4.2.4
Hydraulic circuit
Expansion vessel
1
Primary heat exchanger
2
Safety thermostat (overheating) 105°C
3
Primary exchanger flow sensor
4
Secondary exchanger
5
Boiler drain valve
6
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LEGEND
3-bar safety valve
7
Hot water flow meter
8
Modulating circulation pump with deaerator
9
3-way diverter valve motor
10
Primary exchanger inlet sensor
11