Standard Range Auto Ignition Models; Lighting The Burner; Shutting Off The Burner; Checking Mains Burner Pressure - andrews 24/39 Installation And Service Manual

4.3

Standard Range Auto ignition models

Fig. 26
Thermostat control
knob
Gas control valve
Fig. 27
A
Issue 2 14/07/16
4.3.1
1. Ensure gas supply is on.
2. Set thermostat control knob to the required water
temperature. (See below).
On/off switch
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.
4.3.2
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.
Setting
Approx. Water
Temperature
4.3.3
1. Turn gas supply OFF.
2. Release bleed screw A and connect pressure gauge tube
(See Fig. 26)
3. Light burner as described previously.
4. Remove cap from port B and adjust pressure using exposed
screw in accordance with data plate (See Fig. 26)
5. Shut OFF burner as described previously. Remove pressure
gauge tube and tighten bleed screw A.
6. Re-light burner as described previously.
B

Lighting the burner

Shutting off the burner

1 2
40°C 55°C 70°C
Checking main burner pressure
Commissioning 4
3
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