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The water heater must be located to ensure that the location of the flue terminal
complies with the requirements of AS/NZS 5601.1. As a guide the following
requirements are extracted from the Gas Installations Standard. The distances
are measured along the wall behind the water heater.
•
At least 500 mm between the flue
terminal and the edge of any
opening into the building, such as
an openable door or window,
measured
horizontally*
vertically.
•
At least 500 mm between the flue
terminal and a return wall or
external
corner,
horizontally*.
Note: * If these horizontal distances cannot be achieved, AS/NZS 5601.1 states
an equivalent horizontal distance measured diagonally from the nearest
discharge point of the flue terminal to the opening may be deemed to comply.
Check with the local regulator.
MAINS WATER SUPPLY
Where the mains water supply pressure exceeds that shown in the table below,
an approved pressure limiting valve is required and should be fitted as shown in
the
cold water connection diagram
Model
Temp press relief valve setting
Expansion control valve setting *
Maximum mains supply pressure
With expansion control valve
Without expansion control valve
* Expansion control valve not supplied with the water heater.
TANK WATER SUPPLY
If the water heater is supplied with water from a tank supply and a pressure pump
system is not installed, then the bottom of the supply tank must be at least 1 m
above the highest point of the hot water plumbing system, including the water
heater. Care must be taken to avoid air locks. The cold water line to the water
heater should be adequately sized and fitted with a full flow gate valve or ball
valve.
and
measured
on page 36.
265, 295
1400 kPa
1200 kPa
960 kPa
1120 kPa
29
INSTALLATION
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