What is class A flue?
Class A pipe is used to vent high-temperature exhaust released from wood, coal, and oil-burning appliances such as fireplaces, stoves, boilers, and furnaces. Not every venting system requires a Class A pipe, but it is absolutely necessary for use with all wood-burning fireplaces and stoves.
What size are chimney flues?
Masonry Flues
| Flue Size | Common Venting Uses | |
|---|---|---|
| Outside Diameter (inches) | Inside Area (square inches) | |
| 7 1/2 X 7 1/2 | 31 | Stoves, Central Heaters |
| 8 1/2 x 8 1/2 | 41 | Stoves, Central Heaters |
| 8 1/2 X 13 | 70 | Stoves, Fireplaces, Central Heaters |
How do you size a flue pipe?
As a general rule, the diameter of the chimney should match the flue collar on your wood stove. A 6-inch stove requires a 6-inch flue. In most cases, a step up is also fine. For example, you could vent a 6-inch stove into an insulated chimney that is 8 inches in diameter.
Can a fireplace flue be too big?
If the chimney is too small, it may not have room for the volume of rising air the stove requires. If it is too big, it may draw too slowly for the appliance, and may never heat up enough to compensate. For this reason, both flue undersizing and flue oversizing should be avoided.
Are Selkirk and Supervent compatible?
Inner pipe fabricated with 304L stainless steel. Selkirk Metalbestos Ultra-Temp is compatible with Selkirk’s UT, SS, SS2, Sure Temp (Not compatible with Super-Vent).
Can a flue be too long?
A flue that is too long, therefore, could also cause problems with ignition and may affect combustion. When a boiler isn’t burning fuel correctly, there is a risk of carbon monoxide production. So long as the flue is the correct thickness for the additional length, you shouldn’t run into problems like these.
Can a flue pipe be too large?
Flue pipe is too big for the furnace. Excessively large flues reduce the velocity of the combustion products, allowing them more time to dissipate heat through the pipe walls. Flues that were acceptable for natural-draft furnaces are often too large for the new, 80% induced-draft furnaces.
How do you measure a flue?
1 – Measure Your Chimney Flue
- Measure inside the chimney SIDE TO SIDE & FRONT TO BACK at the narrowest part of the flue (usually about 600mm above the opening).
- FINALLY measure to the narrowest part of the flue from the top of the fireplace opening.
What is A1 flue system?
A1 Flue Systems acknowledge that there may be certain times where space is restricted.
Who is A1 sheet metal?
A1 Sheet Metal, Inc., based in Tulsa, OK, specializes in custom metal buildings and fabrication. With decades of experience, we offer premium quality products and unsurpassed service in the industrial and sheet metal fabrication industry.
Why choose CE-marked flue pipes?
We have built a reputation for the quality, performance and durability of our CE-Marked flue pipes, especially our single-skin flue systems and twin-wall flue systems. But that’s just part of the story because there’s more to flue systems than just the pipes.
What is A1 flue systems doing at Twickenham Stadium?
A1 Flue Systems has completed a project on Twickenham Stadium in London – which is the home of England Rugby and with a seating capacity for 82,000 spectators, making it the largest dedicated Rugby venue in the world.