11
1. 5. 2 Removing the safety valve
1. Loosen nut “Y” (F
IG. 1.33);
2. Disconnect the discharge pipe work from below the
boiler;
3. Unscrew and remove the valve.
1.5.3 Removing the automatic air vent
1. Unscrew valve top “Z” (FIG. 1.34);
2. Remove valve complete with float (F
IG 1.35).
FIG. 1.33
FIG. 1.34
Y
Z
FIG. 1.35
Impor
tant!
Before any component is removed, the boiler
must be drained of all water.
1.5 ACCESS TO THE WATER CIRCUIT
FIG. 1.31
W
FIG. 1.32
X
1.5.1 Removing the pump pressure switch
1. Remove the cable of the pump pressure switch “W”
(Fig. 1.31);
2. Unscrew the pump pressure switch by using a spanner
on the nut “X”(F
IG. 1.32);
3. Remove the pump pressure switch.
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