Venting Gas Furnace Through Chimney

Consequences of improperly assembled vent pipes problematic chimney flue deteriorating chimney walls can be sometimes fatal fire and carbon.

Venting gas furnace through chimney.

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. You should know how to vent a gas furnace and get rid of the harmful gases for the health and safety of anyone living in your building. Of the vent plus the furnace input and efficiency are factors affecting the temperature of the flue gases. Kits in this category include those designed for natural draft appliances using gas oil or wood.

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. A conventional natural gas furnace will vent the dangerous combustion gases through a simple vertical exhaust system that is attached to the furnace. Two cases which can cause poor venting are the oversizing of the vent or reducing the. On the other hand the higher the efficiency of a furnace the lower the flue gas temperature.

Higher btuh furnaces produce higher flue gas temperatures. Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys. The conditions explained in this post also apply to the wood burning appliances. The exhaust system typically uses metal venting often routed into a chimney stack to exhaust the combustion gases created in the furnace fire chamber.

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. The area around the flue piping should be sealed where it enters the chimney. Refer to figure 2. As well as those suitable for category i gas fired appliances with b vent or appliances with a draft hood.

Ameri vent chimney liner kits are designed to allow you to easily line masonry chimneys.