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Rinnai RC98I User Manual

Rinnai RC98I
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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.
WARNING: If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or death.
Operation and Installation Manual
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Table of Contents .................... 2
Consumer Safety Information .. 4
Operating Instructions .............. 5
Maintenance ............................ 11
Error Codes ............................. 12
Installation Instructions ............ 16
Consumer Support ................... 41
French Version ........................ 43
Tankless Water Heater
Register your product at www.rinnairegistration.com or
call 1-866-RINNAI1 (746-6241)
ANS Z21.10.3
CSA 4.3
FOR INDOOR APPLICATIONS ONLY
RC80i .................. REU-KA2530FFUD-US
RC98i .................. REU-KA3237FFUD-US
FOR OUTDOOR APPLICATIONS ONLY
RC80e ................. REU-KA2530WD-US
RC98e ................. REU-KA3237WD-US

Table of Contents

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Rinnai RC98I Specifications

General IconGeneral
BrandRinnai
ModelRC98I
CategoryWater Heater
LanguageEnglish

Summary

Specifications

Consumer Safety Information

Safety Definitions

Explanation of safety alert symbols like DANGER, WARNING, and CAUTION.

Safety Behavior and Practices

Guidelines for safe operation and installation of the appliance.

Safety Features

Overview of built-in safety mechanisms like overheat and flame failure shut-down.

Description of Operation

Operating Instructions

Features Available on Temperature Controllers

Details the functions of various Rinnai temperature controllers.

How to Set the Temperature

Steps to adjust water temperature using the controller.

Using the Water Smart / Bath Fill Function

Instructions for the automatic bath filling feature.

Setting Controller to Mute

How to enable or disable controller beep sounds.

Setting the Clock

Instructions for setting the clock on the temperature controller.

Maintenance

Cleaning

Procedure for cleaning the water heater's internal components.

Vent System (for indoor models)

Guidance on inspecting the indoor vent system annually.

Lime / Scale Build-up

Information on scale build-up and the LC error code.

Visual Inspection of Flame

How to visually inspect the burner flame for proper operation.

Flushing the Heat Exchanger (Error Code: LC or 00)

Procedure to flush the heat exchanger due to lime build-up.

Error Codes

Troubleshooting Common Issues

Accessing Operating Information

How to retrieve recent error codes and operating data.

Water Quality

Guidelines on acceptable water quality levels for the appliance.

Installation Instructions

General Instructions

General guidelines and warnings for installing the water heater.

Clearances from Appliance

Required clearances for safe installation around the appliance.

Attachment of the Water Heater

Instructions on how to securely mount the water heater.

Electrical Connection

Requirements for connecting the appliance to power.

Gas Piping

General Instructions

Essential guidelines for gas piping installation and safety.

Pipe Sizing Procedure - Example

An example demonstrating how to size gas piping for the appliance.

Water Piping

Isolation Valves and Pressure Relief Valve

Details on isolation valves and the pressure relief valve.

Pressure Relief Valve Installation Instructions

Steps for correctly installing the pressure relief valve.

Pressure Relief Valve Maintenance

Recommended maintenance for the pressure relief valve.

General Instructions

General guidelines for water piping, including potable water use.

Freeze Protection

Information on the appliance's freeze protection features.

Freeze Protection Piping

Guidance on piping for freeze protection.

Recommended Piping for Basic Installation

Diagram for basic water piping setup.

Recommended Piping for Circulation Systems

Diagram for circulation system piping.

Venting Instructions

Intake / Exhaust Guidelines

Rules for direct vent, intake, and exhaust component installation.

Condensate

Information on the condensate trap, drain line, and disposal.

Maximum Vent Length

Guidelines for determining maximum vent pipe length.

Flue Terminal Clearances (ANS Z21.10.3, CSA 4.3)

Required clearances for the flue terminal.

Additional Clearances - Vent Terminal (RC80i, RC98i)

Specific clearances for RC80i/RC98i vent terminals.

Additional Clearances (RC80e, RC98e)

Specific clearances for RC80e/RC98e vent terminals.

Flue Installation (RC80i, RC98i)

Instructions for flue installation.

Connecting Multiple Water Heaters

How to connect multiple units for increased capacity.

High Altitude Installations

Settings for installing the appliance at high altitudes.

Water Heater High Altitude Installation Setting Procedure

Detailed procedure for high altitude installation settings.

Temperature Controller Installation

Location

Recommended locations for installing temperature controllers.

Configurations

Possible combinations of Rinnai temperature controllers.

Cable Lengths and Size

Specifications for temperature controller cables.

Mounting the Controller

Step-by-step guide for mounting the temperature controller.

Operating Instructions

For Your Safety Read Before Operating

Critical safety warnings and procedures before operating the unit.

Operating Instructions

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

To Turn Off Gas to Appliance

Procedure for safely turning off the gas supply to the appliance.

Technical Data

Pressure Drop Curve

Graph showing pressure drop versus water flow rate.

Outlet Flow Data

Data on water flow rate based on temperature rise.

Space Heating

Information specific to using the appliance for space heating.

Dimensions

Physical dimensions of the water heater models.

Ladder Diagram

Electrical schematic of the appliance.

State Regulations

Notice Before Installation

Important notices regarding installation regulations.

Massachusetts Regulations

Specific requirements for Massachusetts, including CO detectors and signage.

Installation of Carbon Monoxide Detectors

Requirements for installing carbon monoxide detectors.

Consumer Support

Warranty Information

Information on how to record purchase and installation details.

Limited Warranty

Details of the product's warranty coverage and duration.

Limited Warranty Continued

Further warranty details, service, and exclusions.

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