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INSTALLATION
HOT WATER DELIVERY
This water heater can deliver hot water at temperatures up to 80°C for an
050 model and up to 75°C for 080 to 315 models, sufficiently hot to cause severe
scalding. Water at these temperatures may be plumbed to fixtures where water
hotter than 50°C is allowed, such as the kitchen and laundry, after ensuring all
pipe work, fixtures and fittings are suitable for at least 80°C.
The installing plumber may have a legal obligation to ensure the installation of
this water heater meets the delivery water temperature requirements of the
Plumbing Code of Australia so that scalding water temperatures are not delivered
to a bathroom, ensuite or other ablution or public area.
It is necessary and we recommend that a temperature limiting device be fitted
between the water heater and the hot water outlets in any ablution and public
areas such as a bathroom, ensuite or public amenities, to reduce the risk of
scalding.
Where a temperature limiting device is installed adjacent to the water heater, the
cold water line to the temperature limiting device can be branched off the cold
water line either before or after the isolation valve, pressure limiting valve and
non-return valve to the water heater. If an expansion control valve is required, it
must always be installed after the non-return valve and be the last valve prior to
the water heater.
If a pressure limiting valve is installed on the cold water line to the water heater
and the cold water line to a temperature limiting device branches off before this
valve or from another cold water line in the premises, then a pressure limiting
valve of an equal pressure setting may be required prior to the temperature
limiting device.
Two Temperature Zones Using a Temperature Limiting Device
29
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