- 23 -
INST
ALLA
TION
TECHNICAL INFORMATION
Main diagram
4.2
Fig. 4.2
5
C.h.
fl ow valve
6
D.h.w. outlet valve
7
Gas inlet valve
8
D.c.w. inlet valve
9
C.h. return valve
10
Condensate drain pipe
11
Main circuit drain valve
Flue temperature probe NTC
19
C.h. temperature probe NTC
20
Condensing heat exchanger
21
Safety thermostat
22
Flame-detecting electrode
23
Air manifold
24
C.h. pressure relief valve
25
Automatic airpurger valve
26
Pump
27
Pump vent plug
28
Gas valve
29
Gas valve inlet test point
30
D.h.w. temperature probe NTC
31
47
48
49
21
41
38
29
43
27
33
36
25
7
9
11
10
5
44
8
6
34
30
26
23
20
31
42
37
46
45
35
40
50
19
22