Performance standard for rating packaged water chillers

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