COMMISSIONING
75
Notes:
If the burners extinguish and error code 11 or 12 starts to flash on the LED display:
release the MIN and adjuster buttons
close the hot tap
clear the error code (refer to “Clearing Error Code” on page 75)
recommence the procedure from Step 8.
If the adjuster button is released before Step 13, clear any error code (if displayed) and recommence the
procedure from Step 8.
Maximum test point gas pressure
Refer to the rating label on the water heater for the maximum test point gas pressure.
Follow Steps 8 to 14 of the “Minimum test point gas pressure” procedure
on page 74, but open the hot tap fully and use the MAX button instead of
the MIN button. It may be necessary to open two or three hot taps fully,
depending upon the model of water heater and the incoming cold water
temperature.
Note: In Step 9, “3H” (27 models) will be shown on the LED display.
After setting the minimum and maximum test point gas pressures:
Close the hot tap.
Remove the manometer and refit and tighten the test point screw and washer.
Open a hot tap again so the burners ignite.
Test for gas leaks.
Close the hot tap.
Turn off the controller, if one is fitted, by pressing the on / off ( ) button
Switch off the electrical supply at the power outlet to the water heater
Refit the front panel and screws to the water heater.
Clearing Error Code
If an error code does appear on the LED display during the commissioning process, it will be necessary to
clear the error in order to complete the installation.
To clear an error code:
switch off the electrical supply at the power outlet to the water heater
check the gas isolation valve at the gas inlet to the water heater is fully open
wait five (5) minutes
switch on the electrical supply at the power outlet to the water heater
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