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FLEXIBLE AVERAGING
TEMPERATURE SERIES
Installation & Operation Instructions
DT2650
GENERAL INFORMATION
The DT2650 is a battery operated wireless
exible averaging temperature sensor using
900 MHz spread spectrum technology to
monitor averaged temperature in ducts. The
exible cable is 24' long and has nine (9)
sensing points evenly spaced throughout
the length of the cable for maximum
coverage. The DT2650 is easy to install with
no wire runs or conduit needed. The DT2650
will send the temperature wirelessly to the
RM2432D receiver that converts the wireless
signal to voltage input for use with a DDC
controller, or to a transceiver which will send
the data to a BAS using BACnet™, Modbus, or
Lonworks® protocol. Transmission distance
in a typical building is 200-300 feet
horizontal depending on the layout and
construction of the building, and one oor
above and one oor below the transceiver.
Sensor distance and reliability can be
increased with the addition of a RR2552B(s)
repeater.
Wireless sensors should be installed within
200 to 300 feet of the receiver. RR2552
signal repeaters can be installed as to
increase transmission distance between
sensors and receivers.
MOUNTING INSTRUCTIONS
To select the proper sensor location, rst install and power the receiver. To activate the sensor insert the
battery observing the polarity. ACI's Wireless system does not require any additional wireless equipment to
determine the proper location of the sensors.
While the sensor is attempting to connect to the receiver the Data-Link LED will blink rapidly 8–10 times
every 10 seconds. Once a connection has been established, the Data-Link LED will blink once to indicate
the data transmission has been received successfully. The Data-Link LED will continue to blink once for
every data transmission. The data transmission rate is programmed into the sensor (normally 1 minute
intervals). To manually initiate a data transmission press the push button switch located by the negative
terminal of the battery.
Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: 1-888-967-5224 | Website: workaci.com
FIGURE 1: DIMENSIONS
STANDARD
2.25"
3.20"
(57.15 mm)
(81.28 mm)
Internal Link Button
1.88"
(47.752 mm)
NEMA 4X
Battery Positive Terminal
SST2630AE
Altech Water
Tight Fitting
Internal Link Button
NEMA 4X Enclosure
Page 1
Phone: 1-888-967-5224
Website: workaci.com
5.78" (146.812 mm)
5.25" (133.35 mm)
DT2650A
Battery Positive Terminal
Standard Enclosure
4.53" (115.062 mm)
Version: 7.0
I0000681
Heyco Water
Tight Fitting
Ø 0.19" (4X)
(4.826 mm)
2.56"
(65.024 mm)
2.23"
(56.642 mm)
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Summary of Contents for aci DT2650
- Page 1 To select the proper sensor location, rst install and power the receiver. To activate the sensor insert the battery observing the polarity. ACI’s Wireless system does not require any additional wireless equipment to determine the proper location of the sensors.
- Page 2 Optional copper capillary (ACI Item #130525) or universal plastic mounting clips (ACI Item #128248) can be ordered. Plastic mounting clips will help insulate the copper sensing element from the metal duct. The capillary clips help avoid kinks when bending. When using Flexible averaging, do not cover the heatshrink that is located throughout the sensor (sensing points).
- Page 3 Battery and Data-Link LEDs will not blink. Replace the battery and the Data-Link LED will start blinking while the sensor is re-establishing communications with the receiver. Then attach the cover of the sensor by installing the four screws. PRECAUTIONS SENSORS, REPEATERS AND RECEIVERS SHOULD NOT BE INSTALLED IN THE FOLLOWING AREAS: •...
- Page 4 WARRANTY The Wireless Duct Sensor Series 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.