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21
can now be removed. Replace in the reverse order.
Ensure all seals are in good condition, taking care
to ensure they are replaced correctly.
6.27.2 EXPANSION VESSEL REMOVAL (with insuffi-
cient clearance above)
Carry out component removal procedure as de-
scribed in 6.4.
Disconnect the flexible expansion pipe from the
vessel.
Disconnect the flue elbow or pipe from the appli-
ance flue outlet. Unclip and remove the air cham-
ber cover, gently pull the cover towards you before
lifting and disengaging. Remove the RH side panel
of the air chamber. Disconnect the wiring to the
fan, pressure switch, primary thermistor, overheat
thermostat, condense switch & spark electrode,
taking note of their locations. Carefully unclip the
wires from the air chamber and withdraw the wiring
& grommet from the air chamber.
Disconnect the outlet gas pipe, the flow & return
pipes and the condense pipe from the air chamber.
Locate and remove the 2-screws that secure the
lower section of the air chamber. Locate and
remove the 2-screws that secure the upper sec-
tion of the air chamber. The complete air cham-
ber assembly can now be lifted clear from the
appliance.
Locate and remove the 4-screws that secure the
vessel (see fig. 28). The expansion vessel can
now be removed. Replace in the reverse order.
Take extreme care when refitting the wiring to the
air chamber. Ensure all seals are in good condi-
tion, taking care to ensure they are replaced
correctly.
6.28.1 LATENT HEAT COLLECTOR fig. 29/30
Carry out component removal procedure as de-
scribed in 6.4.
Remove the flue hood and fan assembly as
detailed in 6.16. Disconnect and remove the inlet,
outlet and condense pipes from the collector.
Unscrew and remove the 3 screws that secure the
collector to the air chamber and disconnect the
collector from the flue connection. Replace in the
reverse order ensuring all seals are intact and
located correctly.
Fig. 28
B
A
6.28.2 DISMANTLING THE LATENT HEAT COLLEC-
TOR
Apart from routine cleaning of the coil, the latent
heat collector is a non-serviceable component,
therefore, there is no requirement to disassemble
the collector.
6.29
CONDENSE TRAP REMOVAL fig. 31
Carry out component removal procedure as de-
scribed in 6.4.
Disconnect the flexible condense pipe (1) from the
condense trap. Locate and remove the condense
pipe locking pin and disconnect the condense pipe
(2) from the condense trap. Locate and disconnect
the condense pressure switch pipe from the con-
dense trap (3). Carefully remove the condense
trap. Replace in the reverse order.
Fig. 29
Fig. 30
Fig. 31