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Safety -- Make sure you are safe!

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  #1  
Old 2010-02-25, 11:22am
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Default 10" 781 cfm can fan on sale

Hi-
In case anyone is interested, I've found this on sale for $221.81 on bghydro.com.

-Ana
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Old 2010-02-25, 11:26am
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Ana, Just to clarify, the 781 cfm is an older model and it doesn't have a slim profile to fit inside the 10" ducting as the latest 1023 cfm model that I have (and shown in the other thread). You can see the difference here:

http://www.bghydro.com/BGH/Items.asp...TpStatus=1&Tp=
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Old 2010-02-25, 11:42am
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Hi Hayley-
Yea, I saw that it looks like a wheel, but it will be behind my hood, so I think it should be ok. I may have to add a few inches of 10" duct to give it clearance from the wall around the window (if that makes sense).

-Ana
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Old 2010-02-25, 12:05pm
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it would work, but i would not spend that much money for it. IMHO, one of these would work just fine and you could take the $150 in savings and buy some tools and glass. i use one like this adapted using standard duct hardware from a good hardware store.

http://www.amazon.com/Lasko-4900-Per...pd_sim_dbs_k_2
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Old 2010-02-25, 4:01pm
Diane (clarus) Diane (clarus) is offline
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Mark, is that blower designed to be used with ducting? If not, I'd be concerned it would overheat.

-Diane
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Old 2010-02-26, 5:13am
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no it was not designed for use in ducts, that is what the adaptors are for. your torch makes a few CFM of really hot combustion byproducts, the fan moves several hundred CFM, so the 2000F flame temperature is diluted and cooled down by room temperature air to the point that the exhaust duct air temperature is only 10 to 20 degrees hotter that room temperature, well within the fans operational range. how do i know this, because i have this fan and use it in my ventilation system. and i use a major burner with a big flame and the duct is hardly warm.
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Old 2010-03-06, 10:02am
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I might add that the fan Mark is suggesting is in fact a squirrel cage design used for ducted systems. It might take a little more adaptation to your ducting though.
PJ
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  #8  
Old 2010-03-06, 10:15am
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Deb Hopeful Journeys Deb Hopeful Journeys is offline
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Quote:
Originally Posted by laserglass View Post
no it was not designed for use in ducts, that is what the adaptors are for. your torch makes a few CFM of really hot combustion byproducts, the fan moves several hundred CFM, so the 2000F flame temperature is diluted and cooled down by room temperature air to the point that the exhaust duct air temperature is only 10 to 20 degrees hotter that room temperature, well within the fans operational range. how do i know this, because i have this fan and use it in my ventilation system. and i use a major burner with a big flame and the duct is hardly warm.
Thanks to Mark, I too have been using this fan for 6 years now. It works great, takes a little metal bending to retro fit the ducting and is the most economical way to go!!!
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Old 2010-03-06, 10:22am
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Let me try and post a couple photos.


This image shows my ducting, with the fresh air on the left and the exhaust air going out on the right.



Not a great image, but this is a close up of the exhaust air that goes outside. Hubby found the closest ducting that was shaped similar to the opening and then he slight bent to fit.

It really works great!

Let me know if you have any other questions, but Mark knows more then me on this, since it is his design. Oh the black plastic around the duct is insulation. It gets pretty cold here in MN and I wanted to try and prevent heat loss.

HTH,
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Old 2010-03-06, 10:29am
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Yep I just put in a very similar one. Beats my other fan by a long shot.
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