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ABOUT YOUR WATER HEATER
7
ANODE PROTECTION
The anode installed in your water heater will slowly dissipate whilst protecting the
cylinder. The life of the water heater cylinder may be extended by arranging for an
authorised person to inspect the anode and replacing it if required.
The suggested time after installation when the anode should be inspected is:
Rheemglas 8 years
Optima 10 years
For softened water supplies or in areas of poor water quality, it is recommended the
anode be inspected 3 years earlier than shown (refer to “Water Supplies” on
page 38).
BLEEDING THE SOLAR COLLECTORS
It is necessary to purge air from the
collector circuit:
· When the water heater is to be turned
on and the solar collectors and solar
hot and cold pipes have been drained.
· After maintenance has been
conducted on the pipe work and air
has entered the system.
· If the circulator appears not to be
circulating water around the system.
To purge air from the collector circuit:
· Ensure the solar storage tank is full of
water and all of the hot taps are
turned off.
· Using a flat blade screwdriver, open
the bleed valve (if it is not already
open) fitted adjacent to the 5 way tee
at the cold water inlet of the water
heater (see diagram).
· The mains pressure will force water to flow from the tank and through the pipe
work, expelling air from the collector circuit through the bleed valve. This is
evidenced by spurting of water from the drain line connected to the bleed
valve.
Warning: Exercise caution, as water may be at a very high temperature.
· Close the bleed valve when water runs freely from the drain line.
air bleed
valve