Baxi ECO4S 24 F Operating And Installation Instruction page 27

Figure 17
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
INSTRUCTIONS FOR FITTERS
&hEd/KE > /Zh/d / 'Z D
&
Heating DHW Gas
delivery outlet
27
& &
DHW Heating
inlet return
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 Fan
23 Venturi tube
24 Positive pressure point
25 Negative pressure point
26 Air pressure switch
27 Burner
28 Expansion vessel
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