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60
926.116.5 - en
INSTRUCTIONS FOR FITTERS
24
Legend:
1
Pump and air separator
2
Three-way valve
3
Three-way valve motor
4
Pressure gauge
5
Heating circuit extractable filter
6
Boiler filling tap
7
Cold water extractable filter
8
DHW priority sensor
9
NTC domestic hot water sensor
10
Check valve on automatic by-pass
11
Water pressure switch
12
Boiler drain tap
13
Safety valve
14
Water-water plate heat exchanger
15
Gas valve
16
Gas train with injectors
17
Central heating NTC sensor
18
Ignition / flame detection electrode
19
Safety thermostat
20
Water-fumes exchanger
21
Fumes conveyor
22
Fumes thermostat
23
Burner
24
Expansion vessel
Figure 18
Heating
delivery
DHW
outlet
Gas DHW
inlet
Heating
return
CG_2081 / 1001_1803