Installation manual

Installation and servicing instructions strictly reserved for qualified gas installers
39
Legend
1 Automatic air vent
2 Pump retaining screw
3 Pump
4 Discharge pipe
5 Flow sensor retaining clip (*)
6 Flow sensor (*)
7 Flow sensor retaining clip (*)
8 Cold water filter retaining clip (*)
9 Cold water filter (*)
10 Filling tap (*)
11 Filling pipe retaining clip (*)
12 Filling pipe retaining clip (*)
13 Flow sensor connector (*)
14 “Foaming” filter retaining clip
15 “Foaming” filter
16 Discharge pipe retaining clip
17 DHW exchanger retaining screw (*)
18 Discharge valve
19 Heating safety valve
20 Heating safety valve retaining clip
21 Filling tap (*)
22 Heating pressure sensor retaining clip
23 Discharge retaining clip
24 Three-way valve
25 DHW exchanger (*)
26 Three-way valve connector
27 Heating pressure sensor connector
28 Heating pressure sensor
(*) Not required on SB models
14.4.1 Cold water filter
Release the retaining clip from the filter
(8).
Remove the cold water filter (9) and
clean it.
14.4.2 “Foaming” filter
The “foaming” filter improves gas
purging in the heating circuit.
Close the heating flow and return
valves, and drain the boiler.
Release the filter retaining clip (14)
located under the pump.
Remove the “foaming” filter (15).
Clean and replace it, correctly
positioning the stud.
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