Gas Furnace Vent Pipe Size

The different types of venting.

Gas furnace vent pipe size.

Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys. Any resulting gas byproducts are cool enough to vent them outside through a pvc pipe. The condensed water is run to a floor drain. Change the furnace filters at least every three months.

Before we leave the shop let s check the furnace to get the rating flue collar size and the installation instructions. The vent pipe of your gas furnace plays an important role by carrying all toxic gases created during the combustion within the furnace out of the building. This determines the size of vent pipe fittings and flashing needed to install the vent system. If you have pets you should do it more frequently.

Change the air filters regularly. C gas pipe connection size d flue collar outlet size nate. In contrast modern high efficiency condensing furnaces exhaust much cooler gasses and need only plastic pipe materials such as pvc cpvc or abs for their exhaust vents some high efficiency furnaces also include a plastic pipe for intake area and all types. As noted 4yr old gas furnace vent pipes run straight across walk out basement and out the rear wall.

The vent pipe or flue is a vital component of the furnace that transmits emissions from the combustion process out of the building. When we are talking about gas furnace vent pipe code we need to talk about the different types of the vents first after all you want to keep your family safe from harm. A simple 1 fiberglass filter will protect the blower and. Gas vents 12 inches 305 mm in size or smaller with listed caps shall be permitted to be terminated in accordance with figure g2427 6 5 provided that such vents are at least 8 feet 2438 mm from a vertical wall or similar obstruction.

Well the furnace nametag tells us that the furnace has a rating of 130 000 btu input the collar size is 4 in and the furnace is a natural draft. Measure the diameter of the circular flange where the vent attaches at the back of the furnace. Duravent 4 x 6 5 8 directvent pro direct vent pipe double wall co linear masonry chimney conversion kit with flex pipe and prairie cap model. The gas vent sizing tables are not applicable to outside exposed chimneys or vents below the roofline per nfpa 54.

Atype b vent lining an exposed masonry chimney is considered to be an enclosed vent system and these tables may be used. For many homes a gas furnace is the preferred heating device it has proven to be an efficient and reliable way of meeting household heating needs over the years.