BTC 120-500 - AO Smith Water Heaters

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BTC TANK TYPE HEATERS SERVICE WORKBOOK BTC WIRING DIAGRAM - NATURAL AND PROPANE GAS Honeywell Ignition System IF ANY OF THE ORIGINAL WIRE AS SUPPLIED MUST BE REPLACED, USE ONLY TYPE 105° C THERMOPLASTIC OR EQUIVALENT. MV (Red) MV/PV (Wht) PV (Blue) Honeywell Gas Valve VR8404 BTC-500 A.O. Smith Water Products Irving, Texas ©1998 39 Service Workbook Training Department
BTC TANK TYPE HEATERS SERVICE WORKBOOK GENERAL SERVICE CHART CONDITION CAUSE SOLUTION PILOT LIGHTS, SPARK CONTINUOUSLY PILOT FLAME NOT PROVING SEE FLAME RECTIFICATION - STEP 16 HEATER WILL NOT IGNITE NOT PROVING PILOT FLAME EXISTANCE INTERRUPT 120 VAC POWER . CHECK GROUND WIRE ATTACHMENT . CLEAN OR REPLACE PILOT ASSEMBLY WEEPING TEMPERATURE AND PRESSURE RELIEF VALVE PREMATURE TANK LEAKAGE PILOT GAS NOT COMPLETELY INTERRUPTED AT END OF HEATING CYCLE THERMAL EXPANSION CONDENSATION CONTAMINATED AIR WATER HAMMER THERMAL EXPANSION . CHECK SUPPLY GAS PRESSURE . REPLACE GAS VALVE ADD THERMAL EXPANSION TANK . INCREASE STORED WATER TEMPERATURE AND CONFIRM PROPERLY SIZED APPLICATION . REMOVE CONTAMINANTS. . SUPPLY CLEAN COMBUSTION AIR. . ADD WATER HAMMER ARRESTOR. . REDUCE WATER PRESSURE. . REMOVE UNNECESSARY CHECK VALVES. ADD THERMAL EXPANSION TANK. DEPLETED ANODES SCHEDULE ANODE CHECKS - REPLACE AS NEEDED. GENERAL SERVICE CHART (continued) A.O. Smith Water Products Irving, Texas ©1998 40 Service Workbook Training Department
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BTC 120-500 - AO Smith Water Heaters

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