Rinnai Water Heater Installation and Operation Manuals for RL75i and RL94i

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The VB series (RL75i, and RL94i) are certified for installation in manufactured (mobile) homes.

Direct Vent Tankless Water Heater

Operation and Installation Manual

RL75i	REU-VB2528FFUD-US
RL94i	REU-VB2735FFUD-US
R98LSi	REU-VA3237FFU-US
R98LSi-ASME ....	REU-VA3237FFU-ASME

FOR INDOOR APPLICATIONS ONLY

Table of Contents	2
Consumer Safety Information ...	4
Operating Instructions	6
Maintenance	11
Error Codes	12
Installation Instructions	16
Consumer Support	44
French Version	47

WARNING If the information in these instructions is not followed exactly, a fire or explosion may

result causing property damage, personal injury or death.

ANS Z21.10.3

●

CSA 4.3

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Contents REU-VB2528FFUD-US Table of Contents RL75i RL94i R98LSi SpecificationsSafety Definitions Consumer Safety InformationSafety Behaviors and Practices Safety Features Description of OperationMC-91-1US & MCC-91-1US Temperature ControllerFeatures Features Available on Temperature ControllersOperating Instructions MC-91 MCC-91 MC-100 BC-100 MC-502 DescriptionTemperature Controller Settings How to Set the TemperatureModel Temperature Settings Available ºF Setting the Sound Volume Voice Prompt Temperature Options Without a Temperature ControllerRe-setting the Maximum Temperature RL75 and RL94 only MCC-91 Temperature ControllerSetting the Water Volume Using the Water Smart / Bath Fill FunctionOverview Setting the Clock Setting Controller to MuteFilling the Tub Models MC-91 and MCC-91Maintenance Code Fault Remedy Error CodesCode Accessing Operating Information Trouble Shooting for Common IssuesWater Quality Circulating Pump Flushing the Heat Exchanger Error Code LC orGeneral Instructions Installation InstructionsAttachment of the Water Heater Clearances from ApplianceGas Piping Electrical ConnectionGeneral Instructions Pipe Sizing Procedure Example Pressure Relief Valve Installation Instructions Isolation Valves Installation InstructionsPressure Relief Valve Maintenance Water PipingPressure Relief Valve Requirements Piping RequirementsFreeze Protection Freeze Protection When the water heater or external piping has frozenManual draining of the water heater KEY Freeze Protection PipingRinnai Water Heater Recommended Piping for Basic InstallationFor this application Recommended Piping for Circulation SystemsIntake / Exhaust Guidelines Venting InstructionsCondensate Maximum Vent Length Manufacturer Product Parts Vent ProductsFlue Terminal Clearances ANS Z21.10.3, CSA Description Canadian Installations US InstallationsInside Corner Additional Clearances Vent TerminalFlue Installation Concentric Venting RL75i, RL94i Air Intake Assembly Flue Installation R98LSi, R98LSi-ASMEExhaust Pipe Assembly Venting Clearances to CombustiblesVertical Terminations Horizontal with Concentric TerminationHigh Altitude Installations Connecting Multiple Water HeatersNumber Connected Accessories Necessary Water Heaters GuidelinesCanada only Configurations Temperature Controller InstallationLocation Cable Lengths and SizeOutline of Remote Mounting the ControllerOperating Instructions For Your Safety Read Before OperatingPressure Drop Curve Technical DataOutlet Flow Data Replacement Temperature SettingSpace Heating PumpsRL75i, RL94i R98LSi, R98LSi-ASME DimensionsLadder Diagram for RL75i and RL94i HOT Ladder Diagram for R98LSi and R98LSi-ASMELimited Warranty Warranty InformationConsumer Support What will Rinnai do? Important In the State of Massachusetts 248 CMR 4.00 State RegulationsInstructions dutilisation Instructions d’installationTemp. d’eau Instructions dutilisationOptions de température sans contrôleur à distance Plages de température avec un contrôleur de températureModel Plages de température disponible ºF Nettoyage EntretienInstructions générales Fixation du chauffe-eau Écartements par rapport à lappareilTuyauterie de gaz Installation à altitude élevéeInstructions générales Valve à Bille / Valve de dégagement de pression RL75i, RL94i Tuyauterie deauSoupape de sûreté Qualité de leauLégende Tuyauterie recommandée pour installation de baseConsignes pour aspiration/évacuation Instructions de ventilationCondensat 12.5 m 10.7 m Longueur maximum de ventilationConstructeur Produit Pièces Produits de ventilationHorizontale Nest PAS Permise Espacements pour terminaison de cheminée ANS Z21.10.3, CSAInstallation de conduit de cheminée RL75i, RL94i Ensemble de prise dair Installation de conduit de cheminée R98LSi, R98LSi-ASMEMontage du tuyau dévacuation Terminaisons horizontalesTerminaisons verticales Terminaison horizontale concentriqueVanneMa ualmanuelleValve Instructions dutilisationPhase Diagramme en escalier RL75i, RL94iPhase TRE NEU RAL Diagramme en escalier R98LSi, R98LSiASMEInformations sur la garantie Support à la clientèleQuest-ce qui est couvert ? Combien de temps dure la couverture ?Que fait Rinnai pour exercer la garantie ? VB Series Indoor LS Manual VB Series Indoor LS Manual VB Series Indoor LS Manual VB2528FFU VB2735FFU VA3237FFU

REU-VB2528FFUD-US

REU-VA3237FFU-US

REU-VA3237FFU-ASME

FOR INDOOR APPLICATIONS ONLY