For air cooled chiller, the heat generated and transferred by compressor can only be removed by ambient air, so the ventilation is very important. (See picture 1-1, regular installation condition).
Installation site should be drafty or equipped with air duct.
If the long duct influence the dissipation effect, a fan motor with same or bigger air volume should be mounted at the outlet of it. When install air duct, please make space for future maintenance.