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Oscar
Master Marine Consultant

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USA
2030 Posts

Initially Posted - 08/13/2003 : 10:17:46

Any reason why I would not stick a marine airconditioning unit in the same compartment as the battery?

Oscar
250WB#618 Lady Kay on the Chesapeake
<img src="http://www.woodenshoemusic.com/Images/familypics/Forumshots/sunglitter.JPG" border=0>

Edited by - on

Dave B
Admiral

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Mali
863 Posts

Response Posted - 08/13/2003 : 11:17:43

Where does the hot air go? Or is it water-cooled?

Dave Bristle, 1985 C-25 #5032 "Passage" SR/FK/Dinette/Honda in SW CT

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osmepneo
Past Commodore

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USA
1420 Posts

Response Posted - 08/13/2003 : 11:21:28

Oscar,

i don't know why not. Is there anything combustable in the marine air conditioner? And, DAve's question is a good one. If the air around the battery becomes heated, would that effect the batteries operation?

I don't know, but these are some questions I'd want to get answered.

Don Peet
c25, 1665, osmepneo, sr/wk
The Great Sacandaga Lake, NY

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svmoxie
Past Commodore

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USA
331 Posts

Response Posted - 08/13/2003 : 14:22:17

Lead acid batteries outgas hydrogen which is flammable/explosive. Does the AC unit have a solenoid switch that could spark? How is the compartment vented?

There are too many unanswered variables to give good advice to you and even then it is only that, advice. I would highly recommend that you contact the AC manufacturer regarding your installation options and get their instructions. Even if it is a used unit most dealers will go out of their way to help.

Clif Thompson
Treasurer C-25/250 National Association.
svMoxie '81 25 sk

Edited by - on

Dave B
Admiral

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Mali
863 Posts

Response Posted - 08/13/2003 : 14:30:30

The hydrogen point is good... My point is that A/C units generate more heat than they do cold air. If you put one in a closed space, it will make the space warmer--not colder, and it will generate some condensation in the process. (That's why home units hang in windows, and central units have compressors outside and drain hoses from the condensors.) The heat from the inside air has to be transferred somewhere.

Dave Bristle, 1985 C-25 #5032 "Passage" SR/FK/Dinette/Honda in SW CT

Edited by - on

JoergK
Navigator

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USA
140 Posts

Response Posted - 08/13/2003 : 15:30:25

Oscar,
the picture of the Lady shows an interesting detail - the blue raised seat. Where did you get that from and how much did it cost?

Joerg
86C25 SR-SK Second Wind
<img src="http://im1.shutterfly.com/procserv/47b3d632b3127cce8cc1e80685990000000010" border=0>

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Oscar
Master Marine Consultant

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USA
2030 Posts

Response Posted - 08/13/2003 : 17:50:21

Thanks for all the comebacks.....

The AC unit I have in mind will be a proper marine unit, thus water cooled. I guess I'll have to go and look to see what kind of battery I have......

The compartment I have in mind is the aft area, behind the bulkhead of the 250. The unit fits, I'd have to glass in a shelf next to the battery. The condensate can drain into the bilge through my little drain mod hole...<img src=icon_smile.gif border=0 align=middle> The compartment would be vented through the return (filtered) register, which would take the place of the battery acess hatch. As per generally accepted installation procedures the unit would not seal up to the return register, but just sit in the middle of the compartment. The whole compartment could be considered the return "plenum". I would think this would take care of any H-2...

The blue raised seat is the standard 250 aft pulpit perch, hoewever, I had a local (car) upholstery guy make cockpit cushions for me (3" closed cell foam, blue sunbrella).

Oscar
250WB#618 Lady Kay on the Chesapeake
<img src="http://www.woodenshoemusic.com/Images/familypics/Forumshots/wingonwing.JPG" border=0>

Edited by - Oscar on 08/13/2003 17:55:15

Edited by - on

OJ
Master Marine Consultant

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USA
4382 Posts

Response Posted - 08/13/2003 : 20:33:25

I believe Mark Melchor (sp?) has a Tech Tip for this for your model boat.

Edited by - on

ssteakley
Captain

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USA
467 Posts

Response Posted - 08/13/2003 : 21:57:43

Oscar, how much does it weigh??
Steve

<img src="http://im1.shutterfly.com/procserv/47b3dc32b3127cce94d57c8cff3b0000001010" border=0> Moon Chaser #385WK <img src="http://www.catalina25-250.org/forum/forum1.gif" border=0>

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Oscar
Master Marine Consultant

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USA
2030 Posts

Response Posted - 08/13/2003 : 22:33:44

I'm looking at a couple of different units all around 6-10K BTU and 30-50 pounds. I know I'm supposed to keep the weight out of the back end, on the other hand when we cruise we have four humanoids with an ample supply of gear.....my guesstimate is in excess of a half a ton.....

On the last trip she was up to the waterline, and guess what? Nice and stable, a lot less weather helm, 15 knots of air with a full main and 110 jib, sailing 35-40 degrees to the wind, with just an ocassional crack in the mainsheet for a little farmers reef in the puffs, but tracking very nicely. So, I'm not too worried about the 40 or so pounds in the back.

Oscar
<img src="http://www.woodenshoemusic.com/Images/familypics/LKforumshot.jpg" border=0>
Lady Kay 250 WB #618
In the driveway in Behtlehem, PA ready to go anytime.

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Bryan Beamer
Master Marine Consultant

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USA
1038 Posts

Response Posted - 08/14/2003 : 01:59:10

Oscar,

Did you see the advertisement from 2 be cool in the August issue of the Mainsheet? They make an A/C unit especially designed for the C250 wb.

Bryan Beamer
<img src="http://im1.shutterfly.com/procserv/47b3d935b3127cce8ab87c3b48020000000010" border=0>
Daylight Again
C250wk #495
2003 National Champion

Edited by - on

Oscar
Master Marine Consultant

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USA
2030 Posts

Response Posted - 08/14/2003 : 12:16:03

Hadn't gotten that far yet, thanks for pointing it out. I have a call in with them. I'll be back with a detailed report.

Oscar
250WB#618 Lady Kay on the Chesapeake
<img src="http://www.woodenshoemusic.com/Images/familypics/Forumshots/wingonwing.JPG" border=0>

Edited by - Oscar on 08/14/2003 12:16:55

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