Installation Instructions
PGAA / PGAD / PGMD / PGME
11/2 to 5 TON
Single Phase, Combination Units
Gas Heat / Electric Cool
TABLEOFCONTENTS
1. SAFETY LABELING AND SIGNAL WORDS .................... 2
DANGER,WARNING AND CAUTION ............................... 2
SIGNALWORDS ............................................... 2
SignatWordsinManuals ........................................ 2
PRODUCTLABELING ........................................... 2
DangerLabel ................................................ 2
WarningLabel ............................................... 2
CautionLabet................................................ 2
2. UNIT DIMENSIONS .................................... 3-4
3. SAFE INSTALLATION REQUIREMENTS ...................... 5
4. LOCATING THE UNIT .................................... 5
ACCESSPANELS .............................................. 5
CLEARANCES................................................. 5
MinimumClearancestoCombustibleConstruction...................... 5
GROUNDLEVEL INSTALLATION ................................... 5
ROOFTOPINSTALLATION........................................ 6
HOISTING.................................................... 6
Downflew Conversion ........................................... 6
HeatingVentAssembty ......................................... 6
CondensateDrain ............................................. 6
5, PRE- EXISTING COMMON VENT CHECK ..................... 7
6. GAS SUPPLY AND PIPING ................................ 7
GABPIPING .................................................. 7
GasPipeSize ............................................... 7
PIPINGATUNIT................................................ 7
Cennectiens................................................. 7
ORIFICES .................................................... 8
OrificeSizes ................................................. 8
ChangingOrifices ............................................. 9
7, ELECTRICAL WIRING ................................... 9
LineVoltageWiring ............................................ 9
GroundConnections ........................................... 9
LineConnections ............................................. 9
THERMOSTAT/HEATANTICIPATOR............................... 9
FinalElectricalCheck .......................................... 9
8. DUCTWORK .......................................... 10
DustworkInsulation ........................................... 10
DustworkConnections......................................... 10
FILTERS .................................................... 10
9. START- UP PROCEDURES ............................... 10
CHECKBEFORESTARTING ..................................... 10
ReverseRotation(ScrotlCompressorsOnly) ......................... 10
ManifoldGasPressureAdjustment................................ 10
GAB PRESSURES............................................. 11
CIRCULATINGAIRBLOWER ..................................... 11
HEATINGSTAR-UPPROCEDURES................................ 11
TemperatureRiseCheck ....................................... t2
FANCONTROLCHECK ......................................... 12
SPEEDTAPS ................................................. 12
CONTINUOUSFANOPERATION .................................. 12
COOLING ................................................... 13
10, OPERATION ......................................... 13
COMBUSTION/INDOORFANCONTROL............................. 13
SCROLLANTI-CYCLE TIMER .................................... 14
11. MAINTENANCE ...................................... 14
MONTHLYMAINTENANCEAND INSPECTIONCHECKS................. 14
Air Fitters .................................................. 14
HEATINGSEASONCHECKS (MONTHLY)........................... 14
Pilot Flame ................................................. 14
MainBurnerFlame ........................................... 14
ANNUALMAINTENANCEANDINSPECTION ......................... 14
CondenserFan Motor ......................................... 15
VENTASSEMBLY ............................................. 15
BLOWERMOTORACCESS ...................................... 15
Method1 .................................................. 15
Motorremovatandreplacement.................................. 15
Method2 .................................................. 15
Burners/ HeatExchangers/ FlueGas Passages...................... 15
INSPECTIONAND CLEANINGOF BURNERASSEMBLY
/HEATEXCHANGERS/FLUEGAS PASSAGES........................ 16
ForQualifiedServiceTechnicianOnly .............................. 16
12. RIGGING INSTRUCTIONS .............................. 17
13, NOTES ............................................. 18
462 O1 1OO4 03 4-18-O5
Printed in U.S.A.
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