CANNON WITHIN-ROW-COOLING (WIRC)

CANNON COOL: WITHIN ROW COOLING (WIRC) UNITS Cannon Water & DX Cooling solutions work on the air to water/DX Gas heat exchanger principle:

• Warm air from a cabinet, room or aisle is forced through a heat exchanger fan coil by high efficiency fans.
• The heat exchanger has circulating chilled water/DX Gas at between 7° and 20°C within it’s coil, the chilled water is supplied by an external water chiller(s) (supplied separately).
• The heat in the warm air will naturally dissipate into the fins of the WIRC coil as they are colder than the air, by this process the heat is "exchanged" with the cold water/DX Gas circulating within the coil.
• The resulting cold air is carried out of the coil and returned via forced air cooling fans into the cold aisle or cabinet.
• The water/DX Gas that has been warmed by the heat exchanger coil is returned to the main system chiller loop though a flow control valve (optional automatic).
• Performance of the system is dependant on many climatic and environmental conditions including:
• The Computer room being be sealed from outside heat sources and fresh air minimised within reason.
• Any open spaces to the sides of the 19-inch racks should be blanked and all wiring taken to the sides of equipment to keep the airways to and from the equipment fans open.
• The equipment within the the cabinet rack spaces should have it’s airflow maximised.
• All unused rack space should be blanked off.

Cannon computer rack cabinet/aisle water cooling systems are not traditional air conditioners and they do not regulate humidity. When the humidity level is high i.e. within humid atmospheres, the WIRC unit(s) will remove water vapour as condensate.  In this instance a condensate drain should be run to a normal gravity drain sump or an optional condensate pump may be fitted as required. In some situations the room humidity may be too low, and static electricity may cause a hazard to persons and equipment. The climate inside a data centre should meet the standards set by  ASHRAE. Cannon equipment is designed and built to comply with BS  EN60950 and the low voltage directive/SELV where appropriate. Any installations must meet local building and electrical supply  regulations where applicable.