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Solution Components
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Solution Components

The OptiCool RPW-210 pump unit circulates R-134a refrigerant to the Active Heat Extractors (AHXs) located in the Cool Door System (CDS) installed in the rear of the cabinets. The pump also includes a chilled-water heat exchanger to remove the heat from the refrigerant.

In deployments where building chilled water is not available, a pump with an indoor chiller unit (RPC-210 with ICP-210) can be deployed. This is an indoor chiller unit that provides the same system functionality as the pump but contains a refrigerant (R-134a) to refrigerant (R407c) heat exchanger. Both the pump and pump/chiller units circulate virgin R-134a at low pressure (~55 psi; no compression and therefore no oils are used) in the primary cooling loop and prevent condensation by maintaining the refrigerant temperature above the dew point temperature. There are multiple pump and pump/chiller models available to support various power input arrangements and outdoor environmental conditions.

Low to High Density
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Low to High Density

As the heat density in data centers continues to grow there is demand for a solution capable of cooling the equipment. V-Blocks from Cisco and blade servers from IBM, Dell and many others are the reason why the industry and community is in need of a more efficient and cost effective cooling solution. OptiCool® is the perfect match for these applications as it was designed for high heat load racks. Being 95% more energy efficient than other solutions also helps with utility cost savings and provides a solid ROI.

Legrand OptiCool-Ready Racks
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Legrand OptiCool-Ready Racks

Legrand® and OptiCool Technologies® have joined forces to provide the most advanced close-coupled cooling solution on the market today, reducing in-room cooling energy up to 95%.

The OptiCool® data center cooling system provides close-coupled cooling at the heat source for low- to high-density cooling applications. OptiCool® is a low-pressure, refrigerant-based system which is adaptable to any computing equipment rack. The OptiCool® Cool Door® system attaches to the equipment rack and can support a variety of heat load and redundancy configurations while delivering unprecedented simplicity, performance and energy efficiency.

OptiCool® is vastly superior to conventional data center cooling, which includes computer room air conditioning, hybrid containment and in-row sytems. The OptiCool® data center cooling system provides exceptional energy efficiency (up to 95%) for a broad range of cooling applications from 2 to 30 kW per rack. Each OptiCool® refrigerant pump system delivers 210 kW of cooling capacity yet is only 40″ wide offering a dramatically reduced cooling footprint. In addition, each Cool Door® can be configured to support in-rack cooling redundancy at 20 kW per rack. OptiCool® can support both raised floor and non-raised floor environments.

Features and Benefits

OptiCool Technologies award-winning OptiCool® data center solution is the latest in technology innovations that maximize efficiencies in cooling, power utilization and space within the data center. This solution allows for adaptability to any rack or cabinet and is flexible and scalable enough to meet the needs of the data center today and in the future. Take a look at the features and benefits we offer and compare them to our competition. We believe you will see our differentiation is clear.

The Advantages of the OptiCool® Data Center Cooling Solution


Close-coupled, refrigerant-based cooling
Supports spectrum of low- to high-density applications
“Active” heat extraction supports up to 30 kW per rack
Adaptable to existing equipment racks
Modular design scalable to support heat load
Several design alternatives for redundancy
Continuous operation during installation
Easy access to equipment


Exceptional energy efficiency (up to 95%)
Reduced floor space dedicated to cooling (up to 90%)
Opportunity to increase rack density
Eliminates the need for a raised floor for cooling
Reduces ambient temperature and eliminates hot spots
Reduced maintenance costs
Reduced noise levels
Energy efficiency incentive funding available