Chimney Liner Sizing Guide

Chimney draft chart pdf chimney area.

Chimney liner sizing guide.

Measure the exhaust collar of the appliance. Design velocities of larger furnaces should not exceed 10 m s. A q v 3 where. 16 liner the standard 10 1 ratio has been used in the chart above.

Measure the width and length of the chimney flue on top of your chimney to make sure the liner size required will fit down the flue. Model tlc hart cooley chimney sizes 5 through 14inches in diameter require 2 inches of airspace clearance to combustible construction. Rockford chimney supply s chimney liner size calculator amp. A cross sectional area of chimney m 2 q volume of flue gases at chimney.

The chimney liner should never be undersized for any appliance especially to accommodate insulation around the liner. Sizing handbook application guide chimney gas vent for capacities to 100 million b t u. Use this tool to quickly calculate flue diameter or btu s for single or multiple category 1 appliance venting. The velocity of air and flue gas in a smaller furnace should not exceed 2 m s.

Choose the type of appliance you have. In a few simple steps you ll be able to see your options for chimney liner size and type. Guide is a great way for anyone to choose the correct size liner and also the correct type of stainless steel. Stainless steel chimney liners while offering unrivaled customer service for the best buying experience.

It is intended for the convenience and assistance of. This can cause smoke to pour out of the stove and it can also cause gas and oil appliances to fail. The ideal flue size is typically determined by the exhaust outlet of the stove or appliance. A 10 1 ratio should be used for chimneys less than 25 feet in height and a 12 1 ratio for chimneys greater than 25 feet in height.

To be safe we recommend a 10 1 ratio for chimneys less than or equal to 25 feet in height and a 12 1 ratio for chimneys greater than 25 feet in height. The primary aim of this sizing handbook is to provide more detailed guidance on appliance venting than can be found in the codes or in appliance manufacturers instructions. For satisfactory performance of appliances in confined spaces and for the venting system an adequate supply of fresh air must be provided. Required chimney area can be calculated as.

For single category 1 appliance. Undersized liners will not allow the appliance to vent properly. Open fireplace liner sizing guide the chart below uses a 10 1 ratio.