Pcb 3: Sensors And Km Bus - Viessmann VITOCAL 300-A Installation And Service Instructions Manual

PCB 3: Sensors and KM BUS

e¢Q KM BUS
e¢W Heating water buffer cylinder
e¢E Outside temperature
e¢R DHW cylinder, top
e¢T DHW cylinder, bottom
Connection and wiring diagrams
e¢Z Flow, heating circuit with
mixer M2
e¢U System flow (downstream of the
heating water buffer cylinder or
external heat source)
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