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  2. Rheem Manufacturing Company - Wikipedia

    en.wikipedia.org/wiki/Rheem_Manufacturing_Company

    www .rheem .com. Rheem Manufacturing Company is an American privately held manufacturer that produces residential and commercial water heaters and boilers, as well as heating, ventilating and air conditioning (HVAC) equipment. The company also produces and sells products under the Ruud brand name.

  3. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens. Alternatively, sirens may be used if necessary ...

  4. Pressure switch - Wikipedia

    en.wikipedia.org/wiki/Pressure_switch

    A pressure switch is a form of switch that operates an electrical contact when a certain set fluid pressure has been reached on its input. The switch may be designed to make contact either on pressure rise or on pressure fall. Pressure switches are widely used in industry to automatically supervise and control systems that use pressurized fluids.

  5. When red-hot isn't enough: New government heat risk ... - AOL

    www.aol.com/news/red-hot-isnt-enough-government...

    April 22, 2024 at 4:20 PM. WASHINGTON (AP) — Forget about red hot. A new color-coded heat warning system relies on magenta to alert Americans to the most dangerous conditions they may see this ...

  6. Syrets concentration camp - Wikipedia

    en.wikipedia.org/wiki/Syrets_concentration_camp

    The Kiev-West (in German sources) or Syrets (Ukrainian: Сирець) was a Nazi concentration camp or (arbeitserziehungslager – correctional labour camp) established in 1942 in Kyiv's western neighborhood of Syrets [], part of Kyiv since 1799.

  7. 2003 Chicago balcony collapse - Wikipedia

    en.wikipedia.org/wiki/2003_Chicago_balcony_collapse

    In 1998, a permit was issued to owner LG Properties to install furnaces, air conditioners and water heaters in the building, but not to build the balcony. The balcony jutted out eleven feet from the building, one foot farther than permitted by city codes, and had an area of 231 square feet (21.5 m 2 ), 81 square feet (7.5 m 2 ) larger than ...

  8. ISO 3864 - Wikipedia

    en.wikipedia.org/wiki/ISO_3864

    Domain. Safety signage design. Website. www .iso .org /standard /51021 .html. ISO 3864 specifies international standards for safety signs and markings in workplaces and public facilities. These labels are graphical, to overcome language barriers. [1] The standard is split into four parts.

  9. R-410A - Wikipedia

    en.wikipedia.org/wiki/R-410A

    R-410A. R-410A, sold under the trademarked names AZ-20, EcoFluor R410, Forane 410A, Genetron R410A, Puron, and Suva 410A, is a zeotropic but near- azeotropic mixture of difluoromethane (CH 2 F 2, called R-32) and pentafluoroethane (CHF 2 CF 3, called R-125) that is used as a refrigerant in air conditioning and heat pump applications.