Ravenheat CSI 85 - Manual (Page 32)

7.8.1 Remove the two sides of the casing by
slightly lifting them and sliding them
towards the top of the appliance, to release
them from their upper suspension hooks.
7.8.2 Remove the fan (sect. 7.5).
7.8.3 Remove condensing heat exchanger.
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7.10 TO REPLACE THE ELECTRODE
(fig.49).
7.10.1 Remove front casing (sect 7.3).
Remove combustion chamber from cover
(sect 7.4).
Fig. 41
7.8.5 Remove the flue hood (sect. 7.6).
7.8.6 Remove the automatic air vent (Fig. 92).
7.8.7 Disconnect unions for two heating
(right side of boiler) water pipelines.
7.8.8 Unscrew the rings that fasten the heat
exchanger to the combustion chamber.
7.8.9 Remove the two side insulation panels at
top of heat exchanger.
7.8.10 Pull the heat exchanger up until its flow
connections come out from the combustion
chamber and then remove it (fig. 48).
7.8.11 Replace in reverse order.
Ensure correct wire position.
IMPORTANT: When replacing a heat
exchanger new seals must be used.
7.9 TO REMOVE/REPLACE COMBUSTION
CHAMBER INSULATION PANELS.
7.9.1 Remove casing front panel (sect. 7.3).
Remove combustion chamber front cover
(sect. 7.4).
7.9.2 Remove fan (sect. 7.5).
7.9.3 Remove condensing heat exchanger
(sect. 7.6).
7.9.4 Remove the flue hood (sect. 7.7).
7.9.5 Remove main burner (fig. 51).
Remove top insulation pieces at sides.
Remove 2 screws securing combustion
chamber to rear of boiler.
Lower chamber carefully remove all
insulation panels.
7.9.6 Replace in reverse order.
7.7 TO REMOVE/REPLACE THE FLUE
HOOD.
7.7.1 Remove front casing (sect. 7.3).
Remove combustion chamber front cover
as in (sect. 7.4).
7.7.2 Remove the fan (sect. 7.5).
7.7.3 Remove condensing heat exchanger (sect.
7.6).
7.7.4 Remove the three screws on the front
that fasten the hood to the combustion
chamber.
7.7.5 Remove the two screws at the rear of
hood.
7.7.6 Replace in reverse order
7.8 TO REMOVE THE HEAT EXCHANGER
(fIG. 47-48).
7.10.2 Detach the wire from electrode and then
unscrew the nut that secures it to the pilot
burner assembly and remove.
7.10.3 Replace with new electrode in reverse order.