Question about Corona 23-DK Compact Heater

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I used red kerosine and now it only burns about 5 min. before quitting.

How do I "dry burn" the wick?

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Re: I used red kerosine and now it only burns about 5...

Make sure the unit is almost out of fuel. Take it outside where the wind won't blow on it. Start up the heater, and set it on 'high'. Now you just wait until it runs out of fuel and the flame burns out. The wick is made of fiberglass and won't burn. Only the tar the kerosene leaves behind will be consumed when it runs out of fuel. After this first burn off, wait 15 minutes and try to relight the burner to get any last fuel that was in the lower part of the wick. Note: the heater should still be out of fuel. Let it burn until it goes out again. Now check out the wick. It should be nice and clean. If not, what is left on it should brush of or be able to be crushed by your fingers. Refuel and try out the unit. It should work as normal now. This procedure produces fumes when the tar burns off, so make sure you do it outside!

Posted on Mar 03, 2008

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Knob up at max , but flame is 1/2" below the top plate of burner. Is a near new unit with only k1 kerosene . How can I get the flame up ?

Have you trimmed your wick lately? When the wick burns it becomes black, carbonised and no longer absorbs the kerosine like it should. You should have a wick trimmer which is like a can lid with a circular groove and two cut outs in the groove to shave the wick of its black carbon.

Jan 24, 2016 | Heaters


Wick won't light

I didn't realize how quickly condensation can enter the tank. Condensation will ruin the wick permanently, even a brand new wick.
To avoid condensation, do NOT empty the tank unless you are replacing the wick, or some other repair requires it. Likewise, do NOT burn the kerosene out, for the same reason: condensation.
When the tank is filled enough, condensation can still enter but the wick will be able to burn and you won't know the difference. But as soon as the kerosene is gone, all the wick has is water. 
STORAGE:  When you burn out the kerosene to store it, condensation can enter and you will not be able to use the wick again. So unless it's necessary, don't burn out the kerosene.
If you have to store the heater in a place that requires the tank to be empty, dissassemble the heater before you use it again and make sure the tank is completely dry and contains no water BEFORE you use it again.
I think but I'm not sure, that the tank must have been designed to let some condensation fall to the sides, or somehow get out of the way. But I'm certain this doesn't last because condensatiion is inevitable and it will accumulate. 

on Nov 10, 2008 | Corona 23-DK Compact Heater

1 Answer

How do you dry burn dyna glo rmc 95-c6

A "dry burn" is when the heater runs out of fuel and the tar buildup on the wick is burned away. This operation should be done outside in a covered location. It should only be necessary every seven days of 24/7 operation.

Dec 16, 2014 | Heaters

1 Answer

Flame too low and putting off soot

Raize the wick up and trin off the burned section off Or replacethe wick.first take some of the kerosine place a clear glass ,should be as clear as water if not replace the fuel. Use only K-1.

Jan 22, 2011 | Corona 23-DK Compact Heater

1 Answer

Is it true that if you use moth balls with the fuel in my kerosene heater it burns cleaner & there wont be any build up on the wick? I get alot of soot build up on the wick of my kerosene heater &...

I can't answer about moth balls cleaning the wick but off the top of my head I would not try it as I do not know just what gases your unit would give off. I use kerosene heaters and find that after about 5 tanks of fuel I put on a pair of household rubber gloves, remove the chimney and turn the wick all the way up. Then I roll the wick between my fingers and get the hard carbon off. Once I have the wick clean I use the shop vac to vacuum it all up. I have found that by doing this my wick is never dirty, I do not get any smoke and the wicks last more than 20 years. Probably a better idea than moth balls. Let me know how you make out.


Feb 09, 2010 | Reddy Heater-170,000 BTU Kerosene Deluxe

1 Answer


Generally a kerosene heater will put out a strong smell for a few minutes after it is first lit, and for a few minutes after you put it out. Generally, it will be much stronger after it's extinguished. I usually extinguish mine and immediately set it out on the concrete porch to keep the smell out of the house.

Opening a window for a few minutes right after lighting the heater will help with the fumes at startup.

If your heater is constantly putting off fumes, even after burning for a little while, then it may be time to burn the wick dry. This should be done every few months anyway as general maintenance.

First, siphon all the fuel from the tank. You will need to disassemble the heater and gain access to the top of the wick. Raise the wick to it's highest point and use your fingers or a flat nosed pair of pliers to break up the hard black tar coating on the top of the wick. The smaller you can break the coating, the faster it will burn off. Once thats done, reassemble your heater, raise the wick to it's highest point and light it. It will probably burn for an hour or two because it will first burn all of the fuel soaked up in your wick, but then it will burn off the tar. Finally, it will go out.

After this, you should be ok, to refill your heater and relight as normal.

If you find when you disassemble it that the wick has a hard tar ring down inside, you may have a hard time breaking that up and cleaning it. It is possible... But I would probably just replace the wick.

Nov 21, 2008 | Corona 23-DK Compact Heater

1 Answer

Kerosene heater will not wick up fuel from tank properly

Have you checked the length of wick. May not be long enough to get down into fuel. RON

Jan 26, 2008 | Northern Tool 10,600 BTU Radiant Kerosene...

4 Answers

Why am I replacing wicks every 3 weeks

could be you got the flame a little too high so its burning off the top of the wick.

Dec 27, 2007 | Corona 23-DK Compact Heater

3 Answers

Electric starter

I have a different make and model, but many of these use a similar design. A battery pack (2 x D or C cell) is mounted on the kerosine tank. The batteries are used to heat a coil. The coil is pressed by an external button against the heater wick. Pressing the button also engages the switch, heating the coil until it glows red hot.

1. Open the burner chamber of the unit and confirm it has a wick installed (this is a used heater--who knows it's condition). Close the chamber.
2. Make sure the tip-over protection hasn't retracted the wick. Generally the tip-over protection is reset by a lever on the base of the burner.
3. Adjust the wick all the way up. A knob on the base of the burner does this.
4. Fully depress the electric starter until the coil touches the wick.
5. When the kerosine on the wick ignites, release the starter and adjust the wick to the desired level.

If the electric start coil does not glow, check the batteries. If the batteries are good, the starter coil may be bad. These are also

Nov 08, 2007 | Corona 23-DK Compact Heater

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