Installation and Operation Instructions
ACI/TUCH Room Unit
GENERAL INFORMATION
WIRING INSTRUCTIONS
The ACI/TUCH Room Unit is factory-configured to
support your specific requirements.
The number of wires needed to connect the ACI/TUCH
Room Unit to a controller depends on the application.
Most applications require five wires to support the
temperature output, the set point output, the RH output,
power, and ground (common); although some
applications will require additional wires. All signals
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.
CAUTION
•
CHECK THAT THE ACI/TUCH ROOM UNIT IS
CORRECTLY CONFIGURED FOR THE
APPLICATION; CONTACT ACI IF YOU ARE
UNSURE.
•
THE ACI/TUCH ROOM UNIT IS A PRECISION
INSTRUMENT; PLEASE HANDLE IT WITH
CARE!
WIRING DIAGRAM
RH/FAN
RH signal to controller.
OFB
Occupied feedback signal from controller.
COM (-)
Ground or signal common, 20-28Vac (-).
POWER (+)
+15 to +30VDC, or 20-28Vac (+). See notes.
SEN
Temperature sensor signal to controller.
SET
Set point temperature signal to controller.
OR
Override signal to controller. See notes.
AUX
Auxiliary signal to/from controller. See notes.
MOUNTING INSTRUCTIONS
Separate the cover from 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.
WARNING
•
REMOVE POWER BEFORE WIRING! NEVER
CONNECT OR DISCONNECT WIRING WITH
POWER APPLIED. DO NOT ALLOW LIVE
WIRES TO TOUCH THE CIRCUIT BOARD!
CAUTION
•
WIRING MUST COMPLY WITH APPLICABLE
LOCAL AND NATIONAL ELECTRICAL
REGULATIONS.
NOTES:
1. The OR signal can be factory configured to short the SEN or SET terminals
to COM(-) to eliminate the need for a wire jumper between terminals OR and
SEN or SET outputs.
•
DO NOT RUN THE ACI/TUCH ROOM UNIT
WIRING IN ANY CONDUIT WITH MAINS
POWER SYSTEM WIRING.
2. If the ACI/TUCH Room Unit has any output configured as 0-10V or 2-10V,
the voltage at the POWER(+) terminal must be at least +18VDC.
3. The AUX output/input is normally not used. For special applications, the
AUX output/input can be factory configured to support various functions.
•
ACI RECOMMENDS USING A SEPARATE UL-
LISTED CLASS 2 TRANSFORMER WHEN
POWERING THE ACI/TUCH ROOM UNIT
WITH 24VAC! 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.
2305 Pleasant View Rd.
●
Middleton Industrial Park
●
Middleton, WI 53562
PHONE (608) 831-2585
●
FAX (608) 831-7407
I0000493 REV 1 06/09/2008
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