What is a type B flue vent?
Flue Vents Type B double wall flue vents are used to vent gas appliances that produce flue gases no higher than 480 degrees Fahrenheit, while L-vents usually vent oil furnaces that produce gases no higher than 570 degrees Fahrenheit. B-vents must never be used with anything except LP or natural gas.
How hot can A B vent get?
By design, B vent is capable of withstanding 400F above room temp. in the stack. The temp. of the outer casing varies with a lot of factors and is not part of the UL 441 test. That test allows a temp. rise of 90F plus ambient on plywood, painted flat black, encasing the venting.
How to choose the right type B gas vent?
To control the heat loses, proper selection of venting materials is of vital importance. Double-wall Type B Gas Vent, with an aluminum inner wall and a galvanized steel outer wall, has proven to be the ideal choice in venting materials. Using listed Type B Gas Vent caps may terminate in accordance with this table.
What is the temperature inside a B-vent pipe?
80 plus temp runs about 300 to 400 degrees inside the b-vent the outer temp of the pipe will be determined by the inside temp and the amount of heat the aluminum liner can absorb atmicphereic draft can be higher i have seen cases where you could not put your hand on the b-vent this is why 1in clearance is required.
How high can a vent rise above ambient temperature?
What is the listing standard for BW venting?
How far off the floor is a vent?
Is B-Vent hot or cold?
How hot does class B vent pipe 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.
How hot does a vent get from heat?
The Heating Process A blower fan blows air through the heat exchanger and then into ductwork that distributes the heated air to vents around your home. When the combustion occurs and air is first heated, the temperature is between 140 degrees F and 170 degrees F.
How hot does a direct vent pipe get?
The heating capacity from a direct-vent fireplace can be as high as 40,000 Btuh (Btu per hour). In order to keep your family room from overheating, select a thermostatically controlled model. Some models have two-level burners so the gas logs can be fired at a lower heat level during mild weather.
When should a Type B Vent be used?
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).
What temp should air be coming from vents?
In a properly functioning AC system, it should be approximately 15-20 degrees Fahrenheit (F). Some HVAC experts may vary these numbers slightly, (14-20 or 16-21), but 15 to 20 is a good range to use for our purposes here.
What temp should be coming out of vents?
Now, from the example above, with 75 degree air being pulled in at the air filter, what temperature should we expect to be blowing out? Well, the general consensus is somewhere between 14 to 20 degrees colder than the intake temperature. From my example, 55 to 61 degrees would be an acceptable range.
Which is better direct vent or B vent?
Direct-vent appliances are typically higher in efficiency than b-vent appliances and put out a lot of heat even with a low flame setting. Cons: Direct fireplaces have a sealed glass front and typically a smaller flame than a b-vent fireplace or a vent-free fireplace.
What is the difference between direct vent and B vent?
What is the difference between a Direct Vent and a B-Vent gas hearth product? 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.
How efficient are B vent gas fireplaces?
Of the three, B-vent fireplaces are the least efficient in energy use. Although they may be cheaper to install in some cases, a cold draft down the chimney on a windy winters day, may result in chilled air pushed out through the unit. As well, with this venting system, some heat loss may occur out through the chimney.
Can B vent touch drywall?
No. Drywall and wallboard are considered combustible materials and should not be installed against the vent including the use of this material to close off the hole around the vent. Type B Gas Vent requires a minimum of one-inch clearance to combustibles.
Can B vent touch wood?
Type B Vent shall not be used to vent flue products from incinerators, combination gas/ oil appliances, oil-fired, or wood-burning appliances.
Can B vent go through wall?
Can Type B Gas Vent terminate horizontally on a wall? No, only Cat III 1738 approved systems can terminate on a side wall.
What temperature is heat register?
Bottom line: the supply air temperature at a room supply register is typically 100°F-110°F.
How hot is fire in Fahrenheit?
Deep red fire is about 600-800° Celsius (1112-1800° Fahrenheit), orange-yellow is around 1100° Celsius (2012° Fahrenheit), and a white flame is hotter still, ranging from 1300-1500 Celsius (2400-2700° Fahrenheit).
b-vent temperature
What is the acceptable temperature of the exterior pipe on b-vent exhaust. I have a 100k btu Lennox furnace with about 6 feet of b-vent connecting to a c-vent "Y" with my water heater and continuing horizontally about 10 feet before going vertical about 15-20 feet through the roof. I ask because the a/c pvc drain is near, 1.5 inches away, the exhaust and shows signs of scorching.
How hot is your woostove/stovepipe?? - Homesteading Forum
A post a while back about wrapping a stovepipe with copper tubing to heat water got me thinking. I have a Raytek non contact infrared thermometer and my stove is burning. it's in the 30's outside and in the 80's in here so I've got it's air cut back. stove top griddle is 350* stove sides...
What is a safe flue temp? What is too hot? - Hearth.com Forums Home
This question gets asked a lot. The first thing to clarify is - are we talking about reading the surface or probe temps? Single wall pipe gets a surface thermometer, double-wall connector stove pipe gets a probe thermometer. For either pipe you want to avoid continuous, temps over 900F. An...
The Temperatures for a Double Wall Chimney Pipe | eHow
Double wall chimney pipes are designed to protect buildings from high temperatures generated by some heating appliances. These pipes only need a 2-inch clearance to combustibles because they remain cool on the outside, while their internal design allows them to withstand temperatures as high as 1,700 or 2,100 degrees Fahrenheit for a limited time.
Double Wall Stove Pipe Temps | Hearth.com Forums Home
PGMR took the words right out of my mouth . . . well my mind. As I was reading this thread I thought "Why wait?" As mentioned surface temps of the double wall pipe really don't give you very good readings . . . and installing a probe thermometer is so simple even a dumb Maine firefighter can install one in 15 minutes (and it should be mentioned that the first 5 minutes of this project was the ...
What is the clearance for single walled vent connectors?
Clearance to single walled vent connector is 6" for gas; 18" for oil and wood. Straight out of NFPA 211.
Can you run B vent directly from furnace?
many recommend running B-vent directly from furnace - maintains exhaust gas temps, and takes care of your clearance issues. We've had to do that in many communities for that very reason.
What is a Type B gas vent?
The Type B designation is assigned to gas venting systems that meet the safety requirements of Underwriters Laboratories, Inc . The AmeriVent all-metal, double-wall gas vent is listed as Type B by Underwriters Laboratories, Inc. and is approved for such residential and commercial applications as Category 1 water heaters, boilers, furnaces, space heaters, or wall heaters. UL-approved Type B gas vent products form a continuous passageway from an approved gas appliance to the termination of the vent above the roof of the structure.
How much clearance does a Type B gas vent need?
One of the fire safety features of double-wall Type B gas vent is that its outer wall, insulated by the airspace beneath it, requires only 1” clearance to combustible material in the structure.
What is the purpose of a galvanized steel flue gas vent?
The outer pipe of corrosion-resistant galvanized steel ensures strength, safety, and durability. If the flue gases are kept rising at the proper rate, the structure is kept free from pollution, and condensation damage is eliminated. Although a large portion of the flue gas is composed of water vapor, AmeriVent Type B gas vent carries it out ...
What type of pipe is used in Amerivent?
AmeriVent Type B gas vent uses a double wall of metal pipe for insulation and safety. The inner pipe of reflecting aluminum heats quickly, containing the warm flue gases inside. The airspace between the inner and the outer pipes provides insulation against heat loss to keep the warmer flue gases on the rise. The outer pipe of corrosion-resistant galvanized steel ensures strength, safety, and durability.
What is the length of a Type B gas vent?
Pipe lengths are available in multiple lengths, 6 to 60 inches, with a full complement of adjustable and rigid fittings. Type B gas vents are not suitable for use with wood-burning or coal applications, industrial ovens, exhaust ranges and hoods, grease or pollution ducting, or as free-standing exhaust vents for high-temperature applications.
What is Duravent Type B?
DuraVent Type B Gas Vent is designed to meet the rugged demands of the job site. The inner wall is recessed to eliminate damage in handling.
What type of vent is used in Duravent?
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.
How tall is an oval furnace?
When oval is used on wall furnaces, minimum height required from bottom of furnace to cap is 12′, minimum 16″ stud space.
What is a type B double wall flue vent?
Type B double wall flue vents are used to vent gas appliances that produce flue gases no higher than 480 degrees Fahrenheit, while L-vents usually vent oil furnaces that produce gases no higher than 570 degrees Fahrenheit. B-vents must never be used with anything except LP or natural gas.
What is a flue vent?
It can become even more confusing when you start talking about flue vents, which are a type of thin-walled metal chimney used to vent oil or gas appliances. Double wall flue vents are also available.
Who is the author of The Temperatures for a Double Wall Chimney Pipe?
The Temperatures for a Double Wall Chimney Pipe. By Lani Thompson. ABOUT THE AUTHOR. Lani Thompson. Lani Thompson began writing in 1987 as a journalist for the "Pequawket Valley News.". In 1993 she became managing editor of the "Independent Observer" in East Stoneham, Maine.
How high can a chimney pipe withstand?
These pipes only need a 2-inch clearance to combustibles because they remain cool on the outside, while their internal design allows them to withstand temperatures as high as 1,700 or 2,100 degrees Fahrenheit for a limited time.
How high can a vent rise above ambient temperature?
If the vent is listed for a zero clearance at any point to combustibles, the outer surface of that vent cannot rise more than 90*F above ambient.
What is the listing standard for BW venting?
It allows for a maximum rise on surface temps in the test structure of 90*F above ambient when the stabilized flue gases read 400*F above ambient for 1.5 hrs then 117*F after that. The test structure for B-vent is 3/8" plywood while BW requires 3/4". Thermocouples are placed strategically all over the box and in the vent.
How far off the floor is a vent?
Once the vent has reached equilibrium, measurements are taken at 4 circumferential points 48" off the floor inside the vent and on its outer jacket. There must be a min. 10*F temperature differential btw those readings.
Is B-Vent hot or cold?
I wouln't worry about it. Typically B-Vent gets warm but not hot. If you are concerned there may be something wrong have a pro analyze the flue
