Neptronic ARO24T Specification And Installation Instructions

Aro series universal room controller
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Models
Model #
Temp
ARO24T
ARO24TH
ARO24TGH
ARO24TGVH
AROB24T
AROB24TH
AROB24TGH
AROB24TGVH
* Networkable: BACnet MS/TP or Modbus (selectable using menu)
Description
IAQ and ECM fan control applications made easy! Introducing the
new ARO series universal room controller with onboard CO
VOC, temperature and humidity sensors, selectable application
control profiles, up to 4 simultaneous control loops, and seamless
control of a 0-10 Vdc ECM fan. All of this in one wall-mounted
room controller.
The AROB series networkable controller operates over an RS‐485
network using the BACnet MS/TP or Modbus protocol to
exchange information with a Building Management System.
Features
Onboard Sensors
Temperature sensor (°C/°F)
Humidity sensor (%RH), select models
VOC sensor (volatile organic compounds), select models
Carbon dioxide sensor (CO
Functions
Built-in application profiles to automatically configure the
controller for the selected application.
Up to 4 simultaneous control loops capable of controlling, in
real time:
Humidification and Dehumidification
o
Heating and Cooling
o
CO
levels
o
2
VOC levels
o
Integrated EC fan control mode
o
Display or hide all the required access for user interaction
Backlit LCD with simple icon and text-driven menus
Selectable Fahrenheit or Celsius scale
Precise temperature control with programmable PI function
Independent cool and heat setpoint for No Occupancy
ARO-IOM-171003
RH
CO2
VOC
Networkable*
), select models
2
ARO Series Universal Room Controller
,
2
Network Communication
(AROB series only)
BACnet
(selectable using menu)
Select MAC address using menu or network
Automatic baud rate detection
BACnet
MS/TP at 9600, 19200, 38400, 57600 or 76800 bps
Automatic device instance configuration
Copy and broadcast configuration to other controllers
Network service port through on-board mini USB connector
Modbus
Modbus at 9600, 19200, 38400 or 57600 bps
RTU Slave, 8 bits (configurable parity and stop bits)
Connects to any Modbus master
Specification and Installation Instructions
ARO Series
®
MS/TP or Modbus communication port
®
Page | 1

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Summary of Contents for Neptronic ARO24T

  • Page 1 ARO Series Universal Room Controller Specification and Installation Instructions Models Model # Temp Networkable* ARO24T ● ● ● ARO24TH ● ● ● ARO24TGH ● ● ● ARO24TGVH ● AROB24T ● ● ● ● AROB24TH ● ● ● ● AROB24TGH ●...
  • Page 2: Technical Specifications

    B = 4.85” | 123mm C = 1.00” | 24mm D = 2.36” | 60mm E = 3.27” | 83mm ºF / º C Certifications Conforms to UL STD 873 Certified to CSA STD C22.2 No. 24-93 www.neptronic.com Page | 2...
  • Page 3: Mounting Instructions

    C. Pull all wires through the holes in the base. D. Secure the base to the wall using wall anchors and screws (supplied). Make the appropriate connections. Mount the control module on the base and secure using the screw. www.neptronic.com Page | 3...
  • Page 4: Configuration Menu

    32ºF to 257ºF (see min and max value) 0.2ºF (22.0ºC) (0ºC to 125ºC) (0.1ºC) 6. Heat Setpnt Min The user cannot decrease the setpoint to 50ºF 32ºF to 257ºF 0.2ºF (10ºC) (0ºC to 125ºC) (0.1ºC) less than this value www.neptronic.com Page | 4...
  • Page 5 28. FAN ON SPEED PERCNT The minimum fan speed when the fan 0 to 100% system mode is ON. 29. FAN MODE Fan control mode you want to authorize to OFF, Auto (Automatic), ON the user in operation mode. www.neptronic.com Page | 5...
  • Page 6 3, 4 or 8 CPH (Cycles per hour) number of cycles per hour. 56. BO1 Anti Cycle Sec Select the delay before activating or re- 0 sec 0 to 300 sec 1 sec activating the contact. www.neptronic.com Page | 6...
  • Page 7 83. AO1 OAT Hi Temp AO1 no longer modulates and remains at 122ºF -40ºF to 257ºF 0.2ºF its minimum voltage if the OAT read at AI1 (50ºC) (-40ºC to 125ºC) (0.1ºC) is higher than this value. www.neptronic.com Page | 7...
  • Page 8 108. Humidity Deadband Humidity deadband value. The minimum 2 %RH 0% to 20% RH 0.1% RH range between the dehumidification and humidification setpoint within which the controller will not take action for the humidity reading. www.neptronic.com Page | 8...
  • Page 9 122. Show VOC Select No to hide VOC reading in No or Yes operation mode. 123. Auto Scroll In operation mode, the sensor values can ON or OFF scroll automatically (ON) or manually by pressing the enter key. www.neptronic.com Page | 9...
  • Page 10: Operation Menus

    Select the desired parity and number of NP2S NP2S (No parity, 2 Stop bits) stop bits for Modbus communication. EP1S (Even parity, 1 stop bit) OP1S (Odd parity, 1 stop bit) 14. Modbus Addrss Select the desired Modbus address. 1 to 246 www.neptronic.com Page | 10...
  • Page 11: Reset To Factory Default Settings

    Press to change Press to change Press to change Press to change Press to change Press to change temp mode: RH mode: CO2 mode: VOC mode: system mode: fan mode: Auto Auto Auto Heat Cool DEHUM www.neptronic.com Page | 11...
  • Page 12 "Occupied" operation. When the contact is not triggered, the controller enters into the Unoccupied mode (the symbol appears) and uses the unoccupied setpoints defined at Steps 93, "Unocc Cool Setpnt" and 96, “Unocc Heat Setpnt” respectively. www.neptronic.com Page | 12...
  • Page 13 When selecting the option "1" from the application profiles menu, the controller automatically configures the following options: System Modes Demand Source Demand Source Configuration Occupancy Main System Control Mode Highest Control Mode Highest Temperature Auto Direction Direct Direction Direct Humidity Min. Value TPM/Hysteresis Hysteresis Max. Value 100% Hysteresis Low Hysteresis High www.neptronic.com Page | 13...
  • Page 14 When selecting the option "2" from the application profiles menu, the controller automatically configures the following options: System Modes Demand Source Demand Source Configuration Occupancy Main System Control Mode Average Control Mode Average Temperature Auto Direction Direct Direction Direct Humidity Auto Min. Value TPM/Hysteresis Hysteresis Max. Value 100% Hysteresis Low Hysteresis High www.neptronic.com Page | 14...
  • Page 15 Notes...
  • Page 16 Recycling at end of life: please return this product to your Neptronic local distributor for recycling. If you need to find the nearest Neptronic authorized distributor, please consult www.neptronic.com. 400 Lebeau blvd, Montreal, Qc, H4N 1R6, Canada www.neptronic.com Toll free in North America: 1-800-361-2308 Tel.: (514) 333-1433...

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