Baxi Solo 3 30 PF System Installation And Servicing Instructions page 40

11.0 Changing Components - Page 40
11.7 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 box
door. Remove the combustion box door by pulling forward
from the bottom and unhooking its top edge (Fig. 115).
3. Disconnect the 5-pin pressure switch and fan plug (Fig.
114). Withdraw the fan assembly by pulling forwards from
the top edge (Fig. 115).
11.8 Fan (Fig. 116)
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. 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. 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.
11.9 Pressure Switch (Fig. 117)
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
in reverse order of dismantling ensuring that the electrical
terminals are connected to their correspondingly marked
tags.