www.motivaircorp.com

The CDU creates a secondary isolated water loop and pumps this through the Chilled Doors® to operate at maximum efficiency without any possibility of condensation in the data center. This is achieved by the use of a copper brazed stainless steel plate heat exchanger, which transfers the heat removed from the servers in the secondary loop to the primary building chilled water supply.

The CDU automatically adjusts the coolant flow and temperature to provide 100% sensible cooling by maintaining the secondary loop temperature above the dew point of the data center. The redundant, dual pumps deliver a secondary loop flow with up to 65°F, which removes 270 kW of server heat in the Chilled Doors®, while maintaining a data center space temperature of 75°F. Each pump is fitted with its own VFD to pro-vide the precise coolant flow required at any load.

A motorized 3-way diverting valve instantly adjusts the heat exchanger cooling capacity based on cooling demand. Operation is completely automatic and the CDU requires no routine maintenance. Adjustable water temperature set point and alarm points are easily accessed via a secure 3-level HMI screen in the front face of the CDU. The Motivair ® PLC controls the entire CDU operation and provides remote control and communication via LON, BACnet or Modbus.

The Motivair® CDU is completely packaged in a high quality, powder coated, rack-type enclosure with casters and leveling feet. Motivair® offers a 6-door and a 12-door underfloor header assembly for flex hose connections between the CDU and Chilled Doors®. Various length quick- connect hydraulic hoses are available to suit any customer installation.

HIGH CAPACITY Coolant Distribution UnitFor Chilled Door® Data Center Rack Coolers

The Motivair® CDU is designed to

provide the optimum chilled water

temperature to Motivair® Chilled

Doors® when they are connected

to a building chilled water supply.

*CDU is shown with access doors removed.

Key Reasons to Use a Motivair® CDU:

• Isolates a clean water supply for Chilled Door® server rack cooling

• Always maintains water temperature above data center dew point

• Ensures 100% sensible cooling in Chilled Doors®

• No condensate pumps or piping needed

• Automatically adjusts water flow and temperature to required values

• Allows quick hose connections and easy scalability

• Communicates via BACnet, LON or Modbus

• Dual pumps, VFD’s and power supplies for maximum redundancy

CDU

85 Woodridge Drive, Amherst, NY 14228Tel: 716-691-9222 Fax: 716-691-9229

www.motivaircorp.com 4/2014

MOTIVAIR® Coolant Distribution UnitTechnical Specifications:

Function: Water to Water Cooling Unit

Cooling Capacity: 270 kW

Coolant Fluid: Chilled Water

Maximum Primary (Building) Water Flow: 185 gpm

Entering Primary Water Temperature: 45°F

Leaving Primary Water Temperature: 55°F

Maximum Primary Loop Pressure Loss: 15.4 psi

Primary Water Connection Size: 2.5” NPT

Primary Connection Location: Bottom or Top

Maximum Secondary Loop Flow: 120 gpm

Entering Secondary Water Temperature (from Chilled Doors®): 80°F

Leaving Secondary Water Temperature (to Chilled Doors®): 65°F

Secondary Water Connection Size (to/from Underfloor Header): 2.5” NPT

Secondary Connection Location: Bottom or Top

Maximum Secondary Loop Pressure Loss in CDU: 14.4 psi

Available Pump Head Pressure for Chilled Doors®, Header & Hoses: 27.3 psi

Pump Motor Power: 5.0 HP (3.7kW)

Pump Quantity: 2

VFD Quantity: 2

Power Feeds: 1 (2 Optional)

Number of Chilled Doors® Supported at 45 kW each: 6

Number of Chilled Doors® Supported at 22.5 kW each: 12

CDU Dimensions: 31-1/2”W x 42-1/2”D x 72”H

CDU Weight: 850 lbs

Power Supply: 460/3/60 or 400/3/50

Max Current: 7.6 FLA or 8.75 FLA

Communication: BACnet, LON, Modbus

Sound Data at 10ft (3m): <55 dBA

Safety Approvals: ETL per UL & CSA

Dual Pumps PLC HMI Screen Underfloor Header Chilled Door®

Note: Performance is dependent on a number of variables specific to its application.