INSTALLATION – WATER HEATER
15
MAINS WATER SUPPLY
Where the mains water supply pressure exceeds that shown in the table below, an approved pressure limiting
valve that does not have non-return valve characteristics (such as an RMC PSL series valve) is required and
should be fitted as shown in the installation diagram (
refer to page
20).
Model
012
016
Relief valve setting
1000 kPa
1000 kPa
Max. mains supply pressure
800 kPa
800 kPa
Min. mains supply working pressure *
120 kPa
140 kPa
* minimum water supply working pressure required to achieve the rated flow
and performance
Notes:
It is not recommended to install this water heater with a low pressure water supply.
A minimum water supply working pressure of 140 kPa for 016 models and 120 kPa is required for
012 models, i.e. whilst water is flowing through the water heater, is required to achieve the rated flow and
performance of the water heater.
If sludge or foreign matter is present in the water supply, it is recommended a suitable filter be incorporated
in the cold water line to the water heater.
This water heater is not suitable for connection to bore water or spring water unless a water treatment
device is fitted.
Refer to
“Water Supplies”
on page 10 for further information on water chemistry.
