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Old 09-09-2011, 09:53 AM   #1
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Another Custom Range Hood


Hello,

Still working on the house with the removed appliances and HVAC. The HVAC job is on the backburner right now while we gradually move. Currently doing the planning on outfitting the kitchen.

My wife fell in love with a fire-breathing cooktop by "Capital". This sucker has a central burner that does 20,000 BTUH! Naturally, such a rocketship needs a good range hood, and we have chosen a Kobe that can flow 1000CFM. What appeals to me about the Kobe is that it has a very LARGE squirrel cage blower, that should be pretty quiet at more pedestrian flows.

Hey, that 1000 CFM has to come from somewhere. I was already considering an Aprilaire fresh-air damper because the house is so tight. The Aprilaire only has a timer. You can set it to flow 5 minutes per hour etc.

Now I see that Broan makes "makeup air dampers" which are very similar to the Aprilaire, except they just have a wire to turn on, turn off. A bit cheaper too.

As a gadget freak, I think I can make the Broan serve dual function.
Makeup air for the range hood, AND periodic ventilation as required.

How to figure out what's required? Simple. I got a CO2 sensor on Ebay that outputs serial data. Either a small computer or my main Linux server can monitor the CO2 level and automatically flow exterior air if and when when it becomes objectionable.

Fun, fun, fun .

- JerryK

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Old 09-09-2011, 10:37 AM   #2
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Another Custom Range Hood


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Originally Posted by jerryk1234 View Post
. How to figure out what's required? Simple. I got a CO2 sensor on Ebay that outputs serial data. Either a small computer or my main Linux server can monitor the CO2 level and automatically flow exterior air if and when when it becomes objectionable.

Fun, fun, fun .

- JerryK

CO or COČ ?

Fuel burning appliances produce CO.

COČ is a harmless inert gas, unless the level is extreme.

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Old 09-09-2011, 11:29 AM   #3
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Another Custom Range Hood


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CO or COČ ?

Fuel burning appliances produce CO.

COČ is a harmless inert gas, unless the level is extreme.
Co2. I'm worried about day-to-day IAQ issues in this very well sealed modern house. There are CO detectors to warn about malfunctioning gas equipment. People breath o2 and exhale water and co2. Inside a house that's sealed like a fishtank. Maybe it's not really an issue, but measurements will tell.

But if I have to supply makeup air for the range hood anyway....

- JerryK
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