Diesel Heater Carboning

[SV_WholeHeart]

I insatlled a Dickinson Newport heater on my boat this last fall but I'm having issues with carbon buildup in the bottom of the heater. I have to clean the heater once a week, of course now I've gotten pretty fast at doing it but it's a nasty job.

The heater draws fuel from my main tank after it is filtered though a Racor filter.

I'd like to know if anyone else has or has had this problem and how if at all you have solved the issue. I've talked to John at the Dickinson warehouse in Everett (he does rebuilds there) and have tried all his ideas but nothing seems to really help.

Thanks,
Suzy

S/V WholeHeart
E-34

[sailandoar]

What about trying a differnt fuel? Rig a temp/alternate tank and burn some different/cleaner/better composition fuel.

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www.blakes-lavac-taylors.co.uk/faqs.htm

Q: Black smoke emission, Inefficient burning and excessive carboning

A: Too much / too little fuel - In most cases the problem is caused by trying to run the heater too low. Either too much or too little fuel will result in black smoke and soothing up. Ideally there should be some blue colour in the flame. Controlling the drip rate accurately is crucial.

Flue not long enough - Poor draught will result and lead to heavy carboning, and soothing in the heater body and flue. The minimum flue length is around 89Omms (35 "). If it is not possible to increase the flue length inside the cabin, it can be added outside. If this is done, be sure to insulate the outside section (use heat resistant material) otherwise the temperature differential within the flue will tend to cause a down-draught.

[SV_WholeHeart]

Changing to a different type of fuel isn't as easy as adding a tank and just running it to the heater. Since I have a Dickinson heater the oil-metering unit would have to be changed for the different fuel, all had to do with viscosity.

I have 37 inches of flue inside the boat and added another 36 inches above deck to see if that made a difference. It didn't.

I don't have an issue with smoking, just the carboning in the bottom of the heater. The flame is above the burner ring and is the correct color nice lemon yellow with a touch of blue.

Thankis for you reply.

Simply,
Suzy

S/V WholeHeart
E-34
Seattle, WA

[seamountie]

If you are concidering adding a day tank, concider adding an anti-sooting agent to the mix. I had a similar problem with my Sigmar - it was running 24/7 over the winter, and I was, like you, having to clean the bottom "skunge" out every week. I threw an extra filter in the system and started to use "Red Devil" anti-sooting agent and I am down to cleaning it once a month.

Richard
S.V. Gandalf III