STULZ TelAir 4
Energy-efficient, space-saving cooling for telecommunications and server rooms
The STULZ TelAir 4 is a precision air-conditioning unit designed for indoor installation, developed primarily for telecommunications containers, equipment rooms and server rooms. Indoor installation protects the equipment from external environmental influences while free cooling and mixed-mode operation significantly reduce energy consumption.
Key benefits
- Up to 83% energy cost savings thanks to free cooling and mixed-mode operation
- Indoor installation protects the equipment from weather-related influences and vandalism
- Low-noise design developed for continuous 24/7 operation
- Quick commissioning, with the system factory-tested and pre-charged with refrigerant
Key features
- Automatically controlled free cooling, mixed-mode and compressor cooling operation
- Multiple airflow configurations, allowing the cooled air to be adapted to the characteristics of the room and the arrangement of the equipment
- Remote monitoring and remote diagnostics via a web interface, including data logging, remote configuration and alarm management
- Optional backup operation with 48 V DC or 230 V AC power supply
- Energy-efficient, speed-controlled EC fans and optional EC compressor
The most important technical specifications
- Cooling capacity (kW): 6.2–16.9
- Outdoor air temperature range: -20 °C to +54 °C
- Airflow direction: bottom discharge or low-velocity, floor-level air supply