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49
Fig. 74
Fig. 76
Fig. 75b
Fig. 79
Fig. 80
M1
N
18.2.7 Removing the heat exchanger
1
.
C
arry out step
1
8.1.1
;
2. Remove the air gas manifiold as in
1
8.2.1
(
Fig. 74)
;
3
.
R
emove the flow pipe clip and
unscrew the pump nut (Fig. 75a &
7
5b);
4
.
R
emove the flow and return pipes
and the condense drain pipe from
t
he heat exchanger. (Fig. 75c);
18.2.8 Removing the spark generator
1. Carry out step 18.1.1;
2. Disconnect the ignition electrode,
live, neutral and earth cables from
the ignitor (Fig. 79)
;
3. Remove the screw N from the ignitor
and remove (Fig. 80);
4. Reassemble in reverse order.
Fig. 75c
Fig. 75a
Fig. 78
5. Remove the two bolts securing the
exchanger (Fig. 76)
;
6. Remove the screw M2; then rotate
clockwise the bearing frame (Fig. 77);
7. Remove the heat exchanger by
slightly rotating. (Fig. 78);
8. Reassemble in reverse order.
Fig. 77
M2