We are working on an 8-unit, 4-story apartment building in the City of Chicago. It's an NFPA 13R system, with two units on each floor level. The entire building (all floor levels combined) is about 14,000 sqft.
Are floor-level control valves required?
Under NFPA 13R there doesn't appear to be a requirement for floor-level control valves like there is in an NFPA 13 system (NFPA 13-2016 220.127.116.11). Even still, in NFPA 13 still allows a single control valve and flow switch when the entire building is less than the system limits of 8.2.1 (52,000 sqft for a Light Hazard system).
Chicago has a Chicago Fire Prevention Code that requires "each floor and level of a building" with a separate control valve (15-16-400), but this and several other sections within the Fire Prevention Code apply only to NFPA 13 systems, not 13R systems.
Might be a shot in the dark but was curious if anyone has ran into this before. Thanks in advance.
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