COMMISSIONING
SECTION 4
16
Fig 8.
1. Set thermostat temperature dial to the desired position. Remove the thermostat cover
on the right hand side of the gas control valve. The thermostat can now be adjusted
to the required temperature. (See above). Replace thermostat cover.
Note: Before adjusting thermostat ensure electrical supply is switched off.
2. Ensure gas supply is on.
3. Ensure electrical supply is on.
4. Ensure time switch, if fitted is in the on position.
5. If the burner does not light the red alarm lamp will illuminate on the gas control
panel. Wait a few seconds and press the reset button (See fig 9). The burner
should now light.
Shutting off burner
To shut off the burner isolate the electrical supply, then shut off the gas service cock.
The water heater should only be turned OFF for long periods, eg holidays, or in an
emergency. Otherwise the heater should be left to operate under normal thermostat
control.
NB. When using a time control ensure the heater is not turned OFF before the final
water draw off occurs. This will ensure the water in the tank is left in a hot condition.
Thermostat Setting
LOW
HOT
VERY HOT
Approx Water Temperature
108ºF
42ºC
130ºF
54ºC
156ºF
69ºC
CAUTION:
DO NOT OPERATE THE WATER HEATER UNTIL THE STORAGE VESSEL IS
COMPLETELY FILLED WITH WATER, WITH WATER RUNNING FROM ALL HOT TAPS.
Open the main gas supply valve after all connections to the gas control valve are
complete, and test all connections with soap solution.
Lighting the burner
Temperature
Dial
VERY
HOT
LOW
HOT
RESET
