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Go Back   SailNet Community > On Board > Gear & Maintenance > Hot Water Heater Usage
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Thread: Hot Water Heater Usage Reply to Thread
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Topic Review (Newest First)
01-21-2007 08:31 PM
camaraderie John...getting back to your actual thread...
One thing I wanted to mention if you DO decide to run heat exchanger lines from the engine back to the heater exchange...be sure to put stop **** valves in place on the ENGINE end of both out and return lines. That way...if you have a clamp fail or hose burst and lose your water/coolant, you can close the valves, re-fill and go start the engine.
I think I've said this before somewhere, but it bears repeating as so many installations I've seen just clamp the hoses on.
01-21-2007 08:22 PM
camaraderie BIG MISS is like Portugal in the World Cup! ....or maybe WMD's???
01-21-2007 07:28 PM
CapnHand
Quote:
Originally Posted by Giulietta
Then explain to me, how am I, as a foreigner going to understand NEAR MISS???!!???!?!?!
NEAR MISS is like France in the World Cup finals.
01-21-2007 05:51 PM
PBzeer Wait a minute now, I'm not dumping anything in my bilge.

I am my crew. So I only have to worry about what works for me. Not to mention what works for my wallet. And that's probably the main consideration at this point. After redoing all the wiring on the boat, complete with new distribution panels (which is what led to the question on water heaters), new A/P and davits, another 5 to 6 hundred seems like a lot. There is a Force 10 for around $200, but that would be iffy on space.

Mostly though, this thread was a way of thinking outloud. So far, I've replaced with new, rather than try to extend 20+ year old parts and I don't want to do anything half-a$$ed. It may only take me a day to do something, but I've generally thought about it for at least a week before deciding to do it. I not only want to put it in right, I want to be able to take it out easily if necessary. Something the PO's gave no thought to.

I appreciate all the responses. It's one thing to think about something, quite another to get "real life" input. What works in theory, doesn't always hold up so well in reality.
01-21-2007 04:55 PM
captlar Red - John is the stinky one. I have the IsoTemp. You do make a good point. I had to rip out a perfectly good setup, create new space in a new location for the IsoTemp and solve some related space problems. Those modifications drove up the price - the IsoTemp was around $800.

One last point on the instant heaters - When I was looking, most were usable only at one location so no HW at galley. If going with instant, read the specs carefully. NowI smell good and my galley is clean.

John - if it can't be repaired, replace what you have with a new, well insulated tank and make your crew happy.
01-21-2007 02:53 PM
Loewe Larry the heat exchanger HW heaters are pretty reliable. You already have the footprint and the plumbing. Tanks aren't that expensive. We are full time liveaboards and shower aboard anytime the crew don't care to walk up to the marina when we are in port..which is to say, frequently. Shore power heats fast enough to get everyone (2 adults, 2 kids) done in about 1 1/2 hrs from switch on to wiping down the head. Running the engine actual gets the water hotter and does well enough for the entire crew to shower at the end of the day. We use an Atlantic Marine 6 gal unit. Has a 5 year warranty and has worked fine. The boat originally discharged into the bilge with all the attendant problems mentioned. I tried unsuccesfully to use a Jabsco Par Max 3 Shower sump pump and after 3 replacements I went to a Whale Gulper model and problems ended. I use a Y valve that connects the shower sump to the "Drying bilge pump discharge line" works great. Might add that the crew is well trained in water conservation even though we have 150G. Also with a 4-107 we produce sufficient heat with the exchanger pretty quickly. Water temps are in the mid-upper 40's right now. Hope that helps.
Regards,
Red
01-21-2007 02:50 PM
Giulietta
Quote:
Originally Posted by CapnHand
Why would anyone need a hot water heater? Why would you want to heat water that's already hot?

What you may want is a COLD water heater; much more useful.
Then explain to me, how am I, as a foreigner going to understand NEAR MISS???!!???!?!?!
01-21-2007 02:28 PM
CapnHand Why would anyone need a hot water heater? Why would you want to heat water that's already hot?

What you may want is a COLD water heater; much more useful.
01-21-2007 09:38 AM
ianhlnd I know this is an old thread and you've been given practically every solution possible, but I didn't see anything mentioned about a defective or lack of a thermostat. Heat exchangers do sometimes fail, not regularly, but thermostats do. Was it taken out? You didn't mention the temperature your boat operates while under motor. That's the first thing I'd look at to see if there's a problem.

"I realize the instant one would only be good at the dock. What I'm wondering, is if I really need one at all."

Please, for the sake and sanity of crew, get one, any one
01-20-2007 11:09 AM
hellosailor Insurance companies tend to be a bit conservative, and lag behind the times. But, as my gas company kept telling me, gas explodes, it's really really dangerous. (They kept warning me about pilot lights I might have, for things like a gas refrigerator, too. Ah, not in this town, not for fifty years or more.)

There's such a thing as being too conservative, too. Unless your insurnace policy was cleverly enough written to ban flash heaters, that's the kind of question you might just not want to bring up next time around.
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