// CODE SNIPPET
1104.2.3.1 Closures
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Closures in the air distribution
system shall be considered. Where one or more
spaces of several arranged in parallel are capable of
being closed off from the source of the refrigerant
leak, their volume(s) shall not be used in the calculation.
Exceptions: The following closure devices shall not be considered:
Exceptions: The following closure devices shall not be considered:
- Smoke dampers, fire dampers, and combination smoke and fire dampers that close only in an emergency not associated with a refrigerant leak.
- Dampers, such as variable-air-volume (VAV) boxes, that provide limited closure where airflow is not reduced below 10 percent of its maximum with the fan running. [ASHRAE 15:7.3.2.1]
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