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1.4
FUNCTIONAL DIAGRAM
2
3
26
4
23
22
U
1.5
MAIN COMPONENTS
2
24
15
1
8
9
7
5
12
6
17
20
21
19
E
G
M
11
10
13
14
16
18
25
R
S3
KEY
1 Fan
2 Water-gas exchanger
3 Breather valve
4 Gas valve
5 D.H.W. exchanger
6 Divertor valve
7 C.H. sensor (SM)
8 100°C safety stat
9 Air relief valve
10 Circulation pump
11 Expansion vessel
12 Safety valve
13 Boiler discharge
14 Water pressure transducer
15 Flowmeter
16 Automatic by-pass
17 D.H.W. filter
18 C.H. return cock
19 C.H. flow cock
20 D.H.W. cock
21 Gas cock
22 Fixing jig
23 D.H.W. sensor (SS)
24 90°C limit stat
25 Condensation water trap
26 Gas rate adjuster
S3 Condensation outlet
KEY
1 Control panel
2 D.H.W. exchanger
3 Gas valve
4 Gas rate adjuster
5 Positive pressure take-off
6 Breather valve
8 Sensing electrode
9 Water-gas exchanger
10 Limit stat
11 Ignition electrode
12 Fan
13 Negative pressure take-off
14 Gas pressure take-off
15 Automatic breather
16 100°C safety stat
17 C.H. sensor (SM)
18 Circulating pump
Fig. 2
Fig. 3
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