ABB i-bus KNX Product Manual page 58

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ABB i-bus KNX
Parameters
7.4.1.2.7 —
Dependent parameter
Actuate additional-stage cooling via
This parameter is not visible if the Additional-stage cooling parameter is deactivated.
This parameter is not visible if the Actuator channel option has been selected in the Channel function
parameter.
Options:
The way the control value for the additional-stage cooling is to be output is set using this parameter.
The parameter options are dependent on the values selected in the Additional-stage heating, Actuate
basic-stage heating via, Actuate basic-stage cooling via and Actuate additional-stage heating via
parameters.
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Internal channel output (valve):
If the internal output is selected, the control value is output directly on this physical output where it is
converted into the corresponding output signal.
In parallel to the actuation via the corresponding internal output, the control value is also output via the
related Status Control value Additional-stage cooling KNX group object.
4-pipe system (selection in the Type of heating/cooling system parameter: 4-pipe):
Depending on the selection in the Actuate basic-stage heating via and Basic-stage cooling parameters,
it may not be possible to select all options. If one of the outputs has already been selected here, then it
cannot also be used as an output for the basic-stage cooling.
Example:
If the Internal channel output (valve) option has been selected as the output for the basic-stage heating,
this cannot be selected as the output for the additional-stage cooling.
2-pipe system (selection in the Type of heating/cooling system parameter: 2-pipe):
In a 2-pipe system, heating and cooling are undertaken using the same device.
Here it is possible that either the same valve is used for heating and cooling or that two valves are used
because the heat/cooling is output into the room via a dedicated heating/cooling coil. For this reason it is
therefore possible here to output the control values for heating and cooling on the same output.
In parallel to the actuation via the corresponding internal output, the control value is also output via the
related Status Control value Basic-stage heating group object.
56 2CDC508220D0211 Rev. A | VC/S 4.x.1
Internal channel output (valve)
Group object
Note