Edd,, It is simple. Unless you install a cut off valve in the teed line off the raw water entail, the engine's raw water pump will suck the water out of the HVAC water line. When that happens you will have air in the intake line and your engine will over heat, etc. all sorts of bad things will then happen. Air is easier to for the pump to suck than water.
Been there & done that, so we built a manifold system to prove water from 1 intake for the both the engine and HVAC water pump. However, I have to close the valve for the HVAC side when running the engine and visa versa. It works, but is sometime a PITA Good luck Best regards, Jack Fitzgerald Fitzgerald Forwarding Co. Inc. FMC license no:1966F S/V HONEY - US12788 C&C 39TM (1974) Savannah, GA This email is protected by the Electronic Communications Privacy Act, 18 U.S.C. Sec. 2510-2521, is confidential and may be legally privileged. If you are not the intended recipient, you are hereby notified that any retention, dissemination, distribution or copying of this communication is strictly prohibited. Please reply to the sender that you have received this message in error, then delete it. Thank you On Thu, Sep 19, 2019 at 9:58 AM Edd Schillay via CnC-List < 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 <http://enterpriseb.blogspot.com/> > > > > > > > > > > > _______________________________________________ > > 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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