Installation Guide
2
DUCTING ..................................................... 5
Connecting the Return and Supply Flexible Duct
in Manufactured or
Modular Housing Application ........................... 5
Plenum Application ....................................... 6
Filters ........................................................ 6
PIPING........................................................ 6
Condensate Drain ......................................... 6
WIRING....................................................... 6
High Voltage Wiring ...................................... 7
Low Voltage Wiring ....................................... 7
Internal Wiring: ........................................... 7
OPERATION .................................................. 7
Start-Up Procedure and Checklist .................... 7
Heat Pump Start-Up Procedure ....................... 8
Final System Checks...................................... 8
COMPONENTS ............................................... 9
Contactor.................................................... 9
Crankcase Heater ......................................... 9
Condenser Motor .......................................... 9
Compressor ................................................. 9
Contactor Relay............................................ 9
Defrost Control ............................................ 9
Outdoor Thermostat ...................................... 9
Reversing Valve Coil ...................................... 9
Indoor Blower Motor...................................... 9
Blower Interlock Relay ................................... 9
EXPLANATION AND GUIDANCE (HEAT PUMP) .......... 9
DEFROST CONTROL ....................................... 10
SUGGESTED FIELD TESTINGN/TROUBLESHOOTING .. 10
AIR FLOW MEASUREMENT AND ADJUSTMENT.........10
ADJUSTING SPEED TAP FOR INDOOR
BLOWER MOTOR ...........................................10
EXPANSION VALVE (TXV) SYSTEM
SINGLE SPEED APPLICATION
(GPH1624-42) ..........................................11
TWO SPEED APPLICATION (GPH1648 / GPC1560) .. 12
ELECTRIC HEAT INSTALLATION & ADJUSTMENT ...... 12
MAINTENANCE ............................................. 13
SERVICE ..................................................... 13
Inadequate Air Volume Through Indoor Coil.......13
Outside Air Into Return Duct ..........................13
Undercharge ..............................................13
Poor “Terminating” Sensor Contact .................13
Malfunctioning Reversing Valve ......................13
BLOWER PERFORMANCE GP* 15/16 SEER ....... 14-15
TROUBLESHOOTING CHART.............................. 16
START-UP CHECKLIST ..................................... 18
TO THE INSTALLER
Carefully read all instructions for the installation prior to in-
stalling unit. Make sure each step or procedure is understood
and any special considerations are taken into account before
starting installation. Assemble all tools, hardware and sup-
plies needed to complete the installation. Some items may
need to be purchased locally. After deciding where to install
unit, closely look the location over - both the inside and out-
side of home. Note any potential obstacles or problems 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 compressor. Compressor damage may occur if this step is not
followed.
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.
SHIPPING INSPECTION
Checking Product Received
Upon receiving the unit, inspect it for damage from shipment. Claims for damage, either shipping or concealed, should be
filed immediately with the shipping company. Check the unit model number, specifications, electrical characteristics and
accessories to determine if they are correct. In the event an incorrect unit is shipped, it must be returned to the supplier
and must NOT be installed. The manufacturer assumes no responsibility for installation of incorrectly shipped units.
WARNING
I
NSTALLATION
AND
REPAIR
OF
THIS
UNIT
SHOULD
BE
PERFORMED
ONLY
BY
INDIVIDUALS
MEETING
THE
REQUIREMENTS
OF
AN
“E
NTRY
L
EVEL
T
ECHNICIAN
”
AS
SPECIFIED
BY
THE
A
IR
-C
ONDITIONING
, H
EATING
,
AND
R
EFRIGERATION
I
NSTITUTE
(AHRI). A
TTEMPTING
TO
INSTALL
OR
REPAIR
THIS
UNIT
WITHOUT
SUCH
BACKGROUND
MAY
RESULT
IN
PRODUCT
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
.
(
AT
A
MINIMUM
)