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!
Release the “on” switch. The fan should continue to run.
!
Depress the control knob and turn anticlockwise partially towards the “PILOT/IGN”
position until some resistance is felt. Keep depressed at this position to purge air from
the system then, while keeping it depressed, turn fully to the “PILOT/IGN” position. A
spark should be generated at the pilot while turning. The spark should ignite the pilot.
!
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).
!
When the pilot is alight and stable, partially depress the knob and turn to “LOW”.
The pilot should then light the main burner at its low setting. There may be a slight
delay between the pilot lighting and ignition of the gas at the main burner. This is
normal and is due to the time required to fill the main burner compartment with
sufficient gas for ignition.
!
With the burner at “LOW”, partially depress the control knob and gradually turn it
anti-clockwise. The burner flames should gradually increase until the knob reaches the
“HIGH” position.
When the above checks have been completed partially depress the
control knob and turn to “OFF” position.
!
Press the “off” switch. The fan should stop and the indicator light should come on.
!
If the above checks are satisfactory, continue with the installation. If not, check the
control and ignition circuitry and components as described in the servicing section of
this manual.
9.3 Check reference pressure .
The appliance is pre-set to give the correct setting pressure as shown in part 1 of this
manual. No adjustment is necessary. Check the burner pressure by fitting a pressure
gauge at the test point. The test point is on the pipe situated below the bottom right
corner of the burner unit (See figure 34).
Check the pressure with the fan on, the
appliance alight and set at maximum input.
After checking, turn off the appliance.
Remove the pressure gauge and replace the
test point sealing screw. Relight the appliance.
Turn to the maximum input position and test
around the sealing screw for gas soundness
with a suitable leak detection fluid.
Do not
use leak detection sprays on this appliance.
Sprays may affect the operation of electrical
components. Keep all liquid detection fluids clear of electrical components.
Figure 34.
INSTALLER GUIDE
