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  2. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    The flow control valve, in conjunction with thermistors, maintains a stable temperature throughout the use of the unit. Safety: Tankless water heaters precisely control water temperature, which means dangerous temperature levels and spikes are less likely.

  3. Thermostatic radiator valve - Wikipedia

    en.wikipedia.org/wiki/Thermostatic_radiator_valve

    A thermostatic radiator valve on position 2 (15–17 °C) Installed thermostatic radiator valve with the adjustment wheel removed. A thermostatic radiator valve ( TRV) is a self-regulating valve fitted to hot water heating system radiator, to control the temperature of a room by changing the flow of hot water to the radiator.

  4. Thermostatic mixing valve - Wikipedia

    en.wikipedia.org/wiki/Thermostatic_mixing_valve

    Mengeneinstellung = Volume control. A thermostatic mixing valve (TMV) is a valve that blends hot water with cold water to ensure constant, safe shower and bath outlet temperatures to prevent scalding . The storage of water at high temperature removes one possible breeding ground for Legionella; the use of a thermostat, rather than a static ...

  5. How Much Does It Cost to Replace a Water Heater? - AOL

    www.aol.com/lifestyle/much-does-cost-replace...

    And while you can switch, this is largely determined by what kind of power your old system ran on. Gas water heaters cost between $600 and $2,700 to replace, for an average cost of about $1,650 ...

  6. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    A tempering valve mixes enough cold water with the hot water from the heater to keep the outgoing water temperature fixed at a more moderate temperature, often set to 50 °C (122 °F). Without a tempering valve, reduction of the water heater's setpoint temperature is the most direct way to reduce scalding.

  7. Zone valve - Wikipedia

    en.wikipedia.org/wiki/Zone_valve

    Zone valve. A zone valve is a specific type of valve used to control the flow of water or steam in a hydronic heating or cooling system. In the interest of improving efficiency and occupant comfort, such systems are commonly divided up into multiple zones. [1] For example, in a house, the main floor may be served by one heating zone while the ...

  8. HVAC control system - Wikipedia

    en.wikipedia.org/wiki/HVAC_control_system

    The unit controllers typically have analog and digital inputs that allow measurement of the variable (temperature, humidity, or pressure) and analog and digital outputs for control of the transport medium (hot/cold water and/or steam). Digital inputs are typically (dry) contacts from a control device, and analog inputs are typically a voltage ...

  9. Storage water heater - Wikipedia

    en.wikipedia.org/wiki/Storage_water_heater

    A storage water heater, or a hot water system ( HWS ), is a domestic water heating appliance that uses a hot water storage tank to maximize water heating capacity and provide instantaneous delivery of hot water. [1] Conventional storage water heaters use a variety of fuels, including natural gas, propane, fuel oil, and electricity.

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