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  2. Tips for troubleshooting water heater issues - AOL

    www.aol.com/tips-troubleshooting-water-heater...

    Your gas hot water heater isn't a toy. It’s a highly pressurized machine. Always turn off the gas and power before working on your heater. And if there’s a standing pool of water, shut off the ...

  3. Fireman's switch - Wikipedia

    en.wikipedia.org/wiki/Fireman's_switch

    A fireman's switch is a specialized switch that allows firefighters to quickly disconnect power from high voltage devices that may pose a danger in the event of an emergency. [1] According to the Institution of Electrical Engineers , any electrical device operating at over 1,000 Volts AC or 1,500 volts DC , must be equipped with the switch.

  4. Heat and smoke vent - Wikipedia

    en.wikipedia.org/wiki/Heat_and_smoke_vent

    The majority of guidance available for design of heat and smoke building vents installed in buildings is restricted to nonsprinklered, single-story buildings. [4] This is partly a historical consequence of the installation of heat and smoke vents following the August 1953 General Motors, Livonia, MI major fire in a nonsprinklered manufacturing facility which effectively stopped the production ...

  5. Ventilation (firefighting) - Wikipedia

    en.wikipedia.org/wiki/Ventilation_(firefighting)

    Ventilation is a part of structural firefighting tactics, and involves the expulsion of heat and smoke from a burning building, permitting the firefighters to more easily and safely find trapped individuals and attack the fire. It is frequently performed from the outside of a burning building while the fire is being extinguished on the inside.

  6. 11 Reasons Why Your Water Is Only Lukewarm - AOL

    www.aol.com/11-reasons-why-water-only-171300843.html

    This type of water heater could be 24% to 34% more energy-efficient than a traditional water heater, according to the Department of Energy. Tankless water heaters can also save space, as they don ...

  7. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    Two conflicting safety issues affect water heater temperature—the risk of scalding from excessively hot water greater than 55 °C (131 °F), and the risk of incubating bacteria colonies, particularly Legionella, in water that is not hot enough to kill them. Both risks are potentially life-threatening and are balanced by setting the water ...

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