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All plumbing work must be carried out by a qualified person and in accordance with the requirements of the
Plumbing Code of Australia (PCA) and the Plumbing Standard AS/NZS 3500.4, and all local codes and
regulatory authority requirements. In New Zealand, the installation must conform with Clause G12 of the New
Zealand Building Code.
Pipe work that is required to enter the house either through a wall, ceiling cavity or roof needs to be fully sealed
and weatherproofed and must comply with local building codes and practices.
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.
If there is a separate higher temperature hot water line to a non-ablution area or a tempering valve is not
required, then a primary temperature control valve can be installed if a 75°C or greater delivery temperature is
considered by a consumer to be too high for their needs or the plumbing materials used in the heated water
system are not rated to carry 75°C or higher water temperature.
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:
•
Cold water connection:
•
Relief valve connection:
WATER INLET AND OUTLET
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 thread sealing tape or
approved thread sealant on all sealing threads other
than a fitting with an O'ring seal.
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
on page
63 for multiple installations. Refer also to
Water Delivery"
on page 29 and to
Supply"
on page 28.
An expansion control valve is supplied in the parts kit supplied with the water heater.
The cold water isolation valve and expansion control valve must be accessible from ground or floor level to
enable homeowner operation without the need for a ladder. They must not be installed either on the roof or in
the ceiling space unless it is an accessible trafficable area. Extend the cold water line to the cold water inlet
fitting on the shoulder of the solar cold pipe for an open circuit model and to the cold water inlet fitting on the
solar storage tank for a closed circuit model.
CONNECTIONS – PLUMBING
"Circulated Hot Water Flow and Return System"
52L series system
DN15 copper tube to DN15 olive
compression fitting on TPR valve
DN15 copper tube to DN15 olive
compression fitting on solar cold
pipe
Rp 1/2
and
"Hot
"Mains Water
56
on page 30.
52H series system
DN15 copper tube to DN15 olive
compression fitting on TPR valve
DN15 copper tube to R3/4 x DN15
olive union
Rp 1/2
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