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396 a/c discharge problem?
- paulmadore
- Scurvy Dog
- Posts: 4
- Joined: February 17th, 2019, 5:13 pm
- Vessel Info: 2000 Carver 396
Cummins Diesel Engines - Location: Midland Ontario
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396 a/c discharge problem?
Hoping there's someone with a theory on how this can be.
- Midnightsun
- CYO Supporter
- Posts: 2851
- Joined: March 27th, 2016, 2:27 pm
- Vessel Info: The Midnight Sun
2007 41CMY
Volvo D6-370's - Location: Montreal, Canada
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Re: 396 a/c discharge problem?
As for the AC condensate, this should run into the shower sump and get pumped overboard when the float activates the pump. I have a feeling the problem lies there as this is a rather problematic area. The shower sump should be cleaned out annually at least, not just a peek in the box and call it a day.
Welcome to the forum by the way.
- paulmadore
- Scurvy Dog
- Posts: 4
- Joined: February 17th, 2019, 5:13 pm
- Vessel Info: 2000 Carver 396
Cummins Diesel Engines - Location: Midland Ontario
- Has thanked: 3 times
Re: 396 a/c discharge problem?
- bud37
- Admiral
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Re: 396 a/c discharge problem?
paulmadore wrote:Source of the post I've been chasing an issue with water in my bilge that seems to point to my a/c units. In troubleshooting this problem I decided to verify the purpose of all of my above-waterline thru hull fittings (fittings shown in owners manual don't match actual). When I run my a/c units (separately), all three discharge water through the same three fittings. The three locations are port side forward, port side aft, and starboard side aft. Additionally, my aft shower sump also discharges through the same starboard location.
Hoping there's someone with a theory on how this can be.
Welcome to the forum......have a real good look where the ac unit condensate drains go.....in our boat it goes out it's own thru hull but this boat only has one unit.......could just be a hose has a split from the winter or a loose clamp/ fitting.
All three of those units will use the one common raw water cooling pump, is my guess.
- bud37
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Re: 396 a/c discharge problem?
- Midnightsun
- CYO Supporter
- Posts: 2851
- Joined: March 27th, 2016, 2:27 pm
- Vessel Info: The Midnight Sun
2007 41CMY
Volvo D6-370's - Location: Montreal, Canada
- Has thanked: 257 times
- Been thanked: 1099 times
Re: 396 a/c discharge problem?
bud37 wrote:Source of the post I looked at your boats parts schematics and it show on there the condensate drains are split between the forward sump and the aft sump.
Thats like mine, the main and aft cabin AC condensates run into the aft shower sump and the forward AC condensate runs into the forward shower sump.
Just so there is no confusion. The condensate is just that, dripping water from the AC that ends up in the AC pan and then gets directed overboard, a shower sump or sometimes just into the bilge. Then there is the AC circulation pump which draws water from the lake/ocean and runs it through the AC and then back out again. In a multi AC configuration this is normally 1 pump supplying water to all units.
- paulmadore
- Scurvy Dog
- Posts: 4
- Joined: February 17th, 2019, 5:13 pm
- Vessel Info: 2000 Carver 396
Cummins Diesel Engines - Location: Midland Ontario
- Has thanked: 3 times
Re: 396 a/c discharge problem?
- paulmadore
- Scurvy Dog
- Posts: 4
- Joined: February 17th, 2019, 5:13 pm
- Vessel Info: 2000 Carver 396
Cummins Diesel Engines - Location: Midland Ontario
- Has thanked: 3 times
Re: 396 a/c discharge problem?
- Midnightsun
- CYO Supporter
- Posts: 2851
- Joined: March 27th, 2016, 2:27 pm
- Vessel Info: The Midnight Sun
2007 41CMY
Volvo D6-370's - Location: Montreal, Canada
- Has thanked: 257 times
- Been thanked: 1099 times
Re: 396 a/c discharge problem?
paulmadore wrote:Source of the post I have one pump that feeds all three units through a manifold (I'd attach a photo of my technical skills permitted). Is it possible that when one ac unit comes on and calls for water, I have water going through all three whether they are turned on or not? This would explain water discharge through all three hull fittings regardless which unit is turned on.
Yep, this is how it works.
- mjk1040
- Admiral
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- Vessel Info: 1998 355 AC/MY "Deja Vu"
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Re: 396 a/c discharge problem?
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
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