Filter
Top Products
29
12.0 CHANGING COMPONENTS
Publication No. 5111811
IMPORTANT: When changing components ensure
that both the gas and electrical supplies to the
boiler are isolated before any work is started.
See Section 11.1 “Annual Servicing” for removal of
case panel, door etc.
12.1 Fan (Figs. 50 & 51)
1. Note the positions of the three wires on the fan
motor and remove them. Remove the sensing tube
from the fan spigot.
2. Slacken the screws on the fan spigot outlet pipe
clamp. Ease the clamp inwards over the pipe.
3. Remove the four screws securing the combustion
box door and remove the door.
4. Ease the front edge of the left hand baffle upwards,
disengaging the spring clip. Disengage the tab on the
baffle from the slot in the fan hood.
5. Undo the screws securing the fan hood to the
appliance back panel, and draw the fan and hood
assembly forwards.
6. Remove the screws and spring washers securing
the fan to the hood. Transfer the flue spigot outlet pipe
to the new fan.
7. Fit the new fan to the hood using the screws and
spring washers previously removed.
8. Reassemble in reverse order of dismantling.
12.2 Pressure Switch (Fig. 49)
1. Remove the fan as described in section 12.1.
2. Note the positions of the sensing tubes and wires
and remove them.
3. Remove the two screws holding the pressure switch
to the bracket on the combustion box top panel.
4. Fit the new pressure switch and reassemble all
components in reverse order of dismantling.
Pressure
Switch
Sensing
Tubes
Pressure
Switch Wires
Fig. 49
br
b
-
+
Fan Hood
Spring Washer
Securing Screw
Fan Wires
Fan
Sensing
Tube
Ease Fan Spigot Outlet
Pipe Clamp Inwards
Fan Spigot Outlet Pipe
Spring Clip
Baffle
Tab
Fan
Fig. 50
Fig. 51