Gas Engineering Guide

Venting – Type “B” Vents and Vent Connectors

All type “B” vents used to exhaust products of combustion to the atmosphere shall be of a corrosion resistant type and so protected that sufficient temperature differential is maintained to create an adequate draft at all times.

Type “B” vents are to be installed with clearances not less than marked on each vent pipe section and in accordance with the listings of Underwriter Laboratories.

Venting Guide.pdf

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