93
71.03982.03 - EN
INSTALLATION INSTRUCTIONS
24 MI
Key:
1
Pump and air separator
2
Check valve
3
Three-way valve
4
Three-way valve motor
5
Pressure gauge
6
Heating circuit extractable filter
7
Disconnector
8
Boiler filling tap
9
Cold water extractable filter
10
DHW priority sensor
11
NTC domestic hot water sensor
12
Check valve on automatic by-pass
13
Water pressure switch
14
Boiler drain tap
15
Safety valve
16
Water-water plate heat exchanger
17
Gas valve with gas diaphragm
18
Gas train with nozzles
19
Central heating NTC sensor
20
Ignition/flame detection electrode
21
Safety thermostat
22
Water-fumes exchanger
23
Fumes conveyor
24
Fumes thermostat
25
Burner
26
Expansion vessel
Figure 18
Heating flow
DHW
outlet
Gas
DHW
inlet
Heating return
CG_2270 / 1006_1806