Rinnai REU-VC2837W-US User Manual

Direct Vent Tankless Water Heater
Installaon and Operaon Manual
— Do not store or use gasoline or other ammable vapors and liquids 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 in your building.
 Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instrucons.
 If you cannot reach your gas supplier, call the re department.
— Installaon and service must be performed by a licensed professional.
This enre manual must be le for the consumer. The consumer must read and
refer to this manual for proper operaon and to maintain the water heater.
If the informaon in these instrucons is not followed exactly, a re 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 informaon on the installaon, operaon, and maintenance of the water heater. For proper
operaon and safety, it is important to follow the instrucons and adhere to the safety precauons.
A licensed professional must install the water heater according to the exact instrucons on pages 4-27.
The consumer must read the enre manual to properly operate the water heater and to have regular maintenance
performed.
ANS Z21.10.3 ● CSA 4.3
FOR INDOOR APPLICATIONS ONLY
V94i ...................... REU-VC2837FFU-US
V94Xi .................... REU-VC2737FFU-US
V75i ...................... REU-VC2528FFU-US
V65i ...................... REU-VC2025FFU-US
FOR OUTDOOR APPLICATIONS ONLY
V94e ..................... REU-VC2837W-US
V75e ..................... REU-VC2528W-US
V65e ..................... REU-VC2025W-US
SANITATION
Low Lead Content
NSF/ANSI 372
C US

Rinnai REU-VC2837W-US Specifications

General

Type	Tankless Water Heater
Fuel Type	Natural Gas
Max BTU	199, 000 BTU
Weight	45 lbs
Energy Factor	0.82
Gas Type	Natural Gas
Maximum BTU Input	199, 000 BTU
Ignition Type	Electronic
Venting	Direct Vent
Minimum BTU	15, 000 BTU
Warranty	12 years

Summary

Safety Information

Safety Definitions

Explains hazard symbols like Danger, Warning, Caution.

Safety Practices

Guidelines for safe operation, maintenance, and hazard prevention.

Installation Instructions

Installer Qualifications

Skills and training required for licensed professionals.

General Installation Guidelines

Do's and don'ts for proper installation procedures.

Prepare for Installation

Terminal Clearances

Plumbing Installation Requirements

Details requirements for pressure relief valves, isolation valves, and piping.

Gas Supply Installation

Critical safety and procedural guidelines for gas supply installation.

Electrical Connections

Electrical connection requirements and safety precautions.

Temperature Controller Installation

Final Checklist

Comprehensive checklist to ensure all installation steps are correctly completed.

Freeze Protection

Technical Specifications

Model Specifications

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

Operation Instructions

Key Operation Facts

Key information and safety warnings before operating the water heater.

Safe Operation Guidelines

Step-by-step guide for safe startup and operation of the water heater.

Setting Water Temperature

Diagnostic Codes

Troubleshooting Guide

Lists diagnostic codes, their definitions, and recommended remedies.

Required Maintenance

Cleaning and Servicing

Instructions for cleaning internal components, burners, filters, and motors.

Flushing the Heat Exchanger

Heat Exchanger Cleaning Procedure

Detailed steps for flushing the heat exchanger with vinegar to remove scale.

Consumer Warranty

Limited Warranty Details