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4.2
Main diagram
17
21
33
5 C.h. flow valve
6 Gas inlet valve
7 C.h. return valve
8 Condensate drain pipe
9 Main circuit drain valve
15 Flue temperature probe NTC
16 C.h. temperature probe NTC
17 Condensing heat exchanger
18 Safety thermostat
- 20 -
TECHNICAL INFORMATION
39
40
20
34
31
26
35
27
30
8
6
38
37
15
16
18
19
24
25
29
23
36
9
7
19 Condensing heat exchanger air purger
valve
20 Safety thermal fuse
21 Flame-detecting electrode
22 Air manifold
23 C.h. pressure relief valve
24 Automatic airpurger valve
25 Pump
26 Gas valve
5
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