Rinnai RL75e REU-VC2528WD-US User Manual

DirectVentTanklessWaterHeater
InstallaƟonandOperaƟonManual
— Donotstoreorusegasolineorotherflammablevaporsandliquidsinthevicinityofthisoranyother
appliance.
— WHATTODOIFYOUSMELLGAS
x Donottrytolightanyappliance.
x Donottouchanyelectricalswitch;donotuseanyphoneinyourbuilding.
x Immediatelycallyourgassupplierfromaneighbor’sphone.Followthegassupplier’sinstrucƟons.
x Ifyoucannotreachyourgassupplier,callthefiredepartment.
— InstallaƟonandservicemustbeperformedbyalicensedprofessional.
ThisenƟremanualmustbeleŌfortheconsumer.Theconsumermustreadand
refertothismanualforproperoperaƟonandtomaintainthewaterheater.
IftheinformaƟonintheseinstrucƟonsisnotfollowedexactly,afireorexplosion
mayresultcausingpropertydamage,personalinjuryordeath.
WARNING
READALLOFTHEINSTRUCTIONSTHOROUGHLYBEFOREINSTALLINGOROPERATINGTHISWATERHEATER.
ThismanualprovidesinformaƟonontheinstallaƟon,operaƟon,andmaintenanceofthewaterheater.Forproper
operaƟonandsafety,itisimportanttofollowtheinstrucƟonsandadheretothesafetyprecauƟons.
Alicensedprofessionalmustinstallthewaterheater accordingtotheexact
instrucƟonsonpages4Ͳ30.
TheconsumermustreadtheenƟremanualtoproperlyoperatethewaterheaterandtohaveregularmaintenance
performed.
ANSZ21.10.3භCSA4.3
FORINDOORAPPLICATIONSONLY
RL75i.....................REUͲVC2528FFUDͲUS
 REUͲVC2528FFUD(A)ͲUS
RL94i.....................REUͲVC2837FFUDͲUS
FOROUTDOORAPPLICATIONSONLY
RL75e....................REUͲVC2528WDͲUS
 REUͲVC2528WD(A)ͲUS
RL94e....................REUͲVC2837WDͲUS

Rinnai RL75e REU-VC2528WD-US Specifications

General

Type	Tankless
Fuel Type	Natural Gas
Flow Rate	7.5 GPM
Energy Factor	0.82
Installation Location	Indoor
Weight	46 lbs
Maximum BTU	180, 000 BTU
Ignition Type	Electronic
Venting	Direct Vent
Warranty	12-year on heat exchanger, 5-year on parts, 1-year on labor

Summary

Safety and Operation

Operation Instructions

Key information about the water heater and emergency procedures for gas leaks.

Safe Operation Guidelines

Step-by-step instructions for safely starting, operating, and stopping the water heater.

Using the Temperature Controller

Guide to operating the standard MC-91-2 temperature controller.

Setting the Water Temperature

Procedure for adjusting the water temperature and important safety notices.

Installation Procedures

Plumbing Installation Requirements

Details on pressure relief valve, isolation valves, and general piping requirements.

Isolation Valves and Pressure Relief Valve Installation

Specific instructions for installing isolation valves and the pressure relief valve.

Gas Supply Installation

Critical safety warnings and general instructions for installing the gas supply.

Electrical Connections and Settings

Instructions for connecting electricity, adjusting DIP switches for altitude and vent length.

Temperature Controller Installation

Details on controller types, wiring configurations, and cable length limitations.

Final Installation Checklist

Comprehensive checklist to ensure all installation steps and requirements are met.

Technical Data and Features

Technical Data and Specifications

Detailed specifications including gas consumption, water capacity, temperature settings, and electrical data.

Recirculation Mode Features

Maintenance and Troubleshooting

Diagnostic Codes and Remedies

List of diagnostic codes, their definitions, and recommended remedies for issues.

Required Maintenance

Flushing the Heat Exchanger