Reassembly Of Parts Removed For Servicing; Flue System; Operation Of Fan; Replacement Of Parts - Saunier Duval Semia Condens F24 E Instructions For Use Installation And Servicing

14.5 Reassembly of parts removed
for servicing
All parts are replaced in reverse order to
removal.
14.6

Flue system

- Check externally to make sure that fl ue
is not blocked
- Inspect fl ue system to make sure that
all fi ttings are tight and secure.
14.7

Operation of fan

- Switch on electrical supply and turn on
gas.
- Set selector switch to 'Winter'
tion.
- Light burner by operating external con-
trols (if fi tted) to call for heat.
- Do not light the boiler without the sealed
chamber cover fi tted
- Check that fan operates when burner lit
and stops when it goes out.

15 Replacement of parts

Warning!
• Before starting the replacement of
parts, read the "Safety instructions"
chapter carefully.
15.1

To replace fan

- Slide fl ue sensing probe insulating boot
away from fan.
- Pull off both red and white sensing
probe tubes.
- Disconnect power supply and earth
leads to fan.
- Slacken, but do not remove, two screws
securing fan to rear of fl ue hood.
- Supporting fan, unscrew and remove
two screws securing fan to front of fl ue
hood.
- Lower fan from top of boiler then tilt
base of fan to right hand side. Gently
ease fan forwards and out of boiler.
- Transfer fl ue sensing probe assembly
onto replacement fan.
- Fit replacement fan in reverse order to
removal.
Note: Ensure white air sensing tube is con-
nected to upper probe and red tube to
lower probe.
posi-
15.2

To replace air pressure switch

- Locate air pressure switch in upper right
hand corner of sealed chamber.
- Pull off plastic tubes from base of
switch.
- Remove electrical connections from
switch.
- Unscrew and remove two screws secur-
ing switch to upper panel and remove
switch.
- Fit electrical connections to replacement
switch as follows:
NO - BROWN
NC - BLACK
C
- Fit replacement switch in reverse order
to removal.
Important: Refi t red tube to right hand
connector and white tube to left hand
connector.
40
- BLUE