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DRAINING THE WATER HEATER
GAS BOOSTER WATER HEATER
To drain the gas booster water heater:
Turn off the water heater (refer to
“To Turn Off The Water Heater”
on page 59).
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
Warning:
Exercise care, as water discharged from the solar storage tank may be of a very high
temperature.
To drain the storage tank:
Turn off the water heater (refer to
“To Turn Off The Water Heater”
on page 59).
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.
