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All plumbing work must be carried out by a qualified person and in accordance with the requirements of either
AS/NZS 3500.4 or AS/NZS 3500.5:2012 Section 3 (for a Class 1a or Class 10 building) as applicable under
the Plumbing Code of Australia, and all local codes and regulatory authority requirements.
All gas work must be carried out by a qualified person and in compliance with the Standard AS 5601 or
AS/NZS 5601.1, as applicable under local regulations, and all local codes and regulatory authority
requirements.
Warning: Certain types of plastic pipe, such as polybutylene pipe, are not suitable to be used as a hot
water pipe between:
this water heater and a temperature limiting device, and
this water heater and a hot water outlet if a temperature limiting device is not installed.
This water heater can produce water at a temperature and pressure which can exceed the performance limits
of these types of pipe. This may result in pipe failure leading to severe water damage to the property. If one of
these types of plastic pipe is used as a hot water pipe in the property, then a temperature limiting device must
be installed between the water heater and this pipe work.
Note: The solar storage tank of a solar water heater should not be installed as part of a circulated hot water
flow and return system in a building. The benefits of solar gain will be significantly reduced. If a circulated flow
and return system is required, refer to
CONNECTION SIZES
Hot water connection to in-series gas booster: R 3/4.
Solar heated water connection to in-series gas booster: R 3/4.
Solar heated water connection to solar storage tank: Rp 3/4.
Cold water connection: Rp 3/4.
Solar hot (from collector) connection: DN15 compression fitting.
Solar cold (to collector) connection: DN15 compression fitting.
Temperature Pressure Relief valve connection: Rp 1/2.
Solar circuit pressure relief valve connection: R 1/2.
Gas connection: R 3/4.
WATER INLET AND OUTLETS
All pipe work must be cleared of foreign matter before
connection and purged before attempting to operate the
water heater. All olive compression fittings must use brass
or copper olives. Use an approved thread sealant such as
Teflon tape on all sealing threads. Conetite or O-ring fittings
do not require a thread sealant.
An isolation valve and non-return valve must be installed on
the cold water line to the water heater. An acceptable
arrangement is shown in the diagram. Refer also to
Water Delivery"
on page 26 and to
page 24.
A disconnection union must always be provided at the cold water inlet and hot water outlet on the water heater
to allow for disconnection of the water heater.
CONNECTIONS – PLUMBING
"Circulated Hot Water Flow and Return System"
"Mains Water Supply"
39
"Hot
on
on page 27.
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