ACI Room Series Thermistor Room with Setpoint Instruction Manual

ROOM SERIES
Installation & Operation Instructions
PCB: MULTI 4

Phone: 1-888-967-5224
Website: workaci.com

Room Series Thermistor Room with Setpoint

PRECAUTIONS

• DO NOT RUN THE WIRING IN ANY CONDUIT WITH LINE VOLTAGE (24/120/230 VAC).

MOUNTING INSTRUCTIONS

Separate the cover from the base. Attach the base directly to the wall or to a standard 2″ x 4″ junction box using the (2) #6-32 x 1″ screws provided.
Take care when mounting. Check local code for mounting height requirements. Typical mounting heights are 48-60″ (1.2-1.5 m) off the ground and at least 1.5′ (0.5 m) from the adjacent wall. The sensor should be mounted in an area where air circulation is well mixed and not blocked by obstructions. *Reference FIGURE 2 (next page)

For optimal temperature readings, follow these tips:

• Do not install on external walls.

• Avoid air registers, diffusers, vents, and windows.

• Avoid confined areas such as shelves, closed cabinets, closets, and behind curtains.

• Eliminate and seal all wall and conduit penetrations. Air migration from wall cavities may alter temperature readings.

• A thermally-insulated backing should be used when fitting to solid walls (concrete, steel, etc.). ACI part: A/ROOM-FOAM-PAD
  *Reference FIGURE 3 (next page)

• Do not install near heat sources, eg: lamps, radiators, direct sunlight, copiers, chimney walls, walls concealing hot-water pipes.

Refer to the wiring instructions (p. 2) to make necessary connections. After wiring, attach the cover to the base by snapping the top of the cover on first and then the bottom. Tighten the cover down, using the (2) 1/16″ Allen screws located in the bottom of the housing. A 1/16″ Hex driver is needed to secure the cover to the base.

FIGURE 1: ROOM DIMENSIONS
ROOM, VERSION 1
[R]

ROOM, VERSION 2
[R2]

WIRING INSTRUCTIONS

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 (24/120/230 VAC). The number of wires needed depends on the application. All wiring must comply with all local and National Electric Codes. After wiring, attach the cover to the base by snapping the top of the cover on first and then the bottom.

FIGURE 2: MOUNTING

Note: ACI’s stats are not two-way communicating. Communication jacks allow the user to query and modify operating parameters of the local room terminal unit from the portable operator’s terminal (laptop). This feature allows a technician to commission or service the controller via the sensor.

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.

FIGURE 3: LAYOUT

SETPOINT CONTROL

Adjust slider at bottom of housing for set point control. Slide to right to increase set point temperature. Slide to left to decrease temperature control. Units can be setup from factory for Direct Acting (resistance increases when adjusted to right), or Reverse Acting (resistance decreases when adjusted to right).

TABLE 1 : TERMINAL BLOCK CONNECTIONS

input
SET| Temperature set point signal to controller analog input
SET| Temperature set point signal common to controller analog input
0/R| Override signal to controller analog input
0/R| Override signal common to controller analog input

TABLE 2: COMMUNICATION JACK CONNECTIONS

OVERRRIDE OPTIONS

Override will be set to Override Short Sensor (default). Adjust J3 Jumpers to change.
*Reference FIGURE 4

Note: When wanting to use a Single Common for all (3) of the Outputs on a Separate Input Sensor, connect one wire in series with one of the Sensor, Setpoint, and Override Terminals. These three terminals may then be tied to the common of the controller with one wire, while the other three terminals would need to be connected to the proper Analog Inputs on your controller.

Note: (J2) is only used for Connection of the Membrane Switch (when equipped).

FIGURE 4: OVERRIDE OPTIONS JUMPER SETTINGS (J3)

FIGURE 5: COMMON OUTPUT TO CONTROLLER

TROUBLESHOOTING

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 confirm no external factors are affecting reading
Sensor Reads InfinityNery High Resistance:| • Sensor or wires are open
Sensor Reads Low Resistance:| • Sensor or wires are shorted together
Erratic Readings:| • Condensation on PCB board Bad wire connections

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.

PRODUCT SPECIFICATIONS

Driver
Override Option:| Short Thermistor (Default); Field (Jumper) Selectable “Dry Contact”Closure (Separate Input)
Operating I Storage Temperature Range:| 1.5 to 50 °C (35 to 122 °F) I -40 to 65 °C (-40 to 149 °F)
Operating Humidity Range:| 10 to 95% RH, non-condensing
Connections /Wire Size:| Screw Terminal Blocks (Non-Polarity Sensitive) 16 (1.31 mm2) to 26 AWG (0.129 mm2)
Terminal Block Torque Rating:| 0.5 Nm (Minimum); 0.6 Nm (Maximum)
Enclosure Material Color:| “-R2” Enclosure: ABS Plastic I White, UL94-HB
“R” Enclosure: ABS Plastic I Beige UL94-HB
THERMISTOR
Sensor Output @ 25`C (77°F):| A/1.8K: 1.8 KΩ nominal
A/3K: 3 KΩ nominal
A/AN (Type III): 10 KΩ nominal A/AN-BC: 5.238 KΩ nominal A/CP (Type II): 10 Kn nominal| A/CSI: 10 KΩ nominal
A/10KS: 10 KΩ nominal A/10K-E1: 10 KΩ nominal A/20K: 20 Ka nominal A/100KS: 100 KO nominal
Accuracy P. 0-70 C (32-158 F):| 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 * ItI)) where Itl is the absolute value of Tempe ature above or below 0 °C in °C)
@ 0 °C (32 °F): +/- 0.15 °C (+/- 0.27 °F)| @ SO °C (122 °F): +/- 0.25 °C (+/- 0.45 °F)
NALCO
Sensor Output @ 21.1°C (70°F):| 1 KΩ nominal
Accuracy:| @ 21.1 °C (70 °F): +/- 1%
NICKEL
Sensor Output @ 21.1°C (70°F):| 1 KO nominal
Accuracy:| @ 0 °C (32 °F): +/- 0.4 °C (+/- 0.72 °F) @ 54.4 °C (130 °F): +/- 0.56 °C (+/- 1.00°F)
@ 21.1 °C (70 °F): +/- 0.17 °C (+/- 0.34 °F)

WARRANTY

The ACI Room Series 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 web site: www.workaci.com.

Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: 1-888-967-5224 | Website: workaci.com

Version: 6.0
I0000120

References

• Building Automation Sensors | Automation Components, Inc.
• Building Automation Sensors | Automation Components, Inc.
• Thermistor Curves | Automation Components, Inc.

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