7
G
M
R
R3
8
12
3
11
13
14
17
1
2
S3
4
6
5
7
1.4
FUNCTIONAL DIAGRAM (fig. 2)
Fig. 2
KEY
1 Gas valve
2 Condensate drain trap
3 Heating return sensor (SR)
4 Fan
5 Heating flow sensor (SM)
6 Safety thermostat 95°C
7 Exhaust probe (SF)
8 Primary heat exchanger
11 Water pressure transducer
12 Auto air vent
13 Pump
14 Drain vent
17 5 BAR safety valve
CONNECTIONS
R Heating return
M Heating flow
G Gas connection
S3 Condensation outlet
R3 D.H.W. Tank return
