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Zone Controllers
TAC Xenta 103-A
Chilled Ceiling Controller
L
ON
M
ARK
®
certified individual room controller for chilled ceiling applications.
The controller keeps a constant temperature by modulating the cold water
flow to the ceiling elements, the hot water flow to the radiators, and the air
flow through the damper. The controller can be operated on a stand-alone
basis 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 via the TAC Xenta Opera-
tor Panel. Air-quality based adjustments when a CO
2
sensor is connected.
FUNCTIONAL FEATURES
•
Various applications:
Room temperature control
via chilled ceiling, in sequence
with damper and radiator valve
modulating the hot water.
Choice of heating/cooling, only
heating or only cooling (water
and/or air).
•
Slave function mode of
operation and setpoint for
several slave controllers are
controlled by one master
controller.
•
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.
•
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/hygrostat . . . . . Digital input
Occupancy sensor . . . . . . . . . . . . Digital input
Cooling valve . . . . . . . . . . . . . . . . 0 – 10 VDC
Air damper . . . . . . . . . . . . . . . . . . 0 – 10 VDC
Heating valve . . . . . . . . . . . . . . . . 3-point or on/off
Room temperature . . . . . . . . . . . . Thermistor input
CO
2
sensor . . . . . . . . . . . . . . . . . . 0 – 10 VDC
Wall module. . . . . . . . . . . . . . . . . As selected
For further specifications, see technical data sheet.
DESCRIPTION
0-073-0561-0 TAC Xenta 103-A Chilled Ceiling Controller