CAN/CSA-C746-98 (R2004)

1. Scope 1.1 This Standard provides methods for rating factory-made commercial and industrial unitary air conditioners, heat pumps, and condensing units of the types classified in Tables 1, 2, and 3 and 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. 1.3 This Standard applies to equipment rated greater than 19 kW (65 000 Btu/h) and less than 73 kW (250 000 Btu/h) cooling or heating capacity at standard rating conditions. 1.4 This Standard is written in SI (metric) units. The values given in parentheses are for information only.