STULZ Launches 4th Generation TelAir 4 and WallAir 4 Cooling Systems for Edge Computing and Critical Infrastructure

German precision air conditioning manufacturer STULZ has announced the fourth generation of its TelAir and WallAir precision cooling series. Designed to meet the evolving demands of edge computing, telecommunication shelters, 5G radio stations, and critical infrastructure, these new systems prioritize compliance with strict European regulations (F-Gas Regulation EU 2024/573), high energy efficiency, and operational reliability.

The TelAir 4 series is designed for indoor installation, whereas WallAir 4 is mounted externally on container walls as a space-saving monoblock solution. Both product lines are available in two standard enclosure sizes across four cooling capacity classes, ranging from 6 to 17 kW.

Key Advantages of the New STULZ Systems

By combining Free Cooling and mixed-mode operation, TelAir 4 and WallAir 4 units can reduce operating power costs by up to 80%. Integrated EC fans already comply with the upcoming ErP 2027 Ecodesign directive requirements.

• Eco-Friendly and Future-Proof: Utilizes R454C refrigerant with low Global Warming Potential (GWP) and zero ozone depletion potential.
• Wide Operating Temperature Range: Reliable performance in ambient temperatures from -20°C to +54°C, extending down to -40°C with an optional winter kit.
• Flexible Configuration Options: Choose between classic On/Off systems or units featuring continuously modulating EC inverter compressors.
• Multi-Stage Safety Architecture: Built to EN 378 standards for A2L class refrigerants, incorporating a two-stage leak detection sensor system and an IP54-rated enclosed control cabinet.
• Intelligent Monitoring: E² BASIC controller featuring Ethernet and Modbus connectivity for seamless integration into BMS and DCIM platforms.

Comparing Installation Concepts

Depending on facility architecture and space constraints, STULZ offers two structural concepts to ensure optimal airflow distribution and equipment protection.

TelAir 4 Indoor Units

• Mounting Concept: Installed inside the container or technical room.
• Airflow Distribution: Supports Downflow and Displacement airflow concepts with optional adjustable outlet grilles.
• Added Protection: Internal placement protects against severe weather and vandalism while lowering external noise emissions.

WallAir 4 Outdoor Units

• Mounting Concept: External wall-mounted monoblock installation.
• Airflow Distribution: Direct displacement cooling for immediate cold air stratification.
• Space Saving: Preserves 100% of the internal usable floor space within the shelter or container.

Why Choose STULZ Solutions from Softprom

As an official distributor of STULZ GmbH, Softprom provides comprehensive support for system integrators and enterprise clients. From sizing precision cooling solutions to assisting with deployment and long-term technical service, our team ensures your mission-critical infrastructure operates with peak efficiency and reliability.