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

4 Commissioning
4.4

HIflo Range Auto ignition models

Fig. 28
Gas control
knob
A
40
4.4.1
1. Ensure gas supply is ON.
2. Turn gas control knob to ON position.
3. Using control thermostat, select required water temperature.
B
4. Move electrical ON/OFF switch to ON. After a delay of about
10 seconds, 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.
4.4.2
For long periods only, (7 days or more) move electrical ON/OFF
switch to OFF, then turn gas control knob to OFF. Turn off gas
Pink MV
service cock. For shorter periods, leave heater under thermostat
Black PV-MV
control.
Purple PV
4.4.3
1. Turn gas control knob to OFF.
2. Release bleed screw A and connect pressure gauge tube.
3. Light burner as described previously.
4. Remove valve cap from port B and adjust pressure using
exposed screw in accordance with data plate.
5. Turn screw clockwise to increase pressure and
counterclockwise to decrease.
6. Turn gas control to PILOT. Remove pressure gauge tube
and tighten bleed screw A.
7. Turn gas control knob to ON and light burner as described
above.

Lighting the burner

Shutting off the burner

Checking main burner pressure
See
If possible, check gas rate (see Technical Data) with
meter and watch. Refit valve cap to port B.
Issue 2 14/07/16