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Marco - Fireplace: General Terms

This page gives you a glance to the world of Fireplace through its common terms.
BTU Unit to measure heat. Stand for "British Thermal Unit"
Gas, Firewood, Kerosene, Crude Oil. Fuel use to burn in a Fireplace.
Circulation Fun. A Fun installed in a Fireplace that help to heat a home by force the Hot air to circulate around.
CFM: A measure unit for air flow. Stand for Cubic Feet per Minute. Indication for the strength of the fun.
Wood Burning. Fireplace that use Firewood as fuel.
BVENT. Stove that needs to be vented up through the roof or into an existing chimney. In most cases, B-Vent appliances get their combustion air from inside the home.
DIRECTVENT.  Direct-Vent - These appliances use a double wall pipe system to pull outside air for combustion and to exhaust the flue gas back to the outside.
VENTFREE. A vent-free gas heating appliance operates without a chimney, flue or vent, so you can install one just about anywhere.
REALITY LOGS Artificial wood log that are placed in a Fireplace that is burning Gas Kerosene. It gives a looks and feel like a read wood. REALITYLOGS is a trademark of Martin Fireplace.
WOOD SURROUNDS. Refer to the frame around a Fireplace that is installed inside a wall.
Flame Pattern. Sophisticate Fireplace can control the way the flame looks. This gives a more realistic look. Realistic means "More real wood a-like..."
Beautiful glowing embers. "A Reality log set (fiber), with a realistic flame pattern and beautiful glowing embers, provides the incredible look of a true wood-burning fire"
Firebox. Refer to the place where the fire is burning.
Hidden Control Panel. A panel with all required controls of the Fireplace that is installed in a hidden place.
Standing Pilot. A small fire that is always burning and lit the main fire soon as the gas valve is opened.
Electronic Ignition. A more sophisticated Fireplace are electronically ignited by an Electronic Ignition units.
LPG: Liquefied Petroleum Gas a mixture of commercial propane and commercial butane. It also has minor quantities of other hydrocarbons such as ethane, methane along with other gases.
Oxygen Detection Safety-Pilot  
Fireplace Insert Refer to the "Firebox" - The metal part where the fire is burned in the Fireplace.
Fireplace Surround Refer to the design on the wall around the Fireplace.
Fireplace Chimney A Pipe that take the burned gases (Smoke) from the Fireplace to the outside.
AFUE (Annual Fuel Utilization Efficiency) Measurement for rating furnaces and wall heaters as an official heat source.
Regulator Usually it is a part of the combination valve. It reduces the pressure to the appropriate level for the type of gas used in the appliance.
Blue Flame Rectification Safety shut-off device. Proves the flame and the control center maintains the gas flow.
Burner Device for the final conveyance of gas or a mixture of gas and air to the combustion zone. The gas burners in gas burning appliances are made of either aluminized steel or stainless steel. The parts of the main burner include: the burner orifice, a mixing tube, and the burner head.
Burner Ports Holes in the burner.
Carbon Dioxide A gas which is product of combustion resulting when carbon units with sufficient oxygen to produce complete combustion. Carbon dioxide is a component of many natural gases.
Carbon Monoxide A poisonous, combustible gas formed by incomplete combustion of carbon or reduction of carbon dioxide.
Catalytic Combustor A device used on some wood burning Stove to reduce the temperature at which smoke is ignited.
Chimney One or more passageways, vertical or nearly so, for conveying flue gases or vent gases to the outside atmosphere. See also: gas vent, vent, and venting system.
Clearance The distance required by building and fire codes between stove, smoke pipe or chimney and combustible materials such as wood furniture or carpets. Clearances must be obeyed even if the combustible materials, such as wood furniture or carpets, are protected by noncombustible plaster or other masonry materials.
Creosote A very flammable by-product of combustion that can buildup within the smoke pipe and chimney and then ignite, causing "chimney-fire".
Decorative Front Fixed mesh screen front placed in front of glass panel for aesthetics and safety. Installed on all direct vent Fireplace.
Decorative Gas Appliance for Installation in a Vented Fireplace A self-contained, free-standing fuel-gas burning appliance designed for installation only in a vented fireplace and whose primary function lies in the aesthetic effect of the flame.
Decorative Vented Appliance A vented appliance whose only function lies in the aesthetic effect of the flames.
Direct Spark Ignition A type of electronic pilot ignition. It ignites the gas directly at the burner from a spark.
Direct Vent Appliance An appliance that draws combustion air from outdoors and exhausts its combustion products to the outdoors eliminating the need for a standard chimney system. A glass panel in direct vent units is critical to keeping the combustion system sealed from the home, maintaining high efficiency and indoor air quality.
Direct Vent Wall Furnace A system consisting of an appliance, combustion air and flue gas connections between the appliance and the outside atmosphere, and a vent cap supplied by the manufacturer and constructed so that all air for combustion is obtained from the outside atmosphere and all flue gases are discharged to the outside air.
Draft Hood/Draft Diverter A device built into an appliance or made a part of the flue or vent connector from an appliance, which is designed to (a) provide for the ready escape of the product of combustion (flue gas) from the combustion chamber in the event of no draft, back draft, of stoppage beyond the draft hood; (b) prevent a back draft from entering the combustion chamber of the appliance; (c) neutralize the effects of stack action of the chimney or gas vent upon the operation of the appliance.
Electronic Ignition System A device to light the burner or pilot that requires electrical current but not a match.
Emissions By-products of combustion vented out of the home.
EPA Regulations Government regulation of wood burning appliances mandating that products sold after July 1, 1992, emit no more than 4.1 grams of particulate matter per hour for catalytic-equipped units and no more than 7.5 grams for non-catalytic-equipped units.
Factory-Built Chimney A chimney composed of listed factory-built components (usually stainless steel and galvanized steel) that is easy to assemble to form the completed chimney. They conform to safety and building codes. They are air cooled or insulated. Designed to remove combustion by-products.
Firebacks Protect fireplace masonry and mortar, shielding them from extreme heat of the flames. Cast-iron firebacks store heat from the fire and radiate it into the room after the fire has died down. Firebacks work just as well in a modern gas fireplace as they do in a traditional wood burning one.
Fireplace Insert A type of decorative appliance consisting of an open-flame radiant-type appliance mounted in a decorative metal panel to cover the fireplace or mantel opening and having provisions for venting into the fireplace chimney.
Fire Stops Devices of noncombustible material that seal any openings separating floors so that smoke or fire can not penetrate from one level to another.
Flue Vent or chimney for a combustion device.
Freestanding Stove A heating appliance normally on legs or a pedestal that occupies an area roughly equal to that of an easy chair.
Flue Collar Ring on appliance designed for the attachment of the draft hood, vent connector or venting system, that determines the size of the vent.
Gas Cock Assembly Also called valve control, a part of the combination valve that is a multi-positioned and tapered valve. When in the "on" position, it allows for the flow of gas to the burner. In the "off" position, it shuts off the gas supply to the appliance.
Gas Log An open flame type appliance consisting of a metal frame or base supporting simulated logs.
Glass Doors Close off the opening of the hearth so heat from the central heating system does not escape up the chimney when the fireplace is not being used.
Hearth Traditionally refers to the floor of a fireplace on which a blaze is built. Today it is also used to refer to all the devices and equipment used in connection with the fireplace and stove industry.
Heat Shield A non-combustible protector used around appliances, smoke pipe or chimney.
Hot Surface Igniter A type of electronic ignition system.
Ignition Systems Devices that ignite the pilot burner and/or the main burner assembly.
Liquefied Petroleum Gas (LP gas, sometimes called LPG) Colorless, odorless and non-toxic gas. It is separated from wet natural gas, light crude oil and oil-refinery gases.
Manifold Pressure The amount of wc inches that can be supported by different types of gas: the manifold pressure for natural gas is 3.5" wc and for LP gas the manifold pressure is 11" wc.
Mantel An ornamental facing surrounding the fireplace or simply a shelf above a fireplace.
Metal Liner Used primarily with fireplace inserts and placed inside an existing chimney (usually masonry) to reduce the diameter of the flue for more rapid exit of smoke and combustion gases. Also used when an existing chimney is unlimited or deteriorating.
Natural Draft (B-vent) Appliance An appliance that takes in combustion air from the home and vents products of combustion outside of the home.
Natural Gas (NG) Colorless, highly flammable gas consisting mainly of methane. A highly popular gas because of its flammability and high energy value. This naturally occurring mixture of hydrocarbon and non-hydrocarbon gases is found in porous geologic formations beneath the earth's surface, often in association with petroleum.
Oxygen Depletion Sensing Device This device on a spill switch senses the lack of oxygen and shuts down the electrical flow, shutting off the appliance.
Piezo Starter Red button that places pressure on the crystal in the standing pilot system.
Pilot A small flame used to ignite the gas at the main burner.
Propane A liquefied petroleum gas (see LPG) containing more heat value than natural gas. It is colorless, odorless and non-toxic.
PSI Pounds per square inch.
Safety Pilots A safety shutoff, stops the flow of the gas to the appliance, and provides a heat source to ignite the main burner (often called standing pilot system). Safety pilot systems have three basic components: the pilot assembly, the thermocouple, and the electromagnetic power unit (EMU).
Seasoned Refers to fuel wood that has been allowed to dry before burning. Seasoning generally takes six to twelve months. Wood burns much easier when its moisture content has been reduced. Freshly cut wood contains over 20 percent water.
Spillage Process that occurs when flue gases cannot exit the vent system and back up into the dwelling. This usually creates a dangerous situation as incomplete combustion may result in the production of carbon monoxide.
Spill Switch Devices used to detect spillage of flue gas, but similar to high limit switches in that they are activated based on temperature.
Standing Pilot Ignition A means to light the main gas burner through the use of a standing pilot light.
Therm A unit of heating value equivalent to 100,000 British thermal units (BTUs).
Thermo Sensor Automatically turns blower on and off.
Unvented or Vent-Free An appliance that draws combustion air from inside the home. The appliance is designed to burn so efficiently that it eliminates the need for venting.
Vent-Free Gas appliance that has no need for a flue.
Vented Wall Furnace A self-contained vented appliance complete with grills or equivalent, designed for permanent attachment to the structure and furnishing heated air by gravity or fan.
Venting System A continuous open passageway from the flue collar or draft hood of a gas-burning appliance to the outside atmosphere for the purpose of removing flue or vent gas. It is usually composed of a vent or a chimney and vent connectors assembled to form the open passageway.
wc (water column) Measurement of pressure of gas. There are 28 wcs in one pound of PSI.
Wall Thermostat A heat sensitive electrical switch that maintains the temperature and controls the on-off action of the heat source. NOTE: thermostats should only be used with gas appliances that have been tested and listed for use with thermostats.

Fireplace Information: Fireplace Types  Fireplace terminology  Fireplace Fuel Types

   A History of the Fireplace  Fireplace Manufacturers

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