GENUINE COMFORT GCDM09KAC2035HTUS5 Service manual

PACKAGED TERMINAL
AIR CONDITIONER/HEAT PUMP
INSTALLATION INSTRUCTIONS & OWNER'S MANUAL
As a professional installer you have an obligation to know the product better than the customer. This includes all safety
precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with this installation manual. Pay special attention to all safety
warnings.
Often during installation or repair it is possible to place yourself in a position which is more hazardous than when the unit is
in operation.
Remember it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer in
its safe use.
Safety is a matter of common sense, a matter of thinking before acting. Most dealers have a list of specific good safety
practices, follow them.
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.
ATTENTION INSTALLING PERSONNEL
MODELS
GCDM09KAC2035HTUS5
GCDM12KCD3045HTUS5
GCDM15KCD3045HTUS5
GCDM09KAC2035CTUS5
GCDM12KCD3045CTUS5
GCDM15KCD3045CTUS5
GCDM09KAC2035HTUD5
GCDM12KCD3045HTUD5
GCDM15KCD3045HTUD5
GCDM09KAC2035CTUD5
GCDM12KCD3045CTUD5
GCDM15KCD3045CTUD5

CONTENTS
1 UNIT FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 PREPARING FOR THE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 INSTALLATION INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 FINAL INSPECTION AND START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 OPERATING INSTRUCTIONS.................................11
7 VENTILATION CONTROL....................................13
8 MAINTENANCE AND CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
9 NORMAL OPERATING SOUNDS AND CONDITIONS . . . . . . . . . . . . . . 16
10 TROUBLE SHOOTING .....................................17
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TO THE INSTALLER
Retain this manual for future reference. For further assistance please call 1-866-233-4022.
Before leaving the premises, review this manual to be sure the unit has been installed correctly and run the unit for one
complete cycle to make sure it functions properly. To obtain technical service or warranty assistance during or after the
installation of this unit, contact your local representative.
When calling for assistance, please have the following information ready:
1. Model number
2. Serial number
3. Date of installation
NOTICE: Due to ongoing product development, product designs and specifications may change without notice.
Please contact Genuine Comfort for more information.
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IMPORTANT NOTES:
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.
IMPORTANT NOTE TO THE OWNER
This manual is to be used by qualified, professionally trained HVAC technicians only. The manufacturer does not
assume any responsibility for property damage or personal injury for improper service procedures or services
performed by an unqualified Person.
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.
THE FOLLOWING WARNINGS ARE VERY IMPORTANT FOR SAFETY. PLEASE READ
THEM CAREFULLY BEFORE INSTALLATION!
1. The air conditioner must be installed by certificated installer. It's forbidden to install by those amateurs.
2. Please check whether there is grounding wire in the power supply system before installation. If not, installers
should refuse installing and explain the safety principle to users.
3. To avoid electric shock or even death, the socket or terminal blocks for power supply to the air
conditioner(include 277V, 115V and 208~230V series and all the units that have LCDI power cord) must
connect a Ground Fault Circuit Interrupter.
4.During installation, the wire connection must strictly follow the rule which is zero line and fire line of unit
should be connected to the zero line and fire line in the power system. The connection in reverse is forbidden.
Please be sure the ground wire is firmly connected otherwise it is possible to result in the electrical shock or
death.
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION
WARNING
THE MANUFACTURER WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY, DAMAGE ARISING FROM IMPROPER SERVICE OR
SERVICE PROCEDURES. IF YOU INSTALL OR PERFORM SERVICE ON THIS UNIT, YOU ASSUME RESPONSIBILITY FOR ANY PERSONAL
INJURY OR PROPERTY DAMAGE WHICH MAY RESULT, MANY JURISDICTIONS REQUIRE A LICENSE TO INSTALL OR SERVICE HEATING AND
AIR CONDITIONING EQUIPMENT.
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE
TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
THIS APPLIANCE IS NOT INTENDED FOR USE BY PERSONS (INCLUDING CHILDREN) WITH REDUCED PHYSICAL, SENSORY OR MENTAL
CAPABILITIES, OR LACK OF EXPERIENCE AND KNOWLEDGE, UNLESS THEY HAVE BEEN GIVEN SUPERVISION OR INSTRUCTION
CONCERNING USE OF THE APPLIANCE BY A PERSON RESPONSIBLE FOR THEIR SAFETY.
WARNING
CHILDREN SHOULD BE SUPERVISED TO ENSURE THAT THEY DO NOT PLAY WITH THE APPLIANCE.

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 handle the unit .
• LCDI Cords-Underwriters Laboratories and the National Electric Code (NEC) now require power cords that sense
current leakage and can open the electrical circuit to the unit 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.
• Automatic 3-minute compressor lockout-After the compressor cycles off, it will not restart for three
minutes.
• 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.
• Indication LEDs-The control panel has LEDs that correspond to fan operation and to indicate unit status.
The LEDs next to the selections ON/OFF, FAN, COOL, and HEAT indicate which operational mode is active.
• Failure Tolerance-If the unit is in protection mode less than 4 times in one hour, the accumulation times will
reset to avoid system failure. Only when the unit enters protection mode more than 4 times in one hour, the
system will fail to restart automatically and need manual restart.
• Standard Physical Dimensions-The series PTAC is with the same dimensions 32" wide x 16-1/2" high x
18-3/10" deep
Replacement of older units is made easy.
• Weather-Protected Electrical Components-Vital electrical components are protected from the weather by
locating them on the indoor side of the weather barrier.
• Highly Featured Microprocessor Controls-Microprocessor controls are programmed to interface with the
temperature sensors to maximize comfort conditions for the room occupant and provide outstanding features.
Thermistors are used to sense small changes in temperature to give excellent room control and allow the
microprocessor to monitor and react to changing conditions.
• Automatic Emergency Heat on Heat Pump Units-Automatically uses electric resistance heat if the heat
pump fails .
• High-Temperature Heat Pump Operation Protection -Automatically protects the compressor if heat pump is
operated with high indoor coil temperatures. Power to the outdoor fan and the compressor are turned off if the indoor
coil gets too hot during heat pump operation to prevent damage to the compressor.
• Fan Motors Permanently Lubricated-All units have two fan motors for quiet operation and maximum operating
efficiency. Motors are permanently lubricated to reduce maintenance and totally enclosed to keep dirt and water out of
the motor windings.
• Indoor Fan Speed Selections LOW /HIGH-Unit may be operated in low fan speed or high fan speed. But not all
types will configure these two kinds of fan speeds at once.
• Air duct motor-used for models with air duct.
• Rotary Compressor -Smoother operation for quiet, dependable service and high efficiency.
• Indoor Coil Frost Control-Prevents indoor coil from freezing. Frost can form on the indoor coil when the unit is
operated in cooling when the outdoor temperature is low. The unit automatically shuts the compressor off until
the indoor coil temperature warms to the point where frosting will no longer occur. Then restart the compressor.
• FD Control (front-desk control)-The unit can be turned ON/OFF by front desk control switch. The control wire,
colored purple ,locates in the wall mounted thermostat interface (refer to Fig.3-6 on page 7).
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Fig.1-1 LCDI power Cord
The control logic as below:
1.Turn ON unit: connect R to FD.
2.Turn OFF unit: disconnect R to FD.
1 UNIT FEATURES

Safety Precautions
1.This unit should be installed by a factory certified technician or a licensed mechanical contractor to
ensure proper operation and avoid any safety hazards.
2.Power supply wires must be located in areas where they will not be damaged or cut.
3.Never insert any type of object into the machine inside. Because the fan rotates at a high speed, this
may cause injury.
4.Disconnect the power supply from socket-outlet when the machine units are not in use.
5.Disconnect all electric power supplies before servicing.
6.Any type of repairs or maintenance done to the units must be done by a professionally licensed
contractor. Any unqualified person should not attempt to repair the units themselves.
7.WARNING: RISK OF ELECTRIC SHOCK: CAN CAUSE INJURY OR DEATH.
8.Be sure that the unit is free and clear of any debris around the outside of the unit. Do not place or lean
any items on the unit.
WARNING
Moving parts can cause personal injury. Avoid contact with moving parts when testing or servicing
the unit.
Electrical supply
●Each unit must have a separate branch circuit protected by a fuse or breaker. Refer to the unit
rating plate for the proper wire and breaker or fuse size.
●Use of extension cords is prohibited.
●DO NOT connect the GENUINE COMFORT unit to a circuit with an incorrectly sized overcurrent
protection device.
Electrical short hazard
Before opening the existing unit:
●Open the power supply disconnect switch. Secure it in an open position during installation. Attach
a sign stating," DO NOT TURN ON".
●On a plug and receptacle connection, unplug the existing unit at the wall outlet.
●DO NOT plug in the new unit until installation is complete and the start-up check list has been
completed. Failure to comply with the above could result in severe personal injury, death or
substantial property damage.
Remove the old chassis
1.Disconnect power or unplug cord before proceeding.
2.Remove the front panel to expose the old chassis.
3.Loosen any tie- down bolts or screws and remove the old chassis.
Check existing wall sleeve
Genuine Comfort replacement PTAC's are to be used with a metal wall sleeve:
a)Clean the wall sleeve of any dirt.
b)Repair any damage or rust.
c)Ensure proper drainage of condensate or rainwater to exterior of building.
d)Check the back of sleeve is pitched to the outside ¼ bubble on level.
e)Check the sleeve is leveled left to right.
f)Make sure the wall sleeve is secured in the wall.
Check existing outdoor louver
●Check whether the type of the outdoor louver match the baffle and insulation on the chassis, adjust
if it doesn't match.
●Remove any obstructions.
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2 PREPARING FOR THE INSTALLATION

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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.
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.
High Voltage
Disconnect all power before servicing or installing this unit. Multiple power sources may be present.
Failure to do so may cause property damage, personal injury or death.
WARNING
WALL SLEEVE ASSEMBLY
Welded integrated wall sleeve is featured by artistic appearance and stable structure. Customers can purchase
together with unit. The installation diagram is as follows.
1-3/5"6-3/10"
3-1/2"
1-1/2"32"
18-3/10"
16-1/2"
NO.1
sleeve dimensions
depth
height width
18-3/10"16-1/2" 32"
3 INSTALLATION INSTRUCTIONS
Front grille
Wall sleeve
Outdoor grille
Unit
Sponge
Fig.3-1
Fig.3-2
Tab.3-1

●Please note that only ducted models can be used in ducted applications and the non-ducted models cannot be
used.
●The unit will correctly line up with the duct knock out on the sleeve with the auxiliary duct fan.
Foam
REPLACE THE FOAM(If necessary)
●Remove old foam (if any) that is at the bottom near the back of the existing wall sleeve. All other foam within the
sleeve should be left installed.
●Replace the removed foam with the white foam provided with the unit. The foam's dimensions are 30-7/10″*1″*1/2″
SPONGE
The function of the sponge is to prevent condensation water on the surface of the metal plate due to temperature
differences. When installing the machine, paste it in the corresponding position.
Sponge
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CHASSIS INSTALLATION
1.Check the seal foam on the rear of chassis, make sure to avoid ventilation recirculation.
2.Slide the chassis into the sleeve tight to the end of the sleeve.
3.Secure the chassis —tighten any tie down bolts or screws if necessary.
FILTER INSTALLATION
●Filter is installed inside cover near the bottom. It rests on the metal that protrudes around the bottom of the over.
●Make note to have the angled corner near the power cord. This small section is for the power cord to exit the unit.
●Once the filter is in place, the cover can now be installed.
3 INSTALLATION INSTRUCTIONS
Fig.3-3
Fig.3-4
Fig.3-5

Fan CYC. For Cooling
Anti-cold air
Heat Pump
Electric Heat
Heating priority(Only available for panel control)
Room Freeze Protection
Electric Memory
Electric heater logic
2345678
ON
OFF
1
Function
ON-Enable ; OFF-Disable ;
ON-Enable ; OFF-Disable ;
ON-Enable ; OFF-Disable ;
ON-Heat Pump Prior; OFF-Electric Heat Prior;
(Only available for panel control)
ON-Allows the unit to ensure the indoor room temperature does not
fall below 40℉ even when turned off;OFF-disable freeze protection.
ON-enable ; OFF-disable ;
ON-enable ; OFF-disable ;
ON- for 9K ; Electric heater logic
OFF- for 12K/15K ;Electric heater logic
Switch
#1
#2
#3
#4
#5
#6
#7
#8
Description
Anti-cold air
Heat Pump
Electric Heat
Heating priority
Room Freeze Protection
Electric Memory
Fan CYC. For Cooling
Electric heater logic
Factary Setting
OFF
HP : ON
AC : OFF
ON
OFF
9K:ON
12K/15K:OFF
DIP Switch
Special Control Functions for DIP Switches
With E-HEAT : ON
Without E-HEAT : OFF
HP : ON
AC : OFF
HP : ON
AC : OFF
R FD GH B Y W GL C
RED-24VAC
Purple-FD control
Green-High fan speed
Blue-Reversing valve
Yellow-Compressor
White-Heater
Orange-Low fan speed
Black-Common ground
R FD GH B Y W GL C
Wall mounted thermostat interface
OPTIONAL THERMOSTAT INSTALLATION
Thermostat
Fig.3-7 wall mounted thermostat wiring
NOTE: You should use the Green Connector in the unit for wiring the wall mounted
thermostat. The Green Connector definition refers to the above figure. For details of
operation, see the “Remote Thermostat Change" instructions chapter on page 11.
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COVER INSTALLATION
●Cover will have two tabs on each side which enters into the sleeve's entry points for each tab. Lock
in place by inserting and pushing down.
●The cover should fit comfortably with the unit inside the sleeve.
3 INSTALLATION INSTRUCTIONS
Fig.3-6
Fig.3-8 Tab.3-2

Check list
1.Ensure the chassis is secured with the sleeve.
2.Unit is installed in compliance with all codes.
3.Circuit breakers and wire sizes are correct.
4.Ensure the electrical supply matches the electrical requirements of the unit, and that the unit is properly
grounded.
5.Check whether the electric heat match the power cord.
6.Filter clean and in place.
7.All panels in place.
8.Make sure the chassis is leveled 1/4 bubble towards exterior.
9.Verify that nothing will interfere with the room discharge air or the return air of the units.
Examples:
-Check for curtains or drapes that obstruct the air flow.
-Check for plush carpeting that can obstruct the return air.
-Items like these can cause serious damage to the chassis.
-Ensure work area clean and free of debris.
Start-up
-Plug the power cord to the receptacle.
-Turn on the chassis, and operate all functions.
Wall Thermostat
See wall thermostat instructions to operate thermostat. Test all functions to confirm PTAC unit is working
properly.
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4 FINAL INSPECTION AND START-UP