Removing The Pressure Relief Valve; Removing The Domestic Expansion Vessel; Removing The Overheat Thermostat; Removing The Temperature Sensors (Ntc's) - Ariston Combi A 24 MFFi Installation And Servicing Instructions

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;
18.3.7 Removing the expansion vessel
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);
U
18.3.8 Removing the overheat
thermostat
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).
Supplied By www.heating spares.co Tel. 0161 620 6677
5. Pull the expansion vessel to remove it (see Fig. 98);
6. Reassemble in reverse order.
Fig. 97
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. 100).
Fig. 99
Fig. 96
18.3.10 Removing DHW sensor
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
Fig. 98
Fig. 101
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