Westen boyler digit Instruction Manual For Users And Fitters page 27

DHW
outlet
Figure 21
Legend:
1 boiler
2 boiler probe
3 DHW exchanger
4 expansion vessel
5 boiler drain tap
6 NTC heating probe
7 safety thermostat
8 ignition electrode
9 water-fumes exchanger
10 fumes conveyor
11 negative pressure point
12 positive pressure point
13 concentric connector
14 air pressure switch
15 fan
16 flame detection electrode
17 gas train with injectors
INSTRUCTIONS FOR FITTERS
240/40 Fi - 240/60 Fi - 280/60 Fi
DHW
inlet
CH
return
18 safety valve on heating circuit 3 bar
19 differential hydraulic pressure switch
20 automatic vent valve
21 pump with air separator
22 gas valve
23 heating return filter
24 automatic by-pass
25 gas tap
26 pressure gauge
27 burner
28 three-way valve
29 three-way valve motor
30 boiler filling tap
31 safety valve on DHW circuit 8 bar
32 boiler discharge tap
33 flow adjuster
34 water supply tap
27
CH gas
delivery
926.008.1 - GB