Blower Recommendation for Wolf Pro Island Hood
Tom Pultz
16 years ago
Featured Answer
Sort by:Oldest
Comments (23)
breezy_2
16 years agolast modified: 9 years agoTom Pultz
16 years agolast modified: 9 years agoRelated Discussions
Internal vs external blower for Wolf pro hood
Comments (9)While we wait for Terrace1919 to respond, I can relate that I have a Wolf Pro Island Hood with their (Broan/Nutone) 1500 CFM (rated) blower on the roof. Duct length from hood to blower is in the 15 - 20 foot range (never measured it). A section of the 10-inch duct incorporates a Fantech silencer. At full power (with MUA path, baffle and other parts pressure losses) flow rate is likely to be around 900 CFM actual through the 10 sq. ft. of hood aperture. One can talk normally around and across the space under the hood. There is noise, mostly baffle hiss due to turbulence, but it is not annoyingly loud for cooking. My blower has some rumble that a re-balancing could help, I suspect. Some of my ducting wears automotive damping material to suppress any conduction of blower noise along the steel duct. This hood fully captures the cooking plume from my 3500W induction wok located under the far end of the hood. Hood height above the counter is about 35 inches. Blower control is via a conventional (at the time) triac/diac circuit above the middle baffle area on the controls side. If you replace the internal blower with an external blower, it would be safest, without evaluating the potential power capability of the existing motor control circuit, to use the same power rating external blower. Otherwise, uprating the embedded blower controller is another possibility, if Wolf is willing or you are an electronics experimentalist. kas...See Morewolf 48” in blower or remote blower hood vent
Comments (46)We fully agree that homeowners should do extensive research including the use of Houzz and other social forms But that also should in our opinion includes speaking to licensed professionals in the supporting fields for their project And that is exactly what we did And we did meet with licensed Structural Engineers , Hvac, general contractor, Electricians and plumbers etc. Every one of them as well researched from their licensing to customer reviews/feedback Houzx is a great form to use but again you don’t really know the background of the people you’re speaking with and their opinions are worth noting but should be validated There comes a point in our experience and knowledge that we have to bow out because we are not professionals in this field Anybody who takes offense to our bowing out should not ...we know limits and cannot provide more than we already have. Please start another strand for future questions as we will not be commenting on this any further....See Morewolf hood - 1200CFM Internal blower- too loud?
Comments (4)Without going wider on the hood, as is desirable to capture rising and expanding plumes, your hood will have a bit less than six square feet of hood entry aperture. Actual flow for this should be about 90 ft/min or 90 CFM/sq.ft. 90 x 6 = 540 CFM actual. To get this, given reasonable ducting, Wolf baffles, and adequate make-up air supply, one might use a factor of 1.5 to specify a zero static pressure blower rating of 810 CFM. Wolf has both internal and external blowers that support this range. You may find them listed vs. the hood type in the back of the Wolf Design Guide, available somewhere on the SubZero/Wolf web site. From a fan curve point of view, the 900 CFM external blower based on the Broan-NuTone 801641 can yield 540 CFM at a pressure loss of 0.95 inches of water column. That is equivalent to a lot of ducting. The 900 CFM Internal blower (801645) can flow 540 CFM at about 0.65 inches. This is likely also adequate, but I would go with an external blower to be able to use a Fantech silencer in between for low noise. Your MUA needs to be sized for low differential pressure loss, but how low depends on the presence or not of combustion appliances that may draw their air from within the house, rather than from a duct to outside. Wolf external blowers electrically integrate trivially with their compatible hoods. I notice Wolf now includes in-line blowers in their listing, so one of those could also be used, with or without a silencer. You need to specify a lot about your architecture before suggestions can be refined. With six burners of flame potential, you might want your cabinet gap to be a more desirable 42 inches and widen your hood appropriately. Required and rated CFM rise proportionately....See Morewolf 42” hood w/ 1200 CFM remote blower?
Comments (9)There is no overkill, but ... Many typical liners, including Wolf's, may not be deep enough (front-to-back) to fully cover front burner plume expansion. I don't see 42-inch liners in my 2021 Wolf Design Guide. Perhaps mine is out of date. If we assume a liner capture aperture of 40 x 19 inches, then the capture area is 5.3 square feet. At a minimum, you want 90 CFM/sq. ft., or in this case about 500 CFM. To get this in a typical pressure loss system (baffles, hood transition, duct, MUA) you will need a roughly 700 CFM rated blower. To keep noise down you will certainly need a silencer in the duct between the blower and the hood. In any case, I strongly encourage you to consider how much of that smoke you want to escape the hood, and hence whether you should go for a deeper hood. If an undersized liner is used in a wood cabinet hood, the uncovered interior should be faced with stainless steel. If there is some volume below the baffles to the bottom edge of the wood hood, then we can consider the hood size to be larger. Not sure if it would be deeper pending more information. If so, we can calculate based on the entire hood entry aperture as see that higher flow rate is called for. Note that the noise from a silenced Wolf hood/blower system (such as I have) will be dominated by baffle hiss, and this could be louder in your case if the large hood entry area is doing actual 90 CFM, and the inner liner area is doing some multiple of that. Check out an Asian restaurant for how far towards the cook the hood entry aperture extends. Scale down from 7 ft to 6 ft hood height. Basic rule: the farther a hood system deviates from standard commercial design, the greater the penalty on either power efficiency or capture and containment efficiency....See Morekaseki
16 years agolast modified: 9 years agoTom Pultz
16 years agolast modified: 9 years agokaseki
16 years agolast modified: 9 years agoTom Pultz
16 years agolast modified: 9 years agokaseki
16 years agolast modified: 9 years agoTom Pultz
16 years agolast modified: 9 years agokaseki
16 years agolast modified: 9 years agokaseki
16 years agolast modified: 9 years agokaseki
16 years agolast modified: 9 years agoTom Pultz
16 years agolast modified: 9 years agoslmral
16 years agolast modified: 9 years agokaseki
16 years agolast modified: 9 years agoTom Pultz
16 years agolast modified: 9 years agokaseki
16 years agolast modified: 9 years agodonander
16 years agolast modified: 9 years agoTom Pultz
16 years agolast modified: 9 years agokaseki
16 years agolast modified: 9 years agodonander
16 years agolast modified: 9 years agokaseki
16 years agolast modified: 9 years agodonander
16 years agolast modified: 9 years ago
Related Stories
KITCHEN OF THE WEEKKitchen of the Week: Casual Farmhouse Looks, Pro-Style Amenities
Appliances worthy of a trained chef meet laid-back country charm in a Connecticut kitchen and pantry
Full StoryTASTEMAKERSPro Chefs Dish on Kitchens: Michael Symon Shares His Tastes
What does an Iron Chef go for in kitchen layout, appliances and lighting? Find out here
Full StoryTASTEMAKERSPro Chefs Dish on Kitchens: How Marc Vetri Cooks at Home
Learn an Iron Chef's kitchen preferences on everything from flooring to ceiling lights — and the one element he didn't even think about
Full StoryKITCHEN DESIGNPro Chefs Dish on Kitchens: Paul Kahan Shows His Urban Sanctuary
Peek inside Kahan's newly redone home kitchen and learn what he considers most important for a cooking space
Full StoryKITCHEN STORAGEStyle Your Open Kitchen Shelving Like a Pro
Follow these do’s and don’ts for arranging items on your kitchen shelves
Full StoryKITCHEN DESIGNHow to Choose the Right Hood Fan for Your Kitchen
Keep your kitchen clean and your home's air fresh by understanding all the options for ventilating via a hood fan
Full StoryKITCHEN DESIGNWhat to Know When Choosing a Range Hood
Find out the types of kitchen range hoods available and the options for customized units
Full StoryKITCHEN APPLIANCESThe Many Ways to Get Creative With Kitchen Hoods
Distinctive hood designs — in reclaimed barn wood, zinc, copper and more — are transforming the look of kitchens
Full StoryKITCHEN APPLIANCESWhat to Consider When Adding a Range Hood
Get to know the types, styles and why you may want to skip a hood altogether
Full StoryKITCHEN DESIGNA Cook’s 6 Tips for Buying Kitchen Appliances
An avid home chef answers tricky questions about choosing the right oven, stovetop, vent hood and more
Full Story
orangedaisy52