Can someone look at this about the elbow? Is this document saying you can't use in a insert install or just chimney?
Simpson Duraliner document; re 45 degree elbow
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This must be the document. And yes, that would mean that 45 degree elbows are out as far as pretty much any installation goes. Weird but I wish they stated the problem. Not just that it isn't specifically allowed under NFPA 211.
Glad I used a 30 degree for mine. Wonder what applies if an adjustable is used?
(broken link removed to http://www.duravent.com/docs/bulletins/2008/45_elbows_product_bulletin.pdf)
Edit: OK I see the problem. UL 103 excludes anything over 30 degrees.
Glad I used a 30 degree for mine. Wonder what applies if an adjustable is used?
(broken link removed to http://www.duravent.com/docs/bulletins/2008/45_elbows_product_bulletin.pdf)
Edit: OK I see the problem. UL 103 excludes anything over 30 degrees.
Just to confirm, this doesn't apply to the interior double or single wall connection of a freestanding stove to the factory built chimney, just the class A portion, correct? If so, why is it different for a liner? Is it because the freestanding stove connection is considered accessible and serviceable and the liner connection is not?
"Factory-Built Chimneys for Residential Type and Building Heating Appliances
UL 103
1 Scope
1.1 These requirements cover factory-built chimneys intended for venting gas, liquid, and solid-fuel fired residential-type appliances and building heating appliances in which the maximum continuous flue-gas outlet temperatures do not exceed 1000°F (538°C). Factory-built chimneys are intended for installation in accordance with the Standard for Chimneys, Fireplaces, Vents, and Solid-Fuel Burning Appliances, NFPA 211, and in accordance with codes such as the International Mechanical Code, the International Residential Code, and the Uniform Mechanical Code. They are intended for installation inside or outside of buildings or both, in a manner that provides a vertical (30 degree maximum offset) conduit or passageway to transport flue gases to the outside.
1.1 revised June 30, 2006
1.2 The chimneys covered by these requirements comply with either a limited duration 1700°F (927°C) flue-gas temperature test or a limited duration 2100°F (1149°C) flue-gas temperature test, at the manufacturer's option.
1.2 revised June 30, 2006
1.3 These requirements cover dual purpose residential type and building heating appliance type chimneys, and single purpose building heating appliance type chimneys. Dual purpose residential type and building heating appliance type chimneys are tested enclosed and intended to be installed unenclosed or enclosed with combustible construction. Single purpose building heating appliance type chimneys are tested unenclosed and intended to be installed unenclosed or enclosed in a noncombustible chase."
"Factory-Built Chimneys for Residential Type and Building Heating Appliances
UL 103
1 Scope
1.1 These requirements cover factory-built chimneys intended for venting gas, liquid, and solid-fuel fired residential-type appliances and building heating appliances in which the maximum continuous flue-gas outlet temperatures do not exceed 1000°F (538°C). Factory-built chimneys are intended for installation in accordance with the Standard for Chimneys, Fireplaces, Vents, and Solid-Fuel Burning Appliances, NFPA 211, and in accordance with codes such as the International Mechanical Code, the International Residential Code, and the Uniform Mechanical Code. They are intended for installation inside or outside of buildings or both, in a manner that provides a vertical (30 degree maximum offset) conduit or passageway to transport flue gases to the outside.
1.1 revised June 30, 2006
1.2 The chimneys covered by these requirements comply with either a limited duration 1700°F (927°C) flue-gas temperature test or a limited duration 2100°F (1149°C) flue-gas temperature test, at the manufacturer's option.
1.2 revised June 30, 2006
1.3 These requirements cover dual purpose residential type and building heating appliance type chimneys, and single purpose building heating appliance type chimneys. Dual purpose residential type and building heating appliance type chimneys are tested enclosed and intended to be installed unenclosed or enclosed with combustible construction. Single purpose building heating appliance type chimneys are tested unenclosed and intended to be installed unenclosed or enclosed in a noncombustible chase."
Yeah it seems to only apply to the UL103HT part of the chimney which would be the "Class A" part. Simpson does not even make a class A 45 elbow so that makes even less sense. We use double wall 45 elbows all the time and in fact they (simpson) don't even make a 30 deg double wall elbow.
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