Outdoor Boiler Stack Height Above Roof

The top of the chimney should be at least 3 ft 0 92 m above the roof surface.

Outdoor boiler stack height above roof.

If the previous calculation results in the required height of 64 inches we can see that the top of the pipe will not rise above the roof peak but would still meet the requirements of the rule. Place the stack as far from the intake as possible 50 ft is recommended. All parties involved should become very aware of the liabilities and consequences of such regulation. This started out as a question but found my own answer.

All new owbs must be equipped with a permanent stack extending a minimum of 18 feet above ground level. Requiring a stack height of x feet above any structure within a 50 to 200 radius creates a very real liability issue. Minimum stack height requirements for outdoor wood burners owb s. Place the stack at least 10 ft high on most roofs to avoid recirculation.

Owb s should be utilized only in rural settings. For the next example you have a shorter chimney height. For gas vents or a type l vent this distance above the roof surface must be at least 2 ft 0 61m. It s 6 inches in many states but especially in northern states like minnesota it s 12 inches.

For 18 feet of run you would have a rise of 72 inches. Provide a stack velocity of a minimum of 1 4 times the wind velocity. This specification makes sure steep roof slopes are cleared. If a new owb is subject to a valid nuisance complaint the dec may require that the permanent stack extend up to two feet above the peak of any roof structure within 150 feet of the owb click here for more info.

Provide ample stack height a minimum of 10 ft above adjacent rooflines or air intakes.