ABB SLTA Option Card Serial LonTalk Datasheet download pdf (Page 60)

Zone Controllers

TAC Xenta 103-A

Chilled Ceiling Controller

Lo n Ma r k

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

o n Wo r k s

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

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

o n Wo r k s

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

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

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

CAT-VISTA-A4.indd 54 6/18/2009 1:48:43 PM

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ABB SLTA Option Card Serial LonTalk Datasheet Page 60

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