Sprays may affect the operation of electrical components. Keep all liquid detection
fluids clear of electrical components.
A long brush may be required to reach some
joints.
9.2 Preliminary burner checks.
Some burner operations can be checked at this stage. Checking now will mean that less
disassembly will be required if any problems are found.
A full check should still be
made, however, after final installation.
!
Switch on electrical power supply to the appliance.
!
If closed, open the isolating valve at the inlet ‘T’ connector.
!
Press the “on” switch. Within a few seconds, the fan motor will start and the neon
indicator will light. The neon light is an indication that the fan is in ‘boost’ mode.
!
After a few seconds the fan motor should reduce in speed and be operating at
‘normal’ speed. The neon indicator will no longer be illuminated.
!
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.
!
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.
Page 28
INSTALLER GUIDE
