ModulAir Dual Circuit DX

Compact and modular precision cooling for mission critical applications

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A High Capacity System in a Compact Footprint for Difficult Rigging Applications

ModulAir computer room air conditioners are created by combining two CyberOne single compressor systems to create a dual compressor 26 - 76 kW system. 

Data Center
Data Center
Our units are designed for highest requirements and maximum reliability
Small, medium & large rooms
Small, medium & large rooms
Precision air conditioning units for low to high heat loads
Customizable down to the last detail
Standardized unit
Standardized unit
Standardized design for short delivery times

Product Overview

At a glance


  • Data Centers


  • High efficiency scroll compressor
  • R407c
  • DX-Air, Water, Glycol-Cooled
  • Modular design:
    • Permits ease of installation & rigging
    • Redundancy 
  • Quick installation
  • DX-Air, Water, Glycol-Cooled
  • Upflow and Downflow systems
  • Microprocessor Control
  • 100% front service access
  • High efficiency scroll compressor
  • R407c
  • Made in the USA
Technical Data
  • 26 - 76 kW system

STULZ E² Microprocessor Controller

STULZ E² Control and Monitoring

STULZ E² Controller ties everything together

  • Designed specifically for precision control of mission critical environments
  • Multiple I/O capabilities for all major components to optimize control for energy savings
  • Supports universal BMS interface for remote monitoring (address readable) and remote control (address writable)
  • Capable of network controllers in a workgroup (pLAN) to work as one (no BMS required)
  • Pre-engineered controls for economizers and adiabatic cooling
STULZ E² Benefits

STULZ E² Benefits

  • Backlit LCD alphanumeric display for visual indication
  • Operated via 6-key menus, in five different modes
  • Unit functions for cooling, heating, humidifying and dehumidifying
  • Three levels of restricted entry into the configuration
  • Sensor inputs control inputs/outputs
  • Additional I/O sensors and alarms
  • Optionals UPS backup module 
  • Independent EC Fan and cooling control (CW valve or DX)
  • Cooling control sequence: return air temperature, humidity, supply air temperature, dew point
  • Fan control sequence: BMS, local/static pressure, and temperature based (supply or return air)
  • Capable of networking up to eight EControllers with an independent LAN
  • Psychrometric control provided as a user configurable temperature and humidity (relative humidity) or dew point control
STULZ E² Controller Communicates with BMS/BAS systems via the following protocols:

STULZ E² Controller Communicates with BMS/BAS systems via the following protocols:

  • BACnet IP
  • BACnet over Ethernet
  • BACnet MS/TP
  • HTTP
  • SNMP V1, V2c
  • Modbus IP
  • Modbus RTU


Find your individual STULZ contact

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Related Products


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CyberAir CW and DX

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Compact CWE

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Do you have any questions? We will be happy to help! Please call us or follow our contact form.

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Contact us

Holsteiner Chaussee 283
22457 Hamburg 

Central Office: +49 40-5585-0
Fax: +49 40-5585-352

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