Venting Gas Furnace Through Chimney

Refer to figure 2.

Venting gas furnace through chimney.

Proper furnace water heater venting is an extremely important issue which depends on the performance of the house chimney chimney flue or other exhaust assemblies. The area around the flue piping should be sealed where it enters the chimney. Ameri vent chimney liner kits are designed to allow you to easily line masonry chimneys. 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. 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. As well as those suitable for category i gas fired appliances with b vent or appliances with a draft hood. 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 exhaust system typically uses metal venting often routed into a chimney stack to exhaust the combustion gases created in the furnace fire chamber. Of the vent plus the furnace input and efficiency are factors affecting the temperature of the flue gases. On the other hand the higher the efficiency of a furnace the lower the flue gas temperature. Kits in this category include those designed for natural draft appliances using gas oil or wood.

Consequences of improperly assembled vent pipes problematic chimney flue deteriorating chimney walls can be sometimes fatal fire and carbon. Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys. Higher btuh furnaces produce higher flue gas temperatures. The vent pipe or flue is a vital component of the furnace that transmits emissions from the combustion process out of the building.

The conditions explained in this post also apply to the wood burning appliances.