Asked by: Yosra Sarat
home and garden home appliances

What is B vent pipe used for?

Last Updated: 20th March, 2020

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A B-vent gas fireplace is a type of natural draft system that uses a special pipe to carry combustion gases out of your home. While B-vent fireplaces can be an efficient heating method, they can have drawbacks as well.

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Similarly one may ask, what is a Type B vent pipe?

Type B Gas Vent Pipe. Type B Gas Vent has been engineered to heat up rapidly. It remains hot during the operation of the appliance with minimal condensation in the appliance and vent system. Pipe lengths are available in multiple lengths, 6 to 60 inches, with a full complement of adjustable and rigid fittings.

One may also ask, is B vent single or double wall? A B-Vent is a metal flue gas exhaust vent with a double wall type of construction. The inner wall conveys the flue gases out of the building while the double wall helps flue gases warm enough to properly exit the home and reduces clearance requirements to combustibles.

Also know, what does B vent mean?

B-Vent Fireplaces B-vent gas fireplaces, also known as natural vent fireplaces, or as a b vent fireplace, use air from inside your home to fuel combustion and rely on the buoyancy of hot gases to vent exhaust through dedicated pipe systems.

Can B Vent be used horizontally?

No, a B vent pipe cannot be terminated horizontally. According to manufacturers, all B vent pipes must terminate vertically with a rain cap in place in order to vent properly. An appliance that is approved to vent horizontally is most often not compatible with the use of a B vent pipe.

Related Question Answers

Rababe Touzon

Professional

Can I cut B vent pipe?

B-vent cannot be cut.

Maiane Hermkens

Professional

What is the difference between B vent and direct vent?

What is the difference between B-Vent and Direct-Vent? B-vent appliances use a single exhaust pipe and draw combustion air from the room into the combustion chamber and up through the chimney. These devices are sometimes referred to as “natural-vent”. Direct vent appliances are sealed to the room.

Fortia Hagenguth

Explainer

How hot does B vent get?

Type B Gas Vent is designed for negative pressure applications and flue gas temperatures not exceeding 400°F above ambient for Category I appliances.

Elmer Gudt

Explainer

What size B Vent do I need?

When a vent is less than 10 feet high, the vent should be at least as large as the flue collar outlet. b) Vents for draft hoods or flue collars 12 inches in diameter or less should NOT be reduced more than one pipe size. A 6- to 5-inch or a 12- to 10-inch reduction is a one- pipe size reduction.

Amane Fockert

Explainer

What is class 3 vent pipe?

Category III is defined as a gas heating appliance with a flue loss equal or greater than 17% (non-condensing) with a positive vent static pressure. In a Category III venting system, if there is a leak in the venting system, flue gas will flow from the flue pipe into the space.

Alcina Tetu

Pundit

What is C vent pipe?

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. This is the least expensive of the pipes.

Paulo Carapu├ža

Pundit

How does AB vent work?

B-vent gas fireplaces draw interior air from the area around your fireplace to help fuel combustion inside the appliance. Because hot flue gases are buoyant, the exhaust air moves naturally through its own pipe system, upward through your roof, where it is carried out the chimney and safely away from your home.

Javiera Isaevich

Pundit

What is a Class B vent?

The inner wall is recessed to eliminate damage in handling. Type B Gas Vent has been engineered to heat up rapidly. It remains hot during the operation of the appliance with minimal condensation in the appliance and vent system.

Atman Tzelischev

Pundit

What is a Class B chimney?

Class B chimney pipes are used specifically with gas-burning stoves or heaters. Outside air is sucked into the gas-burning chamber to add fuel to the fire. While oil, coal and wood-burning appliances requires the basic Class A chimney pipe, corn and/or pellet-burning appliances call for a different venting system.

Enna Weynandt

Pundit

Is B vent pipe double wall?

The double wall (pipe within a pipe) construction with its built-in air space, provides permanent insulation and keeps the inner pipe hot and the outer pipe relatively cool. Such construction creates quick, strong vent action, eliminates condensation in the pipe or overheating of nearby enclosure surfaces.

Edvaldo Oiarzabal

Teacher

What is direct venting?

"Direct vent" refers to a sealed-combustion system in which air for combustion is drawn from the outdoors, and waste combustion gasses are exhausted to the outdoors. "Direct vent" does not simply mean that all gasses from combustion are vented to the exterior of the structure in which it is installed.

Piedras Tiggeler

Teacher

Can you vent a fireplace sideways?

Direct Vent Gas Fireplaces – most are vented to the outdoors horizontally directly through the wall, but they can also be routed vertically through the roof. Wood Fireplaces and Stoves – venting must be terminated to the outdoors vertically.

Malkit Kosuri

Teacher

How do you vent a furnace through the roof?

How to Vent a Furnace in a Roof
  1. Locate the spot to install the vent pipe, using a tape measure to determine distance from a wall or other identifiable spot.
  2. Run the vent pipe up through the roof and install a metal or PVC flashing collar over it.
  3. Put a cover on the vent.

Estefani Arraibi

Teacher

What type of gas fireplace is best?

Best Gas Fireplace Inserts Comparison Chart
PRODUCT PRICE WEIGHT
Mercury 32" Top/Rear Direct Vent Gas Fireplace w/Intellifire – NG $$$$ 80 pounds
Napoleon Grandville VF Series Vent-Free Natural Gas Fireplace $$$$ 91 pounds
Comfort Glow GSD2846 Dual Fuel Gas Stove $$$ 59 pounds
Pleasant Hearth Vent-Free Gas Stove $$ 78 pounds

Cathrine Garrigues

Reviewer

Can you vent gas fireplace into chimney?

A gas stove can be vented through an existing chimney, whether it is a manufactured or masonry chimney. When a gas stove is vented through an existing chimney, the flame is fueled by oxygen from the empty space around the liner, while exhaust leaves your home via the liner.

Lester Verdecia

Reviewer

Why are gas fireplaces so expensive?

It requires no venting, so all the heat stays in the room. Gas fireplaces burn natural gas to create a flame, and because gas is burning, it creates heat whether you need it or not. This means that the cost of running the electric 'flame' is far less than burning natural gas to create a flame.

Tiare Boronat

Reviewer

How does double wall vent pipe work?

The double wall (pipe within a pipe) construction with its built-in air space, provides permanent insulation and keeps the inner pipe hot and the outer pipe relatively cool. Such construction creates quick, strong vent action, eliminates condensation in the pipe or overheating of nearby enclosure surfaces.

Candis Wavrant

Reviewer

What is double wall stove pipe?

DSP - DOUBLE WALL STOVE PIPE. Black Stove Pipe connects a Wood Stove to Insulated Chimneys. Double Wall system features a Black Aluminized Steel outer casing and Stainless Steel inner liner. 6" clearance to combustible materials.

Vanesa Amra

Supporter

What is Type B gas?

DuraVent's Type B Gas Vent system. Use with natural gas or liquid propane category I and draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent. Applications include: natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.