Maximum overall length of straight pipe: 3 m 10 ft. The assembly should be as short and direct as possible between the stove and chimney. The use of two 45 degree elbows is often preferable to a single 90 degree elbow because less turbulence is created in the exhaust flow and they result in less horizontal run. Maximum number of degree elbows: 2.
Maximum unsupported horizontal length: 1 m 3 feet. Galvanized flue pipes must not be used because the coatings vaporize at high temperatures and release dangerous gases. Use black painted flue pipes. Each joint in the assembly must be fastened with at least three screws. The assembly must have allowance for expansion: elbows in assemblies allow for expansion; straight assemblies should include an inspection wrap with one end unfastened, or a telescopic section.
One end of the assembly must be securely fastened to the flue collar with 3 sheet metal screws and the other end securely fastened to the chimney. There must be provision for cleaning of the pipes, either through a clean out or by removal of the pipe assembly.
Removal of the assembly should not require that the stove be moved. The crimped ends male of the sections must be oriented towards the appliance so that falling dust and condensation stay inside the pipe. A flue pipe must never pass through a combustible floor or ceiling or through an attic, roof space, closet or concealed space.
This is a double wall stovepipe with a stainless steel inner wall and a black painted outer wall. Do not confuse this double-wall interior piping with the Class A Chimney described in the beginning of this document—this stuff is for interior use only!
Ask your Hearth Dealer for more information about this type of Stove pipe. My first experience with lack of proper floor protection came when I was homesteading in West Virginia.
Our house had no central heating, but there was a fireplace ready to serve our heating needs. That night, we lit a roaring fire and settled in for a peaceful winter eve. Suddenly, we smelled something burning! After a frantic search we discovered that the floor underneath the fireplace hearth was smoldering. Different stoves have different requirements, but all woodstoves need to have a non-combustible base underneath. This base should extend a minimum of 8 inches around all sides of the stove and 18 inches in front of any loading doors.
In addition, the stove board should extend underneath and horizontal run of the stovepipe connection to the chimney. All stoves must be installed a safe distance from combustible walls. This distance can be reduced by one or both of the following methods:. Check your owners manual or local building codes to determine the size of the wall protection needed. Check with your Hearth Retailer to see if a rear heat shield is available for the stove of your choice.
You cannot use a Stovepipe through a window! Additional information on these subjects can be found on many areas of Hearth. Log in. Recent Activity. Wiki Pages Latest activity. Media New media New comments Search media. Search Everywhere This blog. Search titles only. Search Advanced search…. Everywhere This blog. Search Advanced….
Install the app. Active since , Hearth. We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues. JavaScript is disabled. The pressure of the draft will be moving too fast for smoke to work through the seam. The greater concern is creosote leakage through the wood stove pipe connection points.
Creosote can often be in liquid form when the stove pipe is cooling and the fire is dying down. The lower temperature condensation will drip creosote down the pipe. If the male end is incorrectly pointing upwards, liquid formed by condensation will always travel down the path of least resistance, and will eventually drip outside of the pipe just like in this picture. By having the male end pointing down, any drips will fall into the female end of the pipe below and back into the stove to be burned.
Now, you may look at your stove pipe setup and say, "The male ends of my pipes are pointing up and I don't have any problems and it's been working like that for years".
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