Windhager Best Heating Technology Pellet Boiler
Monitors and controls Windhager pellet boiler heating systems via Modbus TCP.
This template connects Windhager BioWIN2 pellet boilers to ModbusCloud via Modbus TCP. It reads boiler temperatures, buffer tank levels, pellet consumption, and maintenance timers. It also allows control of heating circuits, hot water operation, and comfort settings.
- Protocol
- Modbus TCP
- Connection
- Ethernet, Modbus TCP
- Registers
- 40, read and write
- Brand
- Windhager
- Key readings
- Boiler temperature and power · Buffer tank temperatures (top, middle, bottom) · Heating circuit flow temperatures HK1/HK2 · Hot water temperature actual/setpoint · Pellet consumption and operating hours · Maintenance/cleaning remaining hours
- Available commands
- Operating mode HK1/HK2/hot water · Comfort (Behaglichkeit) HK1/HK2 · Party timer and Eco/Party setpoints HK1/HK2 · External heat request and buffer mode
- Compatible models
- BioWIN2 Deluxe · BioWIN2 Touch · BIOWIN2T
- Last updated
Registers (40)
38 read, 12 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Kesseltemperatur ist | °C | Read | |||
| Kesseltemperatur soll | °C | Read | |||
| Kesselleistung | % | Read | |||
| Restlaufzeit bis Reinigung | h | Read | |||
| Temperatur Puffer oben | °C | Read | |||
| Temperatur Puffer mitte | °C | Read | |||
| Temperatur Puffer unten | °C | Read | |||
| Restlaufzeit bis Hauptreinigung | h | Read | |||
| Restlaufzeit bis Wartung | h | Read | |||
| Lagerraum Befüllgrad | % | Read | |||
| AT | °C | Read | |||
| Vorlauftemperatur HK1 | °C | Read | |||
| Vorlauftemperatur HK1 soll | °C | Read | |||
| Betriebswahl HK1 | Read and write | ||||
| Behaglichkeit HK1 | K | Read and write | |||
| Warmwasser ist | °C | Read | |||
| Warmwasser soll | °C | Read | |||
| Vorlauftemperatur HK2 | °C | Read | |||
| Vorlauftemperatur HK2 soll | °C | Read | |||
| Raumtemperatur HK1 | °C | Read | |||
| Betriebswahl HK2 | Read and write | ||||
| Betriebswahl WW | Read and write | ||||
| WW Einmalladung ist | Read and write | ||||
| Behaglichkeit HK2 | K | Read and write | |||
| Restlaufzeit bis Ascheentleerung | h | Read | |||
| Betriebsstunden | h | Read | |||
| Pelletsverbrauch | t | Read | |||
| Alarmcode Wärmeerzeuger | Read | ||||
| Party Timer HK1 | min | Read and write | |||
| Sollwert Eco/Party HK1 | °C | Read and write | |||
| Sollwert Eco/Party HK2 | °C | Read and write | |||
| Party Timer HK2 | min | Read and write | |||
| Betriebsarten Kessel | Read | ||||
| Betriebsart HK1 | Read | ||||
| Betriebsart HK2 | Read | ||||
| Betriebsart WW | Read | ||||
| Betriebsphase Kessel | Read | ||||
| Betriebswahl Puffer | Read | ||||
| Wärmeanforderung extern | °C | Write | |||
| Betriebswahl Puffer | Write |
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Use cases
- Monitor boiler temperature, power output, and pellet consumption remotely on a live dashboard.
- Create alerts when buffer tank temperatures drop below a defined threshold for early fault detection.
- Track pellet consumption and operating hours over time to plan fuel deliveries and maintenance visits.
- Adjust heating circuit operating modes and comfort setpoints remotely without visiting the installation site.
- Activate party or eco timer modes for heating circuits HK1 and HK2 based on building occupancy schedules.
- Set up notifications when maintenance or cleaning remaining hours reach a critical level.
Installation
Connect the ModbusCloud Gateway to the same local network as the Windhager boiler with Infinity Plus LAN interface.
Ensure the InfoWIN Touch display is updated to Modbus TCP software version V3.1.0 or higher, and that the BioWIN2 firmware is V5.00 or higher.
Enable Modbus TCP on the Windhager boiler using the InfoWINtouch software and note the IP address assigned to the boiler.
Import the Windhager Pellet Boiler template from the ModbusCloud template library and assign it to the gateway.
Configure the IP address and Modbus TCP port in the ModbusCloud gateway settings to match the boiler network configuration.
Verify that all readings, such as boiler temperature and buffer tank levels, appear correctly on the ModbusCloud dashboard.
Things to watch for
Which Windhager models are compatible with this Modbus TCP template?
The template works with BioWIN2 Deluxe and BioWIN2 Touch models running firmware V5.00 or higher on the Infinity Plus platform. It is not compatible with MES+, MES Infinity, or Infinity-TA systems.
How do I enable Modbus TCP on my Windhager boiler?
All Windhager devices with Infinity Plus and LAN capability can be updated to Modbus TCP free of charge. BIOWIN2T units from August 2024 can self-update. Older units from April 2023 require Windhager customer service to perform the update.
What data types and scaling are used in the register map?
Register values use int16 and uint16 data types. Temperatures are expressed in degrees Celsius. Time values are expressed in hours or minutes.
The gateway connects but readings show zero or incorrect values. What should I check?
Confirm the InfoWIN Touch is running V3.1.0 or higher and the BioWIN2 firmware is V5.00 or higher. Also verify that the correct IP address and TCP port are configured in the ModbusCloud gateway settings.
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