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83' 3207 AC question

Discussion of AC's, plumbing and sanitation related issues.
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Paul407
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83' 3207 AC question

Postby Paul407 » June 14th, 2013, 9:21 am

Hello all. I'm straightening out some rigs on a recently purchased 3207 aft cabin. My boat AC water feed has a single seacock with one pump. After the pump the plumbing tee's into two, each feeding one AC unit. Should there be two pumps or is this the OEM set up? Seems the forward unit gets most of the water.

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Vessel Info: 1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glaspar / 1969 Johnson Electrmatic 85
1964 Barron Flat bottom drag boat
A couple of dinghies
Location: Saint Joseph and Trenton, MI
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Re: 83' 3207 AC question

Postby waybomb » June 14th, 2013, 9:32 am

That's normal. Usually there is a contractor panel that both ac pump signals go to, so when either is running, the pump runs.
Thanks
Fred
1964 Barron Flatbottom with BBC Chevy
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572s
http://s4.beta.photobucket.com/user/waybomb/library/
Past - 1988 2807, 1989 4207 Aft
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Re: 83' 3207 AC question

Postby Paul407 » June 14th, 2013, 10:06 am

I believe I have that panel, a small black box behind the port side wall near the fresh water fill. I ask because a second identical pump was given to me when I bought the boat and thought it may have been removed at some time. So it's normal to have a better flow at one AC unit than the other? Like I said, the aft unit only has 1/3 the water output at the forward unit.
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Re: 83' 3207 AC question

Postby Paul407 » June 14th, 2013, 10:07 am

And that's for the quick response.
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waybomb
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Vessel Info: 1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glaspar / 1969 Johnson Electrmatic 85
1964 Barron Flat bottom drag boat
A couple of dinghies
Location: Saint Joseph and Trenton, MI
Has thanked: 27 times
Been thanked: 190 times

Re: 83' 3207 AC question

Postby waybomb » June 14th, 2013, 12:13 pm

My 36 Mariner has one pump for two a/cs with reverse heat, and my 4207 had one pump for 3 reverse cycle a/cs.
I think total BTU was 45,000 or so on the 4207 and one pump handled it all. The water being discharged doesn't get too warm either.
Thanks
Fred
1964 Barron Flatbottom with BBC Chevy
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572s
http://s4.beta.photobucket.com/user/waybomb/library/
Past - 1988 2807, 1989 4207 Aft
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Re: 83' 3207 AC question

Postby Paul407 » June 14th, 2013, 1:27 pm

Sounds good. Thanks for the help.
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Re: 83' 3207 AC question

Postby CYO Admin » June 15th, 2013, 7:52 am

My last boat had one pump for 4 units. 2 x 16's a 10 and a 5.
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tinbanger00
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Vessel Info: 1983 3207 aft cabin

Re: 83' 3207 AC question

Postby tinbanger00 » June 18th, 2013, 10:42 am

my 83' 3207 also has 1 pump,,,,,,had a problem last year of the pump getting hot and shutting down everything....I took it apart and blew it out with an air compressor and some stuff came out ...seems to work fine now.....mayby you also have some crud in the rear unit?
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waybomb
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CYO Moderator
Posts: 1590
Joined: February 5th, 2013, 9:24 pm
Vessel Info: 1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glaspar / 1969 Johnson Electrmatic 85
1964 Barron Flat bottom drag boat
A couple of dinghies
Location: Saint Joseph and Trenton, MI
Has thanked: 27 times
Been thanked: 190 times

Re: 83' 3207 AC question

Postby waybomb » June 18th, 2013, 1:26 pm

My boats all had a strainer as well. You may want to check it by closing the sea cock, opening the strainer, pulling the basket band cleaning it. Reverse assembly. Sometimes the basket looks clean through the sides of the strainer, but could be fouled.

I had an odd situation once on vacation - I sucked a plastic grocery bag into the through hull pick-up and my a/cs quit running on overheat. I pulled the hose, with water gushing in, trying to free the bag. That didn't work. So I took it back out on the lake thinking that would remove it. That did not work, so I had to have somebody jump in the water and dig it out of the through hull grate.
Thanks
Fred
1964 Barron Flatbottom with BBC Chevy
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572s
http://s4.beta.photobucket.com/user/waybomb/library/
Past - 1988 2807, 1989 4207 Aft
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Re: 83' 3207 AC question

Postby Tempus Fugit » June 19th, 2013, 7:57 am

When the system is designed the hoses/pump are sized so the water flow is about the same to each unit. If you see a noticeable difference in water flow from one unit to the other there is a restriction (some type of growth or buildup of something).
If you can get to the units and feel the outlet hoses they should both feel about the same temperature; if one is much hotter you have a restriction.
As others have said one pump for multiple units is very common the system just needs to be maintained and flushed from time to time. NOTE: in the Galveston bay area my system needs to be flushed twice per year.

Dan

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