Draining The Water Heater - Rheem XWELL XC-10 Owner's Manual And Installation Instructions

DRAINING THE WATER HEATER

Warning: Exercise care, as water discharged from the water heater may be of a
very high temperature.
To drain the water heater:
Switch off the electrical supply at the isolating switch (if installed) near the water

heater or outside of the bathroom, or at the water heater isolating switch on the
switchboard.
Close the cold water isolation valve at the inlet to the water heater.

Open a hot water tap.

Ensure there is a drain line attached to the pressure relief valve outlet. If required,

attach a drain line and direct it to a drain.
Operate the pressure relief valve lever - do not let the lever snap back or you will

damage the valve seat.
Allow the water to drain from the pressure relief valve drain.
Alternatively if the water heater is not draining or is slow to drain;


Return the pressure relief valve lever to the closed position.

Open the cold water isolation valve at the inlet to the water heater.

Allow hot water to flow from the hot tap until it runs cold.

Close the hot tap.

Close the cold water isolation valve at the inlet to the water heater.

Undo the pressure relief valve at the cold water inlet to the water heater, attach
a hose to the water heater inlet and direct the hose to a drain.
Exercise care as water will begin to discharge from the water heater when the
pressure relief valve is removed.

Disconnect the union at the hot water outlet of the water heater.
Water will now flow from the hose attached to the cold water inlet.
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