320386-001 - AO Smith Water Heaters
320386-001 - AO Smith Water Heaters
320386-001 - AO Smith Water Heaters
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TABLE OF CONTENTS<strong>Water</strong> Heater Safety .............................................................................................................................................................................. 1Safe Installation, Use and Service ...................................................................................................................................................... 3Safety Precautions ............................................................................................................................................................................ 3-4Typical Installation ............................................................................................................................................................................... 5Installing your Gas <strong>Water</strong> Heater ..................................................................................................................................................... 6-8Important Information About Your <strong>Water</strong> Heater ...................................................................................................................... 6Consumer Information ............................................................................................................................................................. 6Consumer Responsibilities ...................................................................................................................................................... 6Unpacking the <strong>Water</strong> Heater ................................................................................................................................................... 6Location Requirements ............................................................................................................................................................ 7Site Location ............................................................................................................................................................................ 7Clearances and Accessibility ................................................................................................................................................... 8State of California .................................................................................................................................................................... 8Gas Supply ....................................................................................................................................................................................... 9-10Gas Requirements .................................................................................................................................................................... 9Gas Piping ............................................................................................................................................................................... 9Gas Pressure ........................................................................................................................................................................... 9Gas Pressure Testing ............................................................................................................................................................... 9LP Gas Only ........................................................................................................................................................................... 10Combustion Air and Ventilation ....................................................................................................................................................11-15Unconfined Space ...................................................................................................................................................................11Confined Space ......................................................................................................................................................................11All Air from Inside the Building ............................................................................................................................................... 12All Air from Outdoors .............................................................................................................................................................. 12Louvers and Grilles ........................................................................................................................................................... 12-13Vent Pipe System .................................................................................................................................................................. 13Draft Hood Installation ...................................................................................................................................................... 13-14Vent Pipe Size ....................................................................................................................................................................... 14Vent Connectors .................................................................................................................................................................... 14Chimney Connection .............................................................................................................................................................. 14Vertical Exhaust Gas Vent ................................................................................................................................................ 14-15<strong>Water</strong> System Piping ..................................................................................................................................................................... 15-18Piping Installation .............................................................................................................................................................. 15-16Closed System/Thermal Expansion ....................................................................................................................................... 16Temperature & Pressure Relief Valve .................................................................................................................................... 17T&P Relief Valve and Pipe Installation .................................................................................................................................. 17Combination Space Heating/Potable <strong>Water</strong> System ........................................................................................................ 17-18Solar Installation .................................................................................................................................................................... 18Important Information About this <strong>Water</strong> Heater .............................................................................................................................. 19Operating Your <strong>Water</strong> Heater ....................................................................................................................................................... 20-26Lighting Instructions .......................................................................................................................................................... 20-21Checking the Draft ................................................................................................................................................................. 22Burner Flames ....................................................................................................................................................................... 22Emergency Shutdown ............................................................................................................................................................ 22<strong>Water</strong> Temperature Regulation ......................................................................................................................................... 22-23Operating the Temperature Control System ........................................................................................................................... 23Operational Conditions ..................................................................................................................................................... 23-24Draining and Flushing ............................................................................................................................................................. 25Routine Preventive Maintenance ........................................................................................................................................... 25Temperature and Pressure Relief Valve ........................................................................................................................... 25-26Maintenance of Your <strong>Water</strong> Heater .............................................................................................................................................. 26-29Replacement Parts ................................................................................................................................................................ 26Removing the Burner from the Manifold/Burner Assembly ................................................................................................... 26Replacing the Pilot / Thermopile Assembly ........................................................................................................................... 27External Inspection & Cleaning of the Base-Ring Filter ........................................................................................................ 28Cleaning the Combustion Chamber and Flame-arrestor ....................................................................................................... 28Replacing the Manifold Burner/Assembly ......................................................................................................................... 28-29Piezoelectric Igniter System .................................................................................................................................................. 29Testing the Igniter System ..................................................................................................................................................... 29Removing and Replacing the Gas Control Valve/Thermostat ............................................................................................... 29FVIR System Operational Checklist ...................................................................................................................................... 30Troubleshooting Checklist ........................................................................................................................................................... 30-31Pilot Light Troubleshooting Flowchart ............................................................................................................................................ 32Status Light and Diagnostic Code Troubleshooting Chart ........................................................................................................ 33-34Notes .... ............................................................................................................................................................................................... 35Repair Parts ................................................................................................................................................................................... 36-37Warranty .......................................................................................................................................................................................... 38-392
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