10
VENTING INSTALLATION
Type
Installation of Listed
Installing Vent System In A Chase
VENTING INSTALLATION
Continued
Round Top 
Storm Collar 
Flashing 
Roof Support
25mm (1") Clearance to Combustible Material
Firestop
Spacer
Enclosure | Keep Electrical Wires and |
Wall | Building Insulation Away from |
| Gas Vent and Out of the |
Gas Vent | Required Air Space |
| |
Length |
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Support |
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Plate |
|
25mm (1") Clearance to
Adjustable 
Combustibles Length 
Figure 21 - Typical
INSTALLATION OF LISTED B-1 VENT
WARNING: Installation should only be made by qualified persons who are familiar with the safety procedures required for the installation of the prod- uct, who are equipped with the proper tools and testing instruments, and who have achieved proper certification of licensing. Installations made by un- qualified persons can result in the risk of injury or electrical shock which can be serious or even fatal.
Figures 22 through 24 show other options for the gas vent. When venting through a side wall your vent pipe must have the proper temperature rating (see Figure 24). Manufacturer's clearances must also be maintained. Consult the authority having jurisdiction in your area regarding venting through side wall.
Figure 22 - | Vertical |
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Venting Through Ceiling | Figure 23 - Vertical Venting | |||
Using Two 90º | Elbows | Configuration Through Chimney | ||
Figure 24 - Venting Through a Side Wall
INSTALLING VENT SYSTEM IN A CHASE
A chase is a vertical
NOTICE: Treatment of firestops and construction of the chase may vary from building type to building type. These instructions are not substitutes for the requirements of local building codes. You must fol- low all local building codes.
Note: When installing in a chase, you should insulate the chase as you would the outside walls of your home. This is especially important in cold climates. Minimum clearance between vent pipes and combustible materials such as insulation is 1".
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