Protection for Kitchen Exhaust Filtration Unit?

2/24/2020

Have a kitchen exhaust "ecological unit" which filters oil, grease, dust particles, and smoke odor from a kitchen hood exhaust system.

Are there requirements for how to be protect the unit?

I'm not sure whether sprinklers would be required within the unit as I'm unfamiliar with these. Any guidance or tips from those who've worked with these before would be appreciated.

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5 Comments

MICHAEL GLASS

2/24/2020 11:26:32 am

My past company had installed some kitchen ventilation systems. We spec'd a system that used an integrated fire protection system for the hood. Not sure what type of system you have. Here is a link:

https://www.accurex.com/products/fire-suppression-systems

Michael Major

2/24/2020 12:22:56 pm

Hello,

NFPA 96: Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, 2017 Edition, discusses this in Chapter 9.3

9.3.1 - Fume incinerators, thermal recovery units, air pollution control devices, or other devices shall be permitted to be installed in ducts or hoods or to be located in the path of travel of exhaust products where specifically listed for such use.

9.3.3 - Any equipment installed in the path of exhaust products that provides secondary filtration or air pollution control shall be provided with an approved automatic fire-extinguishing system, installed in accordance with the fire-extinguishing system manufacturer’s instructions.

9.3.3.1 - The fire-extinguishing system required by 9.3.3 shall provide protection for the component sections of the equipment, and ductwork downstream of the equipment.

I hope this was helpful.

Mike

Jessica Lutz

2/24/2020 01:25:28 pm

Pollution control units, or PCU's, are still quite new.
You'll need to do some investigative work to cover your bases.

Look thru the PCU contract\shop drawings.
Consult with the manufacturer. They usually have a pressure and flow requirement at their prv station or manifold and panel that could require either an engineer or designer to prove on their submittal plans. Usually all that's required is a pipe connection for them.
*caution*
I have seen a project where there was a long distance of piping required from the panel to a rooftop unit, which was not accounted for at all by the subs.

Bill Bogart

2/25/2020 12:38:45 pm

NFPA 96. I have seen UL 300 wet chemical systems protect this equipment. The manufacturers like Ansul or Kidde would need to be consulted for proper application, design and installation.

Sanjay K S

3/17/2020 12:07:39 pm

Kitchen hood fire protection systems can be used in this case. This system will protect both kitchen hood and kitchen equipments from major fire hazards. Systems using fusible.link detection method and heat sensor tube are available in market. This system is designed as per NFPA 96 and LPS 1223 standards. For more details please log on to www.naffco.com

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Protection for Kitchen Exhaust Filtration Unit?

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