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

Models: G8C GF8

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035-19992-001 Rev. A (0404)

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Unitary Products Group

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Contents

CONTACT INFORMATION TABLE OF CONTENTSSAFETY SECTION I USER’S INFORMATIONFIRE OR EXPLOSION HAZARD DESCRIPTION 50-125MBH INPUT MODELSDESCRIPTION 150 MBH INPUT MODELS 035-19992-001Rev. A035-19992-001Rev. A Unitary Products GroupOperating Instructions FURNACE USER MAINTENANCEHOW YOUR GAS FURNACE WORKS START-UPAND SHUTDOWN INSTRUCTIONS035-19992-001Rev. A Air FiltersRemoving Filters Externally Mounted Air FiltersFURNACE CLEANING SECTION SECTION II SERVICE AND MAINTENANCE MANUALSAFETY SECTION FURNACE MAINTENANCE SECTIONSEQUENCE OF OPERATION Cleaning the Heat ExchangerLower Heat Exchanger Access Upper Heat Exchanger Access035-19992-001Rev. A TROUBLESHOOTINGFURNACE CONTROL DIAGNOSTICS Hot Surface Ignition SystemUnitary Products Group 035-19992-001Rev. ADESCRIPTION SECTION III REPLACEMENT PARTS LISTDESCRIPTION 035-19992-001Rev. ADescription FIELD INSTALLED ACCESSORIES - NON-ELECTRICALField Installed Accessories-Non-Electrical Part NumberUnitary Products Group SECTION IV WIRING DIAGRAMFIGURE 15 Wiring Diagram 035-19992-001Rev. AUnitary Products Group 035-19992-001Rev. A035-19992-001Rev. A Unitary Products Group 035-19992-001Rev. ANorman EXCLUSIONSUnitary 5005