67
COMMISSIONING
All water heaters are tested and adjusted before dispatch from the factory, however further
adjustments may become necessary because of local conditions.
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 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.
•
Turn on a controller, if one is fitted, by pressing the on / off button.
The light in the on / off button and the priority light (standard controller) or ACTIVE light (Deluxe
controller) will both glow.
•
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.
•
Check and if required adjust the pre-set outlet temperature setting of the water heater.
Refer to “Pre-set Outlet Temperature Setting” on page 71.
The automatic water governor incorporated in the water heater is not adjustable.
To complete the installation, it is necessary to check the gas supply pressure at the inlet to the
water heater (refer to “Gas Inlet Pressure” on page 67), the minimum test point pressure and the
maximum test point pressure (refer to “Burner Gas Pressure” on page 69).
Upon completion and testing of the installation, ensure the controller(s) is turned off (if fitted).
Explain to the householder or a responsible officer the functions and operation of the water heater
and the controllers (if fitted).
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
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.
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