Baxi Fourtech Series Operating And Installation Instructions page 60

Figure 18
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
INSTRUCTIONS FOR FITTERS
24
Heating DHW Gas
delivery outlet
60
DHW Heating
inlet return
13 Safety valve
14 Water-water plate heat exchanger
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 Fumes thermostat
23 Burner
24 Expansion vessel
926.116.5 - en