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2. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   Overheating is prevented by a safety switch called a limit controller or limit switch. This limit controller may shut the furnace off if the blower fails or if something is blocking the air flow. The heated air is then sent back through the home through supply ducts. In larger commercial applications, central heating is provided through an air ...

3. Air handler - Wikipedia

   en.wikipedia.org/wiki/Air_handler

   Air flow control (CAV or VAV air handlers) Zone control (single zone or multi zone air handlers) Fan location (draw-through or blow-through) Direction of outlet air flow (front, up, or down) Package model (horizontal or vertical) But, the first method is very usual in HVAC market. In fact, most of the company advertise their products by air ...

4. Furnace (central heating) - Wikipedia

   en.wikipedia.org/wiki/Furnace_(central_heating)

   Diagram of natural draft gas furnace, early 20th century. The first category of furnaces is natural draft, atmospheric burner furnaces. These furnaces consisted of cast-iron or riveted-steel heat exchangers built within an outer shell of brick, masonry, or steel. The heat exchangers were vented through brick or masonry chimneys.

5. Heating system - Wikipedia

   en.wikipedia.org/wiki/Heating_system

   A heating system is a mechanism for maintaining temperatures at an acceptable level; by using thermal energy within a home, office, or other dwelling. Typically, these systems are a crucial part of an HVAC (Heating, Ventilation, and Air Conditioning) system.

6. HVAC control system - Wikipedia

   en.wikipedia.org/wiki/HVAC_control_system

   HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. [1] Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken (e.g. start the ...

7. After uproar, Anthem Blue Cross reversing anesthesia time ...

   www.aol.com/uproar-anthem-blue-cross-reversing...

   Anthem Blue Cross Blue Shield said Thursday that the health insurance provider is reversing a policy that was set to go into effect in February that would have limited anesthesia coverage during ...

8. Joe Amabile says he 'almost snapped' Jenna Johnson's ... - AOL

   www.aol.com/lifestyle/joe-amabile-says-almost...

   Joe Amabile says he 'almost snapped' Jenna Johnson's neck on “Dancing With the Stars”: 'I almost killed you'

9. Anthony Richardson's future, Cowboys & Jets fixable ... - AOL

   www.aol.com/sports/anthony-richardsons-future...

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