Commercial Kitchen Exhaust Duct Insulation

Case the exhaust duct was not insulated.

Commercial kitchen exhaust duct insulation.

For more information about kitchen extract contact us or call 353 1 456 8200. Leading manufacturer of chimney venting and air distribution products for commercial and residential hvac industries for over 80 years. The zc models are all stainless steel and factory insulated grease duct for use in commercial kitchen exhaust systems which meet the requirements set forth by underwriters laboratories for the ul 2221 standard. Inventors of the positive pressure chimney system selkirk products meet and exceed the requirements of codes and other manufacturer products.

Insulation on the duct in the kitchen offers no protection. Unlike particle deposition in turbulent airflow turbulent vapor deposition is a well understood and documented phe nomena. R 408 30935a 506 2 corrosion protection. Fyrewrap elite 1 5 duct insulation is a two layer flexible enclosure for two hour rated commercial kitchen grease ducts.

Therefore it is likely that many commercial cooking exhaust systems do not ex perience significant temperature differences even with non insulated ducts. Insulation is applied to kitchen ducts as they pass through other compartments. Fyrewrap elite 1 5 duct insulation offers the following product features. Commercial kitchen hood ventilation ducts and exhaust equipment shall be in compliance with nfpa 96 2014 which is the standard of the national fire protection association listed in chapter 15 of the code.

Fyrewrap elite 1 5 duct insulation is tested per astm e2336 and is acceptable as an alternate to a traditional fire rated shaft. Installed as a two layer system fyrewrap elite 1 5 complies with the international mechanical code imc and uniform mechanical code umc. We use insulation to mitigate this risk. They are heavily insulated for zero clearance to combustibles and a two hour fire rated shaft assembly.

The grease hood duct from the ceiling to where it exits the building should be enclosed in a fire rated enclosure or approved fire barrier type insulation see 3m or be listed double wall grease duct see metalfab except if the roof where the duct exits is right above the room hood. All supply and return air ducts and plenums shall be insulated with a minimum of r 5 r 6 insulation when located in unconditioned spaces and a minimum of r 8 insulation when located outside the building.