Installation Instructions
I PGAA / PGAC / PGAD - 11/2 to 5 TON
PGMD/PGME
COMBINATIONUNITS
GASHEAT/ELECTRICCOOL
TABLEOFCONTENTS
1. SAFETY LABELING AND SIGNAL WORDS .................... 2
DANGER,WARNINGAND CAUTION ............................... 2
SIGNALWORDS ............................................... 2
SignalWordsin Manuals ........................................ 2
PRODUCTLABELING ........................................... 2
DangerLabel ................................................ 2
WarningLabel ............................................... 2
CautionLabel................................................ 2
2. UNIT DIMENSIONS ..................................... 3-4
3. SAFE INSTALLATION REQUIREMENTS ...................... 5
4. LOCATING THE UNIT .................................... 5
ACCESSPANELS .............................................. 5
CLEARANCES................................................. 5
MinimumClearancesto CombustibleConstruction...................... 5
GROUNDLEVEL INSTALLATION................................... 5
ROOFTOPINSTALLATION...................................... 5-6
HOISTING .................................................... 6
DownflowConversion........................................... 6
HeatingVentAssembly ......................................... 6
CondensateDrain ............................................. 6
5. PRE- EXISTING COMMON VENT CHECK ...................... 7
6. GAS SUPPLY AND PIPING ................................ 7
GASPIPING .................................................. 7
GasPipeSize ............................................... 7
PIPINGATUNIT................................................ 7
Connections................................................. 7
ORIFICES .................................................... 7
OrificeSizes ................................................. 7
ChangingOrifices ............................................. 8
7. ELECTRICAL WIRING .................................... 8
UneVoltageWiring ............................................ 8
GroundConnections ........................................... 8
UneConnections .............................................8
THERMOSTAT/HEAT ANTICIPATOR ...............................8
FinalElectricalCheck .......................................... 8
8. DUCTWORK ........................................... 8
DuctworkInsulation ........................................ 9
DuctworkConnections.......................................... 9
FILTERS ..................................................... 9
9. START- UP PROCEDURES ................................ 9
CHECKBEFORESTARTING ...................................... 9
ReverseRotation(ScrollCompressorsOnly) .......................... 9
ManifoldGasPressureAdjustment................................. 9
GASPRESSURES.............................................. 9
CIRCULATINGAIRBLOWER ..................................... 10
HEATINGSTAR-UP PROCEDURES................................ 10
TemperatureRiseCheck ....................................... 10
FANCONTROLCHECK ......................................... 10
SPEEDTAPS................................................. 11
CONTINUOUSFANOPERATION .................................. 11
COOLING ................................................... 11
10. OPERATION ......................................... 12
COMBUSTIONIINDOORFANCONTROL............................. 12
SCROLLANTI-CYCLETIMER .................................... 12
11. MAINTENANCE ....................................... 12
MONTHLYMAINTENANCEANDINSPECTIONCHECKS ................. 12
Air Filters .................................................. 12
HEATINGSEASONCHECKS (MONTHLY) ........................... 12
Pilot Flame ................................................. 12
MainBurnerFlame ........................................... 12
ANNUALMAINTENANCEANDINSPECTION ......................... "12
CondenserFan Motor ......................................... 12
VENTASSEMBLY ............................................. 13
BLOWERMOTORACCESS ...................................... 13
Method1 .................................................. 13
Motorremovalandreplacement.................................. 13
Method2 .................................................. 13
Burners/ HeatExchangers/ FlueGas Passages ...................... t3
INSPECTIONANDCLEANINGOF BURNERASSEMBLY
/HEATEXCHANGERS/FLUEGASPASSAGES..................... 13-14
ForOaaiifiedServiceTechnicianOnly ........................... t3-t4
12. RIGGING INSTRUCTIONS .............................. 15
13. NOTES ............................................. 16
462 01 1004 00
10-23-01
Printed in U.S.A.
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