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INSTALLATION
HOT WATER DELIVERY
This water heater can deliver hot water at temperatures up to 65°C, 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.
The installing plumber may have a legal obligation to ensure the installation of
this water heater meets the water temperature delivery requirements of the
Plumbing Code of Australia and New Zealand Building Code Clause G12 so that
heated water delivered to fixtures and appliances used primarily for personal
hygiene is at a temperature which is unlikely to scald.
It is necessary and we recommend that a temperature limiting device be fitted
between the water heater and the fixtures and appliances used primarily for
personal hygiene such as in a bathroom, ensuite, public amenities or other
ablution areas, 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
31
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