52 / 102
52
Zone Controllers
L
ON
M
ARK
®
certified individual room controller for VAV applications (Variable
Air Volume flow) connected to an external air flow sensor (TAC GV). The
controller is intended primarily for VAV cooling applications with one or two
stages of reheating. The controller keeps a constant temperature in the zone
by controlling the air flow and heating stages. By using a carbon dioxide sen-
sor, the air quality can be controlled in the zone. The controller can be oper-
ated stand-alone or within a L
ON
W
ORKS
®
network. PI control with individual
P-band and I-time setting for heating and cooling. Can be monitored and
parameters can be set centrally via the central system or remotely with the
TAC Xenta Operator Panel.
TAC Xenta 102-ES
VAV Controller
FUNCTIONAL FEATURES
•
Various applications:
Single-step control via external
air flow sensor and heating in
sequence. Heating operation by
modulating hot water radiator
valve.
•
Slave function mode of
operation and setpoint for
several slave controllers are
controlled by one master.
•
Setpoint adjustment via a wall
module with setpoint adjuster
or via a L
ON
W
ORKS
®
network
variable.
•
Seven modes of operation:
comfort, standby, bypass,
unoccupied, off, slave and
purge mode.
•
Air quality based adjustments.
•
Configurable limit values MIN
and MAX air flow limit.
•
Alarm monitoring high or
low room temperature, open
window, temperature sensor
error, etc.
•
Occupancy sensor, window
contact and cool-down
protection, CO
2
measurement
input.
SPECIFICATIONS
Operating voltage . . . . . . . . . . . . . 24 V AC ±20%
Power consumption . . . . . . . . . . . . 4 VA
Dimensions . . . . . . . . . . . . . . . . . . 127 x 126 x 50mm (5” x 5” x 2”)
Ambient temperature
Operation . . . . . . . . . . . . . . . . . . . 0°C to +50°C (32°F to 122°F)
Storage. . . . . . . . . . . . . . . . . . . . . . –20°C to +50°C (–4°F to 122°F)
Humidity . . . . . . . . . . . . . . . . . . . . max. 90% RH non-condensing
Enclosure rating . . . . . . . . . . . . . . . IP 30
Inputs and outputs
Window contact . . . . . . . . . . . . . . Digital input
Occupancy sensor . . . . . . . . . . . . . Digital input
Air damper . . . . . . . . . . . . . . . . . . 3-point output
Heating valve . . . . . . . . . . . . . . . . 3-point or on/off
Room temperature . . . . . . . . . . . . Thermistor input
Air flow sensor . . . . . . . . . . . . . . . Tube connection
CO
2
sensor . . . . . . . . . . . . . . . . . . 0 – 10 VDC
Wall module . . . . . . . . . . . . . . . . . As selected
Optional . . . . . . . . . . . . . . . . . . . . Temperature input
For further specifications, see technical data sheet.
DESCRIPTION
0-073-0537-0 TAC Xenta 102-ES VAV Controller valve reheat