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A sail switch, vane switch or flow switch is a mechanical switch that is actuated on or off in response to the flow or non-flow of a fluid such as air or water. [1] A sail switch typically operates through the use of a paddle or a diaphragm which gets displaced due to the force of fluid or air moving past it.
In natural gas furnaces, water heaters, and room heating systems, a safety cut-off switch is normally included so that the gas supply to the pilot and heating system is shut off by an electrically operated valve if the pilot light goes out. This cut-off switch usually detects the pilot light in one of several ways: A flame rectification device. [2]
Direct electric resistance tank water heaters are not included in the Energy Star program; however, the Energy Star program does include electric heat pump units with energy factors of 200% or higher. Tankless gas water heaters (as of 2015) must have an energy factor of 90% or higher for Energy Star qualification.
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The South Wind Heater was invented by Canadian Harry J. McCollum, [1] who demonstrated his invention to the Stewart-Warner company in 1934. Production at the Chicago firm began a short time later, [ 2 ] with more than 3 million units installed in automobiles, aircraft, and military vehicles by 1948. [ 1 ]
Nearly four months after he announced he was cancer-free, Chicago Cubs Hall of Famer Ryne Sandberg announced that the cancer has spread to other organs in his body and he is set for more treatment.
A pregnant woman is recovering in the hospital after she was stabbed multiple times by a pizza delivery driver over the size of her tip, according to reports. The incident happened on Sunday, Dec ...
When it comes to managing cholesterol, the foods we eat can play a significant role in our overall heart health. But there’s one protein that stands out as a true cholesterol-lowering powerhouse ...