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  2. Zone valve - Wikipedia

    en.wikipedia.org/wiki/Zone_valve

    Lower total cost of ownership when zone valve failure and repair costs are taken into account. More robust and reliable system. Simple mechanical and control design ("SPST thermostats") Redundancy: If one zone pump fails, the others can remain working; Far superior method of linking multiple heat sources. Such as gas and solid fuel in one system.

  3. Fire alarm control panel - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_control_panel

    Coded panels were the earliest type of central fire alarm control, and were made during the 1800s to the 1970s. A coded panel is similar in many ways to a modern conventional panel (described below), except each zone was connected to its own code wheel, which, depending on the way the panel was set up, would either do sets of four rounds of code until the initiating pull station was reset ...

  4. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    The control circuit in a household HVAC installation. The wires connecting to the blue terminal block on the upper-right of the board lead to the thermostat. The fan enclosure is directly behind the board, and the filters can be seen at the top. The safety interlock switch is at the bottom left. In the lower middle is the capacitor.

  5. Wiring diagram - Wikipedia

    en.wikipedia.org/wiki/Wiring_diagram

    An automotive wiring diagram, showing useful information such as crimp connection locations and wire colors. These details may not be so easily found on a more schematic drawing. A wiring diagram is a simplified conventional pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the ...

  6. Circuit diagram - Wikipedia

    en.wikipedia.org/wiki/Circuit_diagram

    A circuit diagram (or: wiring diagram, electrical diagram, elementary diagram, electronic schematic) is a graphical representation of an electrical circuit. A pictorial circuit diagram uses simple images of components, while a schematic diagram shows the components and interconnections of the circuit using standardized symbolic representations.

  7. 76ers rule rookie star Jared McCain out for the season ... - AOL

    www.aol.com/76ers-rule-rookie-star-jared...

    Philadelphia 76ers rookie Jared McCain will miss the rest of the season following left knee surgery last month on a torn meniscus. The 20-year-old McCain spent one season at Duke before the Sixers ...

  8. Groom Creates Spreadsheet Scoring System to Cut Down Wedding ...

    www.aol.com/groom-creates-spreadsheet-scoring...

    In a now-viral video on TikTok, bride-to-be Kate O'Neill explains how her fiancé Michael O'Malley developed an "insane but practical" way to cut down their wedding guest list

  9. 15 Healthy Christmas Cookies That Make the Nice List - AOL

    www.aol.com/15-healthy-christmas-cookies-nice...

    Almond-Raspberry Thumbprint Cookies. The raw almonds used in the dough provide a healthy dose of protein, fiber, and healthy fats. Those fats also make the end cookie tender and delicious ...

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