Introduction

C H A P T E R 1

Introduction

The Sun Cooling Door 5600 is a 35kW cooling system for high-density heat loads that mounts on the rear of a Sun product and allows access to the back of the server rack or chassis.

Room air is drawn in through the front of the rack, picks up heat from the servers, transfers the heat to the Sun Cooling Door 5600’s coil and is expelled through the rear of the rack or chassis. When entering air temperature is 77˚F (25˚C) or fewer, the Sun Cooling Door 5600 removes up to 35kW of heat generated by the components without raising the temperature of the air leaving the rack or chassis.

The Sun Cooling Door 5600 is a passive system and requires no electricity. It relies on the server fans to move air across the micro-channel coil. Captured heat is carried away through Liebert XD pumped refrigerant technology.

Pumped R-134a refrigerant is supplied by either a Liebert XDP or Liebert XDC. Either Liebert unit will support up to four Sun Cooling Door 5600 units. Room cooling must be provided by a computer room air conditioner. For further information, refer to the Liebert XD System Design Manual, Liebert XDP User Manual or the Liebert XDC User Manual, available in the product pages at the Liebert web site:

http://www.liebert.com

1.1 Product / System Description

Each Sun Cooling Door 5600, when attached to a fully loaded Sun rack or chassis, has a nominal cooling capacity of 35kW (10 tons; 120,000 BTUh).

The complete system consists of Sun Cooling Door 5600 modules, piping, and a Liebert XDP or Liebert XDC.