Showing results 1 - 50 of 101
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Individual ventilation systems for each dwelling unit in a multifamily building will require large numbers of penetrations in exterior facades
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A central fan-integrated supply system uses a fresh air intake ducted to the home's central furnace or air handler unit to supply fresh air throughout the home
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A central rooftop fan supplies outdoor air to all floors of a multistory multifamily building, pressurizing the corridors and providing make-up air for the elevator shaft, which is depressurized by an exhaust fan.
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A central rooftop fan supplies preconditioned outdoor air to every floor of a multistory multifamily building, pressurizing the corridors and providing make-up air for the elevator shaft, which is depressurized by an exhaust fan.
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A direct-vent sealed-combustion fireplace takes its combustion air directly from outside through a dedicated air inlet and vents combustion products directly outside
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A direct-vent sealed-combustion furnace has dedicated pipes for combustion air and exhaust
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A fresh air inlet is ducted to the return side of the home’s central air handler; a motorized damper and electronic controls help balance the flow of fresh incoming air with controlled exhaust to meet ventilation requirements
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A passive air inlet is one approach to providing makeup air when operating an exhaust-only ventilation system
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A passive flow hood is used to measure the flow rate of air that passes through a ceiling-mounted exhaust fan
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A ventilation controller with a manual override is located on a central air handler fan that is located in an accessible location
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An energy recovery ventilator (ERV) transfers both heat and moisture between incoming and outgoing streams of air
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Balanced ventilation dominates ventilation specifications by Zero Energy Ready Home builders
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Because flue temperatures are cool, intake and exhaust ducts on a Category 4 direct-vent sealed-combustion condensing furnace can be made of PVC
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Central-fan-integrated supply ventilation with exhaust fans for intermittently balanced whole-house ventilation
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Continuously-operating ventilation & exhaust fans include readily accessible override controls
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Ensure that attached garages in multifamily buildings are well-ventilated to reduce the presence of airborne contaminants in the garage and occupied space
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Exhaust fan installed but in wrong direction causing excessive bend and duct is uninsulated
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Fans supply outdoor air tempered by indoor corridor air to the corridors of a multistory multifamily building, pressurizing the corridors and providing make-up air for the elevator shaft, which is depressurized by an exhaust fan.
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For fireplaces that are not mechanically drafted or direct-vented to outdoors, total net rated exhaust flow of the two largest exhaust fans is .15 CFM per 100 sq. ft. of occupiable space when at full capacity
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Formula 4.2 from ASHRAE 62.2-2010 for fan flow rate required to achieve an effective ventilation rate
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Furnaces, boilers, and water heaters located within the home’s pressure boundary are mechanically drafted or direct-vented
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If integrating an ERV/HRV with the heating/cooling duct system, add dedicated ducts for either the supply or return side to prevent short-circuiting of air distribution
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In this dwelling unit ventilation configuration, a forced air system provides outside air at the same rate as the air being exhausted from the bathroom fan; local kitchen exhaust is provided by a range hood with a dedicated makeup air intake
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In this ventilation configuration for a multifamily building, outside air enters through a dedicated outdoor air system (DOAS), and inside air exits the space through bathroom and kitchen exhaust fans
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In this ventilation configuration, an air handler provides outside air at the same rate as the air being exhausted from a bathroom fan; local kitchen exhaust has a dedicated makeup air intake; dehumidification is provided separately
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Lower-cost local ERVs are usually installed in a ceiling to supply outdoor air to and exhaust air from the room in which they are located
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National Fuel Gas Code (NFPA 2012) identifies four categories for combustion furnaces and water heaters based on combustion type (sealed or unsealed) and vent pipe temperature
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Preconditioned outdoor air is supplied to the corridors on each floor of a multistory multifamily building, pressurizing the corridors and providing make-up air for the elevator shaft, which is depressurized by an exhaust fan.