— Do not store or use gasoline or other flammable vapors andliquids in the vicinity of this or any other appliance.— 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 inyour 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 firedepartment.— Installation and service must be performed by a qualifiedinstaller, service agency or the gas supplier.Operation and Installation ManualINSTALLER: Leave this manual with the appliance.CONSUMER: Retain this manual for future reference.Table of Contents ..................... 2Consumer Safety Information ... 4Operating Instructions............... 5Maintenance ........................... 12Error Codes ............................ 13Installation Instructions ........... 17Consumer Support.................. 46French Version ....................... 48R75LSi ................ REU-VB2528FFUD-USR94LSi ................ REU-VB2735FFUD-USR98LSi ................ REU-VA3237FFU-USR98LSi-ASME .... REU-VA3237FFU-ASMEDirect Vent Tankless Water HeaterFOR INDOOR APPLICATIONS ONLYRegister your product at www.rinnairegistration.com orcall 1-866-RINNAI1 (746-6241)ANS Z21.10.3●CSA 4.3R75LSiR94LSiR98LSiR98LSi-ASMEIf the information in these instructions is notfollowed exactly, a fire or explosion mayresult causing property damage, personal injury or death.WARNINGThe VB series (R75LSi, and R94LSi) are certified forinstallation in manufactured (mobile) homes.