UL 2112:2009

$56.55

Subject for Venting Systems for Use with Gas-Fired Vent Appliances

Published By	Publication Date	Number of Pages
UL	2009-06-03	34

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Category: UL

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Description

1 Scope

1.1 These requirements cover venting systems intended for venting direct vented gas-fired appliances that comply with ANSI Z21 series Standards. Venting systems covered by these requirements are intended to be used with direct vented gas-fired appliances that have been installed in accordance with the National Fuel Gas Code, NFPA 54 and with Codes such as the International Mechanical Code, International Residential Code, Uniform Mechanical Code, and local Codes.

1.2 The requirements covered by this Outline are intended to address the structural integrity supporting means, rain effects, and corrosion effects of the venting system. For wind effects, leakage, and clearance to combustible construction the appliance standard requirements shall be applied.

1.3 These requirements do not cover venting systems intended for use with Category II, III or IV appliances.

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