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A direct vent fireplace is a prefabricated metal fireplace that employs a direct-vent combustion system. "Direct vent" refers to a sealed-combustion system in which air for combustion is drawn from the outdoors, and waste combustion gasses are exhausted to the outdoors. "Direct vent" does not simply mean that all gasses from combustion are ...
Direct vent fireplaces are fueled by either liquid propane or natural gas. They are completely sealed from the area that is heated, and vent all exhaust gasses to the exterior of the structure. Chimney and flue types: Masonry (brick or stone fireplaces and chimneys) with or without tile-lined flue. Reinforced concrete chimneys. Fundamental ...
The fireplace insert was improved upon by David Rittenhouse who added a pipe bent at 90 degrees to the back of the stove which was meant to direct the smoke out of a chimney. [citation needed] In 1796, Sir Benjamin Thompson, also known as Count Rumford, introduced a revolutionary fireplace design that influenced fireplaces well into the 1900s ...
Their product lines include gas, electric, and wood fireplaces for both indoor and outdoor settings. [4] They also produce additional products and accessories such as fireplace inserts, free-standing stoves, gas log sets, and venting products. [5]
HD-5 is a specification that establishes a maximum concentration of 5% propene in propane. Propane and other LP gas specifications are established in ASTM D-1835. [46] All propane fuels include an odorant, almost always ethanethiol, so that the gas can be smelled easily in case of a leak. Propane as HD-5 was originally intended for use as ...
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