Draining The Water Heater - Rheem 310 Owner's Manual And Installation Instructions

DRAINING THE WATER HEATER

To drain the water heater:
"To Turn Off The Water Heater"
Turn off the water heater (refer to on page 35).
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 and attach a hose.
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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