HEAT CONTROLLER, INC.
Installation Operation
and Maintenance
Packaged Terminal
AC/Heat Pumps
EKTC/EKTH
M Series
HEAT CONTROLLER, INC.
1900 Wellworth Ave., Jackson, Michigan 49203 • Ph. 517-787-2100 • Fax 517-787-9341 • www.heatcontroller.com
THE QUALITY LEADER IN CONDITIONING AIR
Contents
Unit Features ........................................................................................... 3
General Information ................................................................................ 5
Installation Instructions.......................................................................... 6
Wiring ....................................................................................................... 8
Operating Instructions............................................................................ 9
Obtaining Service.................................................................................. 16
Normal Operating Sounds and Conditions ........................................ 17
Configuration Settings ......................................................................... 17
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
IMPORTANT NOTE TO THE OWNER
This equipment is to be serviced by professionally trained personnel only. If this equipment is improperly installed, adjusted or altered
by an unqualified person, a safety hazard may result.
IMPORTANT NOTE TO THE SERVICER
Read this manual and familiarize yourself with the specific items which must be adhered to before attempting to service this unit. The
precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there is a direct conflict
between existing practices and the content of this manual, the precautions listed here take precedence.
Your warranty certificate is also supplied with the unit. Read the warranty carefully and note what is
covered. Keep the warranty certificate in a safe place, so you can find it, if necessary.
Before using this manual, check the serial plate for proper model identification.
THE INSTALLATION AND SERVICING OF THIS EQUIPMENT MUST BE PERFORMED BY QUALIFIED,
EXPERIENCED TECHNICIANS ONLY.
Due to policy of continual product improvement, the right is reserved to change
specifications and design without notice.
2
Unit Features
This unit has many features which are different than those found on conventional PTAC units. The servicer must be familiar with
these features in order to properly service the unit.
• LCDI or AFCI Power Cords - Underwrites Laboratories and the
National Electric Code (NEC) now require power cords that
sense current leakage and can open the electrical circuit to the
unit on units rated at 250 volts or less. In the event that unit
does not operate, check the reset button located on or near the
head of the power cord as part of the normal troubleshooting
procedure.
• Indication LEDs - The touch pad has LEDs that corre-
spond to fan operation and to indicate unit status. The
LEDs next to the selections OFF, COOL, and HEAT in-
dicate which operational mode is active. The LED lo-
cated in the lower left corner is a status LED. This LED
indicates the status of the unit. See Diagnostic Mainte-
nance & Status Report section for further details.
LCDI power Cord
• Automatic 3-minute compressor lockout - After the compres-
sor cycles off, it will not restart for three minutes.
• Automatic 2nd stage electric heat - If the room temperature
falls to 4°F below the set point temperature, the reverse cycle
heat is shut off and the electric strip heat is turned on.
Status LED
• Automatic freeze protection - Whenever power is supplied to
the unit and the master switch is in the ON position, automatic
freeze protection is active. If the unit senses temperature below
40°F, the fan motor and electric strip heat are turned on. Freeze
protection can be turned off, if required.
Touch Pad
• Load shedding - An LS terminal has been added for
load shedding operations. If at any time a switch is
closed between the LS and IN terminals, the compres-
sor and electric heater will lockout until the switch is
opened.
• Random restart delay - To help eliminate power surges after a
power outage, the unit is equipped with a two to four minute
random restart delay feature. Whenever the unit is plugged in
with the master switch turned on and the mode switch set in the
cool or heat mode, a random restart will occur. A random restart
condition can be avoided by setting the mode switch in the fan
only or off position before applying power to the unit.
• Transfer fan - Terminals TF(-) and TF(+) on the low
voltage terminal board allow for an external (transfer)
fan connection. A user-supplied relay is required and,
depending upon the type used, an approved external
transformer kit may be required for installation.
• Fuse holder - On all 265 volt units, fuse holders are factory in-
stalled. Check for blown fuse if unit does not operate. Fuse
holder is located behind the front. Replacement fuses may be
purchased from the Parts Department or contact your sales rep-
resentative for part numbers.
NOTE: The PTAC Wire Harness Kit (PWHK01C) is required
when using either the transfer fan or load shedding option.
• Front mounting hole - A mounting hole is provided to
give the owner the option of securing the front to the
chassis. The mounting hole is located behind the air
intake grille. The owner must supply one 1/2 inch long
#8 sheet metal screw per unit. The screw must be re-
moved before the front can be removed.
Front Mounting
Hole
FUSE
HOLDERS
Control Panel
Chassis Front
3
Unit Features
• Energy Management System Features
Temperature Setback - This option can save energy dollars
for unrented or unoccupied rooms by automatically setting
back the operational temperatures. This mode of operation
is selected through the configuration routine (see Configu-
ration Settings section). If none of the keys on the control
pad have been pressed for an 18-hour period. The unit will
automatically go into a 3-stage setback routine; after 30
minutes, a 1 degrees setback; after 3 hours, 3 degrees, and
at 8 hours, a 7-degree setback. NOTE: Temperature set-
back does not work with a wired remote thermostat .
Door Switch and Motion Sensor Low Voltage Terminals
(DS1, DS2, MS1, MS2) - The door switch and motion sen-
sor operate as a unit, the door switch terminals allows for
wired connection of a door sensor to the control board. The
motion sensor interprets any door movement as a signal of
occupancy. If the switch between DS1 and DS2 is closed,
the door control will interpret the room door as closed. If
the switch between MS1 and MS2 terminals is opened (or
closed if unit is configured for normally open) the control will
interpret the action as a signal of occupancy. If thirty min-
utes pass without any door activity, Energy Management
Temperature setback activates.
Serial Port Interfaces - Two serial ports located on the con-
trol board provide easy access for two-way communications
to the control board from handheld PDA devices. An op-
tional RF antennae can be attached for wireless communi-
cations.
4
TRANSPORTATION DAMAGE
All units are securely packed in shipping containers tested according to International Safe Transit Association specifications. The
carton must be checked upon arrival for external damage. If damage is found, a written request for inspection by the carrier’s agent
must be made immediately.
In the event of damage, the consignee must:
1. Make notation on delivery receipt of any visible damage to shipment or container.
2. Notify carrier promptly and request an inspection.
3. In case of concealed damage, carrier should be notified as soon as possible—preferably within 5 days.
4. File the claim with the following supporting documents within the 6 month statute of limitations.
a. Original Bill of Lading, certified copy, or indemnity bond.
b. Original paid freight bill or indemnity in lieu thereof.
c. Original invoice or certified copy thereof, showing trade and other discounts or reductions.
d. Copy of the inspection report issued by carrier’s representative at the time damage is reported to the carrier.
The carrier is responsible for making prompt inspection of damage and for a thorough investigation of each claim. The distributor or
manufacturer will not accept claims from dealers for transportation damage.
UNIT ACCESSORIES
This unit is designed for through-the-wall installation in new or existing buildings. To complete the installation of this PTAC, an
insulated wall sleeve and an outdoor grille (either the stamped aluminum grille or the architectural grille) are required.
The chassis and the cabinet front are shipped in one carton.
5
Installation Instructions
To ensure that the unit operates safely and efficiently, it must be installed, operated and maintained according to these installation
and operating instructions and all local codes and ordinances or, in their absence, with the latest edition of the National Electric
Code. The proper installation of this unit is described in the following sections. Following the steps in the order presented should
ensure proper installation.
WARNING
Rear Closure
Panel
TO PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK, YOU MUST:
•
•
ONLY
IN THE
MAKE SURE THE ELECTRICAL ACCESSORIES ARE INSTALLED
PRE-DRILLED MOUNTING HOLES.
Flaps
MAKE SURE THE ELECTRICAL WIRING IS NOT INSTALLED AND DOES NOT
BELOW
HANG
THE PRE-DRILLED MOUNTING HOLES OR LIE IN THE UNIT
BASE PAN.
Stiffener Removal
SLEEVE STIFFENER AND REAR CLOSURE PANEL
REMOVAL
Before the chassis can be installed in the wall sleeve, the sleeve
stiffener and the rear closure panel must be removed.
1. Remove the zigzag folded cardboard sleeve stiffener.
2. Remove the rear closure panel by folding the four flaps.
3. Grasping the top and bottom flanges of the rear closure panel
pull the entire panel out diagonally from one side.
Rear Enclosure Panel Removal
DRAIN KIT INSTALLATION (Optional Accessory)
During normal reverse cycle heating operation, condensate water
will drain out of the rear of the wall sleeve. If this water is
objectionable, a drain kit should be installed. The drain kit has
provisions for draining the water from either the right or left side
of the sleeve externally or from the bottom of the sleeve inter-
nally. The drain kit must be installed before the outdoor grille is
installed. Refer to the Installation Instructions supplied with the
drain kit for a complete description of the installation procedure.
Sleeve
Stiffener
Wall Sleeve with Stiffener
6
Installation Instructions
2. Pull the bottom of the cabinet front away from the chassis until
SLEEVE INSTALLATION
the retaining clips disengage. NOTE: If front is secured with
screws, remove front mounting screw, then follow front re-
moval procedure.
In order for condensate water to drain properly inside the unit, the
sleeve must be installed properly:
• Level from right to left.
• A slight downward pitch from the indoor side to the outdoor
side as shown below.
Refer to the Installation Instructions supplied with the PTAC wall
sleeve for a complete description of the installation procedure.
Level
Inside
Outside
1/4 Bubble
Tilt To
Outside
Wall
Sleeve
Cabinet Front Removal View 2
Front Mounting
Hole
Outside
Wall
Proper Sleeve Tilt
OUTDOOR GRILLE
An outside grille must be installed to direct air flow for proper unit
operation and also protect the outdoor coil. The grille must be
installed before installing the chassis. Refer to the Installation
Instructions supplied with the outdoor grille kit for a complete
description of the installation procedure.
Front Mounting Screw
This model requires either a Stamped Grille Kit (Model SGK--B),
a Polymer Grille Kit (Model PGK) or an Architectural Grille Kit
(Model AGK--B). When replacing an old chassis with an existing
grille or using a specialized grille in a new installation, please
check with your sales representative to determine if the new
chassis should be used with the non-standard specialized grille.
An improper outdoor grille can decrease cooling or heating
capacity, increase energy usage and shorten compressor life and
possibly void the warranty.
3. Lift the cabinet front off the chassis. Reverse this procedure to
reinstall the cabinet front.
CHASSIS INSTALLATION
1. Remove the cabinet front from the chassis as described in
Front Removal.
2. Insert the chassis into the wall sleeve.
Wall Sleeve
Chassis
FRONT REMOVAL
1. Grasp the cabinet front.
Outside
Slide Chassis In
Wall
Chassis Installation View 1
3. Slide the chassis into the wall sleeve until the chassis flanges
contact the front edge of the wall sleeve.
Cabinet Front Removal View 1
7
Installation Instructions
4. Secure the chassis to the wall sleeve using three screws on
Screws
(3 on each
side of unit)
Wall Sleeve
each side of the chassis to ensure a proper seal between the
chassis and the wall sleeve. The screws are supplied in a
plastic bag attached to the power cord.
IMPORTANT NOTES:
1. The unit is equipped with a rubber grommet mounted com-
pressor. These grommets are factory set and require no ad-
justment.
2. If a standard subbase is used, be sure the right hand subbase
cover is removed before the chassis is installed in the sleeve.
3. On 230V,30A units installed with an existing subbase, use the
subbase cover extension kit.
Chassis
Outside
Wall
4. Check the indoor and outdoor grilles for obstructions to air
flow. The unit must be located where curtains, furniture, trees,
or other objects do not block the air flow to and from the unit.
If air is obstructed and/or deflected back into the unit, the air
conditioner compressor may cycle on and off rapidly. This
could damage the compressor or possibly void the warranty.
Chassis Installation View 2
Wiring
WARNING
WARNING
TO AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK, DO NOT SERVICE THIS UNIT WITHOUT FIRST SHUTTING OFF
POWER TO THE UNIT FROM THE CIRCUIT BREAKER AND/OR REMOVING
THE UNIT CORD SET PLUG FROM THE WALL OUTLET.
THIS AIR CONDITIONER IS NOT MEANT TO PROVIDE UNATTENDED COOLING OR
LIFE SUPPORT FOR PERSONS OR ANIMALS WHO ARE UNABLE TO REACT TO
THE FAILURE OF THIS PRODUCT.
THE FAILURE OF AN UNATTENDED AIR CONDITIONER MAY RESULT IN EXTREME
HEAT IN THE CONDITIONED SPACE CAUSING OVERHEATING OR DEATH OF
PERSONS OR ANIMALS.
CAUTION
PRECAUTIONS MUST BE TAKEN TO WARN OFF OR GUARD AGAINST SUCH AN
OCCURRENCE.
TO AVOID PROPERTY DAMAGE, PERSONAL INURY OR DEATH DUE TO
ELECTRICAL SHOCK, DO NOT USE AN EXTENSION CORD WITH THIS UNIT.
PTAC WIRE HARNESS KIT (PWHK01C)
See PTAC Wire Harness Kit Installation Instructions for
proper wire orientation and location for low voltage wiring.
CAUTION
TO AVOID THE RISK OF PROPERTY DAMAGE, PERSONAL INURY OR FIRE,
USE ONLY COPPER CONDUCTORS.
HEATERLESS UNITS
If a heaterless unit is ordered, field provisions must be made for
adding supplemental heat. Refer to the Installation Instructions
supplied with the heater kit for a complete description of the
installation procedures. All 208/230 volt heaterless units are
shipped with a 15 Amp power cord and all heaterless 265 volt
units are shipped with a 20 Amp power cord.
CAUTION
TO AVOID THE RISK OF PERSONAL INURY, WIRING TO THE UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
Cord connection to a wall socket is not permitted for 265-volt
units. All 265-volt units must be hard wired using the hard wire
kit or make use of the plug-in receptacle in the standard subbase.
When adding a heater kit to a heatless unit, the power cord
supplied with the heater kit must be used in place of the power
cord supplied with the unit. Table 1 specifies power cord rating
requirements for the various heater kits.
230/208V and 115V units are equipped with LCDI or AFCI power
cords and can open the electrical circuit to the unit. In the event
the unit does not operate, check the reset button located on or
near the head of the power cord as part of the normal trouble-
shooting procedure.
8
Wiring
VOLTAGE MEASUREMENTS
Power Cord Requirements
230/208 Volt Units 265 Volt Units
Once the unit is properly wired, measure the unit supply voltage.
Voltage must fall within the voltage utilization range given in
Table 2.
Heater Size
(kW)
1.5
Power Cord
Power Cord
Rating (amp)
Rating (amp)
15
20
2.5
15
20
Operating Voltage
3.5
3.7
5.0
20
Not Applicable
30
Not Applicable
Unit Voltage
Rating
230/208
265
Voltage Utilization Range
20
30
Minimum
197
Maximum
253
238
292
Table 1 - Power Cord Requirements
115
103.5
126.5
NOTE: Heaterless units are shipped with an auxiliary data label
on the front side of the mid-partition panel. If an electric heater
kit is field installed, the installer must mark the appropriate box on
the label to indicate the electric heater capacity. If no heater is
installed, the box labeled “None” must be marked. Refer to the
unit nameplate for over current protection data.
Table 2 - Operating Voltage
Operating Instructions
Fan Operation HIGH or LOW with HEAT or COOL mode selected
- The selected fan speed shall run in the selected speed.
USERS CONTROLS
A six button touch key pad located behind the control door
controls both temperature and operation mode. The key pads can
be used alone or in combination.
Fan Operation AUTO with HEAT or COOL mode selected - The
fan will run in low and high speed. The changes in fan speed are
automatic.
THERMOSTAT SETTING
DIAGNOSTIC LIGHT
Pressing the COOL thermostat control and the up or down arrows
will provide a cooler room temperature, respectively. Pressing
the HEAT thermostat control and the up or down arrow keys will
provide a warmer room temperature.
The green diagnostic light located in the lower left hand corner of
the touchpad and indicates operation warnings. This light usually
indicates that either the filter or coils need cleaning. Please refer
to the Maintenance and Cleaning section for the proper cleaning
procedure. If this light is still on after cleaning, please refer to the
Diagnostic & Status Report section for assistance.
LCDI OR AFCI POWER CORD
230/208V and 115V units are equipped with LCDI or AFCI power
cords and can open the electrical circuit to the unit. In the event
the unit does not operate, check the reset button located on or
near the head of the power cord as part of the normal trouble-
shooting procedure.
FAN SPEED
The fan speed touch key will deliver high, low or auto fan speed
to circulate room air. NOTE: The AUTO selection will not be
available if a fan speed is selected without COOL or Heat
selection.
Status LED
User Controls
9
Operating Instructions
SW2
AUXILIARY
REMOTE THERMOSTAT
GL W2 Y/W1
P10
P11
DS1 DS2 MS1 MS2 EH IN LS FD1 FD2 TF- TF+
C
R
B
GH
P13
P12
M1
M2
COM A
COM B
ON/ OFF
MASTER SWITCH
IAT
BLACK
Control Board User Inputs*
*NOTE: The PTAC Wire Harness Kit (PWHK01C) is required for the auxiliary or remote thermostat options.
installation of a front desk switch. The following figure shows a
wiring schematic for connecting the front desk switch to the unit.
ADDITIONAL CONTROL INPUTS
The control inputs shown above provide additional unit control
and features. To access these control inputs, the cabinet front
must be removed (see Front Removal).
If the unit is configured for wired unrented setback energy
management (see Configuration Settings section c2), EH and IN
terminals are used instead of FD1 and FD2. If EH and IN are
shorted, the unit will go into setback temperatures for cooling and
heating as configured in c3 and c4 (see Configuration Settings).
Unit operation will be disabled. “Fd” (see Diagnostic Codes) will
appear on the display. This allows the room to quickly recover to
a comfortable temperature when the room is occupied.
MASTER SWITCH
The master switch disconnects power to all of the system
components. When this switch is in the off position, the compres-
sor, fan motor, reversing valve, and electric resistance heater will
all be de-energized.
Maximum Wire
Length
Wire Size Maximum Length
WARNING
TO PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO
ELECTRIC SHOCK, UNPLUG THE UNIT AT THE WALL OUTLET OR TURN OFF
POWER AT THE FUSE BOX OR CIRCUIT BREAKER BEFORE SERVICING THE
UNIT. LINE VOLTAGE WILL BE PRESENT AT THE CONTROL BOARD, TERMINALS
1 AND 2, WHENEVER POWER IS APPLIED TO THE UNIT REGARDLESS OF
(AWG)
#24
Allowed
400 ft
#22
600 ft
#20
900 ft
L
L
#18
#16
1500 ft
2000 ft
THE MASTER SWITCH POSITION.
Table 3 - Maximum Wire Length for
Front Desk Switch
REMOTE CONTROL INPUTS
The C, R, GL, W2, Y/W1, B/O, and GH terminals provide control
inputs for a “manufacturer-approved” remote wall mounted
thermostat. The “B” terminal can be configured to become “O” if
needed see Configuration Settings For remote control thermostat
operation, refer to the Remote Thermostat Operation section.
AUXILIARY
REMOTE THERMOSTAT
DS1 DS2 MS1 MS2 EH IN LS FD1 FD2 TF- TF+
C
R
GL W2 Y/W1
B
GH
M2
IAT
BLACK
FRONT DESK CONTROL (FD1, FD2, EH, IN)
The FD1, FD2, EH and IN terminals provide control inputs for a
front desk switch. Shorting across the FD1 and FD2 terminals
will disable unit operation. The only control function which will
remain active when these terminals are shorted is freeze protec-
tion. Any switch which will produce a short circuit across these
two terminals can be used as a front desk switch. The contact
resistance of the switch, when closed, must be less than 200
ohms for the front desk feature to operate properly. Table 3
shows the maximum wire length and corresponding gage size for
FRONT
DESK
SWITCH
Front Desk Switch Wiring Schematic
10
Operating Instructions
Vent
Vent
Open
Closed
No holes are permitted
in chassis basepan or
wallsleeve when routing
low voltage wire. Route the
low voltage wires through
the indention on the front
of the basepan.
Vent Door Lever Positions
Hydronic Heat Installations
To avoid the risk of freezing the steam or water coil during
prolonged shut down periods, the vent door must be left closed
when the outdoor temperature might fall below freezing.
Low Voltage Wires Routing
VENT CONTROL
AIR DISCHARGE GRILLE
The vent control allows outside air to be drawn into the condi-
tioned area. This outside air can provide ventilation when the
blower is operating, but it will increase the heating or cooling load
and operating costs.
The discharge grille can be adjusted to expel air at either a 15° or
40° angle.
To obtain access to the vent control:
1. Remove the cabinet front (see Front Removal).
2. Remove the shipping screw (if installed) from the vent door.
15° Discharge
Angle
40° Discharge
Angle
3. Remove the label (if present) from over the vent control lever
on the left side of the chassis. Remove the vent door ship-
ping screw.
Discharge Grille Orientation Options
Label
Use the following procedure to change the angle of the discharge
air flow:
Vent
Control
Lever
1. Remove the front cabinet (see Front Removal).
2. Position the front so that the backside is accessible (see fig-
ure below).
Vent Control
Vent Door Shipping Screw
Vent Control Lever
4. Rotate the vent control lever to either open or close the
damper.
Discharge Air Flow
11
Operating Instructions
3. Remove the four (4) nuts which secure the discharge air grille
to the cabinet front.
• Concealed pipes and chimneys
• Unheated (uncooled) areas behind the thermostat, such as
an outside walls
Consult the instruction sheet packaged with the thermostat for
further details on mounting and operation.
REMOTE THERMOSTAT OPERATION
Approved thermostats vary slightly in construction and, with few
exceptions, are operated similarly. The following operational
description pertains to approved nonprogrammable thermostats
that energize G in Heat and Cool mode.
Discharge Air Flow Grille Removal
HEAT/OFF/COOL Switch
4. Rotate the grille 180° clockwise.
• OFF - cooling and heating functions are defeated.
5. Reinstall the nuts securing the discharge air grille to the cabi-
net front. Reinstall the cabinet front on the unit.
• HEAT - the selected room temperature is maintained by cy-
cling either in the heat pump mode or electric strip heat. A
PTH unit is switched from the heat pump mode to electric
strip heat when the coil temperature is 20°F or when the
heat pump cannot keep up with the heating load and a two
stage thermostat is used.
REMOTE THERMOSTAT
To operate this unit with a “manufacturer-approved” remote
thermostat, configure the control to be operated by the remote
thermostat. Enter configuration mode C1 and then select option
Code L5 (see Configuration Settings in back of manual). When
in the remote mode, the unit will only respond to the thermostat
inputs (terminal strip positions GL (or GH), W2, Y/W1, and B*
shown in “Control Board User Inputs” illustration). NOTE: Once
configuration C1 with option code L5 has been selected, the
control touchpad will no longer accept inputs other than configu-
ration and diagnostics modes. The room occupant must operate
the unit at the remote mounted thermostat.
• COOL - the selected room temperature is maintained by
cycling the air conditioner.
Table 4 summarizes the thermostat input combinations and the
respective unit functions. The following wiring schematic illustra-
tions show wiring schematics for heat pump and straight cool
units with electric resistance heat, respectively.
Heat Pump
Thermostat
Input
Electric Heat
Thermostat
Input
Unit Function
R Terminal to:
R Terminal to:
OFF
NONE
NONE
Stage 1 GL*, Y/W1, B**, O GL* Y/W1, B**, or GL*, W2, O
NOTE: In remote mode, the 3-minute compressor time delay, the
random restart feature and the freeze protection feature are all active
(see Unit Features section).
HEAT
COOL
Stage 2
GL*, W2
n/a
GL*, Y/W1, B**, O
GL*, Y/W1
THERMOSTAT LOCATION
*or GH depending on speed required
**If configured, B and O can be used interchangeably.
This unit is designed to be operated with remote wall mounted
thermostats. For further information on thermostats approved for
use with this unit, contact your sales representative.
Table 4 - Remote Control Inputs
NOTE: The PTAC Wire Harness Kit (PWHK01C) is required for
For best performance results, the thermostat should be located
approximately five feet above the floor on a vibration free, inside
wall in an area with good air circulation.
remote thermostat options.
ADDITIONAL NOTES:
1. For heat pump operation, a room thermostat with a B** (heat-
ing changeover) terminal is required. This will mean that some
“auto changeover” thermostats cannot be used, as many of
them either do not have a B** terminal, or else energize the
B** terminal continuously when in the “auto” position.
Do not install the thermostat where it may be affected by the
following:
• Dead spots behind doors, in corners or under cabinets
• Hot or cold drafts from air ducts
2. Additional wiring should be run for future changeover to Heat
Pump or thermostat options.
• Radiant heat from the sun, appliances, or fireplaces
**If configured, B and O input terminals can be used interchangeably.
12
Operating Instructions
3. Run 6 to 8 wires during initial installation. Tape or cap off any
unused wires.
AUXILIARY
REMOTE THERMOSTAT
DS1 DS2 MS1 MS2 EH IN LS FD1 FD2 TF- TF+
C
R
GL W2 Y/W1
B
GH
Control Board
Connections
Thermostat
Connections
Wiring Schematic for Straight Cool Unit
*NOTE: For high speed fan operation, connect “G” to “GH”.
AUXILIARY
REMOTE THERMOSTAT
DS1 DS2 MS1 MS2 EH IN LS FD1 FD2 TF- TF+
C
R
GL W2 Y/W1
B
GH
Control Board
Connections
Thermostat
Connections
Wiring Schematic for Remote Heat Pump
*NOTE: For high speed fan operation, connect “G” to “GH”.
Table 5 shows the maximum wire length and corresponding gage
size for installation of a remote thermostat.
Maximum Wire
Length
Wire Size Maximum Length
(AWG)
#24
Allowed
400 ft
#22
600 ft
#20
900 ft
#18
#16
1500 ft
2000 ft
Table 5 - Maximum Wire Length for Remote
Control Connection
WARNING
TO PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO
ELECTRIC SHOCK, DISCONNECT THE ELECTRICAL POWER SUPPLY BEFORE
CLEANING THIS UNIT.
**If configured, B and O input terminals can be used interchangeably.
13
Maintenance and Cleaning
WARNING
TO AVOID THE RISK OF PROPERTY DAMAGE, ELECTRICAL SHOCK OR
PERSONAL INJURY, CLEAN AIR FILTERS AND COILS REGULARLY. CLOGGED
OR SEVERLY RESTRICTED FILTERS OR COILS REDUCE AIRFLOW WHICH CAN
CAUSE DRASTIC EFFICIENCY LOSS AS WELL AS SEVERE COMPONENT DAMAGE
TO COMPRESSORS, ELECTRIC HEATER OR FAN MOTOR. IN EXTREME CASES,
CLOGGED FILTERS AND/OR COILS MAY CREATE A FIRE HAZARD AND WILL
VOID THE WARRANTY.
`
WARNING
SOME LOCAL CONDITIONS AND ENVIRONMENTS CAN CAUSE FUNGI AND OTHER
MATERIAL TO GROW INSIDE THE PTAC UNIT. THIS MATERIAL WHEN DRIED,
AS WELL AS OTHER FOREIGN MATERIAL, SIMILAR TO DRYER LINT IN YOUR
CLOTHES DRYER, ARE FIRE HAZARDS. BE SURE TO THOROUGHLY CHECK AND
CLEAN THE UNIT'S COILS, BLOWER WHEEL AND BASEPAN PER THE
INSTRUCTIONS CONTAINED IN THIS MANUAL.
MONTHLY MAINTENANCE AND CLEANING
Intake Filter Removal
Intake Air Filter
To properly maintain the operational performance of your PTAC
Vent Screen
unit, it is extremely important that the inlet air filter be cleaned
once per month or more often if operated in dusty or dirty
locations or conditions. The intake air filter is constructed of
durable polypropylene. The “air intake” air filter can be easily
inserted into the cabinet front using the cabinet filter guides. The
intake air grille swings out for easy access to the filter. Before
cleaning the intake filter, turn the unit off by setting the mode
switch to the OFF position. Filter should be cleaned as required.
Before cleaning the vent screen, disconnect power to the unit by
unplugging the power cord at the wall outlet or subbase, or
disconnect power at the fuse box or circuit breaker. If unit is
operated with vent door closed, the vent screen does not need
to be cleaned.
1. Remove the cabinet front as described in Front Removal.
2. Remove the six screws securing the chassis to the wall
sleeve.
The following procedure is used to remove the intake filter:
1. Open the intake grille by grasping the top intake louver.
2. Pull the intake grille open.
3. Slide the chassis out of the wall sleeve far enough so that the
vent screen is accessible.
3. Slide filter upward and remove.
4. Remove the three screws securing the vent mesh screen to
the partition panel.
4. Clean filter with vacuum or with running water.
Reverse this procedure to reinstall the filter.
5. Clean and replace the vent screen, slide the chassis back into
the wall sleeve, secure it in place with six screws and reinstall
the front cabinet.
NOTE: Available accessory filter kits are FK10B (air intake filter -
10 per pack) and CFK10B
(charcoal filter - 10 per pack). The charcoal filters will greatly
improve the quality of the air by absorbing odors from tobacco
smoke, mold, mildew, etc. Both filters are permanent and
cleanable. Contact your sales person for details.
Vent - (Left Side Unit)
14
Maintenance and Cleaning
Cabinet Front
Basepan and Condenser Coil
The cabinet front and discharge air grille can be cleaned with a
water dampened cloth . Under no circumstances should hydro-
carbon-based cleaners (e.g. acetone, benzene, naphtha gaso-
line, etc.) be used to clean the front or air grilles. Use care when
cleaning the control area.
CAUTION
DO NOT USE COMMERCIAL GRADE COIL CLEANERS. SOME OF THESE
CLEANERS MAY CONTAIN ETHYLENE DIAMINE TETRACETIC ACID (EDTA)
WHICH CAN SHORTEN THE LIFE OF THE CONDENSER COIL.
Before cleaning the basepan and condenser coil, turn OFF unit
mode switch and disconnect power to the unit. To disconnect
power, either unplug the power cord at the wall outlet or subbase,
or disconnect power at the fuse box or circuit breaker.
YEARLY MAINTENANCE AND CLEANING
NOTE: Use a mild biodegradable detergent such as Simple
Green™ when cleaning the unit. Special care must be taken to
protect the unit’s control board and other electrical components
from getting any water on them while cleaning. The use of harsh
or caustic cleaning agents or materials such as bleach or coil
cleaners that are not designed for PTAC products will cause
damage or deterioration of the aluminum fin or coil material and
is not recommended. Care must be taken not to bend the
aluminum fin stock.
1. Create a water-tight seal by tightly covering the entire control
panel area and fan motor with plastic. Creating this seal pre-
vents water from entering the control area or the fan motor
and damaging the unit.
2. Spray condenser coil and basepan down with water. Next
spray a mild biodegradable detergent such as Simple
Green™ onto the condenser coil and basepan. Let set for
five (5) minutes.
3. Rinse condenser coil and basepan with water again. NOTE:
Ensure water pressure is no higher than that of an ordinary
garden hose and the water temperature no higher than 120°F.
Routine Scheduled Maintenance
To achieve continuing top performance and high efficiency,
4. Tilt the non-compressor side of the unit up no higher than 45
degrees and allow water to drain out the other side of the unit.
establish a “once a year” cleaning/inspection schedule for the
unit. Take the unit out of the sleeve and thoroughly clean and
rinse. Be sure to include in the yearly cleaning the evaporator
coils, and condenser coils, basepan, and drain passages.
Scheduled maintenance can be accomplished by either local
maintenance staff or by an authorized servicer. They must follow
the instructions described in this manual.
5. Remove excess water left in the basepan by wiping the
basepan with a dry cloth.
6. Remove the water-tight seal from the motor and control panel
area.
7. Reinstall unit back into wall sleeve.
8. Allow unit to dry for 24 hours before reapplying power. When
power is reapplied test unit for proper operation.
9. Place a non-acidic algaecide in the basepan to inhibit bacteria
growth. Ensure the algaecide is compatible with wet coil op-
eration and is not corrosive to the coil.
Adverse Operating Conditions Maintenance
Units operating in dusty or corrosive locations; i.e. dusty con-
struction site or sea coast, must be cleaned more often. A
minimum of four (4) times a year will maintain proper operational
conditions and protect unit components.
CAUTION
HIGH PRESSURE AND HIGH TEMPERATURE CLEANING IS NOT RECOMMENDED.
DOING SO COULD DAMAGE THE ALUMINUM FIN STOCK AND ELECTRICAL
COMPONENTS.
Wall Sleeve
Clean the wall sleeve while cleaning the unit. The caulking
around the sleeve should be checked to make sure that any
potential air and water openings around the sleeve are properly
sealed. The wall sleeve’s level should also be rechecked.
Proper leveling for most installations are a ¼ bubble tilt to the
outside and level from right to left. Contact your sales person for
detailed maintenance or cleaning instructions.
Clearance Check
Clearances around the unit should also be checked to make sure
that the intake air and discharge air paths have not become
blocked or restricted. A minimum of eight inches clearance is
needed from unit to furniture , beds, or other objects for proper
operation. Restricted discharge or intake air will reduce the unit’s
operational performance. In severe airflow restrictions damage
can occur to unit components such as the compressor, electric
heater or fan motor.
15
Obtaining Service
In the event this unit requires repair or servicing beyond what is covered in this manual, contact an authorized service organization.
To obtain an authorized servicer, contact your sales representative or agency.
Normal Operating Sounds and Conditions
Water trickling sounds
Water is picked up and distributed over the coil. This improves the efficiency and
helps with water removal.
Water dripping
Water will collect in the base pan during high humidity days. This can cause
overflow and drip from the outside of the unit.
Air sounds
The fan cycle switch sets the operational mode of the fan in the ON position. The
fan will run continuously whenever power is applied in this mode. In the AUTO
position, the fan will cycle on and off with the compressor or electric heater.
Starting delay
You may notice a few minutes delay in the starting if you try to restart the unit too soon
after turning it off or if you adjust the thermostat right after the compressor has shut off.
This is due to a built in delay to protect the compressor.
16
Configuration Settings
The control can be configured to operate a wide range of options. The options listed below with the * are the factory default settings.
If these are acceptable, then the unit does not require any additional configuration and is fully operable. To configure the unit, first
select the configuration feature code setting and then an option code to change from the factory default setting.
To enter configuration feature mode:
1. Press and continue to hold the up and down
arrow keys and quickly press the OFF
key twice within a two (2) sec-
ond time frame. The display will alternate between displaying the feature code C1 and the option code 0 (factory default set-
ting). The lower right dot on the display will flash. To enter the other option codes for C1 (rE and L5) press either the up or down
arrow key.
To select a configuration feature code other than C1, press the HEAT
scroll to a previously viewed configuration codes press the COOL
key until the desired configuration comes up. To
key.
Once you have scrolled to the correct feature, then to select the option code for your desired configuration, press either the up or
down key to scroll through the options of the selected feature code.
To exit configuration mode:
1. Press the OFF
key. Configuration feature mode will also exit if no keys are pressed for a period of two (2) minutes.
Below are the most common configuration settings. Additional codes are present and may be accessed within this menu. Contact the
manufacturer for additional information.
Feature
Code
Option
Code
Description
Interface Usage
Description
C1
0*
rE
Unit is onlycontrolled by the touchpad behind the door.
Unit is both controlled by a wireless thermostat
and/or the touchpad behind the door.
Unit is controlled by a wired thermostat onlyvia
on the low voltage terminals.
L5
C2
Fan Operation
Au*
On
The fan only runs with the call for heating or cooling.
The fan runs continuously except in the OFF position.
C4
C5
C6
Room Indentification first two
digits (00 to 99)
Room Identification last two
digits (00 to 99)
00-99
Set first two digits of room identification
00-99
Set last two digits of room identification
"No Occupancy" detection devices
Wired Door Switch and Motion Sensor present
Enter "No Occupancy" routine 18 hours after last control
selection
Occupancy
0*
1
18
C7
Motion Sensor Type
1
Normally Closed Device
Normally Open Device
0*
C8
C9
C0
Cooling Temperature Limiting
Heating Temperature Limiting
Select temperature between 60 and 72 for minimum
cooling set point
Select temperature between 74 and 90 for maximum
heating set point
60-72 (65*)
74-90 (80*)
Reverse Cycle "B" or "O"
selection for thermostat
8*
0
Mating thermostat has a "B" terminal
Mating thermostat has an "O" terminal
Not used
c1
c2
Wired Unrented Set Back
0*
A
Not Active
Active
c3
c4
Unrented Cooling Temperature
Unrented Heating Temperature
Twinned Unit
60-90 (79*) Select temperature between 60 and 90 unrented cooling set point
60-90 (63*) Select temperature between 60 and 90 unrented heating set point
CA
0*
5
Not Twinned
Twinned (Slave)
Cb
Dehumidification
0*
1
Not Active
Active
U
Active in No occupancy / Unrented State
CC
Cd
Dehumidistat call for a drop in temperature
English/Metric Temperature
3-8
F*
C
3-8
Fahrenheit Scale
Celsius Scale
CE
Freeze Protection
1*
0
On
Off
* Indicates factory default.
17
Diagnostic Maintenance & Status Report
The Diagnostic Maintenance & Status Report provides detailed information on PTAC control operation and operational status includ-
ing present modes, failures, airflow restriction warnings, operating temperatures, and past failures. The lower right hand dot on the
center display flashes in this mode. In some cases the green LED located in the lower left hand corner of the touchpad below the OFF
key will also be lit. This Green LED “Status Light“ only illuminates if there is an status code that has been activated and should be
reviewed. In most cases, this light indicates that the indoor room filter is dirty should be cleaned or replaced. NOTE: Dirty filters
cause the unit to consume more energy than normally needed to condition a room. Once the filter has been cleaned or replaced, the
LED should go out. If the LED is still illuminated after the filter has been cleaned, activate the Diagnostic and Status mode to view
any active codes. The unit may need additional cleaning or maintenance of the evaporator or condenser coils. Please perform this
step before calling a servicer. A servicer should be called only if cleaning the filter or coils does not clear the status code or
the code indicates that servicer should be called.
DIAGNOSTIC STATUS REPORT MODE.
To enter Diagnostic Status Report mode, press and hold the up and down
arrows and, while holding, quickly press the
COOL key twice.
ACTIVE FAILURES.
•
If there are no active failures or lockouts, the display will show a double dash, “- -”. If there is a code listed, see the unit “Diag-
nostic Codes” chart for a list of definitions.
OPERATING TEMPERATURES.
• If not in Diagnostic Status Report Mode, enter as instructed above and press the Fan Speed
key.
• If already in Diagnostic Status Report mode, press the Fan Speed
key. The display will show the temperature of the de-
sired set point, SP; the temperature at the wireless thermostat, rL; the indoor ambient temperature behind the filter, IA; the indoor
coil temperature, IC; the indoor discharge air temperature, Id; the outdoor coil temperature, OC; the outdoor ambient tempera-
ture, OA; and the spare probe temperature, IH. If any of the probes are not populated the display will show the corresponding
failure code.
PAST FAILURE LOG
• If not in Diagnostic Status Report Mode, enter as instructed above and press the Fan Speed
key twice.
• If already in Diagnostic Status Report mode, press the Fan Speed
key. While the display is showing operating tempera-
tures, the last 10 failure codes active or past can be requested by pressing the Fan Speed
played last entry first followed subsequently by each preceding code.
key again. The codes are dis-
Note that modes F1 and Fd are also displayed in the normal control operation (see “Diagnostic Codes” chart).
To exit Diagnostic Status Report mode, press the OFF key.
18
Diagnostic Codes
ERROR
DISPLAY
CODE
STATUS
SUGGESTED ACTION
LIGHT
Freeze Protection Engaged. The room temperature
measured by the wireless remote thermostat or indoor
ambient thermistor active sensor falls below 40°F.
No Action required. This setting will disengage when
the room temperature rises above 43°F.
Y
N
FP
M
O
D
E
S
Open front desk switch to allow occupant unit
operation.
Front Desk switch is closed. All outputs are switched off.
Y
Y
N
N
Fd
No action if a wired thermostat is being used.
Otherwise, see Configuration Settings.
Control is configured to respond to a wired thermostat
On
Indoor Ambient Thermistor reads outside the range -20°F to
200°F & the wireless thermostat is not communicating to the
unit control or
Replace black Indoor Ambient Thermistor or
Wireless Remote Thermostat.
Y
Y
F1
Indoor Ambient Thermistor (IAT) without a wireless remote
thermostat reads outside the range -20°F to 200°F.
F
A
I
L
U
R
E
S
Configuration Error
N
Y
N
N
N
Y
Set C1 Configuration Code to 0 or L5.
Replace black Indoor Ambient Thermistor.
Replace Red Indoor Coil Thremistor .
Set C1 Configuration Code to 0 or L5.
F2
F3
F4
Indoor Ambient Thermistor reads outside the range -20°F to
200°F
Indoor Coil Thermistor either above or below operating
tolerances.
Configuration Error
N
N
N
N
Y
Y
Y
N
F5
F6
Fb
br
Indoor Discharge Thermistor either above or below operating
tolerances.
Replace Yellow Indoor
Discharge Thermistor.
Configuration Error
Set C1 Configuration Code to 0 or L5.
Brown Out Protection engaged. Power was lost or voltage is
low.
Check for incoming power at correct voltage.
A
I
R
F
Discharge Air Too Hot.
N
N
Y
Y
Clean Filter or Remove Air Blockage.
Clean Filter or Evaporator Coil.
L6
L8
Air Restriction in Heating.
L
O
W
Air Restriction in Cooling.
N
N
Y
Y
Clean Filter or Evaporator Coil.
L9
Clean Condensor Coils, Check Fan
fault code. Code will reset after cleaning.
Outdoor Coil Thermistor temperature high.
LC
W
A
R
N
I
N
G
S
Clean Indoor Coil / Filter.
Clean Outdoor Coil.
N
N
Y
Y
Check for Blocked Indoor Air.
Check for Blocked Outdoor Air.
C1
C0
19
Design, specifications, performance data and materials subject to change without notice.
1900 Wellworth Ave., Jackson, Michigan 49203 • Ph. 517-787-2100 • Fax 517-787-9341
THE QUALITY LEADER IN CONDITIONING AIR
12/06
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