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INST
ALLA
TION
TECHNICAL INFORMATION
4.2 Main diagram
Fig. 4.2
4
C.h. flow valve
5
D.h.w. outlet valve
6
Gas inlet valve
7
D.c.w. inlet valve
8
C.h. return valve
9
Condensate drain pipe
10
Main circuit drain valve
18
Condensing heat exchanger air purger
valve
19
Flue temperature probe NTC
20
Safety thermal fuse
21
C.h. temperature probe NTC
22
Condensing heat exchanger
23
Safety thermostat
48
49
50
22
24
41
42
39
30
45
28
34
37
26
6
8
10
9
4
7
5
35
31
27
21
18
32
43
38
44
47
36
51
19
23
20
52