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18.3.7 Removing the expansion vessel
18.3.8 Removing the overheat thermostat
1. Carry out step 18.3.1;
2
.
I
solate the gas supply and disconnect all
pipe connections;
3. Remove the boiler from the wall
4. Unscrew the nut U (see Fig. 98);
1. Remove the casing as in step 18.1.1;
2. Pull off the thermostat connections. Then
remove the thermostat from the pipe by
releasing it’s securing clip (see Fig. 100).
18.3.9 Removing the temperature sensors (N.T.C’s)
1. Remove the casing as in step 18.1.1;
2. Pull off the NTC connections. Then
remove the NTC from the pipe by
releasing it’s securing clip (see Fig. 101).
Fig. 98
Fig. 101
Fig. 100
Fig. 99
5
.
P
ull the expansion vessel to remove it
(
see Fig. 99)
;
6. Reassemble in reverse order.
U