VK/DALAP 125 U Thermostat Duct Fan, 355m3/h

Advanced Climate Control for Small Growing Spaces

The VK 125 U thermostatic inline fan delivers 355m³/h of reliable ventilation power specifically designed for smaller non-residential growing spaces. This lightweight yet robust ABS plastic construction fan features integrated temperature control, making it the perfect solution for maintaining optimal climate conditions in grow rooms, workshops, garages, and commercial spaces where precise environmental control is essential.

Key Features and Performance Benefits

Engineered with the serious grower in mind, this thermostatic fan combines German engineering precision with practical functionality. The built-in thermostat eliminates guesswork and provides automated climate response, ensuring your growing environment remains stable even when you're away.

• Integrated thermostat with manual temperature setting directly on unit
• Automatic speed adjustment based on ambient temperature changes
• Maintenance-free ball bearing system for ultra-quiet operation
• Corrosion-resistant ABS plastic construction for high-humidity environments
• Universal mounting system for wall or ceiling installation at any angle
• Low-noise radial blade design minimizing operational sound
• Single-phase asynchronous AC motor with external rotor for reliability
• IP X4 protection rating suitable for moisture-rich environments

How the Thermostatic Control Works

The intelligent thermostat system monitors your space continuously and responds automatically to temperature fluctuations. Simply set your desired temperature manually on the unit itself - when ambient temperature rises 2°C above your setting, the motor automatically increases speed to provide enhanced airflow. As the space cools down, the fan returns to lower speed operation, maintaining consistent climate control while minimizing energy consumption.

This automated response system is particularly valuable for indoor growing applications where temperature stability directly impacts plant health and development. The fan's ability to modulate its output based on real-time conditions ensures optimal environmental control without constant manual adjustment.

Installation and Compatibility

Designed for seamless integration into 125mm ductwork systems, this fan connects easily to both flexible and rigid ducting. The universal mounting brackets allow installation on walls or ceilings at any angle, providing maximum flexibility for space-constrained growing environments. The radial design makes it ideal for applications with higher static pressure losses, such as longer duct runs or systems with multiple bends and connections.

For optimal performance, this unit works best with ductwork lengths up to 10 meters. The external motor housing design ensures heat dissipation away from the airstream, maintaining efficiency even during extended operation periods.

Technical Specifications

Professional Installation and Control Options

Each VK 125 U thermostatic fan includes all necessary mounting hardware for immediate installation. While the integrated thermostat provides automatic temperature control, fan speed can be further modulated using external controllers such as thyristor dimmers or autotransformers for even more precise environmental management.

Installation should always follow the included Czech manual and wiring diagrams. For safety and optimal performance, ensure all electrical connections are made according to local electrical codes and the manufacturer's specifications. The thermal protection system safeguards the motor against overheating, but proper installation and adequate ventilation around the unit ensure maximum lifespan and reliability.