34
To replace, repeat the steps in reverse order, paying
particular attention to the following:
a -Centre the electrode in the positioning hole carefully,
otherwise the electrode may break;
b -Ensure that the left hand and right hand electrodes are
located the correct way round (facing each other), to
give the correct spark gap;
c -Check that the cables have been connected correctly;
d -Check that the rubber gasket seals the cable/ electrode
connection point completely.
FIG. 6.15
FIG. 6.16
H
1. Drain the boiler of water;
2. Remove the overheat thermostat sensor, D.H.W. sensor
and heating sensor “I” (FIG. 6.17);
3. Release the four connection nuts “J” connecting the
exchanger to the flow and return pipes (F
IG. 6.18);
4. Pull it straight out (FIG. 6.19).
6.3.4 Removing the main heat exchanger
FIG. 6.18
J
Fig. 6.17
I
FIG. 6.19
I
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