aci TUC Installation and Operation Instructions

Brand: aci

Model: TUC

Type: Installation and Operation Instructions

utomation

omponents

nc.

Installation and Operation Instructions

ACI/TUC Room Unit

PLEASE READ INSTRUCTIONS CAREFULLY BEFORE INSTALLATION!

GENERAL INFORMATION

• FAILURE TO WIRE DEVICES WITH THE

CORRECT POLARITY WHEN USING A

SHARED TRANSFORMER MAY RESULT IN

DAMAGE TO ANY DEVICE POWERED BY

THE SHARED TRANSFORMER.

The ACI/TUC Room Unit is factory-configured to

support your specific requirements.

CAUTION

• CHECK THAT THE ACI/TUC ROOM UNIT IS

CORRECTLY CONFIGURED FOR YOUR

APPLICATION; CONTACT ACI IF YOU ARE

UNSURE.

WIRING INSTRUCTIONS

The number of wires needed depends on the application,

with 4 wires minimum and 8 wires maximum required

to support the functions of the ACI/TUC Room Unit.

Generally, one wire is required for each function, one

wire for power, and one wire for ground. All functions

are common ground referenced. ACI recommends 16-

22 AWG twisted pair wires or shielded cable for all

sensor installations. Be sure to connect the cable

shield to the ground at the controller ONLY.

• THE ACI/TUC ROOM UNIT IS A PRECISION

INSTRUMENT; PLEASE HANDLE IT WITH

CARE!

MOUNTING INSTRUCTIONS

Separate the cover from the base. If your application

includes a communications jack, please refer to the

communications wiring instructions document before

mounting the base. Attach the base directly to drywall,

or to a standard 2” x 4” junction box using the mounting

hardware provided. Refer to the wiring instructions to

make the necessary connections. After wiring, attach

the cover to the base and turn the (2) hex-screws at the

bottom of the base until the cover cannot be removed.

WIRING DIAGRAM

FAN

Fan speed signal to controller.

Override signal to controller. See notes.

SET

Setpoint temperature signal to controller.

SEN

Temperature sensor signal to controller.

COM (-)

Ground or signal common, 24Vac (-).

OFB

Occupied feedback signal from controller.

AUX

Auxiliary signal to controller.

POWER (+)

+15 to +30VDC, or 24Vac (+). See notes.

WARNING

• REMOVE POWER BEFORE WIRING!

NEVER CONNECT OR DISCONNECT

WIRING WITH POWER APPLIED. DO NOT

ALLOW LIVE WIRES TO TOUCH THE

CIRCUIT BOARD!

CAUTION

• DO NOT RUN THE ACI/TUC ROOM UNIT

WIRING IN ANY CONDUIT WITH LINE

POWERED WIRING.

NOTES:

• IF THE ACI/TUC ROOM UNIT IS POWERED

BY 24VAC, THE 24VAC POWER AND

GROUND WIRES SHOULD BE RUN IN A

SEPARATE CABLE FROM SIGNAL WIRES.

SEPARATE THE POWER CABLE FROM THE

SIGNAL CABLE BY AT LEAST 6 INCHES

ALONG THE ENTIRE WIRING RUN.

1. Override may be factory configured to function on the SEN or SET terminals to

eliminate the need for a wire jumper between terminals OR and the SEN or the

SET outputs.

2. If your ACI/TUC Room Unit has any output configured as 0-10V, 2-10V,

0-20mA, or 4-20mA, the voltage at the POWER (+) terminal must be at least

+18VDC.

3. If your ACI/TUC Room Unit is configured for +5VDC operation, apply a DC

voltage within the range of +4.75VDC to +5.25VDC to the POWER (+) terminal;

any voltage outside this range may damage the ACI/TUC Room Unit or cause

improper operation.

• ACI RECOMMENDS USING AN ISOLATION

TRANSFORMER WHEN POWERING THE

ACI/TUC ROOM UNIT WITH 24VAC!

4. Units configured with the fan speed option will have terminals for the FAN and

AUX signals. Units without the fan speed option will not have terminals loaded at

these locations.

2305 Pleasant View Rd. ● Middleton Industrial Park ● Middleton, WI 53562

PHONE (608) 831-2585 ● FAX (608) 831-7407

A030306-22 REV 4 4/29/2004 Page 1 of 2

utomation

omponents

nc.

Installation and Operation Instructions

ACI/TUC Room Unit

KEY PAD

The ACI/TUC Room Unit has three keypad layouts: 2-

keys including UP and DOWN, 3-keys including UP,

DOWN, and OVERRIDE, and 4-keys including UP,

DOWN, OVERRIDE, and MODE. If your ACI/TUC

Room Unit has the MODE key, please note that the UP

and DOWN keys perform different functions depending

on the mode of operation. Refer to the fan control

option instructions (A030306-47) for details.

O/R

MODE

O/R KEY (OPTIONAL):

Override key.

DOWN KEY:

Setpoint temperature adjust key. Also, fan

speed adjust key on units equipped with the

fan control option.

UP KEY:

Setpoint temperature adjust key. Also, fan

speed adjust key on units equipped with the

fan control option.

MODE KEY (OPTIONAL):

Puts the ACI/TUC Room Unit into fan

speed adjust mode on units equipped

with the fan control option.

DISPLAY

The ACI/TUC Room Unit display response depends on

the configuration of your unit and the mode of

operation.

Setpoint

Med

Low

Auto

Occupied

Fan

Off

°F

°C

ACI/TUC Room Unit Display

Icons indicate the current status of the

ACI/TUC Room Unit.

The ACI/TUC Room Unit displays

the room temperature and setpoint on

the large 7-segment digits, while the

optional fan speed and other status

information is displayed using icons.

OPERATION

The following diagrams show the operational modes of

the ACI/TUC Room Unit.

Occupied

°F

Optional occupied indication from

controller.

Normally, the ACI/TUC Room Unit shows

the room temperature. The ACI/TUC

Room Unit returns to this screen 5 seconds

after the last key-press activity.

Room temperature display

Setpoint

°F

Setpoint temperature display

When the UP or DOWN keys are pressed,

the ACI/TUC Room Unit shows the

current setpoint temperature.

Temperature setpoint icon.

SETPOINT TEMPERATURE DISPLAY

OPERATION

The ACI/TUC Room Unit normally displays the room

temperature. When the UP or DOWN key is pressed,

the word “Setpoint” appears and the current setpoint

temperature is displayed. Additional UP or DOWN key

presses increment or decrement the setpoint

temperature, while continuously depressing the UP or

DOWN key auto-increments or auto-decrements the

setpoint temperature. The display continues to show the

current setpoint temperature for 5 seconds after the last

UP or DOWN key press and then returns to the room

temperature display.

2305 Pleasant View Rd. ● Middleton Industrial Park ● Middleton, WI 53562

PHONE (608) 831-2585 ● FAX (608) 831-7407

A030306-22 REV 4 4/29/2004 Page 2 of 2

aci TUC Installation and Operation Instructions

aci TUC Installation and Operation Instructions

aci TUC Installation and Operation Instructions

Related papers

Other documents