Sizing Guide - Suppliers of GRDs, Flexible Ducting ...

Sizing Guide

Type B Gas Vent

for Category 1 Appliances

All Fuel Chimney

for Oil-Fired Appliances & Open-Face Fireplaces

Hart & Cooley

5030 Corporate Exchange Blvd. SE Grand Rapids, MI 49512 P (800) 433-6341 F (800) 223-8461

Table of Contents

Type B Gas Vent Systems

Introduction

Foreward

4

General Rules

6

Definitions

9

Single-Appliance Vents

Procedure

11

Sizing Tables

12

Multiple-Appliance Vents

Procedure

15

Sizing Tables

16

Additional Guidelines

19

Multiple-Story Venting

Sizing Guidelines

21

System Examples

22

Factory-Built All-Fuel Chimney Systems (includes flexible stainless liner sizing)

Description

26

Sizing Tables

27

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Foreword

This guide is a compilation of the system design and application procedures for all Hart & Cooley Gas Venting and Chimney products. The first section is specifically devoted to the design of Double-Wall TypeB Gas Vent Systems for use with equipment certified by the American Gas Association or Canadian Gas Association.

This guide has been prepared for the convenience and assistance of contractors, building inspectors, engineering firms and architects, as well as for training purposes.

The basis for this guide is the standard engineering application of the scientific laws for the behavior of fluid flow and heat transfer. In addition, these methods have been proved valid through many decades of field and laboratory experience by engineers, utilities and code authorities.

Additional references for the development of the material in this guide:

National Fuel Gas Code, NFPA Standard 54 ANSI Z223.1

Standard for the Installation of Oil-Burning Equipment 2006 Edition, NFPA31

American Society of Heating, Refrigerating and Air Conditioning Handbook, Equipment

International Mechanical Code

The capacities given in the Tables for Type B Gas Venting are consistent with those found in publications by the appliance manufacturers and NFPA 54 National Fuel Gas Code.

The capacities given in Section 2 tables for all-fuel chimney are consistent with those found in NFPA31, Standard for Oil-Burning Equipment.

For information on products for use with the systems in this guide, refer to specific product literature.

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NOTE THIS GUIDE SHOULD BE USED IN ADDITION TO, NOT AS REPLACEMENT FOR, HART & COOLEY INSTALLATION INSTRUCTIONS.

CAUTION ALWAYS READ AND COMPLY WITH THE MANUFACTURER'S INSTALLATION INSTRUCTIONS SUPPLIED WITH THE APPLIANCE.

Type B Gas Vent Systems

Single-Appliance Vents Multiple-Appliance Vents

Multiple-Story Venting

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