Catalogue

RLC-PRC042D-EN 13
Application Considerations
Cross winds, those perpendicular to the condenser, tend to aid efficient operation in warmer
ambient conditions. However, they tend to be detrimental to operation in lower ambients due to
the accompanying loss of adequate head pressure. Special consideration should be given to low
ambient units. As a result, it is advisable to protect air-cooled chillers from continuous direct winds
exceeding 10 mph (4.5 m/s) in low ambient conditions.
The recommended lateral clearances are depicted in the Close-Spacing and Restricted Airflow
Engineering Bulletin RLC-PRB037*-EN available on product portal pages or from your local office.
Provide Sufficient Unit-to-Unit Clearance
Units should be separated from each other by sufficient distance to prevent warm air recirculation
or coil starvation. Doubling the recommended single unit air-cooled chiller clearances will
generally prove to be adequate. See Close-Spacing and Restricted Airflow Engineering Bulletin
RLC-PRB037*-EN for more information.
Walled Enclosure Installations
When the unit is placed in an enclosure or small depression, the top of the surrounding walls
should be no higher than the top of the fans. The chiller should be completely open above the fan
deck. There should be no roof or structure covering the top of the chiller. Ducting individual fans
is not recommended. See Close-Spacing and Restricted Airflow Engineering Bulletin RLC-
PRB037*-EN for more information.