STULZ WallAir 4
Space-saving, energy-efficient cooling for outdoor installation
The STULZ WallAir 4 is a compact, weatherproof precision air-conditioning unit designed for outdoor installation, leaving the entire interior of the container available for equipment and IT systems. By automatically utilizing free cooling, mixed-mode and compressor cooling modes, the system provides efficient and reliable cooling.
Key benefits
- Up to 84% energy cost savings thanks to free cooling and mixed-mode operation
- Compact outdoor design that frees up valuable space inside telecommunications containers
- Quick commissioning, with the system pre-charged and ready for connection
Key features
- Automatic free cooling, mixed-mode and compressor cooling operation
- Energy-efficient EC fans for efficient and quiet operation
- Remote monitoring and remote diagnostics, including temperature and airflow monitoring
- Hermetically sealed refrigeration circuit with a low refrigerant charge
- Optional backup operation with 48 V DC or 230 V AC power supply
The most important technical specifications
- Cooling capacity (kW): 6.6–16.9
- Outdoor air temperature range: -20 °C to +55 °C
- Cooling modes: free cooling, mixed-mode cooling, compressor cooling