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Noncomformity between NFPA and Sprinkler Catalogue

Noncomformity between NFPA and Sprinkler Catalogue

Noncomformity between NFPA and Sprinkler Catalogue

(OP)
Dear Experts,
I am confused about maximum coverage distance of sidewall sprinkler when we put two sidewall sprinkler at the opposite walls(throw):
- As per NFPA section 8.9 and 8.7 maximum throw distance of single extended coverage sidewall sprinkler is 4.3 m (see photo below)
- at the technical catalogue it is stated that same sprinkler can throw upto 6.1 m. (see photo below)

I am little bit confused. Which information should i follow in the FF design. Any recommendation?



RE: Noncomformity between NFPA and Sprinkler Catalogue

If it is listed which I am assuming, you follow the data sheet. You may refer to 1.5, 1.5.1, 1.5.2 for that. But make sure these sprinklers will be installed and not something else.

RE: Noncomformity between NFPA and Sprinkler Catalogue

UFT12 gave the correct answer.

These sprinklers are UL listed for light hazard only.

RE: Noncomformity between NFPA and Sprinkler Catalogue

(OP)
Thanks for feedback. But still there are big difference between Catalogue (6.1 m) and NFPA 13 (4.3 m) standard. :(

RE: Noncomformity between NFPA and Sprinkler Catalogue

There's no discrepancy. Your first chart is for standard spray HSW sprinklers. You're using extended coverage sprinklers so you're in the wrong section.
Manufacturer's are not going to violate what NFPA 13 states (they're required to abide by it) but their listing do, in a sense, trump '13.


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