Baxi Solo 3 30 PF Installation And Servicing Instructions page 40

Fig. 108
Fan
Sensing Tubes
40
Fig. 110
Outlet Flange
(30-40-50 Models shown)
Flexible Tubes
Fig. 111
Green
Black
White
Fig. 112
10.0 Changing Components
10.7 Changing Components (Cont)
1. To change Fan - Pressure Switch - Burner -
Burner Injector - Pilot Burner Injector - Gas
Manifold, proceed as follows:-
2. Release the four latches holding the combustion
Fig. 109
box door (Fig. 108). Remove the combustion box
door by pulling forward (Fig. 110).
3. Release the 5-pin electrical plug connecting the
pressure switch and fan (Fig. 109). Withdraw the
fan assembly by pulling forwards from the top edge
(Fig. 110).
10.8 Fan (Fig. 111)
1. Disconnect the two sensing tubes from the
venturi situated on the fan.
2. Disconnect the 2 fan wires from the connection
on the electrical plug. Remove the 3 screws
securing the fan to the fan hood.
3. 30-40-50 models only - Remove the two screws
securing the fan outlet flange to the fan and
remove. Clean all sealing mastic from the outlet
flange.
4. Fit the outlet flange onto the new fan, fix with the
2 screws and seal the outside gap between the fan
body and the outlet fan with the mastic provided.
5. 60-70-80 models only - When fitted, unbend the
tabs securing the fan outlet restrictor to the outlet
flange on the original fan.
6. Fit the outlet restrictor to the new fan outlet
flange. Bend the tabs over the flange to secure the
restrictor.
7. Fit the new fan and re-assemble all components
in reverse order of dismantling, reconnect the new
fan wires into the connections on the electrical plug
- either wire can be connected into either
connection.
10.9 Pressure Switch (Fig. 112)
Fig. 112b
1. Disconnect sensing tubes noting their positions.
2. Remove the screw securing the pressure switch
to its bracket and unhook the pressure switch.
3. Disconnect the 3 electrical terminals from the
pressure switch. Note the position of the tags
before removal and reconnect in correct order.
4. Fit new pressure switch and re-assemble all
components ensuring that the flexible tubes from
the fan unit to the pressure switch are routed
correctly and that they are not kinked or flattened
(Fig. 112b). Ensure that the electrical terminals are
connected to their correspondingly marked tags.