7.4 Chilled Water Distribution System Chilled water - Campus Maps
HIGH CAPACITY Coolant Distribution Unit - chilleddoor.com · The Motivair® CDU is designed to...
Transcript of HIGH CAPACITY Coolant Distribution Unit - chilleddoor.com · The Motivair® CDU is designed to...
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.