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Title: New Vent Sizing Tables- A Result Of Gri-Sponsored Research
Author: R. A. Borgeson, D. D. Paul, L. R. Brand
Source: American Gas Association 1991
Year Published: 1991
Abstract: The appropriate American National Standards Institute groups are currently considering substantially updating the venting guideUnes in the National Fuel Gas Code including new vent sizing tables for Appendix G. These new standards are expected to include improved methods of categorization which will ensure that the vent design is consistent with the appliance operating characteristics. The technical background for these changes was developed by the Gas Research Institutes Venting/ Flue Gas Management Project. This paper will begin by providing an overview and status report of the entire Venting/Flue Gas Management Project. Then, it will illustrate the practical effects in the field that are expected to result from these revisions. First, the expected changes to apphance design will be discussed. Then, a comparison of the new and revised venting guidelines will be used to show how vent sizing and material selection will be modified. Throughout, the rationale motivating these changes will be explained.

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