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1.4
FUNCTIONAL DIAGRAM
ENG
FR
6
KEY
1
Fan
3
Primary exchanger
4
Gas valve
5
D.H.W. exchanger
6
Aqua Guard Filter System
7
C.H. sensor (SM)
8
Safety thermostat 100°C (212°F)
9
Diverter valve
10 Circulator with air release vent
11 Water flow meter
12 D.H.W. sensor (SS)
13 D.H.W. flowmeter
14 Hot water inlet filter
16 3 BAR (43.5 psi) safety valve
17 Pressure transducer
18 By-pass
19 Boiler discharge
20 Expansion vessel
21 Condensate drain tap
22 Fixing jig
23 D.H.W. cock (optional)
24 Gas cock (optional)
25 C.H. flow cock (optional)
26 C.H. return cock (optional)
CONNECTIONS
R
C.H. return
M
C.H. flow
G
Gas connection
E
D.H.W. inlet
U
D.H.W. outlet
S3
Condensation outlet
Fig. 2
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