TAC AB, 1999-08-18
0-004-7516-1 (GB), 2:1 (8)
TAC Xenta 102 Handbook
The zone controller TAC Xenta 102
2
The zone controller TAC Xenta 102
2.1
General
The zone controller TAC Xenta 102 is intended for “Variable
Air Volume” (VAV) applications in offices and other large
buildings. A VAV controller usually controls the temperature in
a given zone by controlling the volume sub-tempered air which
is supplied to the zone.
The controller’s basic functions
All controller models have a number of built-in functions which
handle the normal control situation. There are four operating
modes to choose from (comfort, economy, bypass, and off) and
five modes to force the controller (only heating allowed, only
cooling allowed, night cooling, auto, and off).
Measuring the zone temperature is made by means of a
permanent thermistor sensor or a temperature node connected
to the network, and setpoint calculation is made according to
special methods.
There is a detailed functional description of all the basic
functions in chapter 5.2.
More about functions
Apart from the controller’s basic functions, there are
additional possibilities to control the climate in the zone. In
section 5.3, these are described in detail, and also which
external functions that may be connected, e.g. window contact
sensor and occupancy sensor.
