4.2 Schematic diagram
45
46
22
29
28
27
32
4
Figure 4.2
3 Heating circuit filling cock
4
Condensate outlet pipe
5
Heating delivery pipe
6
Domestic hot water outlet pipe
7
Gas cock
8
Heating circuit safety valve discharge pipe
9
Domestic hot water inlet cock
10 Heating return pipe
11 Heating circuit drain cock
- 22 -
TECHNICAL SPECIFICATIONS
44
18
21
38
19
36
24
40
23
11
7
43
31
47
25
34
10
5
18 Flue gas NTC probe and thermal fuse
19 Heating NTC return probe
20 Primary condensing exchanger
21 NTC heating delivery probe - NTC maxi-
mum temperature
22 Flame detection electrode/ignition elec-
trode
23 3 bar safety valve
24 Automatic bleed valve
33
42
41
35
39
30
3
9
6