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Rinnai RL75E User Manual

Rinnai RL75E
60 pages
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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
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 instructions.
If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
Operation and Installation Manual
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Outdoor Tankless Water Heater
ANS Z21.10.3
CSA 4.3
Table of Contents ..................... 2
Consumer Safety Information ... 4
Operating Instructions ............... 5
Maintenance ........................... 11
Error Codes ............................ 12
Installation Instructions ........... 16
Consumer Support .................. 39
French Version ....................... 42
RL75e ................. REU-VB2528WD-US
RL94e ................. REU-VB2735WD-US
R98LSe ............... REU-VA3237W-US
R98LSe-ASME ... REU-VA3237W-ASME
Register your product at www.rinnairegistration.com or
call 1-866-RINNAI1 (746-6241)
FOR OUTDOOR APPLICATIONS ONLY
If the information in these instructions is not
followed exactly, a fire or explosion may
result causing property damage, personal injury or death.
WARNING
The VB series (RL75e and RL94e) are certified for
installation in manufactured (mobile) homes.

Table of Contents

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Rinnai RL75E Specifications

General IconGeneral
BrandRinnai
ModelRL75E
CategoryWater Heater
LanguageEnglish

Summary

Rinnai Specifications

Consumer Safety Information

Safety Definitions and Practices

Defines safety alerts, terms (DANGER, WARNING, CAUTION), and safe operation practices.

Safety Features

Lists built-in safety mechanisms like overheat, flame failure, and power surge protection.

Description of Operation

Operating Instructions

Temperature Controller Operation and Settings

Covers controller features, temperature setting, and options without a controller.

Water Smart / Bath Fill Function

Details the features and operation of the Water Smart / Bath Fill function.

Controller Configuration Settings

Instructions for muting controller beeps and setting the clock.

Maintenance

Appliance Cleaning and Airflow

Procedures for cleaning the unit, filters, air intake, and exhaust.

Component Maintenance

Covers motors, temperature controller, and visual flame inspection.

Scale Prevention and Obstruction Clearing

Addresses lime/scale build-up and snow accumulation.

Error Codes

Trouble Shooting for Common Issues

Troubleshooting Common Problems

Addresses common issues like no hot water, cold water, and fan operation.

Accessing Information and Water Quality

How to access operating info and considerations for water quality.

Flushing the Heat Exchanger

Cleaning Thermistors

Instructions for cleaning thermistors as part of maintenance.

Installation Instructions

General Installation Guidelines

Provides general guidelines, warnings, and code compliance for installation.

Clearances and Mounting

Details required clearances and steps for securely mounting the appliance.

Electrical, Gas, and Water Piping

Guidance on electrical connections, gas piping, and water piping.

Freeze Protection

Explains freeze protection features, manual draining, and piping.

Flue Terminal Clearances

Diagram and table detailing required flue terminal clearances.

Multiple Units and High Altitude

Instructions for connecting multiple heaters and setting for high altitudes.

Temperature Controller Installation

Guidance on controller location, configurations, and cable requirements.

Operating Instructions

Gas Leak Safety Procedures

Critical steps to follow if a gas leak is detected.

Turning Off Gas to Appliance

Step-by-step guide for safely shutting off the gas supply.

Technical Data

Performance Curves

Graphs showing pressure drop and outlet flow data for different models.

Space Heating Applications

Application Settings and Components

Guidance on temperature settings, pumps, replacement, and iron components.

Dimensions

Ladder Diagrams

Consumer Support

Warranty Information and Limited Warranty

Covers warranty registration, coverage, terms, and exclusions.

State Regulations

Massachusetts Specific Regulations

Specific requirements for Massachusetts, including CO detectors and signage.

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