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Question:
Smoke problem

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-I have recently purchased an EPA certified wood stove. I am
unfortunately experiencing a smoke problem whenever I startup the wood stove. Can you explain why this is happening and what I should do to eliminate this problem.
Lucien C.



Answer 2:

Posted by
NB Lung Association

With a ‘clean’ fire and an EPA 1990 standard stove, very little or no smoke should be produced. Dark or smelly wood smoke is the result of incomplete combustion or an inefficient stove. Since you do have a new EPA stove - one of the cleanest (they cut emissions by up to 90%) and most energy efficient stove types on the market - I would contact the dealer who installed the stove. Insist that your installer be WETT- certified. The WETT (Wood Energy Technical Training) program is Canada’s only system for training and recognizing professional competence in the field of residential wood burning. Perhaps there is a problem with your original installation.

As with the answer to the previous question, if your problem is only when you start your fire, perhaps your flue isn’t warm enough or you are experiencing negative pressure. Trying warming up your flue first with a piece of kindling or a piece of paper before starting your fire.

If the problem is negative pressure, you may have an appliance in the house that is exhausting air to the outside - in competition to your wood stove. You may to try opening a window or installing an air intake outlet. Your WETT-certified installer should be able to advise you. Also, if your stove is located in a basement, you are more likely to experience back drafts.

Lastly, to prevent a smoky fire, you may want to review your burning practices. You should only be using seasoned firewood split to the right size for your stove. Always follow the manufacturer’s recommendations. Some general tips for cordwood stoves:

* Put lots of crumpled newspaper in the stove (not coloured or glossy paper).  Put in 10-15 pieces of finely split dry kindling  on  top of it and behind it. Completely   open the  air supply vent.

* Light the paper in several places near the air inlet. DO NOT leave the stove during this time - over-firing can cause dangerous levels of overheating.

* When the flames from the kindling begin to subside, add at least three small pieces of firewood. Take care not to smother the fire.

* Gradually increase the size of the wood
  as the coals build up.


Answer 1:
Posted by
Elements
-Elements does not have this technical background, so we suggest you contact the NB Lung Association nblung@nbnet.nb.ca as they have expertise in this area.

 

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