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  2. Duct leakage testing - Wikipedia

    en.wikipedia.org/wiki/Duct_leakage_testing

    A third test method to determine if ductwork is leaking to the outside is to use a pressure pan, which is a register cover with a pressure tap for a hose connection. With the house pressurized (or depressurized) to 50 Pa (-50 Pa) using a blower door, a pressure gauge is attached to the pressure pan by means of a hose.

  3. Water damage - Wikipedia

    en.wikipedia.org/wiki/Water_damage

    Interior of part of a damaged home in New Orleans after Hurricane Katrina Family photographs damaged by flooding A smaller and more minor water spot caused by rainwater leaking through a roof. Water damage describes various possible losses caused by water intruding where it will enable attack of a material or system by destructive processes ...

  4. Thermostat - Wikipedia

    en.wikipedia.org/wiki/Thermostat

    A thermostat exerts control by switching heating or cooling devices on or off, or by regulating the flow of a heat transfer fluid as needed, to maintain the correct temperature. A thermostat can often be the main control unit for a heating or cooling system, in applications ranging from ambient air control to automotive coolant control.

  5. 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.

  6. Capacitor plague - Wikipedia

    en.wikipedia.org/wiki/Capacitor_plague

    Failed aluminium electrolytic capacitors with open vents in the top of the can, and visible dried electrolyte residue (reddish-brown color) The capacitor plague was a problem related to a higher-than-expected failure rate of non-solid aluminium electrolytic capacitors between 1999 and 2007, especially those from some Taiwanese manufacturers, [1] [2] due to faulty electrolyte composition that ...

  7. List of aquarium diseases - Wikipedia

    en.wikipedia.org/wiki/List_of_aquarium_diseases

    Improve water quality. Aquarium salt baths can treat mild cases. Use anti-fungal meds if visible film/spores/tufts. Use gram-negative antibiotics otherwise. Columnaris: Flexibacter bacteria: All: Cottony growth near mouth and or patches of grayish-white film on the body or fins. Improve water conditions.

  8. The Light of the World (painting) - Wikipedia

    en.wikipedia.org/wiki/The_Light_of_the_World...

    The Light of the World (Keble College version). The Light of the World (1851–1854) is an allegorical painting by the English Pre-Raphaelite artist William Holman Hunt (1827–1910) representing the figure of Jesus preparing to knock on an overgrown and long-unopened door, illustrating Revelation 3:20: "Behold, I stand at the door and knock; if any man hear My voice, and open the door, I will ...

  9. Hunner's ulcer - Wikipedia

    en.wikipedia.org/wiki/Hunner's_ulcer

    Many patients choose to live with the ulcers and treat the symptoms associated with them through bladder instillations and/or pain medication/therapy. Patients with interstitial cystitis may find relief by modifying their diet to remove foods and beverages that trigger symptoms: caffeinated beverages, particularly coffee (regular and decaf ...