Combined Furnace And Water Heater Vent

Installation operation and service manual residential storage type gas water heater source.

Combined furnace and water heater vent. With a replacement high efficiency furnace the existing vent pipe does not work for water heater only because the vent is too large. This is called a common vent configuration. Power vent units use indoor air for combustion and simply vent the exhaust to the outside. The furnace is induced draft the water heater natural.

I know that irc g2427 3 3 4 allows these two appliances to join into a common vent connector. Facts about tankless water heater venting. 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. Direct vent units pull in air from outside the house so.

Tankless water heaters can be vented in two ways. The photo below shows typical combined furnace water heater venting. In many cases the exhaust from the larger appliance heats up the common vent improving the flow of the water heater vent. High e furnaces have separate venting.

Failure to properly vent this water heater can cause an explosion fire or carbon monoxide poisoning which may result in property damage personal injury or death source. I checked the irc and it says where two or more vent connectors enter a common gas vent the smaller. I recently turned off the gas to the house in order to shorten and recap a pipe not connected to the water heater. Gas tankless water heaters don t have to use indoor air for combustion.

I know around here that the two cannot be inter connected as one unit is power vented and could possible send exhaust fumes into the other unit in the event of a blocked condition. They are connected at the wye. American water heater company cited below. Hi all i have an ao smith 30 gallon natural gas water heater that has performed well for the 8 years i have lived in my house.

The water heater vent is located below the furnace vent at the wye.