0020308118_05 Installation and maintenance instructions 103
7 Flow temperature sensor
8 Surface-mounted thermostat/Burner off
9 24 V DC room thermostat
10 Bus connection (system control/digital room thermo-
stat)
11 Water pressure sensor
12 Prioritising diverter valve
13 Impeller water flow sensor
14 Connection temperature sensor for the domestic hot
water
15 Ignition transformer
16 Ignition electrode
17 Control electrode
18 Outdoor temperature sensor, flow temperature
sensor (optional, external), DCF receiver
19 Circulation pump remote control
20 Control module
21 Communication unit
22 Internal pump
23 230 V power supply, fan
24 Main power supply
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