Water Heater Furnace Flue

A flue that is too large allows too much air to circulate making it difficult for the warm gas and vapors exiting the furnace to create a strong updraft up and out of the vent.

Water heater furnace flue. 6 flue 28 27 square inches 8 flue 50 27 square inches. This is extremely important and serves various purposes properly sized chimney flue. To determine the main flue size refer to figure 3 and locate the square inch area of each individual flue size. Let s say you have a job where you combine a furnace or boiler 8 flue with a water heater 6 flue.

Water heater ducts may lead directly outdoors or they may tie into a larger vent duct that also serves a gas or propane furnace or boiler in the home. The duct may be metal or plastic depending on the type of vent system. Make sure that you chimney flue size diameter is correct. Atmospheric venting refers to a system in which exhaust from the water heater naturally rises out of the appliance s combustion chamber then travels up through a standard chimney style flue that.

Automatic flue dampers when a gas fired furnace or water heater is operated in a home or other building room air is drawn through the furnace or heater to help burn the gas. All water heater venting systems use a vent duct or pipe also called a chimney or flue to bring exhaust gases from the water heater to the outdoors. Some of the consequences of an excessive or insufficient chimney draft are. Prevents acidic condensate from forming on the furnace water heater chimney flue walls colder gases in large size chimney flue will not have enough energy to travel all the way to the top and discharge.

If the furnace is a forced draft model the water heater must connect above higher and closer to the vertical flue pipe in an approved manner so that flue gasses go up the stack and not out the water heater draft hood.