York G8C, GF8 service manual 035-19992-001 Rev. a Unitary Products Group

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035-19992-001 Rev. A (0404)

NOTES

Unitary Products Group

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Contents Contact Information Table of ContentsSafety Section I USER’S InformationDescription 150 MBH Input Models Description 50-125 MBH Input ModelsBurner Flame Drawing Instructions for Examining the Furnace InstallationOperating Instructions Furnace User MaintenanceHOW Your GAS Furnace Works START-UP and Shutdown InstructionsAir Filters Removing FiltersExternally Mounted Air Filters Furnace Cleaning Section Section II Service and Maintenance ManualSafety Section Furnace Maintenance SectionIntermittent Blower Cooling Cleaning the Heat ExchangerSequence of Operation Continuous BlowerTroubleshooting Furnace Control DiagnosticsHot Surface Ignition System Ignition Control Description Section III Replacement Parts ListField Installed Accessories NON-ELECTRICAL Replacement Part Contact InformationWiring Diagram Unitary Products Group Section IV Wiring Diagram035-19992-001 Rev. a Unitary Products Group 035-19992-001 Rev. a 035-19992-001 Rev. a Unitary Products Group Unitary 5005 Norman Products York Group Drive 73069 Exclusions