Combined Heating And Cooling Modes; Combined Heating And Cooling Modes - Switchover Of Heating/Cooling; Combined Heating And Cooling Modes - Operating Mode After Reset - ABB i-bus KNX Product Manual

11.5.73 Combined heating and cooling modes

Note
Only available when the "Device function" parameter is set on either "Single
device" or "Master device" and the control function parameter is set on either
"Heating and cooling" or "Heating and cooling with additional stages".
11.5.74 Combined heating and cooling modes — Switchover of heating/cooling
Options:
This function makes it possible to switch between the heating and cooling mode of the device.
Automatic : E.g. for four-conductor systems which allow the switchover between heating and
–
cooling at all times. The device switches automatically between heating and cooling and to
the associated setpoint. "Switchover heating/cooling" is a transmitting object.
Only via object : E.g. for two-conductor systems which are operated in heating mode in the
–
winter and cooling mode in the summer. The switchover between heating and cooling and to
the associated setpoint is carried out via the corresponding communication object. This
function is used when a central switchover of the single room controllers is required.
"Switchover heating/cooling" is a receiving object.
– Local/ via extension unit and via object : E.g. for four-conductor systems which allow the
switchover between heating and cooling at all times. The switchover between heating and
cooling and to the associated setpoint is carried out manually on the device by the user of
the room or via the "Switchover heating/cooling" object via the bus. "Switchover
heating/cooling" is a transmitting and receiving object.
11.5.75 Combined heating and cooling modes — Operating mode after reset
Options:
After a bus voltage failure, a system reset, or the attachment of a device to the bus coupler, the
device starts in the parameterized "Operating mode after reset". The operating mode can be
changed when the system is running using the options set under "Switchover heating/cooling".
Product manual 2CKA001473B9482
Description of application and parameters
Automatic
Only via object
On-site/via extension unit and via object
Cooling
Heating
Application "Function block RTC"
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