INSTALLATION
26
HOT WATER DELIVERY
E5X series
– 50°C Limited Water Heater
An E5X series water heater delivers water not
exceeding 50°C in accordance with AS 3498. The
risk of scald injury will be reduced.
There is no need to fit a temperature limiting
device to satisfy the requirements of the Plumbing
Code of Australia if an E5X series 50°C limited
water heater is installed and serving an
application where 50°C is the maximum
permissible hot water temperature at the outlet of
a fixture or appliance used primarily for personal
hygiene, such as in a bathroom or ensuite.
E6X series
– Hot Water Outlet
This water heater can deliver hot water at a
temperature up to 80°C; sufficiently hot to cause
severe scalding. Water at this temperature 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
water temperature delivery requirements of the Plumbing Code of Australia 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 an E6X series 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.
Two Temperature Zones Using Temperature Limiting Device
Hot Water Outlet
– E6X Series
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.
Temperature Zone
– 50°C Limited Water Heater
E5X Series
