Chimney Liner Capacity Chart

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.

Chimney liner capacity chart.

601 760 sq. A cross sectional area of chimney m 2 q volume of flue gases at chimney temperature m 3 s v velocity m s in general 1 kw boiler heat requires 1100 mm 2 of chimney area. Flex king pro chimney liner 4x40 316ti 460 00. The liner size is the number one factor for the appliance to burn properly.

The chimney liner should never be undersized for any appliance especially to accommodate insulation around the liner. Use this tool to quickly calculate flue diameter or btu s for single or multiple category 1 appliance venting. Chimney vent capacity chart btu h and kw pdf. Stainless steel chimney liners while offering unrivaled customer service for the best buying experience.

Capacity listed in the sizing tables must be reduced by 5. For each additional elbow greater than 45 deg up to and including 90 deg the maximum capacity in the sizing tables must be reduced by 10. But chimney experts and draft measurements show that in a rectangular flue not all of the cross sectional area is equally effective in developing draft. Up to 600 sq.

Flex king 7 5x20 insert kit. The chart below uses a 10 1 ratio. 761 942 sq. Deluxe terra cotta top plate 12in x 13in x 13in 155 00.

Chimneys and vents on an outside wall must be. Doing the work as a d i y homeowner can save hundreds and possibly thousands of dollars. For single category 1 appliance. Aluminum flexible chimney liner and gas vent connector installation instructions vent connector capacities f or m u l tipl e categ ory 1 appl iances connected to a com m on vent rigid connector siz ing inf orm ation nat nat nat nat.

Chimney liner insulation kit 6in. Chimney vent capacity chart btu h and kw. Undersized liners will not allow the appliance to vent properly. For example an 8 x 8 square nominal clay chimney flue tile liner has inside dimensions of 6 3 4 x 6 3 4.

Just muliplying these dimensions together 6 75 x 6 75 45 56 sq in. The vent connector should be routed to the vent utilizing the shortest possible route. This can cause smoke to pour out of the stove and it can also cause gas and oil. Installing a stainless steel chimney liner down your chimney is the best and most economical way to revive a deteriorated chimney flue.

This is no job to cut corners though. Guide provided by rockford chimney.