aci HAZARDOUS ROOM Series Installation instructions

Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 1
Version: 2.0
I0000816
HAZARDOUS ROOM 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 ACI Hazardous Room Sensor is a single
point wall mounted temperature sensor that is
designed for use with electronic controllers in
commercial and industrial heating and cooling
building management systems. It is available
with multiple thermistor or RTD options.
Hazardous Room sensors come standard with a
heavy-duty Copper-Free Aluminum Connection
Head that meets Class I, Division 1 & 2, Group A,
B, C, D; Class II, Division 1, Groups E, F, G; Class II,
Division 2, Group F & G; class III standards.
For optimal temperature measurement,
follow these tips:
• Do not install on external walls.
• Do not install near heat sources. eg: lamps,
radiators, direct sunlight, copiers, chemney
walls, walls concealing hot-water pipes.
• Avoid air registers, diusers, vents and
windows
ASSEMBLY INSTRUCTIONS
The enclosure and probe assembly are shipped
separately. Insert the lead wires through the
threaded hole on the explosion proof enclosure.
Thread the probe tting into the hole and fasten
tightly with channel lock pliers/wrench.
Note: If a NIST certied sensor is ordered, the
sensor probe serial number must be paired with
the enclosure serial number.
MOUNTING INSTRUCTIONS
This product must be installed by a trained
professional with knowledge of local codes
and regulations. Before carrying out any work,
ensure local regulations and site procedures are
followed to maintain the overall certication of
the sensor. The sensor should be mounted in an
area where air circulation is well mixed and not
blocked by obstructions.
For mounting on a wall, ACI recommends a height
of 48-60” (1.2-1.5 m) o the ground and at least
1.5’ (0.5 m) from the adjacent wall. Remove the
cover from the housing by twisting o the cover.
Attach the base directly to the wall. Mounting
holes are located at the corners of the housing
– see FIGURE 1 (above). Seal ttings, intrinsically
safe barriers, and explosion proof ex ttings are
not provided by ACI.
Drill pilot holes for the mounting screws. Use the
enclosure mounting holes as a guide, or use the
dimensions listed in FIGURE 1 (above). A 1/2”NPT
tapping is located at the top of the enclosure.
Refer to the wiring instructions (p 2) to make
necessary connections. The housing is provided
with Green ground screw if the housing requires
an earth ground. After wiring, attach the cover to
the base.

Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 2
Version: 2.0
I0000816
WIRING INSTRUCTIONS
All thermistor type units are supplied with (2)
flying lead wires, and all RTD’s are supplied with
(2) or (3) flying lead wires – see FIGURE 3 and
4. The number of wires needed depends on the
application.
Connect thermistor/RTD wire leads to controller
analog input wires using wire nuts, terminal
blocks, crimp connectors, or soldering. If the
controller requires a (2) wire input for a RTD,
connect the (2) common wires (same color)
together. All wiring must comply with local
codes and National Electric Code.
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.

Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 3
Version: 2.0
I0000816
TROUBLESHOOTING
PROBLEM SOLUTION(S)
Sensor reading is incorrect
• 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 sensor wires, and take a resistance 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 reads innity/very high resistance • Sensor or wires are open
Sensor reads low resistance • Sensor or wires are shorted together
Erratic readings • Bad wire connections
PRODUCT SPECIFICATIONS
SENSOR NON-SPECIFIC
Number Sensing Points: One
Storage Temperature Range: -40 to 85 °C (-40 to 185 °F)
Operating Humidity Range: 10 to 95% RH, non-condensing
Enclosure Specications:
(Temperature, NEMA Ratings)
“-R” Enclosure: Copper-Free Aluminum, -50 to 60 °C (-58 to 140 °C), NEMA 3, 4, 7ABCD,
9EFG
Sensor Operating Temperature Range: Thermistor: -40 to 150ºC (-40 to 302ºF) | A/CP-HT and RTD: -40 to 200ºC (-40 to 392ºF)
Enclosure Explosion Proof Rating: CL. I, Div. 1 & 2, Groups A, B, C, D
Enclosure Dust-Ignition Proof Rating: CL. II, Div. 1, Groups E, F, G
Enclosure Raintight Rating: CL. II, Div. 2, Groups F, G
Enclosure Wet Locations Rating: CL. III
Enclosure UL Standards: UL 1203
Enclosure CSA Standards: C22.2 No. 30
Enclosure Hubs | Hub Size: Two | 1/2” NPT (National Pipe Tapered) Female Hubs
Probe Diameter | Sensor Threads: 0.250” (6.35mm) | ½” NPT Thread
Probe Material: 304 Stainless Steel
THERMISTOR
Sensor Output @ 25ºC (77ºF):
(Lead Wire Colors)
A/AN (Type III): 10 KΩ nominal (White/White)
A/CP (Type II): 10 KΩ nominal (White/Green)
A/CP-HT (Type II): 10 KΩ nominal (White/
Green)
A/10K-E1: 10 KΩ nominal (Orange/Gray)
A/1.8K: 1.8 KΩ nominal (Red/Yellow)
A/3K: 3 KΩ nominal (White/Brown)
A/20K: 20 KΩ nominal (Brown/Blue)
A/100KS: 100 KΩ nominal (Black/Yellow)
Accuracy 0-70ºC (32-158ºF): A/1.8K Series: +/- 0.5 °C @ 25 °C (77 °F)
and (+/-1.0 °C) (+/-1.8 °F)
A/10K-E1 Series: +/- 0.3 °C (+/- 0.54 °F)
All Else: +/- 0.2 °C (+/- 0.36 °F)
PLATINUM
Sensor Output @ 0°C (32°F): A/100: 100 Ω nominal A/1K: 1 KΩ nominal
Accuracy:
+/- 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): +/- 0.23°C (+/- 0.414 °F)
@ 0 °C (32 °F): +/- 0.15°C (+/- 0.27 °F) @ 200 °C 392 °F): +/- 0.55 °C (+/- 0.99 °F)

Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: [phone] | Website: workaci.com
Page 4
Version: 2.0
I0000816
WARRANTY
The ACI Hazardous Room Series temperature sensors is 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.