15
Installation Instructions
Supply water piping
• Do not use PVC, iron, or any piping which has
been treated with chromates, boiler seal or other
chemicals.
• Pipe sizing from the cold water supply should be
sized according to local BY LAWS for water supply.
• If sludge or foreign matter is present in the water
supply it is recommended that a separate filter/
strainer be fitted to the cold water supply line.
• A GATE VALVE OR BALL VALVE must be used
on the cold water inlet to the water heater. THIS
REQUIREMENT IS AN AUSTRALIA WIDE RE-
Q U I R E M E N T U N D E R T H E N A T I O N A L
PLUMBING CODE.
STOP TAPS OR COMBINATION STOP TAPS
AND NON-RETURN VALVES ARE NOT TO
BE USED.
• In order for the client to use the water heater
comfortably, 200 to 1000 kPa of pressure is
needed from the water supply.
Be sure to check the water pressure. If the water
pressure is low, the water heater cannot perform
to its full capability, and may become a source of
trouble for the client.
Drain processing
• Expansion water may drop from the pressure
relief valve and wet the floor.
Hot water piping
• Do not use lead, PVC, iron or any piping which
has been treated with chromates, boiler seal or
other chemicals.
• Keep the pipe lengths to a minimum, and make
sure that the pipework is well insulated as correct
performance of the appliance is dependent on
properly insulated pipework.
• DO NOT FIT ANY VALVES OR RESTRICTORS
TO THE OUTLET OF THE WATER HEATER.
• DO NOT FIT ANY OBSTRUCTION TO THE
PRESSURE RELIEF LOCATED ON THE HOT
WATER OUTLET CONNECTION.
• Use mixing valves with low water resistance. Use
shower heads with low pressure loss.
• If necessary, use a pump or other means to en-
sure that the supply water pressure to the inlet of
the heater does not fall below 199kPa when the
maximum amount of water is being demanded.
Also install a pressure meter on the inlet. If this is
not done, local boiling will occur inside the water
heater causing abnormal sounds and decreasing
the durability of the heat exchanger.
After purging the air from the system using the hot water supply taps, remove the water inlet strainer
located on the cold water supply inlet connection. Remove any debris from the filter and replace.
When replacing the filter, do not over-tighten the “O” ring seal.
It is recommended that for sanitary fixtures use primarily for the purpose of personal hygiene,
that a temperature control device be fitted (such as a tempering valve) as per AS3498.
No pressure reduction valve is required unless the water pressure exceeds 1000 kPa.
