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4.2 Schematic diagram
35
34
20
27
Figure 4.2
3 Heating delivery pipe
4 Tank coil delivery pipe
5 Gas cock
6 Heating circuit safety valve discharge
pipe
7 Heating circuit filling cock
8 Heating circuit drain cock
TECHNICAL SPECIFICATIONS
33
19
36
37
26
25
38
28
5
40
39
18
22
30
23
31
21
42
8
7
9
9 Tank coil and heating return pipe
10 Heating circuit pressure gauge
18 Heating NTC - Max temperature NTC
19 Primary exchanger
20 Flame detection electrode/ignition
electrode
21 3 bar safety valve
32
3
4
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