23
6.12.1 INJECTOR (fig. 29)
Carry out component removal procedure as de-
scribed in 6.4.
Unscrew and remove gas pipe connections
(A &
E)
. Locate and remove the injector
(F)
inside the
pipe. Replace in the reverse order. Check and
adjust burner pressure settings.
WARNING, A GAS SOUNDNESS CHECK MUST
BE CARRIED OUT.
6.13
ELECTRODE & CONDENSE SENSOR (fig. 30)
Carry out component removal procedure as de-
scribed in 6.4.
Unclip and remove the air chamber front and RH
side covers. Disconnect the electrode lead and
ancillary wiring from their respective connectors.
Remove the 2 retaining screws
(A)
for electrode
(B)
and remove. Remove the retaining nut
(C)
for
condense sensor
(D)
and remove.
6.14
FLUE FAN & MIXER (fig. 31)
Carry out component removal procedure as de-
scribed in 6.4.
Unclip and remove the air chamber front and the
RH side covers. Slacken the gas pipe
(A)
at the air
box connection and swing/rotate of the fan assem-
bly.
To remove the mixer
(B)
locate and remove the
three screws
(C)
. To remove the fan
(D)
, discon-
nect the electrical connections attached to the
fan, locate and remove the four screws
(E)
.
Gently ease the fan from its location.
Replace in the reverse order. Ensure all seals are
in good condition, taking care to ensure they are
replaced correctly.
6.15
BURNER (fig. 32)
Carry out component removal procedure as de-
scribed in 6.4.
Unclip and remove the air chamber front and the
RH side covers. Slacken the gas pipe
(A)
at the air
box connection and swing/rotate of the fan assem-
bly. Locate and remove the 3 internal nuts
(B)
which secure the fan assembly in position
(C)
to
the heat exchanger
(D)
. Gently ease the fan
assembly out of its location. Once the assembly
has been removed, the burner
(E)
can be with-
drawn from the heat engine. Ensure the seal
(F)
is
in good condition, taking care to ensure it is
replaced correctly. Replace in the reverse order.
6.16
MAIN HEAT EXCHANGER (fig. 33 & 34)
Carry out component removal procedure as de-
scribed in 6.4.
Unclip and remove the three air chamber covers
(front, LH, RH sides). Disconnect all the wiring
connections.
Fig. 33:
Slacken the gas pipe
(A)
at the air box
connection and swing/rotate of the fan
assembly.Disconnect the flow
(B)
, return
(C)
and
condense connections on the heat exchanger.
Locate and remove the 4-screws that secure the
heat exchanger to the combustion chamber
(D)
.
Move the heat exchanger to the right and disconnect
it from the flue collector
(E)
. The heat exchanger
can now be lifted up and withdrawn from the
appliance.
Fig. 30
A
B
D
C
Fig. 31
Fig. 32
E
Fig. 33
C
A
B
D
E
A
B
C
D
D
C
E
F
B
A
