Circuit Diagram - Baxi Mainfour 240 F Manual Para El Usuario

Figure 17
Legend:
1 Boiler drain tap
2 Boiler filling tap
3 Water pressure switch
4 Gas valve
5 Gas train with injectors
6 Water-fumes exchanger
7 NTC domestic hot water sensor
8 Fumes conveyor
9 Fan
10 Negative pressure point
11 Air pressure switch
INSTRUCTIONS FOR FITTERS
28. FUNCTIONAL CIRCUIT DIAGRAM
SEALED CHAMBER
Heating DHW
delivery outlet
Gas DHW Heating
inlet return
12
Central heating NTC sensor
13
Ignition / flame detection electrode
14
Burner
15
Expansion vessel
16 Safety thermostat
17 Pump and air separator
18 Pressure gauge
19 Safety valve
20 Automatic by-pass
21 DHW priority sensor
21
926.527.2 - EN