8
2 4 Water circuit
2 4 1 Water circuit without internal diverter valve
9
4
1
2
3
6
7
8
13
5
UF
IA
IG
RR
MR
11
10
T
12 L
T/F
T
H
P
Fig. 3
1 Exchanger
2 Pump
3 Fan
4 Air vent valve
5 Differential/minimum pressure switch
6 Flue gas temperature probe
7 Heating probe (delivery)
8 Heating probe (return)
9 Internal expansion tank (optional)
10 3,5 bar safety valve
11 Drain cock
12 Water/air separator
13 Safety thermostat
2 4 2 Water circuit with internal diverter valve
10
4
1
2
3
6
7
8
14
5
UF
IA
IG
RR
MR
12
11
T
13 L
9
T/F
T
H
P
Fig. 4
1 Exchanger
2 Pump
3 Fan
4 Air vent valve
5 Differential/minimum pressure switch
6 Flue gas temperature probe
7 Heating probe (delivery)
8 Heating probe (return)
9 Internal diverter valve
10 Internal expansion tank (optional)
11 3,5 bar safety valve
12 Drain cock
13 Water/air separator
14 Safety thermostat
