Flue Size Kitchen Chimney Size Chart

The rule of thumb is a 1 10 ratio meaning that the fireplace opening can be 10 times as large as the flue tile cross section.

Flue size kitchen chimney size chart.

Then you can search for a chimney cap designed to fit an oval opening of those dimensions. Quality chimney liner material that meets astm and excels in freeze thaw environments. Chimney height also plays a role and taller chimneys generally draft better than shorter ones. Once you have that number you can search for a slip in chimney cap of the same size.

10 3 32 chimney sizes for neutral draft equipment. Fireplace flue size specifications relation of fireplace size to flue opening dimensions table of required chimney flue size and flue dimensions for masonry fireplaces. Venting a wood stove. Required chimney area can be calculated as.

32 to 36 wide 25 to 29 high it is important for the size of the chimney to be correctly calculated to match the fireplace opening. Single flue chimneys with oval flues. The venting capacity of a rectangular or square masonry flue if translated directly into actual or measured square inches of cross section is less than a round chimney flue of the same square inches of venting capacity. The velocity of air and flue gas in a smaller furnace should not exceed 2 m s.

To provide adequate draft and safe venting of combustion products the chimney flue for a fireplace has to be adequate in size or cross sectional area. For example you could vent a 6 inch stove into an insulated chimney that is 8 inches in diameter. Figuring out the proper size for your chimney flue can seem like a challenge. Design velocities of larger furnaces should not exceed 10 m s.

The ideal flue size is typically determined by the exhaust outlet of the stove or appliance. You need to measure the outside length and width of your flue in order to cap an oval chimney termination. Solving your chimney s math. 31 chimney sizes for appliances needing draft.

A 6 inch stove requires a 6 inch flue. With that in mind the height of the chimney should be at least 15 feet from the floor of the fireplace to the top of the flue. For example an 8 x 8 square nominal clay chimney flue tile liner has inside dimensions of 6 3 4 x 6 3 4. In most cases a step up is also fine.

A q v 3 where. Net flue gas temperature rise above ambient and flue gas composition co2. This article series provides information about masonry fireplaces. The most popular range of sizes.

An appliance operating at a steady state efficiency over 83 percent may be. A cross sectional area of chimney m 2 q volume of flue gases at chimney temperature m 3 s v velocity m s.