COMMISSIONING
SECTION 4
GAS
CONNECTIONS
TO LIGHT
THE BURNER
TO SHUT OFF
THE BURNER
TO CHECK
MAIN BURNER
PRESSURE
14
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 cock after all connections to the gas control thermostat are
complete, and test all connections with soap solution.
1. Remove outer cover wait 3 minutes for any unburnt gas to vent.
2. Turn the gas control knob to pilot. (see below)
3. Fully depress the gas control knob and the piezo ingnitor. With the pilot burner alight,
hold the gas control knob for 20 seconds. When the gas control knob is released the
pilot should remain lit, if not repeat the operation. The pilot can be seen through the
sight glass on the inner cover.
4. Replace outer cover.
5. Set the temperature indication dial to the required temperature. (see below)
6. Turn the gas control knob to ON, the burner should now light, if not repeat the
operation. (see below)
For long periods only, eg. holidays or periods of 7 days or more, turn the gas control
knob to ‘PILOT’ position, depress slightly and turn clockwise to ‘OFF’. Turn off the gas
service cock.
For shorter periods, eg. less than 7 days, leave the heater under the control of the
thermostat.
N.B. If the pilot should become extinguished for any reason, turn off the appliance, and
wait three minutes before attempting to relight.
1. Turn burner OFF as above.
2. Remove brass cap from burner adjustment port. (see below).
3. Release bleed screw A one turn and connect pressure gauge tube.
4. Light burner according to the preceding instructions.
5. Adjust burner pressure at screw B in accordance with data plate.
Turn screw clockwise to increase pressure and anticlockwise to decrease pressure.
6. Turn burner OFF. Remove pressure gauge tube and tighten screw A.
7. Replace brass cap in burner pressure adjustment port. (see below).
Thermostat
Setting
104°F
40°C
125°F
52°C
143°F
62°C
159°F
71°C
Approx. Water
Temperature
Correct size and shape
of the pilot flame
OFF :
PILOT :
ON :
Fig.7
Lighting Instructions
Note European Symbols:
30 mm
0
1
2
3
Fig. 8
Burner Pressure
Adjustment
B
A
