Ariston Combi A 24 MFFi - Removing the Domestic Expansion Vessel; Removing the Overheat Thermostat; Removing the Pressure Relief Valve; Removing the Temperature Sensors (Ntcs)

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Fig. 97
Fig. 98
Fig. 96
18.3.7 Removing the expansion vessel
18.3.8 Removing the overheat
thermostat
1. Carry out step 18.3.1;
2. Isolate the gas supply and disconnect all pipe
connections;
3. Remove the boiler from the wall
4. Unscrew the nut U (see Fig. 97);
18.3.9 Removing the temperature
sensors (N.T.C’s)
5. Pull the expansion vessel to remove it (see Fig. 98);
6. Reassemble in reverse order.
18.3.6 Removing the pressure relief valve
1. Carry out step 18.1.1 and 18.3.1;
2. Remove the clip securing the valve (see Fig.
96) and pull it toward you;
3. Reassemble in reverse order; take care to
ensure the valve is in the correct position;
U
Fig. 99
Fig. 101
1. Remove the casing as in step 18.1.1;
2. Pull off the connections. Then remove
the thermostat from the pipe by
releasing it’s securing clip (see Fig. 99).
1. Remove the casing as in step 18.1.1;
2. Pull off the sensor connections.
Then remove it by releasing it’s clip
(see Fig. 101).
Fig. 100
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. 100).
18.3.10 Removing DHW sensor