What size ventilation grilles do I need to be up to National Fuel Gas Code? I can not find this info anywhere on the web for free. Everyone wants you to "Buy the book". I don't want to. Here it is. My type fuel is LP Gas. 67,200 Btu/Hr is the maximum the space can support. 76,000 Btu/Hr is the actual amount of Btu/Hr used.I would never actually use that much though, because that would be considering that I had my oven and all 4 burners on AND my vent-free fireplace going all at the same time. However, those are the actual figures just in case I did. I don't know what other information you might need, but I just don't want to pay $35 bucks for that one time piece of info. (Know what I mean?) I got this information from a work sheet that came with my vent-free fireplace, but it says "Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for combustion and ventilation for the required size of ventilation grills or ducts" I know I need 2 vents- 1 within 12 " of the ceiling and the other within 12" of the floor. I just need to know what size. :)
Well, Quite simply, I want to know what size fresh air grills/vents-ie; (4"x8"--6"x12"-12"x12" etc; etc.) do I need to install in the room { for fresh outside air or air from an adjoining room} for fresh air ventilation, since I just installed a new vent-free fireplace. I'm just a do it your selfer but, as you can see from my figures above, the Btu/Hr used is more than the maximum Btu/Hr the space ( the room) can support. In other words without EXTRA ventilation, the gas appliances would burn up all the oxygen in the room and then they would go out and I would probably suffocate. Is that a little clearer now? The National Fuel Gas Code actually have (REQUIRED) grill sizes. If anyone knows about this requirement then they should be able to figure it out for me. Thanks again! P.S. The room size is 14' wide x 32' long x 8' high (If that might help)
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