IdroCORE - Overview & Installation

| Overview

IdroNodeis the latest introduction within the 75F ecosystem. It is a terminal Fan Coil Unit (TFCU) controller. 

This TFCU Controller is designed to replace legacy systems with a modern, energy-efficient, and adaptable solution tailored for commercial buildings. It enhances HVAC performance through advanced connectivity (BACnet IP, BLE, BACnet), user-friendly interfaces, and robust configurations, addressing diverse operational needs. With a focus on sustainability, reliability, and seamless integration into smart building ecosystems, this controller ensures energy savings, improved user comfort, and compliance with global standards.

| Specifications

• 1 - Electric Heater: 250VAC, 10A relay with PWM control

• 3 - Relays rated for 250VAC, 3A

• 2 - 24VDC Outputs (300mA max)
• 4 - 0-10v DC output, 20mA (500 ohm) max drive for each output

• 2 - Ethernet ports supporting 10/100 Mbps, Failsafe for Auto bypass when powered OFF

• 1 - RS485 port for BACnet or Modbus communication. 

  • Supported BAUDS - 

    • BACNET: 9600, 19200, 38400, 76800 and 115200 baud rate

    • Modbus: 9600, 19200, 38400 and 115200 baud rate

• 1 - PoR for 2-wire communication with Sensors. 

• 6 - Universal Inputs for Sensor

  • Thermistors - 1K to 100K ohm
    • 1K-5K with 5% tolerance
    • 5K-75K with 2% tolerance
    • 75K-100K with 5% tolerance
  • Analog - 0 to 10V DC - impedance 10K ohm
• 4 navigation buttons
• 1.77" 240*128-pixel RGB TFT display
• 24V DC power outputs for powering sensors or actuators.
• RS485 port for BACnet/Modbus communication.
• Powers from a 240V AC supply.

| Precautions

• Install as per all state and local electrical codes.
• Do not mount the device in areas that expose the device to temperatures that could
  go beyond operating temperatures.
• Do not mount directly in sunlight or a heating source.

|Profiles Supported

• 2 - Pipe Terminal Fan Coil Unit
• 4 - Pipe Terminal Fan Coil Unit

| Mounting

• IdroNodeshould be installed on a DIN rail. To lock the DIN clip to IdroNode, use the screws provided to secure it to the back of the IdroNode. The DIN clip is spring-loaded and would snap on the DIN rail.

| Wiring

Wiring is based on the profile controlled; for more information, refer to the profile articles.

| Dis-Assembly

The following are the steps to be followed to disassemble the IdroNode device.

• Confirm the IdroNode is de-energised, and you have clear access to the unit.
• Locate the DIN-rail spring clip (usually on the top or bottom of the IdroNode).
• Press or lift the spring clip slightly (direction varies by model) to release the snap engagement. Use a small flat screwdriver to depress the clip if needed.
• While holding the clip open, slide the IdroNode vertically (upwards or downwards as
  required) to free the hooked edge from the rail.
• Tilt the unit away from the rail (pivot on the remaining edge) and lift it off the rail.
• Support the device with both hands as it clears the rail so the terminal wires don’t pull
  or kink.