Fan - Worcester GREENSTAR 24i Junior Installation Instructions Manual

SERVICE AND SPARES
B Rotate fan and air/gas manifold assembly (1.) around
the top of the heat exchanger until the lug on the air/
gas manifold is visible.
1.
Fig. 93 Rotate the air/gas manifold assembly
B Lift up assembly and remove from boiler.
NOTICE: After re-assembly, check the CO/
CO levels as described in section 6.6
2
Setting the air/gas ratio.
6.8.8

FAN

1. Remove two screws retaining the fan to the air/gas
manifold.
2. Remove the air/gas manifold.
3. Remove the screw.
4. Remove the retaining plate.
5. Remove three screws and the mixing chamber.
Re-assemble with new fan ensuring seals are correctly
fitted.
54
2.
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5.
5.
6.
5.
Fig. 94 Dismantling the air/gas manifold assembly
FLAP VALVE ASSEMBLY
1. Twist the mounting flange clockwise to release.
2. Pull mounting flange off the flap valve assembly.
3. Pull rubber flap off flap valve assembly.
B To replace the flap valve:
– Press the two lugs on the back of the flap into the
two slots in the flap valve assembly.
Fig. 95 Flap valve assembly
6 720 644 741a (2010/10)
2.
1.
1.
4.
3.
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3.
2.
1.
6720643895-117.1Wo