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Venting—These heaters are designed to be vented in accordance with National Fuel Gas Code ANSI-Z223.1 and must therefore be connected to a gas vent, chimney or single-wall metal pipe venting system that is engineered and constructed to develop a positive flow adequate to remove flue gases to the outside atmosphere
WARRANTY INFORMATION
The warranty for Cozy Heaters is VOID unless the unit is installed by a licensed contractor. Any request for warranty assistance must be accompanied by a copy of the invoice from the installer. Any replacement parts must also be installed by a licensed contractor. | 
