19
Mynute
6.19.2 EXPANSION VESSEL REMOVAL (with insuf-
ficient clearance above)
Carry out component removal procedure as de-
scribed in 6.4.
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 ther-
mistor, & overheat thermostat. Carefully unclip
the wires from the air chamber and withdraw the
wiring & grommet from the air chamber. Discon-
nect the electrode lead and burner thermostat
wires
Disconnect the outlet gas pipe and the flow &
return pipes 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 section
of the air chamber. The complete air chamber
assembly can now be lifted clear from the appli-
ance. Disconnect the flexible expansion pipe
from the vessel (fig. 40). Locate and remove the
2-screws that secure the vessel (1). The expan-
sion 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 condition, taking care to ensure they are
replaced correctly.
Fig. 24A