Multiple Venting

Multiple Venting

A special note of caution on using a chimney: only one appliance or heater should be vented into a single flue. If a solid fuel-burning appliance is connected to a flue already used by another appliance, such as a water heater, serious problems may arise. Some of these are:
  • Increased creosote accumulation. The size of the flue’s interior can be significantly decreased by heavy creosote deposits from a woodburner. This reduction in the flue size may not allow flue gases to vent properly and could create a fire and/or health hazard.
  • The possible deterioration of the flue.
  • The blocking of a lower heater vent by creosote.
  • The flue may not be large enough to handle an extra heater and allow carbon monoxide (a dangerous gas) to drift back into your home.
General Safety

Woodburners and other solid fuel burning appliances must be used carefully. Some basic precautions you should follow when using your unit include:
  • Read the instruction manual that came with your appliance. If you do not have one, ask a dealer who sells your type of unit for another copy or contact the manufacturer.
  • Never use any type of flammable or combustible liquid to start a fire! This includes gasoline, kerosene, lighter fluid and other flammable liquids.
  • Never burn plastics, garbage or wood that has been treated with a preservative, paint, or other chemicals. These materials can cause corrosion in the heater, the vent and in chimneys, or produce dangerous toxic gases that could be harmful to you and your family. It is best to avoid smoky fires and use only well seasoned wood.
  • Children should be taught not to touch or play around the stove.
  • Burn only the wood or solid fuel recommended by the manufacturer and according to their specifications.
  • When cleaning ashes out of the unit, put them in a metal container that has a metal lid. Place the container on a concrete floor or other non-combustible surface, away from other combustible materials outside your home. Do not place the ashes in a paper sack or cardboard box; there may still be a hot ember that could ignite the container. Embers may stay hot for several days.


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- Your Guide to Woodburners
- Home Safety Tips

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