Published at Wednesday, 30 January 2019. Kitchen Window and Ventilation Hood. By Osvald Henriksen.
Moreover, in a house with an atmospherically vented water heater, a 1,200-cfm GE Monogram range hood may cause backdrafting of flue gases, even if the water heater was originally installed in compliance with NFPA and ASHRAE standards. So complying with these standards for water-heater installation won’t keep you out of trouble.
If you prefer to install a passive makeup air duct rather than a powered makeup air unit, the duct must include a motorized damper that is wired to come on simultaneously with the range-hood fan. Broan sells motorized dampers for this purpose, and also provides detailed and useful installation instructions.
Here’s the new IRC provision, which is found in section M1503.4: “Exhaust hood systems capable of exhausting in excess of 400 cfm shall be provided with makeup air at a rate approximately equal to the exhaust air rate. Such makeup air systems shall be equipped with a means of closure and shall be automatically controlled to start and operate simultaneously with the exhaust system.
Any content, trademark’s, or other material that might be found on the Acaysha website that is not Acaysha’s property remains the copyright of its respective owner/s. In no way does Acaysha claim ownership or responsibility for such items, and you should seek legal consent for any use of such materials from its owner.
Copyright © 2019 Acaysha. All Rights Reserved.