Nordic Flexit

Use cases

• Monitor supply and extract air temperatures on a live dashboard to verify heat recovery performance.
• Create an alert when the alarm indication register signals a fault on the Nordic Flexit unit.
• Track filter operating hours remotely and notify the end user when a filter replacement is due.
• Adjust home and away temperature setpoints remotely without visiting the installation site.
• Trigger fireplace ventilation mode from the cloud when coordinating with a wood stove installation.
• Log outside air temperature alongside supply air temperature to evaluate heat recovery efficiency over time.

Installation

1. 1Connect the Modbus RTU wiring (A and B terminals) from the Nordic Flexit unit to the RS485 port on your ModbusCloud gateway (MCG or MLP series).
2. 2Verify that the Nordic Flexit is configured with slave address 1, baud rate 9600, 8 data bits, even parity, and 1 stop bit.
3. 3Match the same serial port settings (9600, 8E1) on the ModbusCloud gateway RS485 port configuration.
4. 4Import the Nordic Flexit template from the ModbusCloud template library and assign it to the correct gateway and port.
5. 5Set the Comfort Button register (address 2040) to 1 in the ModbusCloud interface to enable write access to all control registers.
6. 6Confirm live data is appearing on the dashboard by checking that temperature values and filter hours are reading correctly.

Things to watch for

Registers (13)

10 read / 6 write

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