Removing The Main Heat Exchanger - Ariston microCombi 23 MFFI Installation And Servicing Instructions

F . 6.15
IG
H
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.
34

6.3.4 Removing the main heat exchanger

1. Drain the boiler of water;
2. Remove the overheat thermostat sensor, D.H.W. sensor
and heating sensor "I" (F
3. Release the four connection nuts "J" connecting the
exchanger to the flow and return pipes (F
4. Pull it straight out (F
F . 6.16
IG
. 6.17);
IG
. 6.19).
IG
I
J
. 6.18);
IG
I
Fig. 6.17
F . 6.18
IG
F . 6.19
IG