PLEASE READ THIS MANUAL CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE BY A
SERVICE TECHNICIAN.
1-WarningsAndSafetySymbols..........................................................................................................................3
2-FurnaceDimensionsAndClearanceToCombustibles....................................................................................6
3-InstallationRequirements................................................................................................................................7
4-FurnaceSizing....................................................................................................................................................9
5-LocationOfUnit...............................................................................................................................................10
6-CombustibleClearances.................................................................................................................................12
7-DuctWork.........................................................................................................................................................12
8-VentilationAndCombustionAir.....................................................................................................................13
9-VentingAndCombustionAirPiping..............................................................................................................14
10-Non-DirectVentFurnaceInstallations(UsingIndoorCombustionAir)....................................................15
11-DeterminingCombustionAir........................................................................................................................15
12-VentingGuidelines........................................................................................................................................18
13-Terminations..................................................................................................................................................22
14-VentClearances.............................................................................................................................................26
15-VentAndDrainingOptions-Upflow............................................................................................................29
16-CondensateDrains........................................................................................................................................33
17-GasSupplyAndPiping..................................................................................................................................34
18-Conversions....................................................................................................................................................36
19-ElectricalSpecifications.................................................................................................................................39
20-LowVoltageWiring.......................................................................................................................................41
21-OptionalAccessories(FieldSupplied/Installed)..........................................................................................42
22-StartupProcedures........................................................................................................................................42
23-AirFlow...........................................................................................................................................................44
24-MaintenanceAndTroubleshooting.............................................................................................................47
25-TroubleshootingFlowchart..........................................................................................................................50
26-DiagnosticCodesForStatusLed..................................................................................................................51
27-WireDiagramForTwoStageFurnaceWithECM.........................................................................................53
28-VentingChecklist...........................................................................................................................................54
29-ReplacementPartsList..................................................................................................................................55
TABLE OF CONTENTS
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