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83
71.06199.02 - EN
INSTALLATION INSTRUCTIONS
34. FUNCTIONAL CIRCUIT DIAGRAM
24 BIC FF
Figure 16
Heating flow
DHW
outlet
Gas
DHW
inlet
Heating return
Key:
1
heating filter
2
pressure gauge
3
powered 3-way valve
4
gas valve with gas diaphragm
5
heating circuit pump with deaerator
6
check valve
7
disconnector
8
boiler filling tap
9
gas train with injectors
10
fumes conveyor
11
air pressure switch
12
negative pressure point
13
positive pressure point
14
venturi tube
15
fun
16
safety thermostat
17
water-fumes exchanger
18
Ignition/flame detection electrode
19
burner
20
NTC domestic hot water sensor
21
storage boiler
22
heating circuit expansion vessel
23
NTC heating probe
24
sacrificial anode
25
DHW circuit pump
26
DHW priority sensor
27
storage boiler drain tap
28
DHW circuit safety valve
29
DHW circuit expansion vessel (accessory)
30
boiler safety valve
31
boiler drain tap
32
hydraulic pressure switch
33
check valve on automatic by-pass
34
plate exchanger
CG_2337 / 1104_0402