Table of Contents
Advertisement
Servicing & Replacement of Parts – Page 26
4) Insulation (Continued)
f)
Carefully replace burner.
g) Refit hot surface igniter and flame sensor.
WARNING This component is fragile and requires
careful handling.
h) Replacement is the reverse of removal.
5) Burner
a) Remove combustion chamber as described in
'Servicing Boiler'.
b) Remove 8 M5 screws retaining burner to the combustion
chamber. Fig. 19.
c) Remove burner from the combustion chamber.
d) Ensure the burner is fitted with the gasket supplied with
it.
e) Taking care not to damage the burner surface, install
new burner into combustion and secure with 8 screws.
f)
Re-assemble as described in section 'Servicing Boiler'.
6) Syphon
a) Remove decorative and functional doors as described in
'Servicing Boiler'.
b) Remove fan see 'Servicing Boiler'.
c) Disconnect flexible condensate pipe from the rear of the
combustion chamber/sump casting. Fig. 15.
d) Disconnect syphon from its wastepipe. See FIG. 9.
e) Undo nut securing Syphon to the bottom of the boiler
casing.
f)
Replacement of the Syphon is the reverse of removal.
See Servicing Instructions for re-assembly of boiler.
26
Servicing & Replacement of Parts
7) Flue Hood/Combustion Chamber Seals.
a) Remove combustion chamber/fluehood as described in
'Servicing Boiler' See Fig.16.
b) Remove old seal.
c) Clean groove using a soft brush or dry lint free cloth.
d) Ensure new seal is correct (flue hood and combustion
chamber require different seals).
e) Lay seal over groove and gently push into the groove
until fully home.
See Servicing Instructions for re-assembly of boiler.
8) Injector
a) Remove decorative and functional doors as described in
'Servicing Boiler'.
b) Remove fan see 'Servicing Boiler'.
c) Remove injector by unscrewing from gas supply pipe.
d) Replacement is the reverse of removal.
9) Gas Valve Assembly
a) Remove decorative and functional doors as described in
'Servicing Boiler'.
b) Remove fan as described in 'Servicing Boiler'.
c) Disconnect electrical supply lead at the gas valve by
removing the two retaining screws and unplug.
d) Remove 4 M5 screws securing gas control valve to
boiler service cock.
e) Remove 6 M5 screws retaining gas assembly mounting
plate 4 M5 on the left underside of the plate and two
within the casing. Remove M5 screw attaching the valve
to its mounting bracket.
f)
Slide gas assembly forward and remove from boiler.
g) Remove flexible tube from assembly and fit to new gas
assembly.
h) Replacement is the reverse of removal ensuring a new
gasket is fitted between casing and mounting plate and
the 'O' ring seal is correctly positioned between the gas
control valve and the boiler service cock.
Publication No. 559779
Advertisement
Table of Contents
