1.4
FUNCTIONAL DIAGRAM (fig. 2)
7
5
6
4
2
S3
1.5
MAIN COMPONENTS (fig. 3)
6
5
4
3
2
1
62
1
13
17
M
R
G
KEY
1 Gas valve
8
2 Condensate drain tap
3 C.H return sensor (SR)
12
4 Fan
5 C.H. flow sensor (SM)
3
6 Safety thermostat 100°C
7 Sensor fumes (SF)
8 Primary exchanger
11 Water pressure transducer
12 Air release vent
13 Pump high efficiency
14 Boiler discharge
17 Safety valve 5 bar
11
CONNECTIONS
R
C.H. return
M
C.H. flow
G
Gas connection
S3
Condensation outlet
R3
D.H.W. tank return
14
R3
7
8
9
10
11
12
13
KEY
Control panel
1
Fan
2
Ignition electrode
3
4 Primary exchanger
5 Ignition transformer
Sensor fumes (SF)
6
Air release vent
7
C.H return sensor (SR)
8
C.H. flow sensor (SM)
9
Safety thermostat 100°C
10
Detection electrode
11
Pump high efficiency
12
Fig. 2
Fig. 3