8. CONTROL AND PRESSURE CHECKS
8.1 Check control settings.
1.
If closed, open the isolating valve at the inlet ‘T’ connector.
2.
To help in checking the control positions while the fascia is detached, place the
control bezel over the gas tap spindle and against the tap bracket. Temporarily secure
to the tap bracket with one of the screws.
3.
Fit the control knob over the gas tap spindle.
4.
Depress the control knob and turn anticlockwise partially towards the 1/IGN
position until some resistance is felt. Keep depressed at this position to purge air from
the system then, while keeping it depressed, turn SLOWLY fully to the 1/IGN position.
A spark should be generated at the pilot while turning. The spark should ignite the
pilot.
5.
When pilot ignition has been achieved, keep the control knob depressed for
approximately ten seconds to allow the thermocouple probe to warm up and then
release it. If the pilot does not remain alight, ensure that the air has been purged, that
the pilot orifice is clear and that the thermocouple connections are sound. Replace
the pilot unit if necessary (see servicing section of this manual).
6.
Check all the control settings. These are:-
8.2 Flame supervision and spillage monitoring system.
The pilot unit incorporates a system which will automatically shut off the gas supply if
the pilot flame goes out or if there is insufficient oxygen due to spillage or lack of
ventilation.
Check that the system operates properly as follows;
Light the appliance. Set at position 4 and leave for one minute.
Turn back to "OFF" to extinguish the pilot. Note the time when the pilot goes out.
Listen for a snap sound at the gas tap. Note the time when the sound is heard. This
sound is caused by an electromagnetic valve shutting off the gas supply through the
tap. The valve is located in the body of the tap. The valve should operate within 60
seconds of the pilot going out. If the valve does not operate within this time limit do
not allow the appliance to be used until the fault has been corrected.
This monitoring system must not be adjusted, bypassed or put out of operation.
This monitoring system must only be exchanged using Valor Fires authorised parts.
Page 22
INSTALLER GUIDE
©
Baxi Heating U.K. Limited 2010.
Control Knob
Position
Burner appearance
1 / IGN
Centre section on low. Outer sections off.
2
Centre section fully on. Outer sections off.
3
Centre section fully on. Outer sections on low.
4
All sections fully on.
