(P4842)
English
ASHRAE refrigerant number
identifier of a refrigerant assigned in ANSI/ASHRAE standard 34
Data type
External identifier
Statements
[a-zA-Z]?\d{2,4}([a-zA-Z][\da-z])?(\([a-zA-Z]\))?
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Constraints
[a-zA-Z]?\d{2,4}[a-zA-Z]?[\da-z]?(\([a-zA-Z]\))?
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