Furnace Flue Pipe Installation

Check the area where you will install the flue pipe.

Furnace flue pipe installation.

Galvanized flue pipes must not be used because the coatings vaporize at high temperatures and release dangerous gases. Flue pipe is too small for the amount of combustion gases generated by the furnace. Use black painted flue pipes. In the old masonry chimneys the tile flues can crack or break over time due to the effects of repeated heating and cooling of the air inside the chimney.

Installing a flue pipe is the most important part of the installation of your new furnace. These toxins can have a deadly effect. Without it smoke and other toxic materials will build up inside the house. The pipe then slips into the hole and is sealed with a high temperature silicone caulk.

Pull away insulation or install an insulation shield to keep the area clear around the pipe. The size would depend on your furnace s flue pipe connection. 6 7 and 8 inch diameter flue pipes must be at least 24 gauge in thickness. This allows the hot combustion gases to to move into the chimney easier.

A flue pipe is a metal pipe that either stands alone as a chimney pipe leading from a furnace or runs inside a masonry chimney. Cut a framing hole at least 10 inches in diameter with a jigsaw tool. Pitch the flue pipe up toward the chimney. You would core a hole 1 4 to 1 2 inch bigger than the outer diameter of the pipe.