Rheem GAS BOOSTED SOLAR WATER HEATER - Manual (Page 51)

51
DRAINING THE WATER HEATER
To drain the water heater:
Gas Booster Water Heater
• Turn off the water heater (refer to “To Turn Off The Water Heater” on page 50).
• Open a hot tap (preferably the shower outlet).
• Unscrew the two drain plugs, one each at the cold water inlet and hot water outlet, on the
underside of the gas booster.
Water will drain from the gas booster.
• When water stops flowing from the gas booster, close the hot tap.
Note: It is recommended not to screw the drain plugs back in, until the water heater is to be turned on
again.
Solar Storage Tank
• Turn off the water heater (refer to “To Turn Off The Water Heater” on page 50).
• 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 solar storage tank 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.