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Old 03-12-2017, 11:51   #31
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Re: Bilge...Why Is There Water?

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Originally Posted by Cadence View Post
My bad, lack of thinking much about it. He is looking at the little piss hole for the AC cooling discharge not a bilge pump discharge.
Bingo that's correct
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Old 03-12-2017, 12:13   #32
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Re: Bilge...Why Is There Water?

When AC is on sea water pumps constantly as long as the compressor is on. Yes, it moves a lot of water. Refrigeration units not so much.
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Old 03-12-2017, 13:08   #33
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Re: Bilge...Why Is There Water?

No one mentions a generator? A baby seawasp?
I got one alongside me! Something keeps tripping the shore power & the genny takes over....
A big no-no in the marina but he's working on it ........... one day ......
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Old 03-12-2017, 13:35   #34
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Re: Bilge...Why Is There Water?

As a small boat owner (both the boat and the owner?) I wonder that as well when I walk the dock. Glad to know, finally!
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Old 03-12-2017, 13:56   #35
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Re: Bilge...Why Is There Water?

In the northern latitudes, hull sweat with dew point differential.... no ac drainage though 😉
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Old 03-12-2017, 15:09   #36
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Re: Bilge...Why Is There Water?

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Originally Posted by Cadence View Post
My bad, lack of thinking much about it. He is looking at the little piss hole for the AC cooling discharge not a bilge pump discharge.
Hardly a little piss hole. The bigger AC units put out cooling water through a 1" hose at around 10 gpm.
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Old 03-12-2017, 15:32   #37
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Re: Bilge...Why Is There Water?

Taste it.
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Old 04-12-2017, 01:26   #38
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Re: Bilge...Why Is There Water?

Air/con is the most common and if the compressor is running the cooling pump is dumping water out the side. Nothing visible to differentiate it from a similar size bilge pump. Even small unit can run a garden hose size flow.

Water cooled refrigeration is less common but similar issue.

Standard shaft propulsion with older style seals will result in short intermittent bilge pump activation. They are supposed to leak a drip a couple times per minute. Hated them on our first boat as it meant the bilge was perpetually wet.

Air/Con Condensation: Some will plumb the condensation to drain into the bilge (others use a venturi pump action to send it out with the cooling pump water.). Not a huge issue but not ideal either. This will result in intermittent bilge pump activation. We had the venturi pump fail once and found out our little 12k btu air/con unit was pulling about 5 gallons of water a day out in condensation with the shop vac, so it can be significant.

Water cooled generators will also pump a continuous flow of water while running but most don't run them when at a dock with shore power.
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Old 04-12-2017, 01:51   #39
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Re: Bilge...Why Is There Water?

Many boats, especially in the higher humidity areas run their AC 24/7 at the docks. The reason is not to keep the boat cool but to remove the humidity from a closed up boat. Mold and the problems it brings is a lot more expensive to fix than occasionally replacing worn out AC units.
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Old 04-12-2017, 03:30   #40
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Re: Bilge...Why Is There Water?

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Geeez who owns air conditioners that put at that amount of water, sure they do a constant trickle because they are a dehumidifier as well. If someone has a fairly large reefer going with salt water cooling then you certainly will get a steady stream there or if a watermaker is running you'll get a pretty good stream of water there as well.
Our deep freezer water pump puts out 2.5 gallons per minute while the freezer is running.
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Old 04-12-2017, 05:33   #41
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Re: Bilge...Why Is There Water?

Ok... So I didn't know that the AC was water cooled. I would think that is what is going on. Especially at the boat shows where they run constantly due to the doors always being open.

I always learn something here...
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Old 04-12-2017, 07:56   #42
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Re: Bilge...Why Is There Water?

A humorous take on it...

https://www.coastalclimatecontrol.co...auderdale.html

Why do boatbuilders feel the need to install AC and Fridge cooling water outlets in such a way to make as much noise and splash as possible??? The way some of these boats throw water around, I'd be up every ten minutes all night taking my own leak...

On our boat outflows gently flow out at the the waterline without a sound the--way they always should be.
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Old 04-12-2017, 08:01   #43
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Re: Bilge...Why Is There Water?

October? Annapolis?? Air Conditioning?
I'd be looking elsewhere I think.
Have a look at the prop shaft seal and see if it's a drip type? You may also have a leak at a thru hull to hose connection. I have encountered situations where nylon/ plastic thru hulls actually distort when the hose clamps have been torqued up, forcing the fitting to be out of round; thus leaking into the boat, unbeknownst by the owner.....for years.
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Old 04-12-2017, 08:46   #44
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Re: Bilge...Why Is There Water?

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Originally Posted by 01kiwijohn View Post
October? Annapolis?? Air Conditioning?
I'd be looking elsewhere I think.
Have a look at the prop shaft seal and see if it's a drip type? You may also have a leak at a thru hull to hose connection. I have encountered situations where nylon/ plastic thru hulls actually distort when the hose clamps have been torqued up, forcing the fitting to be out of round; thus leaking into the boat, unbeknownst by the owner.....for years.
many are reversible as heat pumps thereby heating the boat as well as cooling so it is quite normal for them to run year round
Btw john what marina are you in I have one at foss harbor.
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Old 04-12-2017, 10:31   #45
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Re: Bilge...Why Is There Water?

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Why do boatbuilders feel the need to install AC and Fridge cooling water outlets in such a way to make as much noise and splash as possible??? The way some of these boats throw water around, I'd be up every ten minutes all night taking my own leak...

On our boat outflows gently flow out at the the waterline without a sound the--way they always should be.
At or below the waterline means a sinking risk if there is a failed thru hull. Also, below the waterline, requires extra power for the same water flow as there is more resistance.

Dribbling out will leave mineral streaks on the hull as the edges of the wet area dry.

Above the waterline with a little noise, makes for an easy check that the pump is working and not clogged. I know the first thing I do when turning the air/con on is check for water. A lot easier to stick my head out the door and listen rather than go out and lean over the side to see if water is coming out.
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