Computer Room Air Conditioner CRAC
Computer Room Air Conditioner CRAC Precision climate control units for data centres The CRAC CW and CRAC DX air conditioning units from Rittal ensure optimum climatic conditions in data centres that are exposed to high thermal loads. By precisely regulating the temperature and humidity, these climate control units guarantee optimum ambient conditions for your valuable IT equipment. Waste heat is dissipated according to requirements. Optimised arrangement of the principal components in the climate control units ensures a high cooling output, even in confined spaces. CRAC DX Precision climate control unit for direct evaporation with external air-cooled condenser unit. CRAC CW Precision climate control unit for cold water operation.
CRAC DX Model No.
CRAC CW
3300.394
3300.395
3300.396
3300.397
3300.398
3300.384
3300.385
3300.386
3300.387
Useful cooling output kW1)
9.54
18.2
28.3
41.0
51.7
26.4
48.4
72.8
97.6
3300.388 125.0
Operating voltage V, Hz, ~
400, 50, 3
400, 50, 3
400, 50, 3
400, 50, 3
400, 50, 3
400, 50, 3
400, 50, 3
400, 50, 3
400, 50, 3
400, 50, 3
Width mm
650
1085
1320
2155
2155
1085
1305
1875
2499
2499
Height mm
1925
1925
1980
1980
1980
1925
1980
1980
1980
2580 930
Depth mm Cooling medium
650
750
860
860
860
775
930
930
930
R410a
R410a
R410a
R410a
R410a
–
–
–
–
–
–
–
–
–
–
◾
◾
◾
◾
◾
2653
5460
7440
11310
14500
6600
12200
18000
24200
30950
3300.414
3300.415
3300.416
3300.417
3300.418
–
–
–
–
–
Refrigerant Water
Volumetric airflow m³/h at an external pressure loss of 20 Pa Also required Condenser unit 1)
Functional principle: The precision climate control unit draws warm waste air from the top of the data centre, cools it using either water or refrigerant in a closed heat exchanger, and blows the cooled air into the raised floor of the data centre with overpressure.
Principal components of the CRAC DX ◾ Enclosure made from stove-enamelled aluminium profile frame ◾ Base frame and panels of hot-galvanised sheet steel and plastic coating ◾ Built-in fans ◾ Scroll compressor ◾ Cooling circuit ◾ Master switch ◾ MP.COM microprocessor control
RITTAL GmbH & Co. KG Postfach 1662 · D-35726 Herborn Phone +49(0)2772 505-0 · Fax +49(0)2772 505-2319 E-mail: info@rittal.de · www.rittal.com
Principal components of the CRAC CW ◾ Enclosure made from stove-enamelled aluminium profile frame ◾ Base frame and panels of hot-galvanised sheet steel and plastic coating ◾ EC fans ◾ Proportional 3-way valve for cooling water with manual switch for emergency operation ◾ Switch panel in a separate compartment ◾ Master switch ◾ MP.COM microprocessor control
Principal accessories (optional) ◾ Vapour humidifier ◾ Reheater ◾ Additional cooling circuit ◾ Fine filter F5/F6/F7/F9 ◾ Serial interface BACnet, Ethernet, SNMP, TCP/IP ◾ EC fans (for 3300.386, 3300.387, 3300.388); with all other units, the EC fans are included as standard
08.2014
Output figures less heat from the fans. CW: 26°C/45% air inlet and 10°C/15°C water temperatures DX: 24°C/50% air inlet Other options available on request. We reserve the right to make technical modifications