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More info Previous versions of this document, as well as addenda, are available under the Product Family tab. ASHRAE Standard establishes safeguards for life, limb, health, and property and prescribes safety requirements. This standard is directed toward the safety of persons and property on or near the premises where refrigeration facilities are located. It includes specifications for fabrication of tight systems but does not address the effects of refrigerant emissions on the environment.
This standard applies to: a the design, construction, test, installation, operation, and inspection of mechanical and absorption refrigeration systems, including heat pump systems used in stationary applications; b modifications including replacement of parts or components if they are not identical in function and capacity; and c substitutions of refrigerant having a different designation. While the user of this document should be familiar with the entire standard, its organization into the following sections allows faster location of information.
ASHRAE Standard is intended to establish a simple means of referring to common refrigerants instead of using the chemical name, formula, or trade name.
It establishes a uniform system for assigning reference numbers, safety classifications, and refrigerant concentration limits to refrigerants. The standard also identifies requirements to apply for designations and safety classifications for refrigerants and to determine refrigerant concentration limits.
This standard provides an unambiguous system for numbering refrigerants and assigning composition-designating prefixes for refrigerants. Safety classifications based on toxicity and flammability data are included along with refrigerant concentration limits for the refrigerants. This standard does not imply endorsement or concurrence that individual refrigerant blends are suitable for any particular application.
The edition combines Standard and the 37 approved and published addenda to the edition. Among the key changes incorporated into the edition are the following:Added fourteen refrigerants to Table 2 and one to Table 1. Modified the method of calculating the heat of combustion to more closely represent what actually occurs and added an informative appendix with an example calculation. Revised the oxygen deprivation limit adjustment for altitude by an adding an intermediate adjustment at m ft.
Added occupational exposure limits for the refrigerants in Tables 1 and 2. Extended the rules for numbering refrigerants to include ethene-, butane-, butene-, and propene-based refrigerants. Changed the required testing temperature for flammability. All tests previously required at C F are replaced by testing at 60C F.
Standards 15 & 34
ANSI/ASHRAE 15-2010 (packaged w/ 34-2010)
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