7 Service connector / computer connection
8 Control panel
9 Fan supply
10 Storage parameter
11 Flow sensor
12 Heat exchanger sensor
13 Return sensor
14 Hydraulic pressure sensor
15 Air pressure differential switch
16 Flue gas sensor
17 Fan control
18 Gas valve 1
19 Gas valve 2
20 Standard PCB
21 L-bus connections for additional PCBs
12 Technical specifications
7701838 - v.09 - 10122021
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