aci DUCT Series Installation & Operation Instructions

DUCT SERIES TEMPERATURE
TRANSMITTER
Installation & Operation Instructions

GENERAL INFORMATION

The ACI Duct Series sensors and transmitters are
single point sensors that output 4-20 mA with an
optional voltage signal output of 1-5VDC or
2-10VDC signal to BAS or controller. All ACI/TT and
TTM temperature transmitters can be powered
from either an unregulated or regulated 8.5 to 32
VDC power supply.

MOUNTING INSTRUCTIONS

For optimal temperature measurement, follow
these tips:
• Duct probe should be placed (3) to (4) duct
segments down from any bend or obstructions
and away from 90° bends.
• Mount the sensor on the top or sides of duct
work; mounting on the bottom risks damage
due to moisture.
• The sensor should be mounted in the middle of the
duct where air circulation is well mixed (no
strati cation), and not blocked by obstructions.
Strati cation and obstructions can cause sensing
errors. An example is downstream from a heating
or cooling coil.
Drill a 3/8" hole in the duct and insert the probe
through the hole until the foam pad is tight to the
duct. Drill pilot holes for the (2) mounting screws. Use
the enclosure ange as a guide, or use the
dimensions listed below to measure out.
Now fasten and insert (2) screws #8 x 3/4" TEK
(provided and recommended) through the
mounting holes in the ange and tighten until the
unit is held rmly to the duct. Make sure the foam
pad is tight to the duct to eliminate any possible
air leaks.
Note: All enclosures have the foam pad attached. For
the "DO" (no enclosure), the foam pad is included, but
not installed. The foam pad must be installed prior to
mounting.

WIRING INSTRUCTIONS

PRECAUTIONS

• Transmitter is powered by 24 VDC only.
• Remove power before wiring. NEVER connect or disconnect wiring with power applied.
• When removing the shield from the sensor end, make sure to properly trim the shield to prevent any
chance of shorting.
Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: 1-888-967-5224 | Website: workaci.com
FIGURE 1: ENCLOSURE
DIMENSIONS
PLASTIC BOX (-PB)
3.60"
(91.44 mm)
2.25"
(57.15 mm)
GALVANIZED (-GD)
3.88"
(98.60 mm)
2.41"
(61.21 mm)
BELL BOX (-BB)
2.95"
(75.00 mm)
NEMA 4X (-4X)
3.88"
(98.60 mm)
2.55"
(64.77 mm)
VAC
Page 1
Phone: 1-888-967-5224
Website: workaci.com
1.51"
(38.25 mm)
2.35"
3.01"
(59.80 mm)
(76.51 mm)
1.54"
(39.12 mm)
1.78"
(45.18 mm)
1.59"
(40.39 mm)
2.34"
(59.38 mm)
(80.77 mm)
1.54"
(39.12 mm)
2.19"
(55.69 mm)
Version: 1.0
I0000855
3.08"
(78.23 mm)
3.18"
3.08"
(78.23 mm)