BM 21903-08 Alpha Direct Balance Switch Modbus 230V Station - 8 zones

Type: Möhlenhoff BM 21903-08 Alpha Direct Balance Switch Modbus 230V Station - 8 zones - 138220

The station can be easily connected to the building management system via Modbus-RTU interface. This ensures continuous communication with the higher-level control system, which can read and change all necessary data in real time. In addition, it can also map cooling by inverting input signals from heating controllers.
Standard heating controllers can be connected. This means that no special heating/cooling controllers are required. Standard thermal actuators in NC version are used as valve actuators.

- Modbus-RTU interface
- In accordance with GEG §71a
- Possibility to set cooling blocking for each valve output/actuator
- Special functions (factory reset, manual opening, first opening)
- App function (NFC)
- Integrated automatic hydraulic balancing with TÜV certification
- Automatic detection of connected controllers
- Simple, intuitive installation and operation without supply and return sensors
- Status indication using LEDs
- Connection of up to 12 valve actuators
- Suitable for NC drives
- Configurable pump and boiler control
- Connection for dew point sensor and temperature drop input
- Proven cable routing and strain relief
- Screwless plug-in/clamp connection technology
- Clearly arranged connection terminals
- High functional reliability
- No initialization or calibration required
- Maintenance-free

Technical data
Operating voltage: 230 V / ±10% / 50 Hz
Max. power consumption: 50 VA
Protection type/protection class: IP 20 / II
Heating zones: 8
Max. Connectable valve actuators: 12
Case material: ABS
Case/cover color: light gray/transparent
Dimensions W x H x D: 326.5 x 90 x 52 mm

Link to manufacturer information