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We appreciate your confidence in our products. You should thoroughly read this manual before installation and/or operation of this water heater. Please pay particular attention to the important safety and operating instructions as OWNER'S MANUAL RESIDENTIAL GAS WATER HEATERS Thank you for buying this energy efficient water heater from A.O. Smith Water Products Company. We appreciate your confidence in our products. You should thoroughly read this manual before installation and/or operation of this water heater. Please pay particular attention to the important safety and operating instructions as OWNER'S MANUAL RESIDENTIAL GAS WATER HEATERS Power Vented Gas Models GPSH/GPCR with Hot Surface Ignition well as the WARNINGS and CAUTIONS. TABLE OF CONTENTS PAGE GET TO KNOW YOUR WATER HEATER 2 GENERAL SAFETY INFORMATION 3 INSTALLATION 4-12 OPERATION & LIGHTING INSTRUCTIONS 12-15 MAINTENANCE 15-16 TROUBLESHOOTING 17-18 WARRANTY 19 CAUTION TEXT PRINTED OR OUTLINED IN RED CONTAINS INFORMATION RELATIVE TO YOUR SAFETY. PLEASE READ THOROUGHLY BEFORE INSTALLING AND USING THIS APPLIANCE. A DIVISION OF A.O. SMITH CORPORATION MCBEE, SOUTH CAROLINA KEEP THIS MANUAL IN THE POCKET ON THE HEATER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED. PRINTED IN U.S.A. 0605 PART NO. 185171-001 GET TO KNOW YOUR WATER HEATER REPLACEMENT PARTS AND DELIMING PRODUCTS (A) Vent Pipe - Exhaust (O) Flue Baffle Assembly** (B) Vent Terminal (P) Insulation (C) Vent Adapter-Rubber Boot (Q) Control Harness Replacement parts and recommended delimer may be ordered (D) Blower Assembly (R) Rating Plate through authorized servicers or distributors. Refer to the Yellow (E) Cold Water Inlet (S) Gas Supply Pages for where to call. When ordering parts, provide complete (F) Inlet Water Shut-off Valve (T) Manual Gas Shut-off Valve model and serial numbers (see rating plate), quantity and name (G) Union (U) Ground Joint Union of part desired (as listed in Figure 1). Standard hardware items (H) Inlet Dip Tube (V) Dirt Leg (Sediment Trap) may be purchased locally. (J) Anode** (W) Drain Valve (K) Hot Water Outlet (X) Gas Valve - Thermostat (L) Oulet Receptacle (115 VAC) (Y) Drain Pan (M) Temperature-Pressure (Z) Inner Door Relief Valve (AA) Outer Door (N) Flue (BB) HSI Burner Assembly **Located Under Blower Assembly 2GAS MODELS WITH HOT SURFACE IGNITION & - 2" OR 3" PVC VENT CAPABILITY FIGURE 1 *CAUTION: 115VAC IN CONTROL HARNESS AND INSIDE OUTER DOOR NATURAL HOT SURFACE IGNITER & MAIN BURNER HOT SURFACE IGNITOR SENSOR PROPANE HOT SURFACE IGNITER & MAIN BURNER TEMPERATURE INDICATORS TEMPERATURE ADJUSTMENT BUTTONS HOT SURFACE IGNITOR SENSOR GENERAL SAFETY INFORMATION EXTERNAL DAMAGE Do not operate the water heater until it has been fully checked out by a qualified technician, if the water heater: • Has been exposed to fire or damage. • Displays evidence of sooting. • Produces steam or unusually hot water. If the water heater has been flooded it must be replaced. CHEMICAL VAPOR CORROSION WARNING CORROSION OF THE FLUEWAYS AND VENT SYSTEM MAY OCCUR IF AIR FOR COMBUSTION CONTAINS CERTAIN CHEMICAL VAPORS. SUCH CORROSION MAY RESULT IN FAILURE AND RISK OF ASPHYXIATION. Spray can propellants, cleaning solvents, refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride (water softener salt), waxes, and process chemicals are typical compounds which are potentially corrosive. Do not store products of this sort near the heater. Also, air which is brought in contact with the heater should not contain any of these chemicals. If necessary, uncontaminated air should be obtained from remote or outside sources. The limited warranty is voided when failure of water heater is due to a corrosive atmosphere. (Reference is made to the limited warranty for complete terms and conditions). IMPROPER COMBUSTION WARNING ATTIC AND/OR EXHAUST FANS OPERATING ON THE PREMISES WITH A WATER HEATER CAN RESULT IN CARBON MONOXIDE POISONING AND DEATH. OPERATION OF THESE FANS CAN PRODUCE A NEGATIVE DRAFT IN THE AREA OF THE WATER HEATER PREVENTING THE PRODUCTS OF COMBUSTION FROM EXHAUSTING THROUGH THE VENT PIPE. The venting of the water heater should be inspected by a qualified service technician at the time of installation and periodically thereafter to ensure a down-draft condition does not exist. DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILATING AIR. ADEQUATE AIR FOR COMBUSTION AND VENTILATION MUST BE PROVIDED FOR SAFE OPERATION. LIQUID PETROLEUM MODELS WARNING Water heaters for propane or liquefied petroleum gas (LPG) are different from natural gas models. A natural gas heater will not function safely on LP gas and no attempt should be made to convert a heater from natural gas to LP gas. LP gas must be used with great caution. It is highly explosive and heavier than air. It collects first in the low areas making its odor difficult to detect at nose level. If LP gas is present or even suspected, do not attempt to...
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