IT
ES
1.4
OPERATING DIAGRAM
GB
64
KEY
1 Cascade supply probe
2 Hydraulic compensator
3 Thermometer
4 Cascade return probe
5 Condensation drain siphon
6 Gas valve
7 3.5 BAR safety valve
8 Fan
9 Heating probe (SM)
10 Safety thermostat 95°C
11 Exhaust thermostat
12 Primary exchanger
13 Diaphragm
14 Differential pressure switch
15 Water pressure transducer
16 Air escape valve
17 Check valve
18 Distributor
19 0-6 BAR pressure gauge with tap
20 4 BAR water pressure switch
21 Safety thermostat 100°C
22 3-way drain tap
23 System supply tap
24 Single module drain
25 Gas tap
26 8 litre expansion tank
27 4 BAR safety valve
28 Water trap frost sensor
FIXTURES
M System supply
R
System return
G
Gas
S3 Condensation drain
Fig. 2