Main Diagram - Biasi Activ A 18S User Manual And Installation Instructions

4.2

Main diagram

17
Fig. 4.2
5 C.h. fl ow 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
TECHNICAL INFORMATION
38
39
33
30
25
26
34
29
8 6
37
36
15
18
16
32
19
22
23
21
28
9
7
18 Safety thermostat
19 Flame-detecting electrode
20 Air manifold
21 C.h. pressure relief valve
22 Automatic airpurger valve
23 Pump
24 Pump vent plug
25 Gas valve
35
5
- 21 -