www.fmiproducts.com
124531-01C
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AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater shall
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National Fuel Gas Code, ANSI
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their homes as airtight as possible.
While it is good to make your home energy
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air must enter your home. All fuel-burning ap-
pliances need fresh air for proper combustion
and ventilation.
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venting of vented fuel-burning appliances.
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ational Fuel
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you classify your space and provide adequate
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may provide enough fresh air for combustion
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additional fresh air.
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construction where:
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If your home meets all of the three criteria
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Determining
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gregate input rating of all appliances installed
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of the aggregate input rating of all appliances
installed in that space. Rooms communicating
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* Adjoining rooms are communicating only if
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DETERMINING FRESH-AIR FLOW
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