33
COMMISSIONING
TO FILL AND TURN ON THE WATER HEATER
The power supply to the water heater must not be switched on until the
water heater is filled with water
and a satisfactory megger reading is
obtained.
Open all of the hot water taps in the house (don’t forget the shower).
Open the cold water isolation valve fully on the cold water line to the water
heater.
Air will be forced out of the taps.
Close each tap as water flows freely from it.
Check the pipe work for leaks.
Switch on the electrical supply at the isolating switch to the water heater.
Explain to the householder or a responsible officer the functions and operation
of the water heater. Upon completion of the installation and commissioning of
the water heater, leave this guide with the householder or a responsible officer.
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater on completion of the installation,
such as on a building site or where the premises is vacant, then;
Switch off the electrical supply at the isolating switch to the water heater.
Close the cold water isolation valve at the inlet to the water heater.
