Admin Table of Contents
How do you size a gas vent?
To determine the proper vent size for a single-appliance vent, use Table 1 or 2 (pages 12-14). Determine Total Height (H) and Total Lateral Length (L) based on location of appliance and vent and the height to vent termination. Read down the Total Height (H) column at the left to a height equal to the Total Height.
What diameter is B vent?
Gas Vent Pipe; Type Type B Gas Vent, Double Wall, Round; Size 4 Inch Inner Diameter x 4.5 Inch Outer Diameter; Length 36 Inch; End Type Lock Ring; Material Thickness 0.012 Inch (Inner Wall), 0.018 Inch (Outer Wall); Material Aluminum (Inner Wall), G90 Galvanized Steel (Outer Wall); Temperature Rating 400 Deg F; …
What is Type B vent used for?
Type B vents are vents suitable only for listed, draft-hood equipped, gas-fired appliances, including most domestic heating and hot water systems. any appliance that produces flue gasses that exceed 480° F (249° C).
How hot does a gas vent pipe get?
86 to 100 degree F.
The pipe material temperature value is usually 86 to 100 degree F. The temperature should be taken outside of the furnace cabinet.
What is Type C vent?
Type C vents are used only as connectors. They are single walled galvanized pipes, and as such often called “galvanized pipes”. They are used only for venting gas or oil. Using a C vent with solid fuel appliances can cause extremely toxic fumes.
What is the difference between B vent and direct vent?
A B-vent must be vented vertically and uses fresh air from inside the home to provide oxygen to the fire. A direct vent has a sealed glass front and pulls all of its fresh air from outside the home. Direct vents can be vented vertically or horizontally through an exterior wall.
What size flue do I need for a gas fire?
The minimum flue size is 5″ in diameter. Again, expect to have a flat wall in your room. This flue type will accept the shallower gas fire type. In certain circumstances, your home may not have any of these flue types.
Can a flue be too big?
When a flue is too big, the chimney can be too cold. Cold chimneys make keeping a fire lit more difficult. They also lead to condensation and possible mold inside the chimney brickwork. They key to making and keeping a great draft in your fireplace is making sure the proper sized flue is installed.