Main Diagram - Biasi M300V.2025 SM User Manual And Installation Instructions

4.2

Main diagram

45
46
20
22
29
28
27
32
3
Fig. 4.2
3 Condensate drain pipe
4 C.H. flow valve
5 D.H.W. outlet pipe
6 Gas inlet valve
7 C.H. pressure relief valve pipe
8 D.C.W. inlet valve
9 Main circuit drain valve
10 C.H. return valve
TECHNICAL INFORMATION
44
18
21
38
19
36
24
40
23
9
6
43
31
47
25
35
10 4
18 Flue temperature probe NTC and Safety
thermal fuse
19 C.H. temperature return probe NTC
20 Condensing heat exchanger
21 NTC heating delivery probe - NTC maxi-
mum temperature
22 Flame-detecting electrode/Ignition elec-
trode
33
42
41
34
39
30
8 5
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