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Heating circuit extension module (accessories)
PCB HKK 2.01
Fig. 64
Only left slot: Connection to the PCB of the boiler
s-Ö
control unit
dYÖ
Pump, heating circuit 1
Valve, heating circuit 1
dYA
Pump, heating circuit 2
dXÖ
Note
The slot assignment of this PCB may differ subject to
the system version.
System-specific assignment:
"Heating circuit extension module" installation
instructions
Connection and wiring diagram
Valve, heating circuit 2
dXA
dCÖ
Circulation pump for cylinder heating
or pump, heating circuit 3
or solar circuit pump
DHW circulation pump (Y2)
dCA
97
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