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Old 09-10-2019, 13:15   #121
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Re: Heating our sailboat this winter in VA - HELP!

Willem, why not just answer their questions here so we can all benefit from your experience?
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Old 09-10-2019, 13:17   #122
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Re: Heating our sailboat this winter in VA - HELP!

My thoughts exactly.
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Old 09-10-2019, 13:51   #123
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Re: Heating our sailboat this winter in VA - HELP!

Quote:
Originally Posted by SUNCAT365 View Post

The best buy I ever made was an electric mattress pad, rather than an electric blanket. Heat rises. With an electric blanket you still have a cold mattress over a cold hull. With an electric mattress pad below you and a good comforter above you, you are in a warm comfy womb.
Heat doesn't rise, it distributes itself in any direction until an equilibrium is reached. It is hot air or more accurately, less dense air that rises.
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Old 10-10-2019, 02:37   #124
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Re: Heating our sailboat this winter in VA - HELP!

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Originally Posted by DeepFrz View Post
Willem, why not just answer their questions here so we can all benefit from your experience?

Hello, Please accept my appologie. I am new here and with no forum expereience.
I would like to help and advise sailors, boaters, interested to install a diesel heater, to obtain a satisfactorily working heater.
Since I have been trying to improve through observation a Sigmar and a Refleks heater while living onboard, I found myself having developed a new diesel heater after 5 years.

If interested go to www.norskblueflamme.com


In order to have a correct and safe working heater the installation must comply to the following criteria:
  1. my opinion it is essential to have a closed system, take the combustion air from outside, next to the chimney that is approx.30 cm higher. This way the barometric pressure is about equal in both ducts eliminating backdraft.
    The location of the ducts on the deck is as important. I have seen installed heaters in convenient location but hell to operate and very very dangerous. Wind reflection is not to be underestimated.
  2. The fuel must not flow into the burner bottom but should evaporate as soon as it enters the burner.
  3. A balanced mixture of vaporized diesel and oxygen is essential. A good burner is a delicate piece of engineering. A full combustion means no soot, no to minimum cleaning, no soot on deck and last but not least, a minimum consumption.
  4. For me a safe installation includes two safety fuel shut-off valves. One in case the burner temperature is to low and one for an excessive-heat condition.
These are I believe the most essential notes I can make, Hopefully these notes will be helpfull to the ones struggling with heaters or want to install one.
It is difficult near impossible to give full advise this way, there every boat layout , expectations, and physical possibilities are different.
Anyone with specific questions, possibly including layout sketches or drawings, is welcome for advice.



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Old 11-10-2019, 05:54   #125
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Re: Heating our sailboat this winter in VA - HELP!

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The one I have fits on a 4" diameter stove pipe. I have an imperfect memory but think I bought it from Woodland Supply or something like that. Keep looking I'm sure no adapter was needed. I found the link.

https://www.woodlanddirect.com/Vacu-...el-Chimney-Cap

Sorry I could only find a blurry picture of the cap above deck.
CORRECTION: The one I have fits a 3" diameter pipe.
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Old 11-10-2019, 09:36   #126
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Re: Heating our sailboat this winter in VA - HELP!

Hi,
Thanks for the link.
Interesting design, should work.
Suggest to foresee a second one for the air intake, see that the exit and intake mouths are 30 to 40 cm appart in height.

Consider to position the two vertical flue pipes not further than 30cm apart in the horizontal plane and preferably at a 45 degre angle forward of the mast. Wind reflection !
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Old 11-10-2019, 14:35   #127
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Re: Heating our sailboat this winter in VA - HELP!

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Originally Posted by starminx View Post
Hi,
Thanks for the link.
Interesting design, should work.
Suggest to foresee a second one for the air intake, see that the exit and intake mouths are 30 to 40 cm appart in height.

Consider to position the two vertical flue pipes not further than 30cm apart in the horizontal plane and preferably at a 45 degre angle forward of the mast. Wind reflection !
I'm unsure if two Vacustacs would be more effective. I have not installed the sealed intake that I was planning since installing the Vacustac and have experienced no blowback or flame outs and explosive re-ignitions. My installation is about 1 meter aft of the mainmast and is vertical. I leave a dorade vent open when running the heater and plan to install the intake this year but I don't think I can have them as close together as 30 cm horizontally maybe 40 cm will work?

Take a look at the attached video which I stumbled upon when looking for a solution to the heater getting blown out in high (30-35 kn) winds coming in beam on. This is what sold me on trying out the Vacustac

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