38 air conditioner

Jun 19, 2011
5
Hunter 38 Port Aransas
Does anyone have a 38 with air? Our rear unit only puts out a small amount of water while the forward unit puts out alot. Any thoughts about this?
 
Apr 11, 2010
979
Hunter 38 Whitehall MI
I have 38 with dual air units. When you say "puts out a small amount of water" what are you referring to?
The water coming from the recirculating pump that discharges through the hull or are you talking about the amount of condensation the cooling coil discharges into the bilge?
 
Jun 14, 2011
76
Hunter 37.5 Legend 1993 TX
Also do you have 2 independent systems, or a split system? (A split system has 1 compressor + an evaporator in each cabin.)
 
Jun 11, 2011
1,243
Hunter 41 Lewes
I would think you're talking about the water coming out the thru hull that takes away the heat from the condenser in each unit. On my 41 there is a single pump located in the bilge section in front of the engine that Tees and feeds both units. There can be any manner of blockage in the line leading to the aft unit. You can remove it from the Tee and put a garden hose down it to increase the pressure and clean it out. I usually limit the amount of water pressure so as not to cause damage. Although I have gone at it full blast on one occasion when I was truly annoyed with it with out incident. There didn't happen to be a blockage at that time. Don't ask.
 
Apr 11, 2010
979
Hunter 38 Whitehall MI
Also do you have 2 independent systems, or a split system? (A split system has 1 compressor + an evaporator in each cabin.)
Ours is two separate compressor / coil units with a shared circulating pump.
I would think you're talking about the water coming out the thru hull that takes away the heat from the condenser in each unit. On my 41 there is a single pump located in the bilge section in front of the engine that Tees and feeds both units. There can be any manner of blockage in the line leading to the aft unit. You can remove it from the Tee and put a garden hose down it to increase the pressure and clean it out. I usually limit the amount of water pressure so as not to cause damage. Although I have gone at it full blast on one occasion when I was truly annoyed with it with out incident. There didn't happen to be a blockage at that time. Don't ask.
On ours the rear unit does have less pressure on the discharge. First it is farther away from the pump and distance creates head which will cause the water to seek the course of least resistance - out the forward discharge. I do my own air conditioner winterizing and I can tell you that the through hull for the aft unit is smaller than the forward unit - more head pressure forcing more water out the path of least resistance. Next your comments on blockage are dead on although your don't ask comment has me visioning either a closed valve or water spraying everywhere ? so we might have to ask. But just in case check the through hull valve for the aft unit discharge to make sure it isn't partially closed. It is located in the starboard stern locker and if you've got stuff stored back there it is entirely possible the valve got partially closed
 
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