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Consulter notre FAQ

AirFlow CCT CW to DX Change Over

Issue:
AirFlow CCT CW to DX Change Over
 
Product line:
Airflow
 
Environment:
Data Center Cooling
 
Cause:
 
Resolution:
In the event there is a need to run a Legacy Airflow product (CCT, or TC) in direct expansion (DX) mode while shutting down or doing maintenance on the chilled water (CW) system, below is the proper way to do a CW temp switch over. 

Temp >> Down Arrow >> Down Arrow >> [You should see FreeCool: ECWS] >> Set the FreeCool OFF mode below the current water temp.  This will cause the compressor(s) to come on as long as there is a demand for cooling.

NOTE: Attached are documents regarding External Chilled Water Supply (ECWS) and its operation.
NOTE: These instructions are for a DG5.0 controller.

 

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