Venting
Gas Venting
The venting system must be installed in accor- dance with:
-NFPA54 National Fuel Gas Code, ANSI Z223.1.
-NFPA 211 Standard for Chimneys, Vent and Solid Fuel Burning Appliances.
For installations in Canada the venting system must be installed in accordance with:
-CGA / B149 Installation Code for Gas Burning Equipment.
-Prior to installing the appliance into an existing chimney or venting system, the vent system should be inspected for condition and obstructions.
WARNING
If the inspection reveals the vent system is not safe for the intended use, it shall be repaired, rebuilt, lined, relined or replaced with a vent or chimney to con- form to NFPA 211, latest edition. Failure to conduct such an inspection and/or repair could result in severe personal injury, death or substantial property damage.
-No portion of the venting system shall extend into or pass through any circu- lating air duct or furnace plenum.
-The gas venting system shall be installed, supported and spaced in accordance with their listings and the manufacturer’s instructions.
Masonry and Metal Chimneys
-The NFPA code book severely limits the installation of the ELITE into a masonry chimney. For applications using either interior or exterior masonry chimney a listed, approved metal chimney lining system should be used.
BEST PRACTICE
For any applications using an exterior chimney it is recommended that an insu- lated or stainless steel chimney lining system be used.
NOTICE
A chimney with one or more sides exposed to the outside of the structure is considered to be an exterior chimney.
-The chimney shall extend at least 5 feet above the highest connected appliance flue collar.
-The chimney shall extend at least 3 feet above the highest point where it passes through a roof of a building and at least 2 feet higher than any portion of a building within a horizontal distance of 10 feet.
Type B Vent Systems
-The vent system should terminate in accordance with NFPA 54, latest edi- tion, provided the termination is at least 8 feet from a vertical wall or similar obstruction.
BEST PRACTICE
The Type B vent system shall extend in a general vertical direction with offsets not exceeding 45 degrees. A vent system having not more than one 60 degree off- set shall be permitted. Any angle greater than 45 degrees is considered horizontal.
BEST PRACTICE
The total horizontal distance of a vent plus the horizontal vent connector shall not be greater than 75% of the vertical height of the vent.
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