Rheem 300 series installation instructions Draining the Water Heater

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DRAINING THE WATER HEATER

To drain the water heater:

Turn off the water heater (refer to “To Turn Off The Water Heater” on page 23).

Close all hot water taps.

Operate the relief valve release lever - do not let the lever snap back or you will damage the valve seat.

Operating the lever will release the pressure in the water heater.

Undo the union at the cold water inlet to the water heater and attach a hose to the water heater side of the union.

Let the other end of the hose go to a drain.

Operate the relief valve again.

This will let air into the water heater and allow the water to drain through the hose.

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Contents Owners Guide Installation Instructions Patents Contents Temperature Adjustment About Your Water HeaterModel Type HOW HOT should the Water BE?Safety To Turn OFF the Water HeaterTo Turn on the Water Heater Does the Water Quality Affect the Water HEATER?HOW Long will the Water Heater LAST? Anode ProtectionHOW Your Water Heater Works Mains PressurePiezo Ignition Pilot IgniterRegular Care Expansion Control Valve ServicingNot Enough HOT Water or no HOT Water Save a Service CallWater not HOT Enough Temperature Pressure Relief Valve Running Normal OperationContinuous dribble Steady flows for long period often at nightWater Heater Appears to be Leaking CAN’T Light the Pilot FlameHigh GAS Bills Installation Water Heater LocationSafe Tray Mains Water SupplyTank Water Supply HOT Water DeliveryTemperature Limiting Device Circulated HOT Water Flow and Return SystemAnode Types Reducing Heat LossesSaddling Pipe Work Dimensions and Technical Data Gas DetailsTypical Installation Indoor Location Connection Sizes Connections PlumbingWater Inlet and Outlet Pipe Sizes GAS InletRelief Valve Relief Valve Drain To Fill and Turn on the Water Heater CommissioningGAS Inlet Pressure Safety Information For Your Safety Read Before LightingLighting the Water Heater Using the gas control light the water heater as follows Lighting InstructionsTest the Water Heater After Installation AIR ShutterClose Down Procedure Draining the Water Heater This page is intentionally blank Anode Water SuppliesSaturation Index Warranty Conditions Warranty ExclusionsWarranty Rheem will