Gas Vents

Vents

Section 2426 and 2427

Vents/Chimneys  General

G2426.1

General

 

G2426.2

Connectors required

 

G2426.3

Insulation shield

 

G2426.5

Installation

 

G2426.6

Supports

 

G2426.7

Protection against damage

 

G2427.5.3

Chimney termination

 

G2427.5.4

Size of chimney

 

G2427.4

Type of vent used

 

G2427.4.1

Plastic piping

 

 

 

G2427.5.1

Factory built chimneys

 

G2427.5.2

Masonry chimneys

 

G2427.5.6

Chimneys service other appliances

 

G2427.5.8

Clean outs

 

G2427.5.10

Insulation shield

 

 

Gas Vents

Code Reference

Item or Area

 

G2427

General

G2427.3.1

Appliance draft requirements

G2427.3.3

Mechanical draft systems

G2427.6.4

Vent termination requirements

G2427.6.5

Minimum height Requirements

G2427.6.6

Roof Termination

G2427.6.8

Outside wall penetrations

G2427.3.4

Prohibited to pass through ductwork

G2427.3.5

Above ceiling spaces

Installation of exterior vents beside vertical walls

G2427.6.4.1

Decorative shrouds

 

G2427.6.5

Minimum Height

 

G2427.6.6

Roof terminations

 

G2427.6.7

Forced air inlets

 

G2427.6.8

Exterior wall penetrations

 

G2427.6.9

Size of gas vents

 

Section Overviews

G2427                  Venting of appliances

G2427.10            Vent connectors for category 1 appliances

G2427.11            Vent connectors for Category II, III and IV appliances

G2427.3               Design and construction

G2427.4               Type of venting system to be used

G2427.5               Masonry, metal and factory built chimneys

G2427.6               Gas Vents

G2427.7               Single walled metal pipe

G2427.8               Venting system termination location

G2427.9               Condensation drainage

G2427.12             Draft hoods and draft controls

G2427.13             Manually operated dampers

G2427.14             Automatically operated dampers

G2427.15            Obstructions

Roof Slope Table for vents

ROOF SLOPE

H (minimum) ft

ROOF SLOPE

H (minimum) ft

Flat to 6/12

1

   Over 12/12 to 14/12

5

Over 6/12 to 7/12

1.25

Over 14/12 to 16/12

6

Over 7/12 to 8/12

1.5

Over 16/12 to 18/12

7

Over 8/12 to 9/12

2

Over 18/12 to 20/12

7.5

Over 9/12 to 10/12

2.5

Over 20/12 to 21/12

8

Over 10/12 to 11/12

3.25

Over 11/12 to 12/12

4

Section 2428 covers category 1 vent sizing and installation. This chapter includes tables/charts for installation.