20
Fig. 35
B
A
to ensure they are replaced correctly. Replace in
the reverse order ensuring the cartridge is facing
the correct way.
6.18
EXPANSION VESSEL (fig. 1)
Should the removal and replacement of the expan-
sion vessel be deemed impractical, an external
expansion vessel may be fitted to the return pipe
as close to the appliance as possible.
6.18.1 EXPANSION VESSEL REMOVAL (with suffi-
cient clearance above, fig. 32)
Carry out component removal procedure as de-
scribed in 6.4.
Disconnect the flue from the appliance. Discon-
nect the expansion vessel from the flexible expan-
sion pipe. Disconnect the flexible expansion pipe
from the vessel. Unscrew the nut that secures the
vessel to the frame. Locate and remove the 6
screws (
A
) that secure the vessel top holding plate
(
B
), remove the plate. The expansion vessel can
now be removed. Replace in the reverse order.
Ensure all seals are in good condition, taking care
to ensure they are replaced correctly.
6.19
FAN TRANSFORMER REMOVAL (fig. 33)
Carry out component removal procedure as described
in 6.4. Unclip and remove the air chamber front and left
side covers. Disconnect the fan transformer wiring.
Locate and remove the 2 screws (
D
) that secure the fan
transformer to the air box plate, cut the two cable ties
previewed on heat-shrinkable insulators that protect the
transformer connectors. Unthread the heat- shrinkable
insulators. Carefully remove the fan transformer. Re-
place in the reverse order.
ATTENTION
The transformer connected, put the heat-shrink-
able insulators and fix it thorugh two new calbe
ties. The heat-shrinkable insulators assure the
correct protection from liquid penetration of trans-
former connector.
Fig. 32
A
B
Fig. 33
D
Fig. 31
A
D
C
B
6.20
CONDENSE TRAP REMOVAL (fig. 34)
Carry out component removal procedure as described
in 6.4. Disconnect the 2 upper rubbers condense pipe
(
A
). Remove the pin (
B
) that secures the trap to the air
box plate. Disconnect the lower rubber condense pipe
(
C
) from the condense trap. Carefully remove the
condense trap. Replace in the reverse order.
6.21
FLUE COLLECTOR REMOVAL (fig. 35)
Carry out component removal procedure as de-
scribed in 6.4. Unclip and remove the air chamber
front and left side covers. Locate and remove the
screw (
A
) that secures the flue gas analysis test
point cover (
B
). Gently pull down and to the left and
ease the flue collector from its location. Replace
in the reverse order.
Fig. 34
A
B
C