This is all *very* dependent on the individual boat and exactly how the hoses are run and how far underwater the intake is. I tried to T my head intake to the head sink drain and it was a fail. The thru-hull wasn’t deep enough and head just ended up sucking air. My wash-down pump T’s off the engine intake and this has never caused an issue. Factors in my favor is the engine intake is deeper, the pump is up high – way higher than the engine, and it has check valves that should prevent air going the other direction. One challenge with AC pumps is usually they can’t suck water any distance and need to be down below the water line to work. I would put a high loop someplace on the output side of the AC pump to make it harder for air to make it back down the line. I saw one boat at our marina that avoided all these issues by running the dock hose through the AC instead of using a pump.
Joe Coquina From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Charlie Nelson via CnC-List Sent: Thursday, September 19, 2019 10:21 AM To: cnc-list@cnc-list.com Cc: cenel...@aol.com Subject: [EXTERNAL] Re: Stus-List Air Conditioning Installation Questions -- Raw Water Supply My ac has been T’d off the engine cooling thru-hull for 24+ years without issues—save for a small sea snake who managed to get into the ac cooling tube but not thru the strainer in the tube! In addition to a small strainer in the ac line (after the T of course), I have a valve to shut off cooling water to the ac when motoring. Only thing I might do differently is to T off the engine cooling line after the Groco water strainer which may have prevented the snake clogging the flow—and save a few pieces of my heart muscle! OTOH, this approach may lead to other problems and since my setup has done well for so long I have no desire to mess with it! BTW, if I forget to close the valve in the ac line while motoring, I have never seen my Beta 28 overheat as a result—although I try to close it ‘religiously’ when motoring. Charlie Nelson Water Phantom 1995 C&C 36XL/kcb Sent from AOL Mobile Mail Get the new AOL app: mail.mobile.aol.com<http://mail.mobile.aol.com> On Thursday, September 19, 2019, Edd Schillay via CnC-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> wrote: Listers, Yesterday, I met with an AC installer on the Enterprise to cool off the main and aft cabin, as well as fight off mold and mildew (as I understand it, the expectation of growth of mold and mildew in this area is far more reliable than, say, David Risch actually attending a C&C Rendezvous). The plan is to sacrifice some of the aft-cabin hanging locker. Until I haul the boat again, which I don’t plan to do for another four years or so, I don’t have a dedicated through-hull. I’ve heard it’s not a good idea to tee off of the engine intake, but there is the galley sink drain nearby. Any issues with tee-ing off of that one? Obviously, I’d need to refrain from dumping chemicals into the sink while the AC is running so as those chemicals don’t go through the AC. Anyone know of any issues with that plan? Also, I’m a little perplexed as to why tee-ing off the engine intake is so bad. The AC is 110V AC-powered, so it’s not like I’m going to have the engine running and the AC going at the same time? Or can I with my 2000-Watt inverter and high-capacity alternator? All the best, Edd Edd M. Schillay Captain of the Starship Enterprise C&C 37+ | Sail No: NCC-1701-B Venice Yacht Club | Venice, FL Starship Enterprise's Captain's Log<https://protect2.fireeye.com/url?k=389145b0-64071415-38916cc7-0cc47adc5e34-aabf3e226acb3984&q=1&u=http%3A%2F%2Fenterpriseb.blogspot.com%2F> _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
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