Furnace Pvc Exhaust Pipe

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.

Furnace pvc exhaust pipe.

Pvc cpvc and abs. When the vent is withdrawing air from the house it expels the gas outside through the vent. Some high efficiency furnaces also include a plastic pipe for intake area and all types use a third plastic pipe to drain away the corrosive condensation resulting from the combustion process. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner.

I have a question about using pvc pipe for gas furnace exhaust. The outer pipe draws air for combustion from outside and the smaller pipe occupies the inner position and is used to vent the exhaust fumes. 3 rodent pvc vent screen for horizontal pipe vented furnaces hot water heaters and boilers pvs rs3. Kohree flying insect screen bug screen rv furnace vent cover replacement rv camper heater exhaust screen cover 2 packs 2 8 inch stainless steel mesh screen.

4 4 out of 5 stars 24. In other words this product is designed for 3 pvc for the inlet pipe and 2 pvc for the exhaust. The exhaust vent from most class iv units is a 2 exhaust thus the end of the fitting is designed for a 2 exhaust pipe thus a 2 5 bell for a 2 pvc. Plastic vent pipe types listed below have been certified by the american gas association for use in furnaces classified as category 4.

There are 3 plastic types of pipes certified by the american gas association for use in high efficiency condensing category 4 furnaces. This high efficiency venting system must be installed when you install the new furnace. Yet the manual and code seem to be ok either one as long as the respective astm specs are met. If the vent pipes are not protected by screens you take a big risk for furnace problems due to pipe obstruction or infestations from pests.

This type is an ideal alternative to natural vent systems. These pvc or cpvc pipes can be inviting to rodents and birds especially in the winter as well as insects mostly in summer looking for a home. This piping system incorporates two pipes of different sizes in one unit. Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys.

These particular types of furnaces use positive pressure vent systems exhaust gas temperature less than 1400f above the dew point temperature and are always equipped with an induced draft motor that. These pvc pipes are connected to the furnace and expelled outside. My contractor wants to buy new stuff because mine is cellular core and he says solid core is better. Duravent 5gvvth aluminum.

Basic instructions on how to run pvc flue venting on high efficiency furnaces. You ll need to reduce from 3 to 2 on the exhaust line.