TAC AB, 1999-08-18
0-004-7516-1 (GB), 2:5 (8)
TAC Xenta 102 Handbook
The zone controller TAC Xenta 102
2.3.3 Air flow control with modulating valve water reheat
(TAC Xenta 102-VF)
The controller controls the zone temperature by sequence control-
ling the air flow controller (VAV-Compact) and the heating coil.
The air flow is minimum and maximum limited. The heating
sequence controls the valve and minimum limits the air flow.
2.3.4 Air flow control with modulating valve water reheat and fan
(TAC Xenta 102-VF)
The controller controls the zone temperature by sequence control-
ling the air flow controller (VAV-Compact) and the heating coil.
The airflow is minimum and maximum limited. The heating com-
bines the valve control with the fan to increase the air circulation
through the heating coil.
Window
contact
Heating
water coil
Wall
module
Occupancy
sensor
Carbon dioxide
sensor
Figure 2.4 Control application for TAC Xenta 102-VF
Valve and
actuator
Damper and air
flow controller
Occupancy
sensor
Window
contact
Wall
module
Carbon dioxide
sensor
Fan
Figure 2.5 Control application for TAC Xenta 102-VF
Damper and air
flow controller
Valve and
actuator
Heating
water coil
