Page 63 - Advanced Course

KNX ADVANCED COURSE

3 Fan Coil

3.1 Introduction

The term ‘fan coil’ implies a blower convector which is typically used for cooling rooms.
There are also areas of application in which the fan coil unit is also used for heating or
ventilation. Conventionally, a fan coil unit consists of a heater or cooling battery (coil) and
a fan. The cooling or heating capacity required in the respective room is however
produced centrally. It is then routed through the building via pipe systems and accessed
by each unit when required.

In general, one fan coil unit is installed per room and takes over the required temperature
control. One benefit of this technology is the rapid availability of heat energy or cooling
capacity. This technology is therefore widespread in hotels or office buildings for example.
It is controlled via a room thermostat using the control processes that have already been
described.

Fan coil convectors are available in different styles e.g. as wall-mounted or ceiling-
mounted devices as well as for insertion in floor boxes.

Figure 37: Fan coil styles: Source www.tca.ch, www.wolf-
heiztechnik.ch

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