40
COMMISSIONING
TO FILL AND TURN ON THE WATER HEATER
The power supply to the water heater must not be switched on until the solar storage tank is filled with
water.
To fill the solar storage tank with water and turn on the water heater:
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.
Open the isolation valve in the pipe work between the outlet of the heat exchanger and the solar pump,
located behind the lower front cover of the solar storage tank (refer to step 4 of “Commissioning the Solar
Circuit” on page 43).
Plug in the water heater at the power outlet.
Commission the solar circuit (refer to Solar Circuit on page 41).
Switch on the electrical supply at the power outlet to the water heater.
The power outlet must be switched on for the solar controls to operate and solar gain to be achieved.
Refer to the Owner’s Guide and Installation Instructions supplied with the in-series booster for the
commissioning procedure of the water heater.
Check and if required adjust the preset outlet temperature or thermostat setting of the in-series booster.
Explain to the householder or a responsible officer the functions and operation of the solar water heater. Upon
completion of the installation and commissioning of the water heater, leave this guide with the householder or
a responsible officer.
PRESET OUTLET TEMPERATURE SETTING
Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in
potable water. If this water heater is installed with an continuous flow in-series gas booster, then this
requirement of AS 3498 can be satisfied provided the booster is energised, its preset outlet temperature setting
is 70°C or higher and a remote temperature controller is not used.
If this water heater is installed with an in-series storage booster, then this requirement of AS 3498 can be
satisfied provided the storage booster is energised and its thermostat setting is 60°C or higher.
It will be necessary to check and if required to adjust the preset outlet temperature setting of the continuous
flow water heater or the thermostat setting of a storage water heater when it is installed as an in-series booster
to a solar water heater or if it is an existing water heater and a solar water heater is then installed.
Refer to the Owner’s Guide and Installation Instructions supplied with the continuous flow in-series gas booster
for the procedure to check and adjust the preset outlet temperature if required.
Refer to the Owner’s Guide and Installation Instructions supplied with the in-series storage booster for the
procedure to check and adjust the thermostat setting if required.
Note: Consideration must be given to the delivery temperature to any ablution and public areas such as a
bathroom, ensuite or public amenities. Refer to “Hot Water Delivery” on page 21 and to the schematics of “Two
Temperature Zones Using A Temperature Limiting Device” on page 21.
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