AquaMAX EM50 Series - Manual (Page 24)

23
Two Temperature Zones Using a Temperature Limiting Device
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 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 the cold
supply branch to the TLD is connected downstream of the water heater
non-return valve then we recommend that copper pipe or suitable high
temperature plastic pipe be used. This pipe work may be subject to high
water temperature and high water pressure. 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.
Refer to the plumbing diagram “Two Temperature Zones Using a
Temperature Limiting Device” on page 23.