1 Scope
This document specifies the performance testing, the standard conditions and the test
methods for determining the capacity and efficiency ratings of air-cooled air conditioners and air-to-air heat pumps.
This document is applicable to the following equipment:
This document is limited to:
-
― residential, commercial and industrial split-system air conditioners and heat pumps;
-
― factory-made, electrically driven and use mechanical compression;
-
― single- and multiple-circuit split-systems which utilize one or more compressors
with no more than two steps of control of the outdoor unit;
or
These split-systems are designed to operate with a combination of one or more outdoor
units and two or more indoor units designed for individual operation, and such modular
systems are capable of transferring recovered heat from one or more indoor units to
other units in the same system.
The requirements of testing and rating contained in this document are based on the
use of matched assemblies.
This document is not applicable to the rating and testing of the following:
-
a) water-cooled or water source equipment;
-
b) mobile (single-duct) units having a condenser exhaust duct;
-
c) individual assemblies not constituting a complete refrigeration system;
-
d) equipment using the absorption refrigeration cycle.
-
e) ducted air conditioners and/or ducted heat pumps, rated at less than 8 kW and intended to operate at external static pressures of
less than 25 Pa, controlled by a single thermostat/controller (refer to ISO 5151);
-
f) multiple split-system utilizing one or more refrigeration systems, one outdoor unit
and one or more indoor units, controlled by a single thermostat/controller (refer
to ISO 5151 or ISO 13253).
This document does not cover the determination of seasonal efficiencies or seasonal
part-load performances, which can be required in some countries because they provide
a better indication of efficiency under actual operating conditions.
NOTE Throughout this document, the terms “equipment” and “systems” mean “multi-split air conditioners” and/or “multi-split heat pumps”.