34
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.
Check the status of the LEDs if an external control device has been installed.
When the power is turned on, the water heater will enter the Initialisation mode.
The green, yellow and red LEDs will flash in an undefined sequence for up to sixty (60) seconds,
which will include different types of flashes and may include short periods where the LEDs remain
all on or all off.
The blue LED will extra fast flash.
The water heater will then enter Maintenance mode.
The green LED will display 2 x standard flashes with an interval during Maintenance mode.
The blue LED will extra fast flash.
Notes:
Refer to
on page 9 for further information on the LED operation and definitions of flash
speeds.
After the Initialisation mode, if either all LEDs simultaneously go out or simultaneously turn solid, or there
is a solid yellow LED or flashing red and yellow LEDs simultaneously, this indicates there may be a fault
with the water heater. Refer to
on page 20, in the Save A Service Call section of this
Owner’s Guide and Installation Instruction.
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.