6
ENG
6
12
11
10
9
8
7
5
4
3
1
13
14
19
KEY
1 Fan
2 Main
exchanger
3 Combustion
chamber
4 Gas
valve
5 D.H.W. plate exchanger
6 Divertor
valve
7 C.H. sensor (SM)
8 100°C safety stat
10 Pump with automatic air vent
11 Expansion vessel
12 Safety valve
13 Boiler discharge
14 Water flow switch
15 Tridicator
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 Aqua Guard Filter System
Figure 3
KEY
1 Control
panel
3 Combustion
chamber
4 Fan
5 Combustion analysis intakes
6 Negative pressure intake
7 Positive pressure intake
8 Smoke pressure switch
9 C.H. sensor (SM)
10 Main exchanger
11 100°C safety stat
12 Gas valve
13 Flow water switch
14 Divertor valve
15 Aqua Guard Filter System
Figure 2