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0020003579A
10 Replacement of Parts
Diagram 10.6
10.5 Solenoid
Remove front panel to gain access, see section 6.8.
Remove the electrical plug from the multifunctional control and
remove the securing screw and then the solenoid assembly,
see diagram 10.4.
10.6 Burner
Refer to the relevant paragraphs of Section 8 servicing to
remove the burner from combustion chamber.
10.7 Injector
Refer to the relevant paragraphs of Section 8 servicing to
remove the burner from combustion chamber.
The injector can then be unscrewed from the manifold.
When replacing use a little jointing compound on the external
thread only, to ensure a gas tight seal.
10.8 Air Pressure Switch
Refer to the relevant paragraphs of Section 8 servicing to
remove the burner from combustion chamber.
Remove the air pressure tubes and electrical connections from
the switch, release the securing screws and remove the switch,
see diagram 10.5.
When fitting the replacement make sure that the air pressure
tubes are fitted with the clear tube from the air pressure switch
to the front fan connection, as shown in diagram 10.5 and the
electrical connections are made as shown in wiring diagram
9.4.
10.9 Fan
Refer to the relevant paragraphs of Section 8 servicing to
remove the burner from combustion chamber.
Remove the electrical connections and air pressure tubes from
the fan.
NOTE:
Remove the electrical connections by pulling insulation
boots only.
Withdraw fan and flue hood assembly from boiler by taking hold
of fan, lifting slightly up and remove, see diagram 8.7.
Undo the screw securing the fan to the flue hood and disengage
fan from flue hood.
When re-assembling, make sure that the air pressure tubes are
fitted as before and that the fan duct engages fully into the flue
duct extension piece.
The polarity of the electrical connections is not important.
Diagram 10.5
11829
AIR PRESSURE
SWITCH
ELECTRICAL
CONNECTIONS
AIR
PRESSURE
SWITCH
REAR AIR
PRESSURE SWITCH
TUBE (RED)
FRONT AIR
PRESSURE
SWITCH
TUBE (CLEAR)
10.10 Insulation
Refer to the relevant paragraphs of Section 8 servicing to
remove the burner from combustion chamber.
Sides
Undo the burner support bracket nuts and remove support
bracket and insulation, see diagram 10.6.
Refit support bracket with new side insulation.
Rear
Bend forward rear insulation securing nibs, one on each side, to
release insulation.
Fit new insulation and bend back securing nibs.
Diagram 10.4
REAR
INSULATION
PANEL
SIDE INSULATION
BURNER SUPPORT
BRACKET
NUTS
12108
GAS
SERVICE
COCK
UNION
ELECTRICAL
PLUG
LONG
SCREWS
(2)
SOLENOID
ASSEMBLY
SECURING
SCREW
12167
SOLENOID
SECURING
SCREW
SHORT
SCREWS
(2)