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7113868.01 - en
INSTRUCTIONS FOR FITTERS
140 Fi - 240 Fi - 280 Fi
1
heating filter
2
pressure gauge
3
powered 3-way valve
4
gas valve
5
heating circuit pump with deaerator
6
boiler filling tap
7
gas train with injectors
8
flame detection electrode
9
fumes conveyor
10
air pressure switch
11
negative pressure point
12
positive pressure point
13
venturi tube
14
fan
15
water-fumes exchanger
16
flame ignition electrode
17
burner
18
safety thermostat
19
NTC heating probe
20
NTC domestic hot water sensor
21
sacrificial anode
22
storage boiler
23
heating circuit expansion vessel
24
DHW circuit pump
25
storage boiler drain tap
26
DHW circuit safety valve
27
DHW circuit expansion vessel (accessory)
28
boiler safety valve
29
boiler drain tap
30
hydraulic pressure switch
31
check valve on automatic by-pass
32
plate exchanger
Key:
Figure 22
DHW
outlet
DHW
inlet
heating delivery
heating return
gas inlet