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  2. Direct vent fireplace - Wikipedia

    en.wikipedia.org/wiki/Direct_vent_fireplace

    To begin the operation of the fireplace unit, the user must turn on the gas supply and ignite the burners. Once this is done, the unit will operate completely autonomously until the gas supply to the burners is shut off. While in operation, convection will cause the hot air in the firebox to rise to the top of the firebox. As the amount of hot ...

  3. Flame supervision device - Wikipedia

    en.wikipedia.org/wiki/Flame_supervision_device

    For gas appliances, a flame supervision device (FSD) – alternative name: flame failure device (FFD) – is a general term for any device designed to stop flammable gas going to the burner of a gas appliance if the flame is extinguished. This is to prevent a dangerous buildup of gas within the appliance, its chimney or the room. [1]

  4. ASHRAE Handbook - Wikipedia

    en.wikipedia.org/wiki/ASHRAE_Handbook

    The ASHRAE Handbook is the four-volume flagship publication of the nonprofit technical organization ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers [a]).

  5. Heating, ventilation, and air conditioning - Wikipedia

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

    Rooftop HVAC unit with view of fresh-air intake vent Ventilation duct with outlet diffuser vent. These are installed throughout a building to move air in or out of rooms. In the middle is a damper to open and close the vent to allow more or less air to enter the space. The control circuit in a household HVAC installation.

  6. How safe is your gas stove? Here's what a new study shows. - AOL

    www.aol.com/lifestyle/safe-gas-stove-heres-study...

    “The concentrations we measure from gas and propane stoves lead to dangerous levels within an hour of lighting a stove and stay that way for hours after stoves are off — not just in kitchens ...

  7. Gas venting - Wikipedia

    en.wikipedia.org/wiki/Gas_venting

    A gas pipeline compressor station. Gas is vented by design from the seals of some gas compressor equipment. In gas fields, acquiring non-associated petroleum gas (i.e. another form of raw natural gas) is the primary financial objective, and very little is unwanted compared to the gas produced in oil fields or coal mines.

  8. Gas stove debate reignites as Energy Department ... - AOL

    www.aol.com/gas-stove-debate-reignites-energy...

    The Energy Department put the gas stove debate on the front burner again Wednesday by proposing new efficiency standards for consumer cooking appliances.. The proposal comes just weeks after a ...

  9. What’s going on with WA gas stoves? Here are facts behind ...

    www.aol.com/going-wa-gas-stoves-facts-175830987.html

    Questions over gas stoves have gained media traction nationwide in recent weeks. The appliance has been linked to asthma cases in children and disproportionately impacts the health of low-income ...