scope:

This Standard applies to factory-manufactured residential, commercial, and industrial packaged terminal air-conditioners and heat pumps asdefined in Clause 3.

This Standard applies to electrically operated vapour-compression refrigeration systems.

Packaged terminal air-conditioners and heat pumps are intended for unducted installation, but may be employed with ductwork having external static resistance up to 25 Pa (0.1 in H₂O).

This Standard does not apply to the following:

(a) heat-operated air-conditioning/heat pump equipment or room air-conditionerdheat pumps, as defined in CAN/CS4-C368.1;

(b) water-to-air and brine-to-air heat pumps, as defined in CAN/CS4-C13256-1 and IS0 13256-1 ;

(c) unitary air-conditioners and air-source unitary heat pumps, asdefined in CAN/CS4-C273.3 and AH 210/240, with capacitieslessthan 19 O00 W (65 O00 Btu/h);

(d) commercial and industrial unitary air-conditioners and heat pumps, asdefined in CAN/CS4-C746 and AH 340/360, with capacitiesof 19 O00 W (65 O00 Btu/h) or greater;

(e) commercial and industrial single package vertical air-conditioners and heat pumps, as defined in AH 390, with capacities of 39 300 W (1 34 O00 Btu/h) or less; and

(f) units with integral gasfired heating.