1.4
OPERATING DIAGRAM (fig. 2)
1
3
M
2
21
R
26
42
11
9
10
8
5
19
30
S3
20
7
G
29
KEY
1 Cascade supply probe (SMC)
2 Hydraulic compensator
3 ----------
5 Condensation drain siphon
6 Gas valve
7 ----------
8 Fan
9 Heating supply probe (SM)
10 Safety thermostat 100°C
11 Exhaust probe (SF)
12 Primary exchanger
14 Heating return probe (SR)
15 Water pressure transducer
16 Air release vent
17 Check valve
18 Pump high efficiency
12
16
14
15
6
18
24
27
17
23
25
22
19 ----------
20 ----------
21 ----------
22 3-way drain tap
23 System supply tap
24 Single module drain
25 Gas tap
26 8 litre expansion tank
27 Safety valve 5 bar
29 ----------
30 Antifreeze siphon sensor (SB/SA)
FIXTURES
M System supply
R
System return
G
Gas
S3 Condensation drain
Fig. 2