
Supplied By www.heating spares.co Tel. 0161 620 6677
35
221473B
4.1 Fan
Disconnect the two electrical connectors at the fan, see diagram
4.1. It is not necessary to disconnect the green and yellow earth
cable.
Remove the two flexible tubes from the fan.
Remove the air box access plate, refer to Section 10.2 in the
Installation Instructions.
When replacing the tubes from the air pressure switch ensure
the lower (red) tube from the fan connects to the lower connection
of the switch.
Slacken the clamp securing the flue elbow to the fan.
Remove the fan, secured with two screws at the front and gently
ease the fan from the flue elbow and rear bracket.
To fit the fan, locate it into the rear bracket and ease the flue
elbow onto the fan outlet and secure with the two screws, see
diagram 4.1.
The polarity of the two electrical connectors is not important.
4.2 Main Burner
Remove the inner case as Section 1.5.
Slacken the two screws securing the flue collector, see diagram
4.2.
Remove the combustion chamber front panel, secured with four
screws, see diagram 4.3.
Remove the burner support bracket wing nut and securing
screw, see diagram 4.2
Remove the spark electrode assembly from the burner, secured
by 2 screws, see diagram 4.3 and carefully lay it down in the
combustion chamber.
NOTE: The sensing lead is connected to the burner. Disconnect
the lead when the burner is being removed.
Remove the main burner from the main injector at the rear.
Raise the burner up and forwards. Take care not to damage the
combustion chamber insulation.
Remove the sensing electrode and fit to new burner.
Make sure the sensing lead is reconnected and the main burner
is fitted correctly on assembly, located on the main injector and
horizontal, the tips of the rearmost blade under the two burner
guides, see diagram 4.2A.
Locate the combustion chamber front panel under the front
edge of the flue hood on assembly, then secure all screws and
wing nut.
4.3 Main Injector
Remove the main burner, refer to Section 4.2.
Unscrew the main injector.
When fitting the main injector, fit the new sealing washer,
supplied, to ensure gas soundness.
4.4 Spark Electrode
Remove the inner case as Section 1.5.
Slacken the two screws securing the flue collector, see diagram
4.2.
Remove the combustion chamber front panel, secured with four
screws.
Remove the spark and earth electrode assembly leads and
silicone tubes, securing nuts and washers
Diagram 4.1
Diagram 4.2
6959
6958
FLUE ELBOW
(Exercise caution when
handling this component)
ELECTRICAL
CONNECTORS
SECURING
SCREWS (2)
REAR BRACKET
4 Replacement of Parts
FLUE
COLLECTOR
WINGNUT
SECURING
SCREWS (2)
SCREW (4)
COMBUSTION
CHAMBER
FRONT PANEL
BURNER SUPPORT BRACKET
SECURING SCREW
FLUE
COLLECTOR
SECURING
SCREW (2)