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Rinnai REU-VA3237FFU installation manual Direct Vent Tankless Water Heater, R50LSi, R75LSi

Models: REU-VA3237FFU

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Direct Vent Tankless Water Heater

Operation and Installation Manual

R50LSi	REU-VA2019FFUD
R75LSi	REU-VA2528FFUD(A)
R94LSi	REU-VA2535FFUD
R98LSi	REU-VA3237FFU
R98LSi-ASME ....	REU-VA3237FFU-ASME

FOR INDOOR APPLICATIONS ONLY

Table of Contents	2
Consumer Safety Information ...	4
Operating Instructions	5
Maintenance	12
Error Codes	13
Installation Instructions	17
Consumer Support	42

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ANS Z21.10.3	—
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CSA 4.3

Page 1

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Rinnai REU-VA3237FFU installation manual Direct Vent Tankless Water Heater, Operation and Installation Manual, R50LSi

Contents

Direct Vent Tankless Water Heater Operation and Installation ManualR50LSi REU-VA2019FFUDR98LSi-ASME Table of ContentsR50LSi SpecificationsR75LSi R94LSiSafety Definitions Consumer Safety InformationSafety Behavior and Practices Safety FeaturesDescription of Operation Features Available on Remote ControllersOperating Instructions FeaturesMC-502RC-1US-S* Wireless Remote Controllers - ModelsMC-91-1US& MCC-91-1US MC-100V-1US BC-100V-1USRemote Controllers - Models Temperature Options Without a Remote Controller Setting the TemperatureDANGER Setting the Sound Volume Voice Prompt Temperature RangesSetting the Clock R50LSiSetting the Water Volume Using the Water Smart / Bath Fill FunctionOverview Using the Water Smart / Bath Fill Function Setting Controller to MuteFilling the Tub Cleaning MaintenanceRemote Controller Vent SystemError Code Table Error Codescode VA Series Indoor LS ManualAccessing Operating Information Trouble Shooting for Common IssuesWater Quality I don,t have any hot water when I open the tapH2 H1 Circulating Pump Flushing the Heat Exchange Error Code LC orRinnai Water Heater General Instructions Installation InstructionsAttachment of the Water Heater Clearances from Applianceto Combustibles to NonGas Piping Electrical ConnectionGeneral Instructions Gas Piping Pipe Sizing Procedure - ExampleGas Input of Rinnai water heater BTU / HR Cubic Feet per Hour CFH =General Instructions Water PipingPressure Relief Valve Freeze ProtectionRinnai Water Heater Freeze Protection PipingRinnai Water Heater Recommended Piping for Basic InstallationVA Series Indoor LS Manual Rinnai Water Heater Recommended Piping for Circulation SystemsFor this application Rinnai Water Heater Optional Piping for Circulation Systems3 Years On Heat Exchanger 3 Years On Parts For this applicationIntake / Exhaust Guidelines Venting InstructionsCondensate Maximum Vent Length Vent Products AREA WHERE BTERMINAL IS NOT PERMITTTED Flue Terminal Clearances ANS Z21.10.3 CSACanadian Installations US InstallationsINSIDE CORNER Additional Clearances - Vent TerminalVA Series Indoor LS Manual Securing ScrewAir Intake Assembly Flue Installation R98LSi, R98LSi-ASMEExhaust Pipe Assembly Venting Clearances to CombustiblesHorizontal with Concentric Termination Flue Installation R98LSi, R98LSi-ASMEVertical Terminations SLOPE INTAKE AND EXHAUSTConnecting Multiple Water Heaters High Altitude InstallationsGuidelines Configurations Remote Controller InstallationLocation Cable Lengths and Sizesecuring screw wiring hole securing screw Remote Controller InstallationREMOTE CONTROL CONNECTION TERMINALS REMOTE Outline of RemoteFOR YOUR SAFETY READ BEFORE OPERATING Operating InstructionsOPERATING INSTRUCTIONS TO TURN OFF GAS TO APPLIANCEPressure Drop Curve Technical DataOutlet Flow Data Temperature Setting Space HeatingReplacement PumpsDimensions Ladder Diagram Limited Warranty Warranty InformationConsumer Support How do I get service? Limited Warranty ContinuedWhat is not covered? What will Rinnai do?Direct Vent Heaters “Cool-to-the-Touch”cabinet

Direct Vent Tankless Water Heater

Operation and Installation Manual

R50LSi

REU-VA2019FFUD

R75LSi

REU-VA2528FFUD(A)

R94LSi

REU-VA2535FFUD

R98LSi

REU-VA3237FFU

R98LSi-ASME ....

REU-VA3237FFU-ASME

FOR INDOOR APPLICATIONS ONLY

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ANS Z21.10.3