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Rinnai V65i User Manual

Rinnai V65i
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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 V65i Specifications

General IconGeneral
TypeTankless
Fuel TypeNatural Gas or Propane
Installation LocationIndoor
Energy Factor0.82
Weight45.6 lbs
Temperature Range98°F - 140°F
Voltage120V
Thermal Efficiency82%
Dimensions23 x 14 x 9 inches
BTU Input Range15, 000 - 150, 000 BTU/h
VentingDirect Vent
Ignition SystemElectronic
Ignition TypeElectronic
Warranty5 years parts
Flow RateUp to 6.5 GPM

Summary

Important Safety Information

Safety Definitions

Defines safety alert symbols like DANGER, WARNING, and CAUTION.

Safety Behaviors and Practices

Installation Instructions

Installer Qualifications

Outlines skills required for professional installation.

Type of Installation

Specifies types of installations supported (residential, mobile homes).

Installation Steps Overview

Lists the sequence of installation tasks.

General Installation Instructions

Provides essential do's and don'ts for installation.

Prepare for Installation

Details parts, tools, and materials needed for installation.

Determine Installation Location

Guides selection of suitable locations considering clearances and environment.

Water Quality Considerations

Discusses water quality impact on the heat exchanger and warranty.

Environmental Considerations

Advises on avoiding corrosive environments for installation.

Vent Termination Clearances

Specifies required clearances for vent termination for indoor models.

Additional Clearances (V75i, V65i)

Details specific clearances for indoor models V75i and V65i.

Additional Clearances (V75e, V65e)

Details specific clearances for outdoor models V75e and V65e.

Unit Clearances Summary

Presents clearance requirements for indoor and outdoor models in a table.

Maximum Vent Length (Indoor)

Explains how to determine and set maximum vent length based on elbows.

Freeze Protection Measures

Advises on protecting the unit and water lines from freezing.

Checklist for Installation Location

Provides a checklist for verifying installation location suitability.

Mount to Wall

Details the process of securely mounting the water heater to the wall.

Remove Front Panel

Instructs on removing the front panel for access.

Installation of Venting (Indoor)

Covers guidelines and manufacturers for installing venting systems.

Flue Installation (Indoor)

Illustrates and explains flue termination methods, with or without condensate collector.

Condensate Management (Indoor)

Explains condensate formation and drainage requirements for indoor models.

Checklist for Venting and Condensate

Checklist to ensure proper venting and condensate management.

Plumbing Installation

Pressure Relief Valve Requirements

Details requirements for installing pressure relief valves.

Isolation Valves Recommendation

Recommends installing isolation valves for easier maintenance.

Piping Requirements

Outlines rules for potable water piping and connections.

Piping Diagram for Basic Installation

Shows a schematic of basic water and gas connections.

Connect Water Heater to Water Supply

Explains how to connect the water heater to the water supply lines.

Checklist for Plumbing

A checklist to verify proper plumbing installation.

Gas Supply Installation

General Gas Supply Instructions

Provides essential do's and don'ts for gas supply installation.

Gas Pipe Sizing Guide

Details how to size gas piping based on consumption and length.

Electrical Connection

Altitude Adjustment

Explains how to set DIP switches for different altitudes.

Vent Length Adjustment (Indoor)

Instructs on adjusting DIP switch for vent length.

Gas and Electricity Checklist

Checklist to confirm correct gas and electrical connections.

Temperature Controller Installation

Controller Configurations

Explains how multiple controllers can be wired in parallel.

Controller Location Guidelines

Advises on selecting suitable locations for temperature controllers.

Controller Cable Specifications

Specifies cable gauge and maximum lengths for controllers.

Mounting the Controller

Provides step-by-step instructions for mounting the controller.

Final Installation Checklist

Technical Specifications

Technical Data Summary

Lists detailed technical specifications for various models.

Unit Dimensions

Provides physical dimensions of the water heaters.

Pressure Drop Curve

Graph showing pressure loss versus water flow rate.

Water Flow Curve

Graph showing water flow rate versus temperature rise.

Electrical Ladder Diagram

Operation Instructions

Important Operational Facts

Provides introductory facts and safety advice for operation.

Gas Leak Emergency Procedures

Outlines emergency procedures for gas leaks.

Safe Operation Guidelines

Step-by-Step Operating Instructions

Step-by-step guide for starting and operating the water heater.

Turning Off Gas Supply

Instructions for safely shutting off gas to the appliance.

Using the Temperature Controller

Setting the Water Temperature

Temperature Control Options

Available Temperature Settings

Lists available temperature settings with and without a controller.

Controller Without Controller Settings

Explains temperature settings without a controller.

Controller Mute Function

How to enable/disable audible beeps on the controller.

Controller Lock Feature

Instructions for locking and unlocking the controller.

Diagnostic Codes

Displaying Diagnostic Information

How to access and view diagnostic codes.

Troubleshooting Diagnostic Codes

Required Maintenance

Appliance Cleaning

Instructions for cleaning internal and external parts of the appliance.

Vent System Inspection

Advises on annual inspection of the vent system.

Motor Care

Notes on motor lubrication and cleaning.

Temperature Controller Cleaning

Cleaning instructions for the temperature controller.

Lime and Scale Management

Addresses diagnostic codes related to scale build-up and flushing.

Snow Accumulation Prevention

Reminds to keep the flue terminal clear of snow.

Water Filter Cleaning

Instructions for cleaning the inlet water filter.

Pressure Relief Valve Testing

Instructions for annual manual testing of the pressure relief valve.

Visual Flame Inspection

How to visually inspect the burner flame for proper operation.

Freeze Protection Measures

Advice on protecting the unit from freezing weather.

Winterizing Procedures

Recommendations for preparing the unit for winter.

Flushing the Heat Exchanger

Draining the Water Heater

Manual Draining Procedure

Step-by-step instructions for manually draining the unit.

Resuming Normal Operation

Steps to follow after draining to return to normal operation.

Preventing Freezing with Low Flow

Method to prevent freezing by running low water volume.

Handling Frozen Components

Actions to take if the unit or piping has frozen.

Regulatory Compliance

Important Installation Notice

Important notice regarding licensed professional installation.

Massachusetts State Regulations

Specific regulations for Massachusetts installation.

Replacement Parts List

Consumer Warranty Information

Limited Warranty Details

Details the terms and scope of the limited warranty.

Warranty Coverage Scope

Specifies what defects are covered under the warranty.

Warranty Coverage Duration

Outlines the duration of warranty coverage for different components.

Rinnai's Service Commitment

Explains Rinnai's responsibilities for repairs and replacements.

Obtaining Warranty Service

Provides instructions on how to obtain warranty service.

Warranty Exclusions

Lists exclusions and limitations of the warranty.

Warranty Limitations

Discusses implied warranties and legal rights.

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