COMMISSIONING
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Note:
If this water heater is installed as part of a multiple installation, i.e. in a bank of water heaters, it
will be necessary to isolate the other water heaters and commission the water heaters one at a time.
However, all the water heaters will need to be operating during the checking of the gas pressure.
TO TURN ON THE WATER HEATER
•
Open all of the hot taps in the house (don’t forget the shower).
•
Open the cold water isolation valve fully at the inlet to the solar water heater.
•
Open the solar preheat water isolation valve fully at the inlet to the booster 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 gas isolation valve fully.
•
Check the gas pipe work for leaks.
•
Plug in the water heater at the power outlet and switch on the electrical supply.
•
Open a hot tap.
The water heater will operate automatically.
•
Check to ensure the flow from each connected hot tap is sufficient to operate the water heater.
The minimum operating flow rate for all models is 3.0 litres per minute.
The automatic water governor incorporated in the water heater is not adjustable.
Explain to the householder or a responsible officer the functions and operation of the water heater and
the solar water heater system.
Warning:
Upon completion of the installation and commissioning of the water heater, leave this
guide with the householder or a responsible officer.
DO NOT
leave this guide inside of the cover of the
water heater, as it may interfere with the safe operation of the water heater or ignite when the water
heater is turned on.
GAS INLET PRESSURE
IMPORTANT - CHECK
the gas supply pressure at the inlet to the water heater with the water heater
and all other gas burning appliances in the premises operating (burners alight). The minimum gas
supply pressure is:
Natural Gas
1.13 kPa
Propane
2.75 kPa
Universal LPG
2.75 kPa
If this minimum cannot be achieved, it may indicate the meter or the gas line to the water heater is
undersized. It is important to ensure that an adequate gas supply pressure is available to the water
heater when other gas burning appliances, on the same gas supply, are operating.