CAN/CSA-C656-M92 (R2003)

1.1 Applies to factory-made, air-source, air-sink, single package, unitary air-conditioners and heat pumps, matching assemblies of the type classified in Clause 1.4, intended for air-conditioning and space heating applications. 1.2 This Standard applies only to electrically driven, mechanical, vapour-compression-type systems charged with one of the refrigerants listed in Group 1 of CSA Standard B52, Mechanical Refrigeration Code. 1.3 This Standard applies to equipment rated below 19.0 kW (65,000 Btu/h) heating or cooling at standard rating conditions as listed in Clause 6.2. 1.4 Unitary equipment within the scope of this Standard is classified as follows: ----------------------------------------------------------------------------- Unitary air-conditioners Unitary heat pumps ----------------------------------------------------------------------------- ARI classification ----------------------------------------------------------------------------- Heating & Heating Designation ARI classification Designation cooling only ----------------------------------------------------------------------------- Single Single package SP-A package HSP-A HOSP-a ----------------------------------------------------------------------------- Year-round single package SP-y ----------------------------------------------------------------------------- 1.5 The values given in SI (metric) units are the standard. The values given in parentheses are for information only. Imperial units have been used in Clause 7 to ensure compatibility with the requirements developed by the United States Department of Energy and industry practice.