This standard covers the types of liquid-chilling packages described in Section 4, “Liquid-Chilling Package Types. ” Types of compressors employed include reciprocating, centrifugal, scroll, and rotary (vane, helical, screw, etc.) compression equipment.

This standard does not include self-contained, mechanically refrigerated drinking-water coolers covered in ANSI/ASHRAE 18-1987 (RA 91) nor the bottled and canned beverage coolers covered in ANSI/ASHRAE 32-1986 (RA 90).

This standard does not include specification of the test rating conditions under which the package must operate. For information pertaining to published ratings and conditions, refer to ARI Standard 550-92, Centrifugal and Rotary Screw Water-Chilling Packages, and ARI Standard 590-92, Reciprocating Water-Chilling Packages.