TECHNICIAN
INSTALLER
USER
19
1.12 Eolo 21-24 Maior @ boiler components.
Key:
1 - Air/flue intake sockets (A air) - (F flue)
2 - Fan safety pressure switch
3 - Flue extraction fan
4 - Domestic hot water NTC thermistor
5 - Gas valve
6 - Draining valve
7 - Central heating filling valve
8 - Automatic air vent valve
9 - Sealed chamber
10 - Expansion vessel
11 - Central heating NTC thermistor
12 - Over heat safety thermostat
13 - Combustion chamber
14 - Circulating pump
15 - Water pressure switch
16 - Plated heat exchanger
17 - 3 bar safety valve
18 - Automatic by-pass exclusion stem
19 - 3 way hydraulic valve
20 - Positive signal pressure socket
21 - Negative signal pressure socket
22 - Flue hood
23 - Primary heat exchanger
24 - Ignition / detection electrodes
25 - Burner
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