Qe CRAC-CW
One of the traditional Qe Data Centre Cooling products, is the Qe CRAC-CW (Chilled Water) precision cooling unit. This energy efficient product offers close control cooling and the ability to facilitate an ultra-clean environment. It forms part of a larger chilled water cooling system where chillers and dry coolers provide the cooling capacity to the Qe CRAC-CW units.
High Energy Efficiency
- The EVO intelligent controller ensures optimum cooling efficiency and control. The large colour touch screen display with intuitive graphics provides intelligent control at the fingertip
- Efficient EC fan, providing optimum airflow adjustment, optional EC fan under floor design
High Adaptability
- Air discharge choices include down flow, up flow
- Customized design available
- Can work with other Qe CRAC unit types in Teamwork Control mode
- Intelligent precise control function for constant temperature and humidity
- Designed for the continuous 365 x 24 operation under full range of climate conditions
- Customized design available
- Long lifetime design with low operating and maintenance costs
- Large airflow supply with high SHR and low power consumption
- Ultra-wide input power adaptability, optional automatic re-start and delayed start up function
- Remote monitoring and control through dry contact or RS485 communication interface with open protocol
- Menu-based large LCD display with multi-level password protection function
- Standby (master/slave) mode and rotating duty mode available
- Self-diagnosis function, various system diagnosis, alarm, and protection functions
Options
- Transfer switch for Dual Power Input
- Wired temperature/humidity sensors realise the precise matching of cooling capacity and heat load
- Condensate water pump where gravity pipe runs to drains are not possible
Model Sizes (kW):
- 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200
Air Flow Orientations:
- Up Flow
- Down Flow
Air Flow Volume Range:
- 12,200 to 41,400 m3/h
Water Flow Rate:
- 7.2 to 36 m3/h
Dimensions:
- Height (mm) 1975 – 1975
- Width (mm) 850 – 2550
- Depth (mm) 1000 – 1000
- Weight (kg) 270 – 880
EVO intelligent controller
- 7-inch, 800×480 dot matrix true color touch screen
- Temperature and humidity curves
- Graphical display of device running status
- Multi-level password protection
- Able to connect multiple temperature & humidity sensors and detect the temperature & humidity of the inlet/outlet air of racks
- Control mode selected according to the rack cooling demand, precise air supply to realize energy saving
- RS485 interface as standard
- Optional SNMP and TCP/IP interface
- Multiple history alarms, expanded storage of history alarms is provided
- The running data stored every 60 seconds into a rolling log.
- The relevant data can be read directly via Building Management Systems
- Team Work Function to group multiple units easily
- Selective area temperature control
- Shared temperature and humidity setting
- Team work mode: demand management, trend management, rotation and standby (lead/lag), realising adaptive energy saving
EC fan
- Saving 20%~30% energy compared to traditional AC motor
- Soft-startup function, low startup current
- Adjust rotary speed automatically according to cooling requirements and airflow pressure, and provide airflow as required
- N+1 redundant configuration of fans, ensure the airflow in case of any fan fault
- Easy-maintenance design
Options
- Transfer switch for Dual Power Input
- Wired temperature/humidity sensors Realize the precise matching of cooling capacity and heat load
- Condensate water pump
