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INSTRUCTIONS FOR FITTERS
1.24 - 1.14
Legend:
1
Water pressure switch
2
Automatic by-pass
3
Gas valve
4
Ignition / flame detection electrode
5
Central heating NTC sensor
6
Safety thermostat
7
Water-fumes exchanger
8
Fumes conveyor
9
Fumes thermostat
10
Burner
11
Gas train with injectors
12
Expansion vessel
13
Pump and air separator
14
Boiler drain tap
15
Pressure gauge
16
Safety valve
Figure 20
Heating
delivery
Gas
DHW
inlet
Heating
return
CG_2105 / 1001_2204