35
12.0 CHANGING COMPONENTS
12.3
Fan
(Fig. 48)
1. Undo the nut on the gas inlet pipe to the venturi
(Fig. 49) and pull the sensing pipe off the fan.
2. Disconnect the electrode leads, noting their position
and disconnect the fan electrical plugs.
3. Undo the screws securing the collector to the
extension piece.
4. Remove the collector and fan assembly, being
careful to retain the injector in the venturi.
5. Undo the screws securing the fan to the venturi and
fit the new fan, replacing the seal if necessary.
6. Examine the burner gasket and replace if
necessary.
7. Reassemble in reverse order, ensuring that the
injector is in place and the sensing pipe is connected
to the fan.
12.4
Venturi
(Fig. 48)
1. Remove the collector and fan assembly as
described in section 12.3.
2. Extract the injector from the venturi.
3. Undo the screws securing the fan to the venturi and
the venturi to the collector.
IMPORTANT:
When fitting the new venturi, ensure
the arrows on it’s base point into the collector
(Fig. 50).
4. Examine the seals and burner gasket, replace if
necessary.
5. Reassemble in reverse order, ensuring that the
injector is in place.
12.5
Injector
(Fig. 48)
1. Remove the collector and fan assembly as
described in section 12.3.
2. Extract and replace the injector and reassemble in
reverse order.
Cover
Gas Inlet
Fan
Venturi
Injector
Collector
When fitting the venturi
ensure that the arrow is
pointing forward
Fig. 48
Fig. 49
Gas Inlet Pipe
Venturi
Injector
Fig. 50
Publication No. 5116282