Performance standard for rating packaged water chillers

Scope

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

1.2 The compressor types covered under this Standard include (a) centrifugal; (b) screw; (c) scroll; (d) reciprocating; and (e) other types.

1.3 The condenser types covered under this Standard include (a) water-cooled; (b) air-cooled/evaporatively cooled; and (c) air- or water-cooled heat reclaim. Packages can also be supplied without a condenser.

1.4 This Standard applies to (a) factory-designed and prefabricated water-cooled absorption chiller/heater units; (b) units that are (i) single-effect indirect-fired by steam or hot water; and (ii) 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 (c) positive displacement chillers using fluids with secondary coolants (glycol or brine) for freeze protection and leaving brine temperatures greater than 0 °C (32°F).

1.5 This Standard does not apply to (a) absorption chiller/heater units with air-cooled condensers; or (b) applications employing heat pumping or exhaust gas firing.