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3 stacks kitchen carson1/10/2024 Single or combined Type II exhaust systems for food-processing operations shall be independent of all other exhaust systems. Single or combined mechanical exhaust systems for environmental air shall be independent of all other exhaust systems.ĭryer exhaust shall be independent of all other systems. Type I exhaust systems shall be independent of all other exhaust systems except as provided in Section 506.3.5. retrieved 1 original source 501.2 Independent System Required This chapter shall govern the design, construction and installation of mechanical exhaust systems, including exhaust systems serving clothes dryersand cooking appliances hazardous exhaust systems dust, stock and refuse conveyor systems subslab soil exhaust systems smoke control systems energy recovery ventilation systems and other systems specified in Section 502. Venting codes are also available asa free, downloadable PDFs at VENTILATION CODES copies of venting codes from various state authorities who publish for public access their adopted copy of the IMC or other ventilation standards. International Mechanical Code 2015, Chapter 5 Exhaust Systems, Section 501 General through section 505, Domestic Kitchen Exhaust Equipment - available for viewing free or top copy for fee fee from iccsafe at Kitchen & Bath Vent Fan shared exhaust duct systems are prohibited by the model building codes such as the IMC International Mechanical Code 2015, Chapter 5 Exhaust Systems, Section 501 General through section 505, Domestic Kitchen Exhaust Equipment … However, grease fires on teh residential cooking surface continue to occur, almost always the result of unattended cooking. Residential hood exhaust ducts are almost never cleaned, and there is no evidence that this causes fires. While there is also discussion of a fire risk in residential kitchen exhaust vent ducts, in part because they are virtually never cleaned.ĪSHRAE in HVAC Applications 33.36 notes that That’s because a kitchen exhaust fan system that has to handle greasy exhaust. retrieved 1, original source, UTAH adoption copy of the IMC, Details Such ducts shall have smooth inner walls, shall be air tight, shall be equipped with a backdraft damper, and shall be independent of all other exhaust systems. The design requirements and materials are different between bath exhaust vent systems and kitchen exhaust vent systems, and such sharing is prohibited by the model mechanical codes and shared ducting are likely to be prohibited by local building codes and code inspectors.Īuthority: 2015 International Mechanical Code, Section 505, Domestic Kitchen Exhaust Equipment, 505.1, Excerpt: You cannot (by code) and should not (by practical reasoning) share exhaust venting between a kitchen exhaust and a bathroom exhaust fan. It's Not OK to Share Bathroom Fan Duct with Kitchen Exhaust Fan Duct Question: bath fan and kitchen fan use the same exhaust pipe?Ĭan the bath fan and kitchen fan use the same exhaust pipe through the roof? Reply: No. We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. We discuss bathroom exhaust vent codes, specifications, advice. We include bathroom venting code citations and the text also explains why bathroom vent fans are needed and describes good bath vent fan choices, necessary fan capacity, and good bath vent fan and vent-duct installation details. This article series describes how to install bathroom ventilation systems, fans, ducts, terminations. We explain why such shared ductwork is both prohibited by model building codes such as the IMC and also why it's a bad idea. What about sharing a common exhaust vent fan and duct system that draws air from both kitchen and bath areas. Is it acceptable for a bathroom exhaust fan to share a kitchen exhaust fan duct? Not really. We have no relationship with advertisers, products, or services discussed at this website.īathroom exhaust vent fan and kitchen exhaust vent fan duct Q&A InspectAPedia tolerates no conflicts of interest.
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