SAFETY, WARNINGS, INSTALLATION NOTES
9
•
Servicing of a water heater must only be carried out by qualified personnel.
Phone Aquamax Service.
•
Only a person qualified to install or service a water heater should drain the
water heater, if this is required.
•
Do not modify this water heater.
RELIEF VALVES
Temperature Pressure Relief Valve
This water heater incorporates a temperature
pressure relief valve located near the top of the
water heater. This valve is essential for the water
heater’s safe operation.
It is possible for the valve to discharge a quantity
of water through the drain line during each
heating period. This quantity should be equal to
approximately 1/50 of the hot water used, as
water expands by this volume when heated.
Expansion Control Valve
In many areas, including South Australia,
Western Australia and scaling water areas, it is
mandatory an expansion control valve is fitted to
the cold water line to the water heater.
The expansion control valve will discharge the
quantity of water from its drain line during the
heating period instead of the temperature
pressure relief valve as it has a lower pressure
rating.
Valve Operation
Continuous leakage of water from either valve
and its drain line may indicate a problem with the
water heater. Refer to
Relief Valve or Expansion Control Valve
Running”
on page 24.
Warning:
Never block the outlet of either valve or their drain lines for any
reason. A relief valve drain must be left open to atmosphere, and be installed in
a continuously downward direction.
In locations where water pipes are prone to freezing, the relief valve drain line
must be insulated and not exceed 300 mm in length before discharging into a
tundish through an air gap.
lift until water
flows from the
drain line
–
lower gently
drain
line
