Furnace Vent Into Chimney

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

Furnace vent into 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. It could either go out the unused walled in chimney that the oil furnace was vented through or they could cut a hole in the concrete block wall and vent it out the side of the house. Cut the tip of a caulk tube with a utility knife. Refer to figure 2.

If your furnace vents into a chimney a combustion safety test is the only way to be absolutely sure that combustion gases aren t backdrafting into your home. Look closely at these connections and you will likely see gaps. 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. Inject the silicone caulk into the gap between the vent and the side of the house or foundation.

2 currently venting gas appliances to a tile lined masonry chimney is allowed if all these conditions as regards the. Appliances manufactured around this time were about sixty percent efficient fuel used versus heat generated for the structure. The basement ceiling is about 6 1 2 or 7 feet high. Furnace vents into chimney 1 currently venting gas appliances to an unlined masonry chimney is prohibited.

This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. Consequences of improperly assembled vent pipes problematic chimney flue deteriorating chimney walls can be sometimes fatal fire and carbon monoxide poisoning are topping the list. The exhaust system typically uses metal venting often routed into a chimney stack to exhaust the combustion gases created in the furnace fire chamber. Brush away any dirt or dust from the area around the furnace vent that you will be sealing.

Through these gaps if left unsealed combustion gases may leak into your home and build up to unhealthy levels. If you have an older furnace it likely vents into a chimney with rigid metal duct. A conventional natural gas furnace will vent the dangerous combustion gases through a simple vertical exhaust system that is attached to the furnace. If it went out the chimney it would leave more headroom.

Can you vent a high efficiency furnace out of a chimney. The connections on the flue slip into each other secured with screws. Also known as the type b this vent is operating on the natural air convection. When the vent is withdrawing air from the house it expels the gas outside through the vent.