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April 19, 2013
Can Type B Vent be wrapped with insulation to keep it warm?

No. The vent requires a minimum of one-inch clearance to all combustible material. For severe problems such as cold attics, contact the Technical Services Department of the manufacturer for alternative solutions.

April 19, 2013
What gauge metal is the AmeriVent® Roof Flashing?

AmeriVent Flashings are made from .018 inch, 26 gauge, G90 galvanized steel, as are the firestops and the outer wall of the vent sections.

April 19, 2013
Do elbows require special supports?

A Type B Gas Vent elbow is not designed to carry any load, therefore, whenever an elbow or offset is used, it must be resupported.

April 19, 2013
When and where should firestops be used?

First, a metal firestop must be used at each floor level that the vent passes through, with the exception of the roof level where no firestop is required. Secondly, the firestop should always be located at the bottom surface of each floor level except for the upper floor where the firestop should be installed on top of the joist areas in the attic.

April 19, 2013
How many elbows or offsets can be used in a vent system?

The rules may vary from area to area, and you should always check with the local building inspector. With the appliances used today, the use of an excessive number of elbows can cause condensation problems. Try to limit the installation to no more than two 90 offsets and to use offsets of no more than 45 wherever possible.

April 19, 2013
Is there a correct 'up and down' direction for installing AmeriVent® components?

Yes. There is a correct direction, and each section is marked with an 'up' arrow that shows the proper orientation, or direction of the section, which is always away from the appliance.

April 19, 2013
Will strong winds blow the Ameri-Cap off the vent?

No! Because the AmeriVent snap-lock locking system cannot be accidentally unlocked, unlike other types of cap locks, the Ameri-Cap will never blow off in strong winds.

April 19, 2013
In the AmeriVent® system, will the air in between the two walls rise up and create heat loss and condensation problems?

No, the two walls are spot welded together at the top of each section, and therefore, the air inside cannot rise because the space is dead air space.

April 19, 2013
How far above the roof does the vent pipe need to extend?

With the patented AmeriVent Ameri-Cap, the system can be installed on most roofs with an outlet at a minimum of one foot above the roof. It is important that the installer read the Termination Section of the Installation Instructions and the local building codes to check for exceptions.

April 19, 2013
How long will the AmeriVent® Type B vent last?

AmeriVent components are made from materials unsurpassed in the gas vent industry and should last as long as the heating system in your home. The inner wall is made from a highly corrosion resistant aluminum alloy and the outer wall is made of a hot dipped galvanized steel that meets or exceeds all UL requirements.