Clear Attic Furnace Flue

Most of the time this gas escapes through the vent pipes but if the pipe and furnace are not properly maintained the gas may not be dispelled.

Clear attic furnace flue.

The furnace is located in the stem. When you place a furnace in the attic to take advantage of its. A furnace in the attic is a design that works for all homes. This article series describes b vent metal chimneys used for gas fired appliances.

As the title states my furnace flue pipe in the attic is producing moisture which is leaking down into my second floor bathroom ceiling. We discuss fire safety fire clearances and other gas appliance venting details for b vent chimneys. Municipalities may require a minimum of 30 clear inches in front of the furnace which can be accomplished in a small room if the door to the room opens in front of the furnace. Where the system is routed to the outdoors through an existing masonry chimney containing flue products from another gas appliance or where required by local codes then 3 venting of type 29 4c stainless steel must be used in place of pvc material.

I ve noticed that when i get a light dusting on a snow free roof the first place to melt is the channel between two truces that goes from where my furnace flue exits the roof up to the peak. The roof is a t shaped gable roof. The top of the t has soffit vents and a ridge vent. Masonry flue or shared flue venting.

One of the furnaces is in the attic. Apply a thick bead of high temperature caulk the flue on one side. It is colorless and odorless and produces symptoms similar to the flu. There are 3 gas furnaces and ac units.

The stem of the t has soffit vents and no vent at the top. 2015 irc m1305 recommends that the furnace have a level working space of at least 30 inches by 30 inches in the front of the appliance. The furnace btw is natural gas and drives a hot water baseboard heat system. Combustion in gas furnaces produces some carbon monoxide which is a toxic gas.

The issue is the flue itself gets nice and warm which means there is effectively a heater going in the attic when the furnace is active. See also condensing boilers furnaces. It seems like this happens at random but mostly when it is really cold outside like 15 f or colder and it doesn t have to be snowing. Heat leak in attic caused by furnace flue pipe i ve been in my home for 5 years and have had consistent ice dam issues in the minnesota winter.

You might not receive the same air movement benefits if the unit is in a garage either. Remove the insulation between the joists where the flue is located to clear an area about 18 inches away from the flue on each side. Type b vents ceiling floor wall clearances b vent clearances to combustibles clearance distances for a b vent to combustible materials in floors walls ceilings attics roofs.