Rheem W2W Series, Owner'S Manual And Installation Instructions

Page: 68 / 72

68
To Turn Off the Water Heater
If it is necessary to turn off the water heater on completion of the installation,
such as on a building site or where the premises are vacant, then:

Switch off the electrical supply at the isolating switch to the water heater.

Close the cold water isolation valve at each inlet to the water heater.
DRAINING THE WATER HEATER
To drain the water heater:

Turn off the water heater (refer to
“To Turn Off The Water Heater” on
page
68 .

Close all hot water taps.

Operate the relief valve release lever on one of the storage tanks - 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.

Close the isolation valves at the inlets and outlets of the water heater (cold
and hot side) and place a bucket under each inlet side.

Undo the unions at the inlets and outlets of the water heater. The heat
pump heat exchanger holds 5 litres of water and will drain into the bucket.
TROUBLE SHOOTING

Heat Pump Won’t Start
A delay of up to 20 minutes can be experienced before
heat pump starts operating

Incorrect Phase Rotation
PHASE
DETECT
RELAY