Interpretation #8402

Published May 04, 2020

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Original Request

Code Version
2017
Code
MECHANIC
Code Description
Chapter
Chapter 6 Duct Systems
Section
606.2.2
Topic
Common Supply Systems/Duct Detectors

Question

In Section 606.2.2 of the FBC-M, Where multiple air-handling systems sharing a common supply with a combined design capacity greater than 2,000 CFM. Is the intent of Section 606.2.2 that the multiple systems need to be ducted together or just have to share a supply in the same conditioned space?

Answer Published 05/04/2020 at 3:20 PM

No, FMC 606.2.2 does not require that the systems are bundled to a main trunk. FMC 606.2.2 indicates that when systems are joined to a main supply trunk and the total cfm exceeds 2,000, then smoke detection is required.

Commentary

None.