoid valve MUST be energized to use the charging  
charts and the outdoor motor speed controller jumpered to run the  
fan at full speed.  
The charts reference a liquid pressure (psig) and temperature at a  
point between the condenser coil and the subcooling/reheat  
dehumidification coil. A tap is provided on the unit to measure  
liquid pressure entering the subcooling/reheat dehumidification  
coil.  
IMPORTANT: The subcooling mode charging charts (Fig.  
62--65) are to be used ONLY with units having the  
Humidi--MiZer adaptive dehumidification system. DO NOT use  
standard charge (Fig. 58--61) for units with Humidi-- MiZer  
system, and DO NOT use Fig. 62--65 for standard units.  
C06143  
Fig. 62 --- Cooling Charging Chart, 50HJ004 with  
Optional Humidi--MiZer Adaptive Dehumidification System  
65  
If a charging device is used, temperature and pressure readings  
must be accomplished using the charging charts.  
F
C
50HE -- 2 TON CHARGING CHART  
125 52  
115 46  
105 41  
95  
85  
75  
35  
29  
24  
Suction Line Temperature (deg C)  
5.5  
105.0  
10.5  
15.5  
20.5  
25.5  
698.0  
100.0  
95.0  
90.0  
85.0  
80.0  
75.0  
70.0  
65.0  
648.0  
598.0  
548.0  
498.0  
448.0  
42  
52  
62  
72  
Suction Line Temp (deg F)  
C06148  
Fig. 66 --- Cooling Charging Chart,  
C06145  
Standard 50HE003  
Fig. 64 --- Cooling Charging Chart, 50HJ005 with  
Optional Humidi--MiZer Adaptive Dehumidification System  
F
C
50HE - 3 TON CHARGING CHART  
Suction Line Temperature (deg C)  
115 46  
105 41  
95  
85  
75  
35  
29  
24  
6.1  
11.1  
16.1  
21.1  
95.0  
648.2  
598.2  
548.2  
498.2  
448.2  
85.0  
75.0  
65.0  
43  
48  
53  
58  
63  
68  
73  
78  
Suction Line Temp (deg F)  
C06149  
Fig. 67 --- Cooling Charging Chart,  
Standard 50HE004  
F
C
115 46  
105 41  
50HE - 4 TON CHARGING CHART  
Suction Line Temperature (deg C)  
95  
85  
75  
35  
29  
24  
C06146  
Fig. 65 --- Cooling Charging Chart, 50HJ007 with  
Optional Humidi--MiZer Adaptive Dehumidification System  
5.6  
10.6  
15.6  
20.6  
25.6  
692.0  
642.0  
592.0  
542.0  
492.0  
97.0  
To Use Cooling Charging Chart, Standard Unit  
Take the outdoor ambient temperature and read the suction  
pressure gage. Refer to charts to determine what suction  
temperature should be. If suction temperature is high, add  
refrigerant. If suction temperature is low, carefully recover some  
of the charge. Recheck the suction pressure as charge is adjusted.  
87.0  
77.0  
67.0  
Example (Fig. 57):  
Outdoor Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 75°F  
Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 psig  
Suction Temperature should be . . . . . . . . . . . . . . . . . . 48°F  
(Suction temperature may vary ± 5°F.)  
42  
47  
52  
57  
62  
67  
72  
77  
Suction Line Temp (deg F)  
C06150  
Fig. 68 --- Cooling Charging Chart,  
Standard 50HE005  
66  
4. Disconnect wires at T and T1. Place 5.6 kilo-ohm resistor  
across T and T1.  
5. Jumper TR to 1.  
6. Jumper TR to N.  
F
C
50HE -- 5 TON CHARGING CHART  
Suction Line Temperature (deg C)  
115 46  
105 41  
95  
85  
75  
35  
29  
24  
0.0  
5.0  
10.0  
15.0  
20.0  
25.0  
810.0  
710.0  
610.0  
510.0  
410.0  
310.0  
7. If connected, remove sensor from terminals S and +.  
O
115.0  
Connect 1.2 kilo-ohm 4074EJM checkout resistor across  
terminals S and +.  
105.0  
95.0  
85.0  
75.0  
65.0  
55.0  
O
8. Put 620-ohm resistor across terminals S and +.  
R
9. Set minimum position, DCV set point, and exhaust  
potentiometers fully CCW (counterclockwise).  
10. Set DCV maximum position potentiometer fully CW  
(clockwise).  
11. Set enthalpy potentiometer to D.  
12. Apply power (24 vac) to terminals TR and TR1.  
Differential Enthalpy  
42  
47  
52  
57  
62  
67  
72  
77  
Suction Line Temp (deg F)  
To check differential enthalpy:  
C06151  
1. Make sure EconoMi$er IV preparation procedure has been  
performed.  
Fig. 69 --- Cooling Charging Chart,  
Standard 50HE006  
2. Place 620-ohm resistor across S and +.  
O
3. Place 1.2 kilo-ohm resistor across S and +. The Free  
R
To Use Cooling Charging Charts, Units With  
Humidi--Mizer™ Adaptive Dehumidification System  
Cool LED should be lit.  
4. Remove 620-ohm resistor across S and +. The Free Cool  
O
Refer to charts (Fig. 62-65) to determine the proper leaving  
condenser pressure and temperature.  
Example (Fig. 62):  
LED should turn off.  
5. Return EconoMi$er IV settings and wiring to normal  
after completing troubleshooting.  
Leaving Condenser Pressure . . . . . . . . . . . . . . . . . 250 psig  
Leaving Condenser Temperature . . . . . . . . . . . . . . . 105_F  
Single Enthalpy  
To check single enthalpy:  
NOTE: When using the charging charts, it is important that only  
the subcooling/reheat dehumidification coil liquid line solenoid  
valve be energized. The subcooling/reheat dehumidification coil  
liquid line solenoid valve MUST be energized to use the charging  
charts and the outdoor motor speed controller jumpered to run the  
fan at full speed.  
1. Make sure EconoMi$er IV preparation procedure has been  
performed.  
2. Set the enthalpy potentiometer to A (fully CCW). The  
Free Cool LED should be lit.  
3. Set the enthalpy potentiometer to D (fully CW). The Free  
Cool LED should turn off.  
4. Return EconoMi$er IV settings and wiring to normal  
after completing troubleshooting.  
IMPORTANT: Refer to Troubleshooting Tables for additional  
information.  
Step 6 —Replacement Parts  
DCV (Demand Controlled Ventilation) and Power Exhaust  
A complete list of replacement parts may be obtained from any  
Carrier distributor upon request.  
To check DCV and Power Exhaust:  
1. Make sure EconoMi$er IV preparation procedure has been  
performed.  
TROUBLESHOOTING  
Step 1 —Unit Troubleshooting  
Refer to Tables 34-38 for unit troubleshooting details.  
Step 2 —Economi$er IV Troubleshooting  
See Table 39 for EconoMi$er IV logic.  
A functional view of the EconoMi$er IV is shown in Fig. 67.  
Typical settings, sensor ranges, and jumper positions are also  
shown. An EconoMi$er IV simulator program is available from  
Carrier to help with EconoMi$er IV training and  
troubleshooting.  
2. Ensure terminals AQ and AQ1 are open. The LED for  
both DCV and Exhaust should be off. The actuator should  
be fully closed.  
3. Connect a 9-v battery to AQ (positive node) and AQ1  
(negative node). The LED for both DCV and Exhaust  
should turn on. The actuator should drive to between 90  
and 95% open.  
4. Turn the Exhaust potentiometer CW until the Exhaust  
LED turns off. The LED should turn off when the  
potentiometer is approximately 90%. The actuator should  
remain in position.  
Economi$er IV Preparation  
This procedure is used to prepare the EconoMi$er IV for  
troubleshooting. No troubleshooting or testing is done by  
performing the following procedure.  
NOTE: This procedure requires a 9-v battery, 1.2 kilo-ohm  
resistor, and a 5.6 kilo-ohm resistor which are not supplied with  
the EconoMi$er IV.  
5. Turn the DCV set point potentiometer CW until the DCV  
LED turns off. The DCV LED should turn off when the  
potentiometer is approximately 9 v. The actuator should  
drive fully closed.  
6. Turn the DCV and Exhaust potentiometers CCW until the  
Exhaust LED turns on. The exhaust contacts will close 30  
to 120 seconds after the Exhaust LED turns on.  
IMPORTANT: Be sure to record the positions of all  
7. Return EconoMi$er IV settings and wiring to normal  
after completing troubleshooting.  
potentiometers before starting troubleshooting.  
1. Disconnect power at TR and TR1. All LEDs should be  
off. Exhaust fan contacts should be open.  
2. Disconnect device at P and P1.  
3. Jumper P to P1.  
67  
DCV Minimum and Maximum Position  
Economi$er IV Troubleshooting Completion  
To check the DCV minimum and maximum position:  
This procedure is used to return the EconoMi$er IV to operation.  
No troubleshooting or testing is done by performing the  
following procedure.  
1. Make sure EconoMi$er IV preparation procedure has been  
performed.  
1. Disconnect power at TR and TR1.  
2. Connect a 9-v battery to AQ (positive node) and AQ1  
(negative node). The DCV LED should turn on. The  
actuator should drive to between 90 and 95% open.  
3. Turn the DCV Maximum Position potentiometer to  
midpoint. The actuator should drive to between 20 and  
80% open.  
2. Set enthalpy potentiometer to previous setting.  
3. Set DCV maximum position potentiometer to previous  
setting.  
4. Set minimum position, DCV set point, and exhaust  
potentiometers to previous settings.  
4. Turn the DCV Maximum Position potentiometer to fully  
CCW. The actuator should drive fully closed.  
5. Turn the Minimum Position potentiometer to midpoint.  
The actuator should drive to between 20 and 80% open.  
6. Turn the Minimum Position Potentiometer fully CW. The  
actuator should drive fully open.  
5. Remove 620-ohm resistor from terminals S and +.  
6. Remove 1.2 kilo-ohm checkout resistor from terminals S  
R
O
and +. If used, reconnect sensor from terminals S and +.  
O
7. Remove jumper from TR to N.  
8. Remove jumper from TR to 1.  
9. Remove 5.6 kilo-ohm resistor from T and T1. Reconnect  
wires at T and T1.  
7. Remove the jumper from TR and N. The actuator should  
drive fully closed.  
10. Remove jumper from P to P1. Reconnect device at P and  
P1.  
8. Return EconoMi$er IV settings and wiring to normal  
after completing troubleshooting.  
11. Apply power (24 vac) to terminals TR and TR1.  
Supply--Air Input  
To check supply-air input:  
1. Make sure EconoMi$er IV preparation procedure has been  
performed.  
2. Set the Enthalpy potentiometer to A. The Free Cool LED  
turns on. The actuator should drive to between 20 and  
80% open.  
3. Remove the 5.6 kilo-ohm resistor and jumper T to T1. The  
actuator should drive fully open.  
4. Remove the jumper across T and T1. The actuator should  
drive fully closed.  
5. Return EconoMi$er IV settings and wiring to normal  
after completing troubleshooting.  
68  
Table 36—Cooling Service Analysis  
PROBLEM  
CAUSE  
REMEDY  
Power failure.  
Call power company.  
Compressor and Condenser Fan  
Will Not Start.  
Fuse blown or circuit breaker tripped.  
Defective thermostat, contactor, transformer, or  
Replace fuse or reset circuit breaker.  
Replace component.  
control relay.  
Insufficient line voltage.  
Incorrect or faulty wiring.  
Thermostat setting too high.  
Determine cause and correct.  
Check wiring diagram and rewire correctly.  
Lower thermostat setting below room temperature.  
Check wiring and repair or replace.  
Faulty wiring or loose connections in compres-  
Compressor Will Not Start  
But Condenser Fan Runs.  
sor circuit.  
Compressor motor burned out, seized, or in-  
ternal overload open.  
Determine cause. Replace compressor.  
Determine cause and replace.  
Defective run/start capacitor, overload, start  
relay.  
One leg of 3-phase power dead.  
Replace fuse or reset circuit breaker. Determine  
cause.  
Refrigerant overcharge or undercharge.  
Recover refrigerant, evacuate system, and recharge  
Compressor Cycles (Other Than  
Normally Satisfying Thermostat).  
to nameplate.  
Defective compressor.  
Insufficient line voltage.  
Blocked condenser.  
Replace and determine cause.  
Determine cause and correct.  
Determine cause and correct.  
Determine cause and replace.  
Defective run/start capacitor, overload, or start  
relay.  
Defective thermostat.  
Replace thermostat.  
Faulty condenser-fan motor or capacitor.  
Restriction in refrigerant system.  
Dirty air filter.  
Unit undersized for load.  
Thermostat set too low.  
Low refrigerant charge.  
Leaking valves in compressor.  
Air in system.  
Replace.  
Locate restriction and remove.  
Replace filter.  
Decrease load or increase unit size.  
Reset thermostat.  
Locate leak, repair, and recharge.  
Replace compressor.  
Recover refrigerant, evacuate system, and recharge.  
Clean coil or remove restriction.  
Replace filter.  
Compressor Operates Continuously.  
Excessive Head Pressure.  
Condenser coil dirty or restricted.  
Dirty air filter.  
Dirty condenser coil.  
Clean coil.  
Refrigerant overcharged.  
Air in system.  
Recover excess refrigerant.  
Recover refrigerant, evacuate system, and recharge.  
Determine cause and correct.  
Check for leaks, repair, and recharge.  
Replace compressor.  
Remove restriction.  
Check for source and eliminate.  
Replace compressor.  
Condenser air restricted or air short-cycling.  
Low refrigerant charge.  
Compressor valves leaking.  
Restriction in liquid tube.  
High heat load.  
Compressor valves leaking.  
Refrigerant overcharged.  
Dirty air filter.  
Head Pressure Too Low.  
Excessive Suction Pressure.  
Suction Pressure Too Low.  
Recover excess refrigerant.  
Replace filter.  
Low refrigerant charge.  
Metering device or low side restricted.  
Insufficient evaporator airflow.  
Check for leaks, repair, and recharge.  
Remove source of restriction.  
Increase air quantity. Check filter and replace if neces-  
sary.  
Temperature too low in conditioned area.  
Outdoor ambient below 25 F.  
Time off delay not finished.  
Reset thermostat.  
Install low-ambient kit.  
Wait for 30-second off delay.  
Evaporator Fan Will Not Shut Off.  
69  
Table 37—Humidi-MiZer™ Adaptive Dehumidification System Subcooling Mode Service Analysis  
PROBLEM  
CAUSE  
REMEDY  
Subcooling Mode (Liquid Reheat)  
No power to control transformer from  
Check power source and evaporator-fan relay. Ensure all  
Will Not Energize.  
evaporator-fan motor.  
wire connections are tight.  
No power from control transformer to liquid line  
solenoid valve.  
1. Fuse open; check fuse. Ensure continuity of wiring.  
2. Low-pressure switch open. Cycle unit off and allow  
low-pressure switch to reset. Replace switch if it will  
not close.  
3. Transformer bad; check transformer.  
Liquid line solenoid valve will not operate.  
1. Solenoid coil defective; replace.  
2. Solenoid valve stuck open; replace.  
Liquid line solenoid valve will not open.  
Valve is stuck closed; replace valve.  
Low System Capacity.  
Low refrigerant charge or frosted evaporator coil.  
1. Check charge amount. Charge per Fig. 59-62.  
2. Evaporator coil frosted; check and replace low-pres-  
sure switch if necessary.  
Loss of Compressor Superheat  
Conditions with Subcooling/Reheat  
Dehumidification Coil Energized.  
Thermostatic expansion valve (TXV).  
1. Check TXV bulb mounting, and secure tightly to suc-  
tion line.  
2. Replace TXV if stuck open or closed.  
Table 38—Humidi-MiZer™ Adaptive Dehumidification System Hot Gas Reheat Mode Service Analysis  
PROBLEM  
Reheat Mode Will Not Energize.  
CAUSE  
REMEDY  
No power to control transformer from  
Check power source and evaporator-fan relay. Ensure all  
evaporator-fan motor.  
wire connections are tight.  
No power from control transformer to hot gas  
line solenoid valve  
1. Fuse open; check fuse. Ensure continuity of wiring.  
2. Low-pressure switch open. Cycle unit off and allow  
low-pressure switch to reset. Replace switch if it will  
not close.  
3. Transformer bad; check transformer.  
Hot gas line solenoid valve will not operate.  
1. Solenoid coil defective; replace.  
2. Solenoid valve stuck closed; replace.  
Low refrigerant charge or frosted evaporator coil.  
1. Check charge amount. Charge per Fig. 59-62.  
2. Evaporator coil frosted; check and replace low-pres-  
sure switch if necessary.  
Loss of Compressor Superheat  
Conditions with Subcooling/Reheat  
Dehumidification Coil Energized.  
Thermostatic expansion valve (TXV).  
1. Check TXV bulb mounting, and secure tightly to suc-  
tion line.  
2. Replace TXV if stuck open or closed.  
Valve is stuck, replace valve.  
Valve is stuck; replace valve.  
Excessive Superheat.  
Liquid line solenoid valve will not operate.  
Hot gas line solenoid valve will not close.  
Table 39—EconoMi$er IV Input/Output Logic  
INPUTS  
Enthalpy*  
OUTPUTS  
N Terminal†  
Occupied  
Compressor  
Stage Stage  
Demand Control  
Ventilation (DCV)  
Unoccupied  
Y1 Y2  
Outdoor  
Return  
Damper  
Closed  
1
2
On  
Off  
Off  
Off  
Off  
Off  
On  
Off  
Off  
Off  
Off  
Off  
Below set  
High  
Low  
On On  
On Off  
Off Off  
On On  
On Off  
Off Off  
On On  
On Off  
Off Off  
On On  
On Off  
Off Off  
On  
On  
Off  
On  
Off  
Off  
On  
On  
Off  
On  
Off  
Off  
Minimum position  
(DCV LED Off)  
(Free Cooling LED Off)  
Low  
High  
Low  
High  
Modulating** (between min. Modulating** (between  
(Free Cooling LED On)  
position and full-open)  
Minimum position  
closed and full-open)  
Closed  
Above set  
High  
Modulating†† (between min. Modulating†† (between  
position and DCV maximum) closed and DCV  
maximum)  
(DCV LED On)  
(Free Cooling LED Off)  
Low  
Modulating***  
Modulating†††  
(Free Cooling LED On)  
*For single enthalpy control, the module compares outdoor enthalpy to the ABCD set point.  
†Power at N terminal determines Occupied/Unoccupied setting: 24 vac (Occupied), no power (Unoccupied).  
**Modulation is based on the supply-air sensor signal.  
††Modulation is based on the DCV signal.  
***Modulation is based on the greater of DCV and supply-air sensor signals, between minimum position and either maximum position (DCV) or fully open (sup-  
ply-air signal).  
†††Modulation is based on the greater of DCV and supply-air sensor signals, between closed and either maximum position (DCV) or fully open (supply-air sig-  
nal).  
70  
C06053  
Fig. 70 --- EconoMi$er IV Functional View  
71  
START-UP CHECKLIST  
(Remove and Store in Job File)  
I. PRELIMINARY INFORMATION  
MODEL NO.:  
DATE:  
SERIAL NO.:  
TECHNICIAN:  
II. PRE-START-UP (insert checkmark in box as each item is completed)  
j
j
j
j
j
j
j
j
j
VERIFY THAT JOBSITE VOLTAGE AGREES WITH VOLTAGE LISTED ON RATING PLATE  
VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT  
REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS  
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS  
CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS  
CHECK GAS PIPING FOR LEAKS  
CHECK THAT RETURN (INDOOR) AIR FILTERS ARE CLEAN AND IN PLACE  
VERIFY THAT UNIT INSTALLATION IS LEVEL  
CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW  
TIGHTNESS  
j
CHECK TO ENSURE THAT ELECTRICAL WIRING IS NOT IN CONTACT WITH REFRIGERANT LINES  
OR SHARP METAL EDGES  
j CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS  
III. START-UP  
ELECTRICAL  
SUPPLY VOLTAGE  
COMPRESSOR AMPS  
INDOOR-FAN AMPS  
L1-L2  
L1  
L1  
L2-L3  
L2  
L2  
L3-L1  
L3  
L3  
TEMPERATURES  
OUTDOOR-AIR TEMPERATURE  
RETURN-AIR TEMPERATURE  
COOLING SUPPLY AIR  
DB  
DB  
DB  
WB  
WB  
PRESSURES (Cooling Mode)  
REFRIGERANT SUCTION  
PSIG  
PSIG  
F
F
REFRIGERANT DISCHARGE  
j
VERIFY THAT 3-PHASE FAN MOTOR AND BLOWER ARE ROTATING IN CORRECT DIRECTION. IF THEY  
ARE NOT ROTATING IN CORRECT DIRECTION, LOCKING COLLAR MUST BE RE-TIGHTENED AFTER  
CORRECTING DIRECTION OF ROTATION  
j
j
VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION  
VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS  
GENERAL  
j
SET ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO MATCH JOB REQUIREMENTS  
(IF EQUIPPED)  
Printed in U.S.A.  
Edition Date:09/06  
Copyright 2006 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231  
Catalog No:50H-1SI  
Replaces:50HJ--31SI  
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.  
72  

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