Outdoor Heat Pump
User’s Information and Installation Instructions
T3BN Series High Efficiency Commercial Split System
These units have been designed and tested for capacity and efficiency in accor-
dancewithA.R.I.Standards.SplitSystemHeatPumpunits,whencombinedwith
our air handlers, offer a high quality, matched heating and cooling system.
These instructions are primarily intended to assist qualified individuals expe-
rienced in the proper installation of heating and/or air conditioning appliances.
Some local codes require licensed installation/service personnel for this type of
equipment. Read all instructions carefully before starting the installation.
Download from Www.Somanuals.com. All Manuals Search And Download.
normal, and the unit will periodically defrost
itself. During the defrost cycle, the outdoor
fanwillstop,andthecompressorwillcontinue
to run and heat the outdoor coil, causing the
snow and ice to melt. After the snow and ice
have melted, some steam may rise from the
outdoor unit as the warm coil causes some
melted frost to evaporate.
TO MAINTAINYOUR HEAT PUMP—
CAUTION:
Be certain the electrical power to
the outdoor unit and the furnace/air
handler is disconnected before
doing the following recommended
maintenance.
TO OPERATEYOUR HEAT PUMP
FOR AUTOMATIC COOLING AND
HEATING—
1. Regularly:
a. Clean or replace the indoor air filter at the
start of each heating and cooling season,
and when an accumulation of dust and
dirt is visible on the air filter. Inspect the
filter monthly.
1. Set the thermostat system switch to AUTO
and the thermostat fan switch to AUTO.(See
Figure 1)
Note: Thermostats will vary. Some models
will not include the AUTO mode, and others
will have the AUTO in place of the HEAT and
COOL, and some will include all three.
b. Remove any leaves and grass clippings
from the coil in the outdoor unit, being
careful not to damage the aluminum
fi n s .
2. Set the thermostat temperature to the
desired heating and cooling temperature
level(s). The outdoor unit and the indoor
blower will then cycle on and off in either
the heating or cooling mode of operation as
requiredtoautomaticallymaintaintheindoor
temperature within the desired limits.
c. Check for any obstruction such as twigs,
sticks, etc.
d. Certain models have external panels
fabricated from a premium grade
of steel designed to inhibit cor-
rosion. For such units, if the unit is
located in a coastal region or other area
subjected to high concentrations of salt,
then the unit should be hosed off after
stormsandmonthlyotherwisetomaintain
its new appearance.
TO SHUT OFFYOUR HEAT
PUMP—
SetthethermostatsystemswitchtoOFFandthe
thermostat fan switch to AUTO. (See Figure 1)
The system will not operate, regardless of the
thermostat temperature selector(s) setting.
CAUTION:
TO OPERATE THE INDOOR
BLOWER CONTINUOUSLY—
Do not over-oil, or oil motors not
factory-equipped with oil tubes. The
compressor is hermetically “sealed”
and does not require lubrication.
Set the thermostat fan switch to ON (See Figure
1).The indoor blower will start immediately, and
will run continually until the fan switch is reset
to AUTO.
2. Before Calling a Service Technician, Be
Certain:
The continuous indoor blower operation can be
obtained with the thermostat system switch set
in any position, including OFF.
a. The unit thermostat is properly set—see
“To OperateYour Heat Pump for Cooling”
and “To Operate Your Heat Pump for
Heating.”
The continuous indoor blower operation is
typically used to circulate the indoor air to
equalize a temperature unbalance due to a sun
load, cooking, or fireplace operation.
b. The unit disconnect fuses are in good
condition, and the electrical power to the
unit is turned on.
3
Download from Www.Somanuals.com. All Manuals Search And Download.
ReadYour Warranty
theinstructionsprovidedwiththeequipmentprior
to performing the installation and operational
checkout of the equipment.
Please read the separate warranty document
completely. It contains valuable information
about your system.
BrazingOperations—Installationofequipment
may require brazing operations. Safety codes
must be complied with. Safety equipment (e.g.;
safety glasses, work gloves, fire extinguisher,
etc.) must be used when performing brazing
operations.
GENERAL INFORMATION
Readthefollowinginstructionscompletelybefore
performing the installation.
Outdoor Unit Section — Each outdoor unit is
shipped with a refrigerant holding charge.
WARNING:
NOTE: DO NOT USE ANY PORTION OF
THE CHARGE FOR PURGING OR LEAK
TESTING.
Ensure all electrical power to the unit
is off prior to installing or servicing the
equipment.Failure to do so may cause
personal injury or death.
Matching indoor coils and air handlers may be
shippedwithasmallholdingchargetopressurize
them to keep out contaminants. To release the
pressure, read the indoor section installation
instructions carefully.
SITE PREPARATION
Unpacking Equipment — Remove the
cardboard carton and User’s Manual from the
equipment. Take care to not damage tubing
connections when removing from the carton.
Liquid and Suction Lines — Fully annealed,
refrigerant grade copper tubing should be used
when installing the system. Refrigerant suction
line tubing should be fully insulated.
Inspect for Damage — Inspect the equipment
for damage prior to installing the equipment at
the job site. Ensure coil fins are straight and, if
necessary, comb fins to remove flattened and
bent fins.
Field Connections for Electrical Power
Supply — All wiring must comply with current
provisions of the “National Electrical Code”
(ANSI/NFPA 70) and with applicable local
codes having jurisdiction. The minimum size of
electrical conductors and circuit protection must
be in compliance with information listed on the
outdoor unit data label.
Preferred Location of the Outdoor Unit at the
Job Site — Conduct a survey of the job site to
determine the optimum location for mounting
the outdoor unit. Overhead obstructions,
poorly ventilated areas, and areas subject to
accumulation of debris should be avoided. The
outdoor unit should be installed no closer than
18 inches from the outside walls of the facility
and in an area free from overhead obstructions
to ensure unrestricted airflow through the
outdoor unit.
SAFETY CONSIDERATIONS
Pressures within the System — Split
system heat pump equipment contains liquid
and gaseous refrigerant under pressure.
Installation and servicing of this equipment
should be accomplished by qualified, trained
personnel thoroughly familiar with this type of
equipment. Under no circumstances should the
Homeowner attempt to install and/or service
the equipment.
Facility Prerequisites — Electrical power
supplied must be adequate for proper operation
oftheequipment.Thesystemmustbewiredand
provided with circuit protection in accordance
with local building codes and the National
Electrical Code.
Labels, Tags, Precautions — When working
with this equipment, follow all precautions in the
literature, on tags, and on labels provided with
theequipment.Readandthoroughlyunderstand
4
Download from Www.Somanuals.com. All Manuals Search And Download.
The maximum recommended interconnecting
refrigerant line length is 75 feet, and the
vertical elevation difference between the indoor
and outdoor sections should not exceed 20
feet. Consult long line application guide for
installations in excess of these limits.
INSTALLING THE OUTDOOR UNIT
SlabMount—Thesiteselectedforaslabmount
installation requires a stable foundation and one
not subject to erosion. The slab should be level
and anchored (if necessary) prior to placing the
equipment on the slab.
Filter Dryer Installation — A filter dryer is
provided with the unit and installed inside the
outdoor unit.
Cantilever Mount — The cantilever mount
should be designed with adequate safety factor
to support the weight of the equipment, and for
loads subjected to the mount during operation.
Installed equipment should be adequately
secured to the cantilever mount and levelled
prior to operation of the equipment.
Optional Equipment — Optional equipment
(e.g.: liquid line solenoid valves, etc.) should
be installed in strict accordance with the
manufacturer’s installation instructions.
Roof Mount —The method of mounting should
bedesignedsoasnottooverloadroofstructures
nor transmit noise to the interior of the structure.
Refrigerant and electrical line should be routed
through suitably waterproofed openings to
prevent water leaking into the structure.
ELECTRICAL CONNECTIONS
WARNING:
Turnoffallelectricalpoweratthemain
circuit box before wiring electrical
power to the outdoor unit. Failure to
comply may cause severe personnel
injury or death.
INSTALLING THE INDOOR UNIT
The indoor section should be installed before
proceeding with routing of refrigerant piping.
ConsulttheInstallationInstructionsoftheindoor
unit (i.e.: air handler, furnace, etc.) for details
regarding installation.
Wiring Diagram/Schematic — A wiring
diagram/schematicislocatedontheinsidecover
of the electrical box of the outdoor unit. The
installer should become familiar with the wiring
diagram/schematicbeforemakinganyelectrical
connections to the outdoor unit.
CONNECTING REFRIGERANT
TUBING BETWEEN THE INDOOR
AND OUTDOOR UNIT
General — Once outdoor and indoor unit
placementhasbeendetermined,routerefrigerant
tubingbetweentheequipmentinaccordancewith
sound installation practices. Refrigerant tubing
should be routed in a manner that minimizes the
length of tubing and the number of bends in the
tubing. Refrigerant tubing should be supported
in a manner that the tubing will not vibrate or
abrade during system operation.Tubing should
bekeptcleanofforeigndebrisduringinstallation
and installation of a liquid line filter drier is
recommended if cleanliness or adequacy of
systemevacuationisunknownorcompromised.
Every effort should be made by the installer
to ensure that the field installed, refrigerant
containingcomponentsofthesystemhavebeen
installed in accordance with these instructions
and sound installation practices so as to insure
reliable system operation and longevity.
Outdoor Unit Connections — The outdoor
unit requires both power and control circuit
electrical connections. Refer to the unit wiring
diagram/schematicforidentificationandlocation
of outdoor unit field wiring interfaces.
Control Circuit Wiring — The outdoor unit is
designedtooperatefroma24VACClassIIcontrol
circuit. Control circuit wiring must comply with
the current provisions of the “National Electrical
Code”(ANSI/NFPA70)andwithapplicablelocal
codes having jurisdiction.
Thermostat connections should be made in
accordance with the instructions supplied with
thethermostat,andwiththeinstructionssupplied
with the indoor equipment.A typical commercial
installation with a heat pump thermostat and air
handler are shown on the next page.
5
Download from Www.Somanuals.com. All Manuals Search And Download.
Electrical Power Wiring — Electrical power
wiring must comply with the current provisions
of the “National Electrical Code” (ANSI/NFPA
70) and with applicable local codes having
jurisdiction. Use of rain tight conduit is
recommended. Electrical conductors shall have
minimumcircuitampacityincompliancewiththe
outdoorunitratinglabel.Thefacilityshallemploy
electrical circuit protection at a current rating no
greater than that indicated on the outdoor unit
rating label. Refer to the unit wiring diagram for
connection details.
Optional Equipment (e.g.: liquid line solenoid
valves,refrigerantcompressorcrankcaseheater,
etc.)shouldbeinstalledinstrictaccordancewith
the manufacturer’s installation instructions.
STARTUP AND CHECKOUT
WARNING:
Ensure electrical power to the unit is
off prior to performing the following
steps. Failure to do so may cause
personal injury or death.
Minimum Circuit Ampacity — Electrical wiring
to the equipment must be compatible and in
compliance with the minimum circuit ampacity
listed on the outdoor unit data label.
Air Filters — Ensure air filters are clean and in
MaximumFuse/CircuitBreakerSize—Circuit
protectionfortheoutdoorunitmustbecompatible
withthemaximumfuse/circuitbreakersizelisted
on the outdoor unit data label.
place prior to operating the equipment.
Thermostat—Settheroomthermostatfunction
switchtoOFF,fanswitchtoAUTO,andadjustthe
temperature setpoint to its highest setting.
DisconnectSwitch—Anelectricallycompatible
disconnect switch must be within line of sight of
the outdoor unit.This switch shall be capable of
electrically de-energizing the outdoor unit.
Prior to applying electrical power to the outdoor
unit, ensure that the unit has been properly and
securely grounded, and that power supply
connections have been made at both the facility
power interface and outdoor unit.
Optional Equipment — Optional equipment
requiring connection to the power or control
circuits must be wired in strict accordance with
current provisions of the “National Electrical
Code” (ANSI/NFPA 70), with applicable local
codes having jurisdiction, and the installation
instructions provided with the equipment.
Outdoor Unit — Ensure the outdoor coil and
top of the unit are free from obstructions and
debris, and all equipment access/control panels
are in place.
Using extreme caution, apply power to the unit
and inspect the wiring for evidence of open,
shorted, and/or improperly wired circuits.
COPPER WIRE SIZE — AWG
(1% Voltage Drop)
Functional Checkout:
Supply Wire Length-Feet Supply Circuit
200
6
150
8
100
10
8
50
14
12
10
10
8
Ampacity
15
CAUTION:
4
6
20
If equipped with a compressor
crankcase heater, wait 24 hours prior
to performing a function checkout to
allow for heating of the compressor
crankcase. Failure to comply may
result in damage and could cause
premature failure of the system.
4
6
8
25
4
4
6
30
3
4
6
35
3
4
6
8
40
2
3
4
6
45
2
3
4
6
50
Wire Size based on N.E.C. for 60° type copper
conductors.
6
Download from Www.Somanuals.com. All Manuals Search And Download.
Thermostat
G
R W C E O Y
2
NOTE: Jumper
betweenW2 and E is
required when no OD
T-Stat is used.
C & W2 to be connected
to Electric Heat.
R
Y
R
Y
O
O
W
1
W
C
2
W
2
C
G
Air Handler
Heat Pump OD
Section
Typical Heat Pump with Standard Air Handler
7
Download from Www.Somanuals.com. All Manuals Search And Download.
Indoor Blower — Set the thermostat function
switch to COOLING and the fan switch to ON.
Verify that the indoor blower is operating and
that airflow is not restricted. Set the fan switch
back to AUTO.
indoor blower have energized.Feel the air being
circulated by the indoor blower and verify that
it is warmer than ambient temperature. Listen
for any unusual noises. If present, locate and
determine the source of the noise and correct
as necessary.
Low-PressureSwitch—Alow-pressureswitch
is factory-installed (see attached). This switch
is located in the suction line internal to the out-
door unit. The switch is designed to protect the
compressor from a loss of charge.Under normal
conditions, the switch is closed. If the suction
pressure falls below 5 psig, then the switch will
open and de-energize the outdoor unit. The
switchwillcloseagainoncethesuctionpressure
increases above 20 psig. Please note that the
switchinterruptsthethermostatinputstotheunit.
Thus, when the switch opens and then closes,
therewillbea5minuteshortcyclingdelaybefore
the outdoor unit will energize.
NOTE: Other sources for heating (i.e.: electric
furnace, fossil fuel furnace, air handler with
electric heat options, etc.) that interface with
the unit should be functionally checked to verify
system operation and compatibility. Refer to the
installation instructions for this equipment and
perform a functional checkout in accordance
with the manufacturer’s instructions.
Defrost CycleTimer — The defrost cycle timer
controls the accumulated run time interval of
the hot gas defrost after the defrost sensor
closes. It is located in the upper right corner of
the defrost control board.Three interval settings
are available: 30 minutes, 60 minutes, and 90
minutes.Time setting selection is dependent on
the climate where the unit is being installed.The
defaultdefrostcycletimerissetto30minutes.To
adjust the cycle time, move the jumper to cover
the two pins directly adjacent to the desired
cycle time.
Cooling — Gradually lower the thermostat
temperature setpoint below the actual room
temperature and observe that the outdoor unit
and indoor blower energize. Feel the air being
circulated by the indoor blower and verify that
it is cooler than ambient temperature. Listen
for any unusual noises. If present, locate and
determine the source of the noise and correct
as necessary.
Example 1. Dry climate of Southern
Arizona. A 90 minute setting is
recommended.
Short Cycle Protection — With the system
operating in COOLING mode, note the setpoint
temperature setting of the thermostat, and
gradually raise the setpoint temperature until
the outdoor unit and indoor blower de-energize.
Immediately lower the setpoint temperature of
the thermostat to its original setting and verify
that the indoor blower is energized and that the
outdoor unit remains de-energized. Verify that,
after approximately 5 minutes, the outdoor unit
energizes and that the temperature of the air
supplied to the facility is cooler than ambient
temperature.
Example 2. Moist climate of Seattle,
Washington. A 30 minute setting is
recommended.
High-Pressure Switch — A high-pressure
switchisfactory-installedandlocatedintheliquid
line internal to the outdoor unit. The switch is
designed to protect the system when very high
pressures occur during abnormal conditions.
Under normal conditions, the switch is closed.
If the liquid pressure rises above 425 psig, then
theswitchwillopenandde-energizetheoutdoor
unit. The switch will close again once the liquid
pressure decreases to 350 psig.Thus, when the
switch opens and then closes, there will be a 5
minute short cycling delay before the outdoor
unit will energize.
Heating — Lower the thermostat setpoint
temperature to the lowest obtainable setting and
set the thermostat function switch to HEATING.
The indoor blower and outdoor unit should stop
running.Afteraminimumoffiveminutes,increase
the setpoint temperature of the thermostat to the
maximumsetting.Verifythattheoutdoorunitand
DEFROST CONTROL BOARD OPERATION
AND TESTING
1. Terminals “R”-”C” must have 24 V present
between them in order for the time delay and
defrost sequences to be operational.
8
Download from Www.Somanuals.com. All Manuals Search And Download.
2. Jumper the “T2”-”DFT” test pins. This will
indicate to the board that the defrost T-stat
is closed(if the compressor is running).
Defrost T-stat is closed at 32° or below and
is open at 68° or above. But it’s state is
unknown if the temperature is between 32°F
and 68°F. The defrost thermostat tells the
board whether a defrost cycle needs to be
started or terminated. With the DFT closed
the unit will run for 30/60/90 minutes in heat
mode and then defrost the outdoor coil. The
defrostwillturnofftheoutdoorfan,turnonthe
compressorandraisethecoiltemperatureto
68°F. This will open the DFT and terminate
the defrost. If the DFT does not open the
defrost will end after 10 minutes.
Speed up changes:
Manually initiating a defrost will cause the
compressortoruncontinuallywhenentering
defrost.
Normal defrost operation:
To test normal defrost operation when the
temperature is above 35°F, jumper “R” to
“DFT”onthe624656boardandallowtheunit
to run for 30 minutes. Defrost will continue
until the “R” to “DFT” jumper is removed or
for 10 minutes. Remove the jumper.
The5minutetimedelayfeaturecanbeshortened
1 time to 1 second by jumping the “Test” to “C”
terminal. Remove the jumper and repeat as
desired.
3. Defrost board speed-up. With compressor
running in heat mode, next jump the “Test”
pin to “C” on terminal strip. This will initiate
a defrost test in 5, 10 or 15 seconds (This
is determined by the 30, 60 or 90 minute
defrost pin settings. The factory setting will
be30minutes). Notethatthiswillbypassthe
compressoroffdelaywhentheunitgoesinto
defrosttestandifleftindefrosttest,thedelay
will be bypassed when the test is terminated
by the processor. If the jumper is removed
before the test is over the processor will
perform the remainder of a normal defrost.
See step 2 above.
Note: If jumper is left on the “Test” to “common”
pins permanently, the defrost cycle will become
inoperable.
Defrost Test Procedure for 624656
1. Jumper “T2” to “DFT” at the test terminals.
2. With unit running in heat mode, short the
“TEST”terminaltothecommonterminalnear
it. This will speed up the board and cause
it to enter defrost mode in 5/10/15 seconds
depending on the defrost time selection.
Compressor delay will not function during
speed-up.
3. This test will end in 5 seconds if the “TEST”-
common short is not removed.
4. Remove both the short and the“T2”to“DFT”
jumper to terminate the defrost cycle. The
30secondcompressordelayshouldoperate
normally.
4. Remove the jumpers.
Note: The delay/no-delay pin concerns
compressoroperationduringdefrosts.Thedefault
setting is delay. Reciprocating compressors
should only use this setting in conjunction with
an approved hard start kit. Scroll compressors
thathavenoiseissueswhilegoingintoorcoming
out of defrost should use this 30 second delay to
reducethedefrostnoise.Toswitchfromno-delay
to delay remove the pin from the “no-delay” pin
location and shift it to the “delay” pin location.
5. Test is complete, reset thermostat to home
owner preference.
9
Download from Www.Somanuals.com. All Manuals Search And Download.
Refrigerant Charging Charts
( e p s i g ) e r s s u r
L
10
Download from Www.Somanuals.com. All Manuals Search And Download.
Refrigerant Charging Charts
( e p s i g ) e r s s u r
L
11
Download from Www.Somanuals.com. All Manuals Search And Download.
REFRIGERANT CHARGING CHART
Heating Mode of Operation
12
Download from Www.Somanuals.com. All Manuals Search And Download.
C K B L A
W H I T E
C K B L A
O R A N G E
C C H
C K B L A
13
Download from Www.Somanuals.com. All Manuals Search And Download.
PHYSICAL AND ELECTRICAL SPECIFICATIONS / OUTDOOR UNITS
10.1 EER —High Efficiency — Three Phase
Model No.T3BN-
090C
090W
120C
120W
280/230-3-60 460-3-60 280/230-3-60 460-3-60
Volts-Phase-Hz
380/420-3-50
414-506
380/420-3-50
414-506
Voltage Range (Min-Max)
Total Amps
187-253
32.1
187-253
33.4
16.4
21.7
17.2
22.7
Electrical Data
Min Circuit Ampacity
41.4
43
Delay Fuse Max. (1)
60
35
70
35
Wire Size/Max Length (AWG 60°C Cu)
Wire Size/Max Length (AWG 75°C Cu)
Area (ft^2)
4/100
6/100
31.94
2-16
8/100
8/100
31.94
2-16
4/100
4/100
31.94
2-18
8/100
8/100
31.94
2-18
Coil
Rows-FPI
Tube Dia.
3/8” OD
3/8” OD
3/8” OD
3/8” OD
280/230-3-60 460-3-60 280/230-3-60 460-3-60
Volts-Phase-Hz
380/420-3-50
1
380/420-3-50
1
Qty
Horsepower
1
3/4
1
3/4
Fan Motor
Fan Blade
3/4
1.7
3/4
1.7
Full Load Amps
Dia./Pitch/#Blades
RPM/CFM (Max-Total)
Volts-Phase-Hz
Qty./Type
3.3
3.3
Component Data
30/19/3
825/7500
30/19/3
825/7500
30/26/3
825/8500
30/26/3
825/8500
280/230-3-60 460-3-60 280/230-3-60 460-3-60
1 / Scroll
28.8
1 / Scroll
14.7
1 / Scroll
30.1
1 / Scroll
15.5
RLA
Compressor
Data
LRA
195
95
225
114
Stages/Percent
Crankcase Heater Qty./Type
0 - 15 ft.
1 / 100
1 / Band
1 1/8”
1 3/8” (3)
1 3/8” (3)
56
1 / 100
1 / Band
1 1/8”
1 3/8” (3)
1 3/8” (3)
56
1 / 100
1 / Band
1 1/8”
1 3/8” (3)
1 3/8” (3)
90
1 / 100
1 / Band
1 1/8”
1 3/8” (3)
1 3/8” (3)
90
Refrigerant Suction Line-Length/O.D.
16 - 25 ft
(Liq. Line All Lengths - 5/8” O.D.)
Circuits (Qty) - 1
26 - 75 ft.
Holding Charge
Refrigerant Charge
R-22 Ounces
Weight
Total System with 15’ Line Set (2)
374
374
486
486
Net
413
413
423
423
Approximate (lbs.)
Ship
425
425
435
435
(1) HACR Type Circuit Breakers may be used.
(2) Add 9.0 oz. of refrigerant per 5 feet of additional line set.
(3) Requires a 1-3/8” to 1-1/8” reducer line to unit.
COPPER WIRE SIZE — AWG
(1% Voltage Drop)
ACCESSORIES —
Condensing Unit
Supply Wire Length-Feet
Supply Circuit
Ampacity
200
6
4
4
4
3
3
2
2
150
8
6
6
4
4
4
3
3
100
10
8
8
6
6
6
4
4
50
14
12
10
10
8
8
6
6
6
15
20
25
30
35
40
45
50
55
60
Low Ambient Kit 913549A- Maintains system
pressures during low ambient conditions.
2
1
3
2
4
3
4
14
Download from Www.Somanuals.com. All Manuals Search And Download.
15
Download from Www.Somanuals.com. All Manuals Search And Download.
INSTALLER:
PLEASE LEAVE THESE
INSTALLATION INSTRUCTIONS
WITH THE HOMEOWNER
708538A (replaces 7085380)
¢708538G¤
Specifications and illustrations subject
to change without notice and without
incurring obligations.
708538A
Printed in U.S.A. (08/08)
Download from Www.Somanuals.com. All Manuals Search And Download.
|