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5

The unit should be set on a solid, level foundation - preferably a concrete
slab at least 4 inches thick. The slab should be above ground level and
surrounded by a graveled area for good drainage. Any slab used as a
unit’s foundation should not adjoin the building as it is possible that
sound and vibration may be transmitted to the structure. For rooftop
installation, steel or treated wood beams should be used as unit support
for load distribution.
Heat pumps require special location consideration in areas of heavy
snow accumulation and/or areas with prolonged continuous subfreezing
temperatures. Heat pump unit bases have holes under the outdoor coil
to permit drainage of defrost water accumulation. The unit must be
situated to permit free unobstructed drainage of the defrost water and
ice. A minimum 2" clearance under the outdoor coil is required in the
milder climates.

Outside Slab Installation (Figure 1)

1. The unit must be mounted on a solid, level foundation.
2. Select a location that will minimize the length of the supply and

return ducts.

3

Select a location where external water drainage cannot collect around
the unit.

4. Consideration should also be given to shade, appearance

and noise.

Rooftop Installation (Figure 2)

1. Before locating the unit on the roof, make sure that the

strength of the roof and beams is adequate to support
the weight involved. (See specification sheet for weight
of units.) This is very important and the installer’s
responsibility.

2. Make proper consideration for the weather–tight integrity

of the roof and proper drainage of condensate.

3. To ensure proper condensate drainage, unit must be installed

in a level position.

4. Consideration should also be given to shade, appearance

and noise.

DUCTING

Ducting work should be fabricated by the installing contractor in
accordance with local codes. Industry manuals may be used as a
guide when sizing and designing the duct system- such as NESCA
(National Environmental Systems Contractors Association, 1501
Wilson Blvd., Arlington, Virginia 22209).
The unit should be placed as close as possible to the space to be air-conditioned allowing clearance dimensions as
indicated. Ducts should run as directly as possible to supply and return outlets. Use of non-flammable weatherproof
flexible connectors on both supply and return connections at the unit to reduce noise transmission is recommended.
It is preferable to install the unit on the roof of the structure if the registers or diffusers are located in the wall or
ceiling. A slab installation is recommended when the registers are low on the wall or in the floor.

Connecting the Return and Supply Flexible Duct in Manufactured or Modular Housing Application

The return and supply fittings are to be attached at the unit to a suitable square to round duct converter.  Your
distributor has a factory designed square to round converter transition.  The model #’s of these kits are as follows:
Small Chassis 25” SQRPCH101, Medium Chassis 27.5” SQRPCH102, Large and Extra Large Chassis 32.5:” and 36” SQRPCH103
(See Specification Sheets for Dimension details).  The SQRPCH101 has 14" duct collar on supply and 16" duct collar
(equivalent diameter, opening is oval) on the return. The SQRPCH102 and SQRPCH103 have 14" duct collar on supply
and 18" duct collar (equivalent diameter, opening is oval) on the return. The collars are to be slipped into the
openings, and the flanges bent around the converter. The square to round converter is attached to the flanges of the
square duct openings.  The flexible duct is then clamped on to the collars. Once the duct is affixed to the unit, 

seal

the collars and flanges with a proper waterproof sealant

  (See Figure 3).

It is strongly encouraged to use appropriately sized ducts based upon the CFM for your application (unit’s CFM).  If
duct sizing through industry manuals or air duct calculators require larger ducts than converter openings, run larger
duct size up to unit converter openings and reduce with a reducer duct fitting or transition right at the unit.

36"

36"

24"

PL

EN

UM

UN

IT

PL

AT

FO

RM

CU

RB

FIGURE 2

WARNING

D

O

 

NOT

UNDER

 

ANY

 

CIRCUMSTANCES

CONNECT

 

RETURN

 

DUCT

-

WORK

 

TO

 

ANY

 

OTHER

 

HEAT

 

PRODUCING

 

DEVICES

 

SUCH

 

AS

 

FIRE

-

PLACE

 

INSERT

STOVE

ETC

.  U

NAUTHORIZED

 

USE

 

OF

 

SUCH

 

DEVICES

MAY

 

RESULT

 

IN

 

PROPERTY

 

DAMAGE

FIRE

CARBON

 

MONOXIDE

POISONING

EXPLOSION

PERSONAL

 

INJURY

 

OR

 

DEATH

.

NOMINAL SIZE  (INCHES)

NOMINAL AREA     (SQ. FT.)

10x20

1.4

14x20

1.9

14x25

2.4

15x20

2.1

16x20

2.2

16x25

2.8

20x20

2.8

20x25

3.5

25x25

4.3

MINIMUM FILTER SIZE

TABLE 1

Summary of Contents for GPC1524H41

Page 1: ...signed and manufactured to meet ENERGY STAR criteria for energy efficiency when matched with appropriate coil components However proper refrigerant charge and proper air flow are critical to achieve rated capacity and efficiency Installation of this product should follow the manufacturer s refrigerant charging and air flow instructions Failure to confirm proper charge and air flow may reduce energ...

Page 2: ...nd outside of home Note any potential obstacles or prob lems that might be encountered as noted in this manual Choose a more suitable location if necessary IMPORTANT NOTE If a crankcase heater is used the unit should be energized 24 hours prior to compressor start up to ensure crankcase heater has sufficiently warmed the com pressor Compressor damage may occur if this step is not followed Before u...

Page 3: ...EPLACE ANY PART OF THE CONTROL SYSTEM AND ANY GAS CONTROL HAVING BEEN UNDER WATER WARNING THIS UNIT MUST NOT BE USED AS A CONSTRUCTION HEATER DURING THE FINISHING PHASES OF CONSTRUCTION ON A NEW STRUCTURE THIS TYPE OF USE MAY RESULT IN PREMATURE FAILURE OF THE UNIT DUE TO EXTREMELY LOW RETURN AIR TEMPERATURES AND EXPOSURE TO CORROSIVE OR VERY DIRTY ATMOSPHERES CODES AND REGULATIONS General The PC ...

Page 4: ...s and regulations MAJOR COMPONENTS General The unit includes a hermetically sealed refrigerating system consisting of a compressor condenser coil evaporator coil with flowrator an indoor blower a condenser fan and all necessary internal electrical wiring The heat pump also includes a reversing valve solenoid defrost thermostat and control and loss of charge protection The system is factory evacuat...

Page 5: ...ons as indicated Ducts should run as directly as possible to supply and return outlets Use of non flammable weatherproof flexible connectors on both supply and return connections at the unit to reduce noise transmission is recommended It is preferable to install the unit on the roof of the structure if the registers or diffusers are located in the wall or ceiling A slab installation is recommended...

Page 6: ...e consulted to determine the availability of sufficient power to operate the unit The voltage frequency and phase at the power supply should be checked to make sure it corresponds to the unit s RATED VOLTAGE REQUIREMENT Install a branch circuit fused disconnect near the unit in accordance with the N E C or local codes Wire sizes and overcurrent protection should be determined from the unit namepla...

Page 7: ...the unit 2 Wire size based on 60 C rated wire insulation and 30 C Ambient Temperature 86 F 3 For more than 3 conductors in a raceway or cable see the N E C for derating the ampacity of each conductor OPERATION Start Up Procedure and Checklist Begin with power turned off at all disconnects 1 Turn thermostat system switch to Cool and fan switch to Auto and turn temperature setting as high as it will...

Page 8: ...heat if installed should now come on Make sure it operates properly NOTE If outdoor thermostats are installed the outdoor ambient must be below the set point of these thermostats for the heaters to operate It may be necessary to jumper these thermostats to check heater operation if outdoor ambient is mild 14 For thermostats with emergency heat switch return to step 11 The emergency heat switch is ...

Page 9: ...age to the product which may not be covered by the manufacturer s warranty 8 Reversing Valve Coil This coil is activated by the thermostat in the cooling mode and during defrost It positions the reversing valve pilot valve for cooling operation 9 Indoor Blower Motor Units with EEM Motors The EEM model indoor blower motor is activated by the room thermostat by COOLING HEATING or FAN ON position The...

Page 10: ... should close To verify this check for 24 volts between DFT and C on board If the temperature at the thermostat is less than 28 F and the thermostat is open replace the unit s defrost thermostat as it is defective 7 When the unit s defrost thermostat has closed short the test pins on the defrost board until the reversing valve shifts indicating defrost This should take up to 22 seconds depending o...

Page 11: ...meter on liquid small line near liquid line access fitting with adequate contact and insulate for best possible reading 3 Check subcooling and superheat Systems with TXV application should have a subcooling and superheat within the range listed on the chart a If subcooling and superheat are low adjust TXV then check subcooling b If subcooling is low and superheat is high add charge to raise subcoo...

Page 12: ... Heat Pump should operate for many years without excessive service calls if the unit is installed properly However it is recommended that the homeowner inspect the unit before a seasonal start up The coils should be free of debris so adequate airflow is achieved The return and supply registers should be free of any obstructions The filters should be cleaned or replaced These few steps will help to...

Page 13: ...e due to 1 Solenoid not energized In order to determine if the solenoid is energized touch the nut that holds the solenoid cover in place with a screwdriver If the nut magnetically holds the screwdriver the solenoid is energized and the unit is in the cooling cycle 2 No voltage at unit s solenoid Check unit voltage If no voltage check wiring circuit 3 Valve will not shift a Undercharged check for ...

Page 14: ... 775 720 666 Watts 97 109 122 134 147 159 172 184 CFM 1123 1068 1014 959 905 850 796 741 Watts 123 136 148 161 173 186 198 211 CFM 1462 1409 1357 1305 1252 1200 1147 1095 Watts 241 253 266 278 291 303 315 328 CFM 1005 961 918 874 831 787 744 700 Watts 91 102 114 125 137 149 160 172 CFM 1110 1067 1023 980 936 893 849 806 Watts 120 132 144 155 167 178 190 202 CFM 1462 1409 1357 1305 1252 1200 1147 1...

Page 15: ...39 150 161 175 186 190 207 CFM 1712 1655 1587 1541 1486 1444 1393 1340 Watts 337 348 358 375 385 405 414 416 CFM 2002 1935 1885 1827 1767 1732 1669 1618 Watts 498 521 516 534 551 567 571 574 CFM 1337 1297 1218 1155 1118 1088 1022 989 Watts 179 190 203 210 225 243 249 268 CFM 1694 1646 1598 1549 1501 1453 1405 1357 Watts 296 303 311 319 327 334 342 350 CFM 1919 1870 1822 1774 1726 1678 1629 1581 Wa...

Page 16: ...essor stuck grounded or open winding open internal overload b Wait at least 2 hours for overload to reset If still open replace the compressor c Low voltage connection c At compressor terminals voltage must be within 10 of nameplate volts when unit is operating d Capacitor weak open or shorted d Check capacitor If defective replace Low suction cool compressor a a Iced evaporator coil a Defective o...

Page 17: ... evaporator coil The safest way to clean the evaporator coil is to sim ply flush the coil with water This cleaning practice remains as the recommended cleaning method for both copper tube and aluminum tube residential cooling coils An alternate cleaning method is to use one of the products listed in the technical publication TP 109 shipped in the literature bag with the unit to clean the coils The...

Page 18: ...rance around the unit for safety service maintenance and proper unit operation Verify proper weatherproofing of all ductwork roof curbs and electrical connections Check that the flue screen is in place Check gas piping for leaks Verify gas pressure to the unit is within the range specified on the serial plate Check to ensure that all fans pulleys and wheels are secure Check for proper belt tension...

Page 19: ...it 1 Compressor Amps Circuit 2 Compressor Amps Blower Amps Condenser Fan Amps ELECTRICAL Total External Static Pressure Blower Wheel RPM TEMPERATURES Outdoor Air Temperature Return Air Temperature Cooling Supply Air Temperature Discharge Circuit 1 Heating Supply Air Temperature PRESSURES Gas Inlet Pressure Gas Manifold Pressure Suction Circuit 1 Suction Circuit 2 Discharge Circuit 2 Superheat Orif...

Page 20: ...feedback page PRODUCT REGISTRATION Thank you for your recent purchase Though not required to get the protection of the standard warranty registering your product is a relatively short process and entitles you to additional warranty protection except that failure by California and Quebec residents to register their product does not diminish their warranty rights For Product Registration please regi...

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