FOR USE IN RESIDENTIAL ORMANUFACTURED HOME APPLICATIONS.Thank you for purchasing this Noritz Tankless Gas Water Heater.Before using:• Read this manual completely for operation instructions.• To ensure full coverage by the Noritz America CorporationLimited Warranty service, see the warranty registrationinformation (page 22), and then visit the Noritz website(www.noritz.com/warranty) to register your product.• Keep this manual where it can be found whenever necessarybecause the warranty registration information is included.(See page 22)Installation must conform with local codes, or in the absence oflocal codes, the National Fuel Gas Code, ANSI Z223.1 / NFPA 54- latest edition and/or the Natural Gas and Propane InstallationCode CSA B149.1 - latest edition.When applicable, installation must conform with theManufactured Home Construction and Safety Standard, Title24 CFR, Part 3280 or the Canadian Standard CAN/CSA-Z240 MHMobile Homes, Series M86.Noritz America reserves the right to discontinue, or changeat any time, the designs and/or specifications of its productswithout notice.NORITZ America CorporationOwner’s GuideCONDENSING TANKLESS GAS Water HeaterModels : EZ111DV (GQ-C3260WX-FF US)EZ98DV (GQ-C2860WX-FF US)• Do not store or usegasoline or otherflammable vapors andliquids in the vicinityof 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 anyphone in your building.- Immediately call your gas supplier from aneighbor’s phone. Follow the gas supplier’sinstructions.- If you cannot reach your gas supplier, call the firedepartment.• Installation and servicemust be performed bya qualified installer,service agency or thegas supplier.If the information in this manual is not followed exactly, a fire or explosion may resultcausing property damage, personal injury or death.WARNINGLow NOx Approved by SCAQMD14 ng/J or 20 ppm(Natural Gas Only)SBB8163-1Rev. 11/20