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ABB i-bus KNX
3.2.3.1
HVAC system –
1 Control value/2-pipe
© 2010 ABB STOTZ-KONTAKT GmbH
Commissioning
If option 1 Control value/2-pipe is selected, additional parameters appear:
Valve COOLING independently usable
This parameter serves as a note or remark.
Valve COOLING
The cooling valve can be used additionally and independently via
the communication object Control value COOLING (extra!).
The valve COOLING is not monitored in the process.
Valve HEATING
Via communication object Control value HEATING/COOLING
the valve HEATING and the fan are controlled.
For further information see:
page 124
Operation HEAT/COOL after
bus voltage recovery
Options:
unchanged
HEATING
COOLING
Using this parameter the reaction after bus voltage recovery is set.
unchanged: After bus voltage recovery the state which existed before
bus voltage failure is set.
HEATING: After bus voltage recovery the HEATING state is set.
COOLING: After bus voltage recovery the COOLING state is set.
Configuration of a HVAC system with Fan Coil
units,
29
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