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Rinnai V75e User Manual

Rinnai V75e
80 pages
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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
V75i ....................... REU-VC2528FFU-US
V65i ....................... REU-VC2025FFU-US
FOR OUTDOOR APPLICATIONS ONLY
V75e ...................... REU-VC2528W-US
V65e ...................... REU-VC2025W-US

Table of Contents

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Rinnai V75e Specifications

General IconGeneral
BrandRinnai
ModelV75e
CategoryWater Heater
LanguageEnglish

Summary

Important Safety Information

Safety Definitions

Defines safety symbols like DANGER, WARNING, and CAUTION.

Safety Behaviors and Practices

Consumer and Installer Precautions

Outlines safety rules for gas handling, clearances, and general appliance safety.

Installation Instructions

Installer Qualifications

Details the skills and qualifications required for a licensed installer.

General Installation Guidelines

Covers essential do's, don'ts, codes, and grounding for installation.

Prepare for Installation

Parts, Tools, and Materials

Lists included parts, tools, and materials needed for the installation process.

Installation Location and Clearances

Determine Installation Location

Guides on site selection, considering clearances, water quality, and environment.

Vent Termination Clearances

Specifies required clearances for vent termination based on installation type.

Additional Unit Clearances

Details specific clearance requirements for different models and locations.

Venting and Condensate Management

Maximum Vent Length (Indoor)

Explains vent length limits and DIP switch settings for indoor models.

Flue Installation and Condensate

Illustrates flue termination, condensate collector use, and management for indoor units.

Plumbing and Gas Connections

Pressure Relief Valve Requirements

Covers requirements and installation of the pressure relief valve.

Piping and Water Supply

Covers isolation valves, piping requirements, and connecting the water supply.

Gas Supply Installation

Critical safety warnings and instructions for connecting the gas supply to the appliance.

Gas Pipe Sizing

Provides guidance and tables for sizing gas pipes based on type, pressure, and length.

Electrical Connections and Settings

Connect Electricity

Instructions for safely connecting the water heater to the electrical power supply.

Altitude and Vent Length Adjustments

How to set DIP switches for high altitude and vent length.

Gas and Electricity Checklist

A checklist to confirm correct gas and electrical connections and settings.

Temperature Controller Installation

Controller Setup and Location

Discusses controller setup options, maximum units, and ideal placement.

Mounting the Controller

Step-by-step instructions for physically mounting the temperature controller on a wall.

Final Installation Checklist

Installation Completion Checklist

A comprehensive checklist to ensure all installation steps and requirements are met.

Technical Data

Specifications Overview

Detailed technical specifications for various Rinnai models.

Unit Dimensions

Provides dimensional drawings and measurements for different water heater models.

Performance Curves

Illustrates pressure drop and water flow rates versus operating conditions.

Ladder Diagram

Electrical Ladder Diagram

A schematic electrical diagram showing the internal wiring and logic of the water heater.

Operation Instructions

Important Facts for Operation

Provides essential safety information and an overview for operating the water heater.

Safe Operation Procedures

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

Temperature Controller Usage

Explains the functions and settings for the temperature controller.

Setting Water Temperature

Guides users on adjusting water temperature and understanding related safety warnings.

Diagnostic Codes

Displaying Diagnostic Information

Instructions on how to access and view diagnostic information and error codes.

Troubleshooting Error Codes

A list of error codes, their definitions, and recommended solutions for troubleshooting.

Required Maintenance

Routine Cleaning Procedures

Instructions for cleaning internal components, filters, and the unit exterior.

Vent System and Motor Maintenance

Emphasizes vent inspection, motor cleaning, and checking for obstructions.

Scale Build-up and Prevention

Guidance on scale issues, diagnostic codes, and directs to flushing procedures.

Freeze Protection and Winterizing

Recommendations for protecting the unit from freezing and procedures for winterization.

Flushing the Heat Exchanger

Heat Exchanger Flushing Procedure

A detailed procedure for flushing the heat exchanger using vinegar to remove scale.

Manual Draining of the Water Heater

Draining for Storage or Freezing

Instructions for draining the water heater for storage or to prevent freezing damage.

Frozen Piping Procedures

Steps to take if the water heater or its piping has frozen.

State Regulations

Massachusetts Regulations

Specific regulatory requirements, including CO detectors and signage.

Replacement Parts

Parts List and Item Numbers

Lists common replacement parts with their corresponding item numbers from the tech sheet.

Consumer Warranty

Limited Warranty Coverage

Details the terms, coverage periods, and conditions of the Rinnai limited warranty.

Warranty Exclusions

Outlines what is not covered by the warranty, such as installation issues and misuse.

Warranty Limitations

Discusses implied warranties and limitations on Rinnai's liability.

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