1.4
FUNCTIONAL DIAGRAM (fig. 2)
4
1
G
1.5
MAIN COMPONENTS (fig. 3)
7
6
5
4
3
2
1
74
7
8
10
5
6
11
12
14
13
17
M
R
C
KEY
1
Gas valve
2
Condensate drain tap
4
Fan
5
C.H. flow sensor (SM)
6
Safety thermostat 95°C
7
Sensor fumes (SF)
8
Primary exchanger
10
C.H return sensor (SR)
2
11
Water pressure transducer
12
Air release vent
13
Pump system
S3
14
Boiler discharge
17
Safety valve 3.5 bar
CONNECTIONS
R
C.H. return
M
C.H. flow
G
Gas connection
S3
Condensation outlet
C
Filling system
R3
D.H.W. tank return
R3
8
KEY
1
Control panel
9
2
Safety thermostat
3
C.H. flow sensor (SM)
4
Ignition transformer
5
Ignition electrode
6
Primary exchanger
7
Air release vent
8
Sensor fumes (SF)
9
Detection electrode
10
Fan
11a Pump system fixed
10
11b Modulating pump system
11
Fig. 2
Fig. 3