Water heat engine heat exchanger lines connect?
- Thread starter Woodworks1
- Start date
jssailem
SBO Weather and Forecasting Forum Jim & John
- Oct 22, 2014
- 23,842
Nice. Kumma was not known to have much insulation around their tanks. I’d replace the element and be sure the proper fittings are screwed into the inlets. Some folks used the wrong thread. They then leak. Might want to pressure test the tank and the water coil.
Thank, It hasn’t been used much. Serviced it. Guy wanted $200 for both but we traded him for this drawing I did of a Buzzards Bay 25 by N.G. Herreshoff instead.
If you are requesting water heater recommendations, the choices will be limited by the space available and your budget. At the high end are Raritan heaters. A 6-gallon model will set you back around $1K.
There is nothing wrong with a Kuma heater. In fact it is the only company that has made the effort to have their water heaters UL listed. As your photo shows, the tank is pretty well insulated. A Kuma much more affordable than a Raritan. Check FisheriesSupply.com and Defender.com for prices.
We are replacing a Whale with a Kuma 6 gal water heater.
If it broke but worked well enough before replace with something similar.
If it broke but worked well enough before replace with something similar.
I was a HERS Rater. One of the things we did was to do a savings to investment ratios (SIR) for homeowners that were adding upgrades, energy efficient items to their homes.
So since I’m not paying for electricity, even if I put a dollar into insulation it would never pay for itself.
So since I’m not paying for electricity, even if I put a dollar into insulation it would never pay for itself.
jssailem
SBO Weather and Forecasting Forum Jim & John
- Oct 22, 2014
- 23,842
That would be true and supportive of your desire as long as you are plugged into the marina power source.
Would the insulation start to pay you back once you unplug, leave the dock, while still having the desire for hot water on the boat?
I chose to buy a water heater with a reputation for a well-insulated tank. I can go for 1-2 days without having to heat the water in the tank. Maybe it is not a complete ROI.
From a practical standpoint, I have hot water on the boat even when not plugged into the marina.
I may use my boat differently than you do.
It cost 1 to 2 cents per gallon to heat the water. The lake I sail on is a hydroelectric dam so the transmission loss would be minimal. I could do a simple payback period on the heat loss on a R-value of 3.5 vs 7 on a $1,000 water heater vs the one I gave a drawing for.
Having hot water longer does have a value.
I mean no offense.
But I would rather go sailing.
It cost 1 to 2 cents per gallon to heat the water. The lake I sail on is a hydroelectric dam so the transmission loss would be minimal. I could do a simple payback period on the heat loss on a R-value of 3.5 vs 7 on a $1,000 water heater vs the one I gave a drawing for.
Having hot water longer does have a value.
I mean no offense.
But I would rather go sailing.
The cost of heating the water never really factors into the equation. In almost all cases that’s negligible, and cheaper to use shore power than an engine anyway. The reason people want better insulated water heaters is to keep the water hot longer. That way you can heat the water up one day (either at shore or with the engine), then still have the hot water to use the next morning after you’ve anchored out. If that’s not how you use your boat then that won’t matter to you, and you’re better off not worrying about it. Personally I need a hot shower in the morning, even when anchored out, but Plenty of people do without any hot water at all on smaller boats. Your boat, your choice, as they say.
I believe the thread I started has lost its original intent.
Water heat engine heat exchanger lines connect?
Water heat engine heat exchanger lines connect?
Look at Post #14. The water exits from the engine block, enters the HW tank and returns to the exhaust manifold. Use a good quality heater hose. Trident.