Water in bilge when I turn on ac

[pdragula]

Questions:

I recently replaced strainer. Pump and strainer are not leaking. I have a 42 carver.

1 where is water coming from in bilge?
2. Why does water come out exhaust when I turn on ac?


Thanks for your help.

[chpsk8]

Where does your ac water exit? Is that the water exiting the exhaust? I’ve seen a few boats set up that way. My Carver has two thru hulls, one on each side for the ac water.
You’ll need to do some tracing of water lines. In through the bottom, into the strainer, then on to the ac units(s). Through the ac units and out to the thru hull. There’s a surprising amount of water line in an ac system.
Also check the condensate drain and pan. If you are getting a lot of water it probably isn’t that, but worth checking to see if the drain line is plugged.

[Viper]

Fred (waybomb) can probably confirm the location of the discharges on the 4207, I can't recall. Some models do discharge from the same area as the engine exhaust. My mid and aft AC units discharge that way. My v-berth discharges just above the waterline at the bow. I love this setup as you can't even hear when my units are running unlike my neighbours who keep me up all night with theirs pouring overboard a couple of feet from the waterline.

Water in the bilge could be from several sources so it's a matter of checking all the through hull hardware for leaks, engine and generator leaks, fresh water system leaks which could be lines, fittings, hot water tank, fresh water tank, etc. While we're on the subject of air conditioning though, they discharge condensate at a pretty good rate depending on atmospheric conditions. In later applications, the condensate discharges into shower sumps, then discharges overboard. Condensate in earlier years simply drained into the bilge. Again, Fred may also be able to confirm if your vintage came with shower sumps which the condensate should be draining into. If you have them, check to make sure they're draining in there properly.

[buster53]

How much water are we talking about...ounces or lots of gallons?
If ounces, most likely the condensation is not making its way to the sump pump or the sump pump isn't working.
If lots of gallons, then some of your cooling water is leaking and not making its way to overboard discharge. And yes, as mentioned, some boats do discharge AC cooling water thru engine exhaust ports.

[pdragula]

Ugh!!!!! I haven’t used the Ac System since October. I turned it on and found it is leaking even more, in gallons! I’ve torn the boat apart three times and traced all of the lines from the intake to the water pump and to each unit. No leaks but bilge fills up. I see water coming out of bow with good pressure and out of port exhaust.

I don’t see how ac is connected to exhaust to be able to drain that way. What am I missing?

[Viper]

As I mentioned above, AC discharging into the an engine exhaust channel in the boat is not uncommon. Mine is set up that way. Have you checked the discharge lines on all the units? Maybe one has failed or come off. Hopefully Fred remembers his 4207 setup and will chime in.

[buster53]

QR_BBPOST Ugh!!!!! I haven’t used the Ac System since October. I turned it on and found it is leaking even more, in gallons! I’ve torn the boat apart three times and traced all of the lines from the intake to the water pump and to each unit. No leaks but bilge fills up. I see water coming out of bow with good pressure and out of port exhaust.

I don’t see how ac is connected to exhaust to be able to drain that way. What am I missing?

Ok, you traced the lines to each unit, but have you traced the lines from the unit to the overboard discharge?
And again, it’s not unusual for the discharge to go out an engine exhaust port. I used to have a 3807 with 3 AC units. The unit in the V berth had its own discharge thru hull at the bow, but the other 2 units discharged thru the exhaust.

[pdragula]

Hey guys,

Yes I have traced all lines and no leaks. I don’t see how it is connected to exhaust. Water is discharging from exhaust, front of hull and now bilge.

Anyone know where to look for connection on exhaust from ac?

[bud37]

QR_BBPOST Hey guys,

Yes I have traced all lines and no leaks. I don’t see how it is connected to exhaust. Water is discharging from exhaust, front of hull and now bilge.

Anyone know where to look for connection on exhaust from ac?

Did you have the unit running when you were tracing and inspecting all the lines from the AC to the exhaust ?

[pdragula]

I don’t need to turn on units for bilge to fill, just the pump.