Technical data

Table Of Contents
25
CONNECTIONS PLUMBING
All plumbing work must be carried out by a qualified person and in compliance with the Standard
AS/NZS 3500.4 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.
CONNECTION SIZES
Hot water connection: Rp .
Cold water connection: Rp .
Relief valve connection: Rp 3/4.
Gas inlet: Rp 1/2.
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 fittings.
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 or on page 30 for
multiple installations. Refer also to “Hot Water Delivery” on
page 19 and to “Mains Water Supply” on page 18.
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.
This water heater has either a plastic dip tube or fitting
liner in the inlet and outlet fittings (see diagram). These
must be in place for the water heater to function properly.
Do not remove or damage them by using heat nearby.
They will be pushed into the correct position as the fitting
is screwed in.
PIPE SIZES
The cold water pipe to the water heater should be the same size or bigger than the hot water line from the
water heater.
The pipe sizing for hot water supply systems should be carried out by persons competent to do so, choosing
the most suitable pipe size for each individual application. Reference to the technical specifications of the
water heater and local regulatory authority requirements must be made.
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