Compact data center heat exchanger DCA

energy efficiency

Overview
The DCA fan wall is a modular, scalable cooling solution for enterprise, colocation and hyperscale data centres. Each module provides up to 500 kW cooling capacity and is designed for increasing rack densities. The compact units are installed outside the server room in the technical/service corridor and operate without raised-floor air distribution. Large-surface, high-efficiency heat exchangers enable energy- and space-efficient IT heat dissipation.

Performance and efficiency
Optimized component layout, low airflow resistance and intelligent sequencing control reduce energy consumption versus standard solutions. Large heat exchanger surfaces with optimized fin spacing and IE5-class EC motors with active PFC deliver high thermal performance with low electrical draw.

Key functional features

• Cooling capacity: up to 500 kW per unit
• Installed outside the server room in the technical corridor; no raised floor required
• Large-surface, high-efficiency heat exchangers for reliable heat dissipation
• Optimized airflow design to reduce pressure losses
• IE5-class EC motors with active PFC
• Pressure-independent 2-way control valve (PICV) for stable flow and heat transfer
• Optimized component layout and low airflow resistance

Installation, modularity and logistics
DCA modules can be installed side-by-side or stacked vertically to expand capacity and integrate redundancy. Unit width follows Euro pallet dimensions for dense transport loading. Factory preassembly reduces on-site installation time; forklift pockets support safe handling.

Operation and control

• Each unit includes an integrated control cabinet; external cabinet optional
• Fully integrated, wired control system, factory-tested and preconfigured
• Smart control options: constant pressure control (air side) based on ΔT-variable air speed or custom configuration
• Supports BACnet IP, BACnet MS/TP (via module), Modbus RTU/TCP/IP and RS interfaces
• Master/slave or teamwork operation modes; individual programming options

Maintainability and service
Full maintenance access is provided via the fan door from the technical corridor so all service tasks can be performed without entering the server room. Features include reinforced hinges, integrated safety shut-off and quick filter replacement via the fan door, designed for low life-cycle service effort.

Data centre compliance and reliability

• Structural integrity and quality tested to DIN EN 1886
• Compliant with EN 50600 / ISO/IEC 22237 / ASHRAE TC 9.9
• Specialized data centre fans with active PFC
• Fan performance certified to ISO 5801
• UPS backup for the control system
• Dual power supply (dual feed) for increased operational reliability
• Optional FAT (Factory Acceptance Test) including functional and BMS integration testing

Highlights / Product strengths

• Modular fan wall system for scalable data centre cooling
• Large exchanger areas for effective heat transfer
• Reduced installation time due to factory preassembly and plug-and-play readiness
• Side-by-side or vertical stacking for scalable capacity and redundancy
• 7" touchscreen display for local operation and monitoring

Illustrated operational benefits (callouts)

• No raised floor required — cooling without a raised floor
• Easy maintenance — service accessible from the technical corridor
• Optimized thermal management — supports hot-aisle containment and warm air recirculation
• Efficient cold air distribution — uniform delivery of cool air into the cold aisle via fan walls

Technical specifications

• Model name: DCA
• Cooling capacity: up to 500 kW per unit
• Motor technology: IE5-class EC motors with active PFC
• Control: Integrated factory-tested control cabinet; supports BACnet IP, BACnet MS/TP (via module), Modbus RTU/TCP/IP and RS interfaces
• Hydraulics: Pressure-independent 2-way control valve (PICV)
• Installation: Outside server room in technical corridor; side-by-side or vertically stacked; forklift pockets for transport
• Maintenance: Full access via fan door; reinforced hinges and integrated safety shut-off; quick filter replacement
• Standards & compliance: DIN EN 1886 tested; EN 50600 / ISO/IEC 22237 / ASHRAE TC 9.9 compliant; ISO 5801 fan performance certified
• Reliability: UPS backup for control system; dual power supply (dual feed)
• Factory options: Fully integrated wiring, preconfiguration, optional FAT (Factory Acceptance Test)