A slider along the stove bottom permitted the user to adjust the air intake rate - a necessary combustion and heat control since the installation of this stove in front of a small fireplace gave no access room for a flue damper control. The coal stove shown at above left was installed by the author (DF) in the 1970's. Details about draft and heat output control for coal stoves areĪt COAL STOVE OPERATION & SAFETY.
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Details about draft control for gas fired heating systems, including furnaces or boilers, are discussedĪt DRAFT HOOD, GAS HEATER On gas fired equipment.Ĭoal fueled heaters use manual dampers in the coal stove flue or for larger and automatically-fed coal fired boilers or furnaces the system may incorporate a thermostatically-operated automatic flue damper to control both draft and thus the system's heat output.Details about draft control on oil fired heating systems, including furnaces or boilers, are discussedĪt DRAFT REGULATOR, DAMPER, BOOSTER barometric dampers on oil fired equipment.The door opens or closes to let extra air into the flue to assure that the draft in the flue remains constant at the proper setting needed for proper heating system operation. The key difference between a barometric draft control or flue damper and an automatic flue damper is that the barometric damper operates by barometric pressure or natural draft while an automatic flue damper is operated by an electric motor. When the heating system has turned off at the end of an "on" cycle of burning fuel, the automatic flue damper electric (see sketch above and photo at left) motor turns a baffle inside of the flue vent connector pipe to a position "across" the pipe so that the airflow inside the pipe is blocked or stopped.ĭon't confuse an automatic flue vent damper with other "damper" devices: a heating system automatic duct damper or a duct fire damper or a heating zone damper.ĭefinition of Barometric Draft Control (also called Flue Damper) and they workĪ barometric draft control, also called a "damper" or barometric damper, is a hinged, weighted door on an opening at a heating flue. See DIRECT VENTS / SIDE WALL VENTS Definition of automatic flue damperĪn automatic flue damper is a device (shown below) that closes the heating flue when the furnace or boiler is "off" so that we won't continue to lose building heat up the chimney - it's a device to reduce heating costs and save on heating oil consumption. These vents don't use a barometric damper for draft regulation. BARMOMETRIC FLUE DAMPER or FLUE DAMPENERĭirect Vented Heating Appliances Don't Use a Barometric Damperĭirect-vented heating appliances that vent flue gases outside without using a chimney are typically operated by a power vent fan in or at the heating appliance.This article catalogs and describes all types of air and draft regulation devices used in buildings where control of heating appliances is needed. Dampers and Dampeners, types, definitions of flue damper, duct damper, fire damper, a draft regulator& other dampers or dampeners We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. We include photographs of each type of damper or dampener used in buildings or in building mechanical systems and we provide links to in-depth articles describing the choices, installation, inspection, troubleshooting and repair of all types of building and HVAC system air controls, dampers and dampeners such as automatic and barometric flue dampers used on heating equipment, coal stove, pellet stove, woodstove draft controls, draft inducer fans, HVAC duct air flow controls (manual register controls, duct dampers, zone dampers, automatic fire dampers, vibration dampeners), fireplace dampers, and fresh air supply dampers and controls. This article defines and describes barometric dampers, draft regulators, automatic flue dampers, draft inducers, zone dampers, HVAC supply register controls, fire dampers, automatic fire and smoke dampers, fireplace dampers, and fresh air inlet dampers and controls. Types & definitions of HVAC duct & flue dampers, vibration dampeners, and fire dampers found in buildings. We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest.
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