Read through all of these instructions before beginning your installation. Failure to install as described in these instructions will void the manufacturer's warranty and may have an effect on your homeowner's insurance and UL listing status. Keep these instructions for future reference.

INSTALLATION NOTES

Simpson Dura-Vent Type B Gas Vent shall be used to vent only approved gas appliances with draft hoods and other Category I gas appliances listed for use with Type B Gas Vents:

Type B gas vents shall not be used for venting incinerators, conversion burners, combination gas/oil appliances, and listed category II, III, and IV gas appliances (NFPA 211, 1988).
These vents shall be installed in accordance with their listing as detailed in these instructions, and the requirements of the local authority having jurisdiction.

For more complex installations, or multiple appliance installations, refer to the "Sizing Handbook", which can be furnished by Dura-Vent dealers, or can be obtained by calling
800-835-4429.

Consult the appliance manufacturer's installation instructions to obtain the combustion and ventilation air requirements for the appliance. Additional information is provided in the National Fuel Gas Code (NFPA 54), as well as the "Sizing Handbook" furnished by Simpson Dura-Vent.

Use only listed Dura-Vent Home. Do not mix and match with other manufacturer's vents or improvised solutions. Do not install damaged vents.

Whenever possible, the vent should be continued straight out through the roof. If it is necessary to make offsets in the attic space, use 45° elbows, rather than horizontal run. Use metal tape to support offsets.

IN CANADA: Only components marked "FOR EXTERIOR USE ONLY" shall be used above the roofline