Flue Vents For Chimneys

The area around the flue piping should be sealed where it enters the chimney.

Flue vents for chimneys.

A flue is simply a passage for conveying exhaust gases from an appliance to the outdoors. An unlined chimney is technically a flue even though an unlined chimney is a fire hazard. Refer to figure 2. This triple wall manufactured home chimney stove vent kit is designed to vent a stove through a mobile manufactured home roof and features all the necessary items for installation including two chimney pipes with two insulating layers a ceramic blanket plus air space.

For the venting of oil fired appliances to masonry chimneys the resizing shall be in accordance with nfpa 31. The purpose of the flue is to protect the rest of the home from the heat of the byproducts of combustion caused by a fire. For the venting of oil fired appliances to masonry chimneys the resizing shall be done in accordance with nfpa 31. This can cause confusion as many view flues not just as a passage for venting but as a safe passage for venting.

A flue may be a duct pipe vent or chimney. Ducts pipes vents and even chimneys can all be considered types of flues. When venting two appliances separately into a common chimney always install the smaller flue pipe appliance with lowest gph input at a higher point into the chimney than the larger flue pipe for the appliance with the largest gph input. Direct venting or side wall vent chimney and flue systems are a method of venting the exhaust gases from a heating appliance directly out through the side wall of a building while eliminating the need for a vertical chimney of any sort.

The chimney or vent shall be resized as necessary to control flue gas condensation in the interior of the chimney or vent and to provide the appliance or appliances served with the required draft.