aci DUCT Series User manual

Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 1
Version: 2.0
I0000810
FIGURE 1: ENCLOSURE
DIMENSIONS
DUCT SERIES
Installation & Operation Instructions Phone: [phone]
Website: workaci.com
PRECAUTIONS
• DO NOT RUN THE WIRING IN ANY CONDUIT
WITH LINE VOLTAGE (24/120/230 VAC).
GENERAL INFORMATION
The Duct sensor is a single point temperature
sensor that is designed for use with electronic
controllers in commercial heating and cooling
building management systems. It is available
with multiple thermistor or RTD options.
For optimal temperature readings, 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.
MOUNTING INSTRUCTIONS
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.
3.88"
(98.60 mm) 2.19"
(55.69 mm)
2.55"
(64.77 mm)
3.70"
(93.980 mm)
NEMA -4X (-4X)
BELL BOX (-BB)
2.95"
(75.00 mm)
2.34"
(59.38 mm)
4.72"
(119.83 mm)
PLASTIC BOX (-PB)
3.60"
(91.44 mm)
2.25"
(57.15 mm)
4.79"
(121.55 mm)
2.35"
(59.80 mm)
GALVANIZED ENCLOSURE (-GD)
4.20"
(106.68 mm)
3.88"
(98.60 mm)
2.41"
(61.21 mm) 1.78" (45.18 mm)
0.61"
(15.49 mm)
3.88"
(98.60 mm)
0.98"
(24.89 mm)
WITHOUT BOX (-DO)

Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 2
Version: 2.0
I0000810
MOUNTING (Continued)
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. Refer to the Wiring Instruc-
tions (p. 2-3) to make necessary connections.
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.
0.375"
(9.525 mm)
FIGURE 3: MOUNTING FOR DIFFERENT CONFIGURATIONS
FIGURE 2: DUCT MOUNTING
-PB -GD -BB -4X -DO
1.51"
(38.25 mm)
1.59"
(40.39 mm) 1.54"
(39.12 mm)
1.54"
(39.12 mm)
3.01"
(76.51 mm)
3.18"
(80.77 mm)
3.08"
(78.23 mm)
3.08"
(78.23 mm)
1.54"
(39.12 mm)
3.08"
(78.23 mm)
WIRING INSTRUCTIONS
Open the cover of the enclosure. ACI recommends 16 to 26 AWG twisted pair wires or shielded cable for all
sensors. Signal wiring must be run separate from low and high voltage wires (24/120/230VAC). All ACI thermis-
tors and RTD temperature sensors are both non-polarity and non-position sensitive. All thermistor type units
are supplied with (2) ying lead wires, and all RTD’s are supplied with (2) or (3) ying lead wires – see FIGURE
4 (below). The number of wires needed depends on the application.
THERMISTOR OR
RTD 2WIRE
WIRE NUT
RTD 3WIRE
SAME COLOR WIRES
WIRE NUT
WIRING FROM CONTROLLER
ANALOG INPUT
WIRING FROM CONTROLLER
ANALOG INPUT
3-WIRE RTD WIRING2-WIRE THERMISTOR or RTD WIRING
FIGURE 4: TEMPERATURE WIRING

WARRANTY
The ACI Duct Series temperature sensors are covered by ACI’s Five (5) Year Limited Warranty, which is located in
the front of ACI’S SENSORS & TRANSMITTERS CATALOG or can be found on ACI’s website: www.workaci.com.
W.E.E.E. DIRECTIVE
At the end of their useful life the packaging and product should be disposed of via a suitable recycling
centre. Do not dispose of with household waste. Do not burn.
TROUBLESHOOTING
PROBLEM
Sensor reading is incorrect
Sensor reads infinity/very high resistance
Sensor reads low resistance
Erratic readings
SOLUTION(S)
•Verify sensor wiring to controller is not damaged and has continuity.
•Verify sensor or wires are not shorted together.
•Verify controller is setup for correct sensor curve.
•Disconnect wires from sensor terminal block, tighten terminal block
screws down, and take a resistance (ohm) reading with a multimeter.
•Compare the resistance reading to the Temperature Vs Resistance
Curves online: http://www.workaci.com/content/thermistor-curves-0
•Verify proper mounting location to conrm no external factors are
aecting reading.
•Sensor or wires are open.
•Sensor or wires are shorted together.
•Condensation on PCB board
•Bad wire connections.
Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 3
Version: 2.0
I0000810
WIRING INSTRUCTIONS (Continued)
Connect thermistor/RTD wire leads to controller analog input wires using wire nuts, terminal blocks, or
crimp style connectors. All wiring must comply with all local and National Electric Codes. After wiring,
attach the cover to the enclosure.
Note: When using a shielded cable, be sure to connect only (1) end of the shield to ground at the
controller. Connecting both ends of the shield to ground may cause a ground loop. When
removing the shield from the sensor end, make sure to properly trim the shield to prevent any
chance of shorting.
Note: If the controller requires a (2) wire input for a RTD, connect the (2) common wires (same
color) together. If the controller requires (3) wires, use (3) individual wires.

PRODUCT SPECIFICATIONS
Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 4
Version: 2.0
I0000810
One
-40 to 80 °C (-40 to 185 °F)
10 to 95% RH, non-condensing
304 Stainless Steel | 0.250”(6.35 mm)
22 AWG (0.65 mm)
“-GD” Enclosure: Galvanized Steel, -40 to 115 °C (-40 to 239 °F), NEMA 1 (IP10)
“-PB”Enclosure: ABS Plastic, UL94-HB, -30 to 90 °C (-22 to 194 °F), Plenum Rated
“-BB”Enclosure: Aluminum, -40 to 115 °C (-40 to 239 °F), NEMA 3R (IP 14)
“-4X”Enclosure: Polystyrene Plastic, UL94-V2, -40 to 70°C (-40 to 158°F), NEMA 4X (IP 66)
“-DO”No Enclosure: Polyamide 66 (High Performance Nylon), -40 to 115 °C (-40 to
239 °F), UL94-HB
A/CSI: 10 KΩ nominal (Green/Yellow)
A/10KS: 10 KΩ nominal (White/Blue)
A/10K-E1: 10 KΩ nominal (Gray/Orange)
A/20K: 20 KΩ nominal (Brown/Blue)
A/100KS: 100 KΩ nominal (Black/Yellow)
A/10K-E1 Series: +/- 0.3 °C (+/- 0.54 °F)
All Else: +/- 0.2 °C (+/- 0.36 °F)
A/1K: 1 KΩ nominal
@ 115 °C (239 °F): +/- 0.38 °C (+/- 0.69 °F)
@ 54.4 °C (130 °F): +/- 0.56 °C (+/- 1. 00°F)
@ 121 °C (250 °F): +/- 1.25 °C (2.25 °F)
SENSOR NON-SPECIFIC INFORMATION
Number Sensing Points:
Storage Temperature Range:
Operating Humidity Range:
Probe Material | Diameter:
Wire Size
Enclosure Specifications:
(Temperature, Material,
Flammability, NEMA/IP Ratings)
THERMISTOR
THERMISTOR
Sensor Output @ 25 °C (77 °F):
(Lead Wire Colors)
*Does not include CL2P
Accuracy @ 0-70 °C (32 - 158 °F):
PLATINUM
Sensor Output @ 0 °C (32 °F):
Accuracy:
BALCO
Sensor Output @ 21.1 °C (70 °F):
(Lead Wire Colors)
Accuracy:
NICKEL
Sensor Output @ 21.1 °C (70 °F):
(Lead Wire Colors)
Accuracy:
A/1.8K: 1.8 KΩ nominal (Red/Yellow)
A/3K: 3 KΩ nominal (White/Brown)
A/AN (Type III): 10 KΩ nominal (White/White)
A/AN-BC: 5.238 KΩ nominal (White/Yellow)
A/CP (Type II): 10 KΩ nominal (White/Green)
A/1.8K Series: +/- 0.5 °C @ 25 °C (77 °F)
and (+/-1.0 °C) (+/-1.8 °F)
A/100: 100 Ω nominal
+/- 0.06% Class A (Tolerance Formula: +/- °C = (0.15 °C + (0.002 * |t|))
where |t| is the absolute value of Temperature above or below 0 °C in °C)
@ -40 °C (-40 °F): +/- 0.23ºC (+/- 0.414ºF)
@ 0 °C (32 °F): +/- 0.15 °C (+/- 0.27 °F)
1 KΩ nominal (Orange/Yellow)
@ 21.1 °C (70 °F): +/- 1%
1 KΩ nominal (Red/Red)
@ -40 °C (-40 °F): +/- 1.52 °C (+/- 2.73 °F)
@ 0 °C (32 °F): +/- 0.4 °C (+/- 0.72 °F)
@ 21.1 °C (70 °F): +/- 0.17 °C (+/- 0.34 °F)