﻿This parameter is used to set which FanCoil system is to be used in the system.
The FanCoil system can be a device that is operated in a single operating mode, either heating only or cooling only. There is thus no option of changing between heating and cooling.

In combined heating/cooling operating mode, the device can either heat or cool. Change-over of the operating mode is performed via the communication object "Heating/cooling - Changeover", which exists for each fan coil channel. The source of the telegram for operating mode change-over can be either any desired central switching point (e. g. building HVAC controller) or the internal or an external room temperature controller, from which the command values are also generated.

Four-pipe heating/cooling by means of command value specification: In this type of FanCoil system, the device can be used either for heating or cooling in the combined operating mode. The change-over of the operating mode is performed directly via the command value objects of a fan coil channel. There is no separate communication object for the change-over.
