Gas Furnace Vent Pipe Temperature

Gas vent pipe from grainger manufactured by reliable companies like ameri vent and bosch comes in lengths of up to 4 l.

Gas furnace vent pipe temperature. Flue gas temperature flue gas temperature affects vent operation because the hotter the gases are the lighter they are. Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys. The low temperature residual flue gases vent outside through special plastic pipes. The design btuh british thermal units per hour capacity of the vent plus the furnace input and efficiency are factors affecting the temperature of the flue gases.

Heat will seal the tape to the metal pipe as the temperature climbs. In the middle 1980s a few gas furnaces started using inducers to exhaust the vent gasses. These furnaces were higher efficiency than the older natural draft furnaces. These vent pipe kits include storm collar kits vent adapters connectors and elbows.

Good up to 600 degrees f. This temperature should be taken inside the vent pipe approximately 8 to 12 inches outside the furnace cabinet. The different types of venting. Higher btuh furnaces produce higher flue gas temperatures.

Whether the furnace is a standard a conventional furnace 50 70 mid efficiency 70 80 or a high efficiency furnace the provision for combustion air and flue gas vent systems is very important. When we are talking about gas furnace vent pipe code we need to talk about the different types of the vents first after all you want to keep your family safe from harm. When applied to a cooled down pipe. When your new high efficiency condensing furnace is installed your contractor should take extra precautions to make sure all ventilation systems are properly placed and working correctly.

Drill a small hole in the vent material and insert your thermometer so it is about in the center to the pipe and see what the combustion gas temperature is inside the pipe. The vent temperature of these furnaces is much lower than natural draft. Some building inspectors discourage taping up furnace clothes dryer and water heater flue joints so check your local building codes before using this tape especially when selling your home. Mid efficiency furnaces have an afue annual fuel utilization efficiency of 80 and high efficiency furnaces have an afue of 90 98.

That meant the vent temperature sometimes was low enough to condense water from the gasses.