andrews 32/143 Installation Manual, Operation And Service Manual page 34

SECTION 4
STANDARD
RANGE
AUTO IGNITION
MODELS
Fig 23.
COMMISSIONING
Lighting the burner
Gas Control valve
1. Ensure gas supply is on.
2. Set thermostat control knob to the required water temperature. (See below).
3. Ensure time switch if fitted is in the ON position.
4. Move electrical ON/OFF switch to ON and the burner will light.
5. Check pilot and main gas connections at gas control valve using leak detection fluid
whilst burner is alight. Turn OFF, seal any leakages then re-test.
Shutting OFF burner
To shut OFF the burner move switch to OFF then turn 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
APPROX WATER TEMP .
Thermostat Control
Knob
1
104ºF 40ºC 131ºF
34
On/Off Switch
2 3
55ºC 158ºF 70ºC