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Window Template for AC Unit
In a message dated 5/13/08 8:56:15 AM, treyjung@... writes:
I've placed the AC unit on top of the bus but found it cold when sleepingYup....nothing like having to snuggle down under the covers when it's a 93 degree night with 90 percent humidity. Of course.....you can turn down the the AC to be barely cooling. I think you will find that mounting the AC in the front door window will not cool the upper bunk enough to be comfortable. (at least in Texas) Cold air is heavy and tends to fall, not rise. That's why putting the AC in the luggage rack and having it blow through the window, air bouncing off the angled roof and descending down into the vehicle works so well. I use several small 12v fans to move the cool air around, including one I clip to the poptop handle which helps move the air out of the upper bunk area and down into the lower area. They are a little 'buzzy' but after an all nighter doing astronomy I don't notice. Kent Kirkley '97EVC Dallas **** Wondering what's for Dinner Tonight? Get new twists on family favorites at AOL Food. () |
Trey Jung
I'm looking to see if anyone has a template for a 2001 EVC to mount an AC unit in the front window. I've seen AC units mounted in Bay Window buses and Vanagon's this way. Would like to build a frame to hold the AC unit there.
I've placed the AC unit on top of the bus but found it cold when sleeping up top.... Thanks, Trey Houston |
You can quiet those buzzy fans, Kent, by running them at reduced
voltage. I've run the 10 inch 12 volt WalMart fans at 4.5 volts and you can hardly tell they are running. Of course when you run them like that you have to mount them where they blow directly at you because they are not moving nearly as much air. Rob Dalton 97 EVC Virginia --- In ev_update@..., kgkirkley@... wrote: sleeping it's a 93up top....Yup....nothing like having to snuggle down under the covers when degree night with 90 percent humidity. Of course.....you can turndown the the AC to be barely cooling.will not cool the upper bunk enough to be comfortable. (at least in Texas)the AC in the luggage rack and having it blow through the window, air bouncingoff the angled roof and descending down into the vehicle works so well.one I clip to the poptop handle which helps move the air out of the upperbunk area and down into the lower area. They are a little 'buzzy' but after an allnighter doing astronomy I don't notice. |
Boone
That's interesting... Rob, how do you do that... run them at reduced
voltage that is? BD --- In ev_update@..., "rvdalton" <rvdalton@...> wrote: like that you have to mount them where they blow directly at you becausewhen sleepingwindowit's a 93up top....Yup....nothing like having to snuggle down under the covers whendegree night with 90 percent humidity. Of course.....you can turndown the theAC to be barely cooling. will notTexas)cool the upper bunk enough to be comfortable. (at least in bouncingCold air is heavy and tends to fall, not rise. That's why puttingthe AC inthe luggage rack and having it blow through the window, air off thewell.angled roof and descending down into the vehicle works so includingI use several small 12v fans to move the cool air around, one Iupperclip to the poptop handle which helps move the air out of the bunk area andalldown into the lower area. They are a little 'buzzy' but after an nighterdoing astronomy I don't notice. |
Hi Kent. There are several ways you can run DC fans at reduced
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voltage. Since I've acquired a box full of AC to DC adapters including one universal AC to DC adapter, I use a 6 volt or less adapter on a small (150 Watt) inverter (DC to AC). The goal is to get an inverter that is small enough so it doesn't have its own cooling fan and creates no noise. Another way is to run two 12 volt fans in series, if they are both the same they should run at 6 volts (although mystery of mysteries one will run backwards). Perhaps the simplest is to get a universal DC to DC adapter for $15 at Home Depot where you can adjust the voltage to what you need. By the way, I've run one 12 volt fan at 4.5 volts for many hours with no adverse affects, so I think they run reliably at reduced voltage. Rob --- In ev_update@..., "Boone" <bdayley@...> wrote:
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jack_son_73
Rob, BD & Kent -
The direction is determined by the polarity. You can reverse the 2 leads on the 'backwars' fan to make them run the same way. A $1 5V or 6V 3-terminal regulator will take the 12-15V DC in and run a small fan, etc., at 5 or 6V at up to 1 or 1.5A [depending on specs of the 7805 or 7806 regulator. Regards, Jack_son ================================================ --In ev_update@..., "rvdalton" <rvdalton@...> wrote: including one universal AC to DC adapter, I use a 6 volt or less adapter on aif they are both the same they should run at 6 volts (although mysteryof mysteries one will run backwards). Perhaps the simplest is to get aadjust the voltage to what you need. By the way, I've run one 12 volt fanat 4.5 volts for many hours with no adverse affects, so I think theyrun reliably at reduced voltage.reduced andvoltage that is? themyou can hardly tell they are running. Of course when you run becauselikethat you have to mount them where they blow directly at you whenthey are not moving nearly as much air.when turnit's a 93degree night with 90 percent humidity. Of course.....you can puttingdown the thewindowAC to be barely cooling. anthe AC inbouncingthe luggage rack and having it blow through the window, airoff thewell.angled roof and descending down into the vehicle works soincludingI use several small 12v fans to move the cool air around,one Iupperclip to the poptop handle which helps move the air out of thebunk area anddown into the lower area. They are a little 'buzzy' but after allnighterdoing astronomy I don't notice. |
Dave
Trey,
Not sure what you mean be a template--but we did just what you're asking about. I'll take some dimensions when I'm home tonight, if you like. It's basically like a saddle--a platform to hold the AC unit and two wide slats that drop down on either side of the window opening. Then we stuff it with foam around the sides (foam we took from an old sofa cushion.) It keeps us plenty cool during the day or night--even here in S. Florida. BTW, we originally started with a 5000 BTU unit (I THINK it was 5K) but eventually took it back for a 6K so keep that in mind. We made sure the platform leans a bit to the outside of the vehicle so that the condensation ends up outside. And we lay a clean throw run over the window frame before we put the platform on it--to protect against serious scratches. I'll send you more when I can. Dave 2001 Weekender in Hollywood FL and dealing with what seems to be immobilizer issues AGAIN this morning...UGH! --- In ev_update@..., "Trey Jung" <treyjung@...> wrote: an AC unit in the front window. I've seen AC units mounted in Bay Window buses and Vanagon's this way. Would like to build a frame to hold the AC unit there. sleeping up top....
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Conrad Klahn
Hi,
I ran an AC unit in the front window and was comfortable upstairs using fans to blow the cold air up. That was in Hot Springs heat (+90 at night). I'll have to experiment with putting the unit upstairs. We have a weekender, so it might be a bit precarious. Insulating the canvas helps with temps and noise. Conrad |
Conrad,
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The EVC guys have a front window that unzips. Our Weekenders don't have that so there really is now way to put an AC unit up top. --Stephen At 02:47 PM 5/19/2008, you wrote:
Hi, |
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