Installation ManualCONDENSING TANKLESS GAS WATER HEATERWARNING– Do not store or use gasoline or other inflammable vapors and liquids in the vicinity of this or any otherappliance.– WHAT TO DO IF YOU SMELL GAS• Do not try to light any appliance.• Do not touch any electrical switch; do not use any phone in your building.• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.• If you cannot reach your gas supplier, call the fire department.– Installation and service must be performed by a qualified installer, service agency or the gas supplier.If the information in these instructions is not followed exactly, a fire or explosion may result,causing property damage, personal injury, or death.Thank you for purchasing this Noritz Tankless Gas Water Heater.Before using, please:Read this guide completely for operation instructions.Completely fill out the warranty registration card (included separately) and mail the detachable portion to NoritzAmerica Corporation. Keep this guide (and the remainder of the warranty registration card) whereit can be found whenever necessary.Installation must conform with local codes, or in the absence of local codes, the National Fuel Gas Code, ANSIZ223.1/NFPA 54. Noritz America reserves the right to discontinue, or change at any time, the designs and/orspecifications of its products without notice.NRCP1112-DV / NRCP982-DV (Eco TOUGH)• Natural Gas(NG) / Liquid Propane Gas (LP)Models