AquaMAX 971 Series, Owner'S Manual And Installation Instructions

Page: 43 / 44

43
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:
•
Turn off the water heater (refer to
“To Turn Off the Water Heater”
on page 42).
•
Close all hot water taps.
•
Operate the relief valve lever - do not let the lever snap back or you will
damage the valve seat.
It is very important the lever is raised and lowered
gently .
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.
•
Open the relief valve by holding the lever in the raised position.
This will let air into the water heater and allow the water to drain through the
hose.