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CONNECTIONS – PLUMBING
GAS INLET
The gas connection is made to the left hand side of the gas control, through the
grommet in the left hand side panel on outdoor models. The pipe work must be
cleared of foreign matter before connection and purged before attempting to
light the water heater. An isolation valve and disconnection union must be
installed to allow servicing and removal of the water heater. Refer to the Gas
Installations Standard AS 5601 for the correct pipe sizing.
Warning: Always isolate the water heater before pressure testing the gas
supply system. Disconnect the water heater after the isolating cock to prevent
the risk of serious damage to the gas control. Warranty does not cover damage
of any nature resulting from failure to observe this precaution. Refer to rating
label for gas types and pressures.
Caution: Care is necessary when tightening fittings into the gas valve. The gas
valve casting may crack if the fittings are over tightened. Cracked valve
castings are not covered under warranty. Damaged valves must be replaced.
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.
RELIEF VALVE
The temperature pressure relief valve is shipped in the carton with the draught
diverter of an indoor model and behind the front cover of an outdoor model.
This valve must be fitted before the water heater is operated. Before fitting the
relief valve, make sure the probe has not been bent. Seal the thread with
Teflon tape - never hemp. Make sure the tape does not hang over the end of
the thread.
Screw the valve into the correct opening
(refer to the installation diagrams on
pages
21
and 22)
leaving the valve outlet pointing downwards. Do not use a
wrench on the valve body - use the spanner flats provided.
24
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