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INSTALLATION – SOLAR STORAGE TANK
HOT WATER DELIVERY
This water heater can deliver water at temperatures which can cause scalding.
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 area such as a bathroom or ensuite, to reduce the risk of
scalding. The installing plumber may have a legal obligation to ensure the installation of this water
heater meets the delivery water temperature requirements of AS/NZS 3500.4 so that scalding water
temperatures are not delivered to a bathroom, ensuite or other ablution area.
Where a temperature limiting device is installed adjacent to the solar 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 and pressure limiting valve to the solar storage tank, but it
MUST BE before the non
return valve. 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 solar storage tank.
Warning: A non return valve MUST BE installed on the cold water line to the solar storage tank
AFTER the cold water branch to a temperature limiting device.
If a combination isolation valve and non return valve (duo or trio valve) is installed on the cold water line
to the solar water heater and the cold water line to the temperature limiting device branches off after
this valve, then a second non return valve must be installed between the cold water branch and the
solar storage tank.
If a pressure limiting valve is installed on the cold water line to the solar 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
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