Service Manual

2
INDEX
IMPORTANT INFORMATION ....................................................................................................... 4-5
PRODUCT IDENTIFICATION ....................................................................................................... 6-7
ACCESSORIES ............................................................................................................................... 8
GPGHFR101-103 ....................................................................................................................................................... 9
GPH13MFR FILTER RACK ....................................................................................................................................... 9
PGMDD101-103 DOWNFLOW MANUAL FRESH AIR DAMPERS .......................................................................... 10
PGMDMD102-103 DOWNFLOW MOTORIZED FRESH AIR DAMPERS .................................................................. 10
PGMDH102-103 HORIZONTAL MANUAL FRESH AIR DAMPERS .......................................................................... 10
PGMDH102-103 HORIZONTAL MOTORIZED FRESH AIR DAMPERS .................................................................... 10
SQRPG101-103 SQUARE TO ROUND CONVERTER, DOWNFLOW ...................................................................... 11
SQRPGH101-103 SQUARE TO ROUND CONVERTER, HORIZONTAL ................................................................... 11
GPH13MED103 DOWNFLOW ECONOMIZER ......................................................................................................... 12
PGEH102-103 HORIZONTAL ECONOMIZER ........................................................................................................... 12
PGC101-103 ROOF CURBS .................................................................................................................................... 13
PRODUCT DESIGN ...................................................................................................................... 14
LOCATION AND CLEARANCES ............................................................................................................................. 14
COMPRESSOR ....................................................................................................................................................... 15
INDOOR BLOWER MOTOR .................................................................................................................................... 15
ELECTRICAL WIRING ............................................................................................................................................ 15
LINE VOLTAGE WIRING ......................................................................................................................................... 16
SYSTEM OPERATION .................................................................................................................. 17
*PC/*PH14
COOLING ................................................................................................................................................................ 17
COOLING CYCLE ................................................................................................................................................... 17
HEATING CYCLE .................................................................................................................................................... 17
DEFROST CYCLE ................................................................................................................................................... 18
FAN OPERATION .................................................................................................................................................... 18
SCHEDULED MAINTENANCE..................................................................................................... 20
ONCE A MONTH ..................................................................................................................................................... 20
ONCE A YEAR ........................................................................................................................................................ 20
TEST EQUIPMENT ................................................................................................................................................. 20
SERVICING ................................................................................................................................... 21
COOLING /HEAT PUMP- SERVICE ANALYSIS GUIDE .......................................................................................... 21
S-1 CHECKING VOLTAGE ...................................................................................................................................... 22
S-2 CHECKING WIRING ......................................................................................................................................... 23
S-3 CHECKING THERMOSTAT, WIRING, AND ANTICIPATOR ............................................................................... 23
S-3A Thermostat and Wiring .......................................................................................................................... 23
S-3B Cooling Anticipator ................................................................................................................................ 23
S-3C Heating Anticipator ................................................................................................................................ 23
S-4 CHECKING TRANSFORMER AND CONTROL CIRCUIT .................................................................................. 24
S-7 CHECKING CONTACTOR AND/OR RELAYS ................................................................................................... 24
S-8 CHECKING CONTACTOR CONTACTS ............................................................................................................. 24
S-11 CHECKING LOSS OF CHARGE PROTECTOR .............................................................................................. 25
S-15 CHECKING CAPACITOR ................................................................................................................................25
S-15A Resistance Check .......................................................................................................................... 26
S-15B Capacitance Check ....................................................................................................................... 26
S-16 CHECKING MOTORS ..................................................................................................................................... 27
S-16D Checking EEM Motors .................................................................................................................... 27
S-17 CHECKING COMPRESSOR WINDINGS ........................................................................................................ 28
S-17A Resistance Test .............................................................................................................................. 28
S-17B Ground Test .................................................................................................................................... 28