42
CONNECTIONS – PLUMBING
All plumbing work must be carried out by a qualified person and in accordance with the Standard
AS/NZS 3500.4 and all local codes and regulatory authority requirements.
CONNECTION SIZES
•
Hot water connection:
Rp 3/4
•
Cold water connection:
Rp 3/4
•
Relief valve connection:
Rp 1/2
WATER INLET AND OUTLET
The 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 threaded joints.
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
page 38.
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.
This water heater is intended to be permanently connected to the water mains and
not connected by a hose-set. A braided flexible hose or semi-flexible connector
may be used for connection to the water heater, where permitted by
AS/NZS 3500.4.
PIPE SIZES
To achieve true mains pressure operation, the cold water line 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.
CONDENSATE DRAIN
A condensate drain line is supplied fitted to the water heater. Check the fitting of this drain line is secure upon
the installation of the water heater.
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