Standard product definitions
CL20 C2 rear cooler
C2 coolers are capable of up to 6kW maximum cooling and include as standard three EC fans. Two additional fans can be fitted to provide N+N. All fans have fixed or thermistor speed control. The cooler is not fitted with a CMS (see below) but does include LED power indication.
CL20 C3 rear cooler
C3 coolers are capable of up to 8kW maximum cooling and include as standard three EC fans. Two additional fans can be fitted with speed control to provide N+N. C3 coolers include CMS (see below) to control two rear coolers. is not fitted with a CMS but does include LED power indication.
The C3 cooler is designed to work as a low duty or co-locate system. The set point adjustment is controlled via a commissioning tool, alarm output and BMS signalling via Modbus/CAREL/BACnet RS485 connection option.
The ColdLogik Management System ‘CMS’ is designed to run at optimum performance at all times, ensuring maximum energy savings from data centre cooling solutions. It tracks the air off the cooler into the room and water temperatures back to the cooling medium—by so doing it is able to make minor adjustments ensuring the room ambient temperature is maintained at all times.
0.5kW - 85kW cooling per door
CL20 C4 rear cooler
C4 are available in two variants passive or active. Each is capable of up to 20kW maximum ‘sensible cooling’. The ‘Passive’ C4 is the entry level version of the rear cooler and being passive has no fan management system, coolant control or communication protocol—the retrofitting of thermostatically controlled EC fans does offer a degree of control. The ‘Active’ C4 version comes with the full CMS (see above) control and EC fans can be factory or retrofitted.
CL20 C8 rear cooler
C8 is capable of a maximum 35kW of ‘sensible’ cooling and is complete with the CMS (as above) and five EC fans.
CL20 C12 rear cooler
C12 is capable of a maximum 45kW of ‘sensible’ cooling and is complete with the CMS (as above) and five EC fans.
CL20 C14 rear cooler
C14 is capable of a maximum 58kW of ‘sensible’ cooling and is complete with the CMS (as above) and five EC fans.
Non-standard product example
CL20 C14 PLUS rear cooler
C14 PLUS is an example of a non-standard rear cooler, which due to the larger coil and overall design is capable of a maximum 85kW of ‘sensible’ cooling and is also complete with the CMS and five EC fans.