320386-001 - AO Smith Water Heaters

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Fire or Explosion HarzardDo not store or use gasoline or other flammable vapors andliquids in the vicinity of this or any other appliance.Avoid all ignition sources if you smell Natural or LP gas.Do not expose water heater control to excessive gaspressure.Use only gas shown on rating plate.Maintain required clearances to combustibles.Keep ignition sources away from faucets after extendedperiod of non-use.Read instruction manual beforeinstalling, using or servicingwater heater.Fire or Explosion HarzardHydrogen gas can be produced in a hot water system aftera period of non-use (generally two or more weeks).Hydrogen gas is extremely flammable and can ignite.To return hot water system to service, open a hot waterfaucet in kitchen for several minutes before using electricalappliances.Do not smoke or have open flame near faucet while it is open.Leave hot water faucet open until the sound of escapingair stops.After extended period of non-use,purge gases from hot water system.4
TYPICAL INSTALLATIONGET TO KNOW YOUR WATER HEATER - GAS MODELSA Vent PipeB Draft HoodC Anode (Not Shown)D Hot Water OutletE InsulationF Gas Supply PipingG Manual Gas Shut-off ValveH Ground Joint UnionI Drip Leg (Sediment Trap)J Inner DoorK Outer DoorL UnionM Inlet Water Shut-off ValveN Cold Water InletO Inlet Dip TubeP Temperature-Pressure Relief ValveQ Rating PlateR Flue BaffleS Gas Control Valve/ThermostatT Drain ValveU Manifold/Burner AssemblyV FlueW Metal Drain PanX Piezo IgniterY Base-Ring Filter* INSTALL IN ACCORDANCEWITH LOCAL CODES.* DRIP LEG AS REQUIREDBY LOCAL CODES.(S) GAS CONTROL VALVE/THERMOSTATTO VENTTERMINATION ONROOFGas Control/Temperature KnobStatusLight120°FMarkAINSTALL THERMAL EXPANSIONTANK IF WATER HEATER ISINSTALLED IN ACLOSED WATER SYSTEMVACDBLMNIgniterTemperatures shown are approximates and may vary.OVACUUM RELIEFVALVE*INSTALL PERLOCAL CODES(U) MANIFOLD/BURNER ASSEMBLYREPMAIN BURNERPILOT TUBETHERMOPILEMANIFOLDTUBEQGFMANIFOLD DOORIGNITER WIREHVSDISCHARGE PIPE(DO NOT CAP OR PLUG.)TIU6” MAXIMUMAIR GAPW YJXK* ALL PIPING MATERIALS TO BESUPPLIED BY CUSTOMERS.FLOOR DRAIN5
Page 1 and 2: Installation Instructions and Use &
Page 3: SAFE INSTALLATION, USE AND SERVICEY
Page 7: Location RequirementsWARNINGCarbon
Page 10 and 11: LP Gas OnlyWARNINGExplosion HazardH
Page 12 and 13: PERMANENTOPENINGS TOTHE OUTSIDE ORA
Page 14: Align the legs of the draft hood wi
Page 18 and 19: • This water heater is not to be
Page 20 and 21: OPERATING YOUR WATER HEATERLighting
Page 22 and 23: Checking the DraftWater Temperature
Page 24 and 25: Excessive condensation can cause pi
Page 26 and 27: VACproperly. To prevent water damag
Page 28 and 29: External Inspection & Cleaning of t
Page 30 and 31: FVIR System Operational Checklist1.
Page 32 and 33: PILOT LIGHT TROUBLESHOOTING FLOWCHA
Page 34 and 35: STATUS LIGHT AND DIAGNOSTIC CODE TR
Page 36 and 37: REPAIR PARTS ILLUSTRATIONWhen order
Page 38 and 39: LIMITED RESIDENTIAL GAS WARRANTYTHI
Page 40: Copyright © 2010 A.O. Smith Corpor

320386-001 - AO Smith Water Heaters

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