CAN/CSA-C743-09 (R2019) Performance Standard for Rating Packaged Water Chillers

This Standard applies to factory-designed and prefabricated vapour-compression chillers that include one or more hermetic or external drive compressors.

The compressor types covered under this Standard include centrifugal, screw, scroll, reciprocating, and other types. The condenser types covered under this Standard include water-cooled, air-cooled/evaporatively cooled; and air- or water-cooled heat reclaim. Packages can also be supplied without a condenser.

This Standard applies to:

• Factory-designed and prefabricated water-cooled absorption chiller/heater units;
• Units that are
  • Single-effect indirect-fired by steam or hot water; and
  • Double-effect, both indirect-fired by steam or hot water and direct-fired by oil, natural gas, or liquefied petroleum (LP) gas (water is the refrigerant and lithium bromide is the absorbent); and
• positive displacement chillers using fluids with secondary coolants (glycol or brine) for freeze protection and leaving brine temperatures greater than 0 °C (32°F).