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Rinnai RC98E User Manual

Rinnai RC98E
64 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.
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 RC98E Specifications

General IconGeneral
BrandRinnai
ModelRC98E
CategoryWater Heater
LanguageEnglish

Summary

Specifications

Consumer Safety Information

Safety Definitions

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

Safety Behavior and Practices

Provides essential practices for safe operation and handling of the appliance.

Safety Features

Details automatic shutdown and protection features like overheat and flame failure.

Description of Operation

Operating Instructions

Features Available on Temperature Controllers

Lists and describes features of various Rinnai temperature controllers.

Temperature Controllers - Models

How to Set the Temperature

Temperature Controller Settings

Lists available temperature settings for different models and options.

Temperature Controller Settings

Suggested temperatures are

Offers suggested temperature settings for kitchen, shower, and bath fill.

Temperature Options Without a Temperature Controller

Details how to set the default temperature using appliance switches.

Setting the Sound Volume (Voice Prompt)

Guides users on adjusting the voice prompt volume on controllers.

Using the Water Smart / Bath Fill Function

Bath Fill Temperature Settings Available

Lists the temperature settings available for the bath fill function.

Setting the Water Volume

Guides users on setting the desired water volume for bath fill.

Using the Water Smart / Bath Fill Function

Setting Controller to Mute

Explains how to enable or disable controller beeps.

Setting the Clock

Guides users on setting the clock on the temperature controller.

Maintenance

Cleaning

Provides step-by-step instructions for cleaning the appliance components.

Vent System (for indoor models)

Specifies annual inspection requirements for the vent system.

Air Intake (for outdoor models)

Specifies annual inspection requirements for the air intake.

Motors

Notes that motors are permanently lubricated and need annual cleaning.

Temperature Controller

Advises using a damp cloth to clean the temperature controller.

Lime / Scale Build-up

Refers to flushing the heat exchanger for scale build-up issues (Error Code LC).

Error Codes

Trouble Shooting for Common Issues

Accessing Operating Information

Explains how to display recent error codes and water flow/temperature data.

Water Quality

Discusses water quality parameters and their impact on the appliance.

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

Clean Thermistors

Instructions for cleaning thermistors.

Installation Instructions

General Instructions

Covers safety, codes, material usage, and appliance location requirements.

Clearances from Appliance

Attachment of the Water Heater

Details how to securely mount the water heater to the wall.

Electrical Connection

Error Indication or Air Handler Control Switch

Gas Piping

General Instructions

Covers gas control valves, type, pressure, and leak testing.

Gas Piping

Pipe Sizing Procedure - Example

Provides an example for calculating and selecting the correct gas pipe size.

Water Piping

Isolation Valves and Pressure Relief Valve

Explains the function and installation of isolation and pressure relief valves.

Pressure Relief Valve Installation Instructions

Details the correct procedure for installing the pressure relief valve.

Pressure Relief Valve Maintenance

Advises on annual manual operation for checking the pressure relief valve.

Water Piping

General Instructions

Covers water control valves, pipe material, debris purging, and toxic chemicals.

Pressure Relief Valve

Specifies requirements and installation considerations for the relief valve.

Freeze Protection

Explains the appliance's freeze protection features and optional solenoid valves.

Freeze Protection Piping

Manual draining of the water heater

Step-by-step guide to manually drain the water heater to prevent freezing.

Running a low volume of water through the water heater to prevent freezing

Describes circulating low-volume water to prevent freezing.

When the water heater or external piping has frozen

Instructions on what to do if the unit or piping freezes.

Recommended Piping for Basic Installation

Recommended Piping for Circulation Systems

Venting Instructions

Intake / Exhaust Guidelines

Specifies rules for direct vent, component use, and termination locations.

Condensate

Details condensate trap, drain line requirements, and potential issues.

Maximum Vent Length

Vent Products

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

Additional Clearances - Vent Terminal (RC80i, RC98i)

Additional Clearances (RC80e, RC98e)

Flue Installation (RC80i, RC98i)

Connecting Multiple Water Heaters

High Altitude Installations

Water Heater High Altitude Installation Setting Procedure

Temperature Controller Installation

Location

Advises on suitable locations for installing temperature controllers.

Configurations

Explains how to configure multiple temperature controllers for the unit.

Cable Lengths and Size

Specifies the required cable gauge and maximum lengths for controllers.

Temperature Controller Installation

Mounting the Controller

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

Operating Instructions

FOR YOUR SAFETY READ BEFORE OPERATING

Essential safety warnings and actions to take before operating.

OPERATING INSTRUCTIONS

Provides the sequence of steps to safely operate the water heater.

TO TURN OFF GAS TO APPLIANCE

Instructions for safely shutting off the gas supply to the appliance.

Technical Data

Pressure Drop Curve

Graph showing pressure drop versus water flow rate for different models.

Outlet Flow Data

Graph showing outlet flow rate versus temperature rise for different models.

Space Heating

Temperature Setting

Recommends temperature settings for domestic hot water and space heating.

Pumps

Advises on pump selection for circulating water in heating systems.

Iron Components

Warns against using iron components due to potential clogging.

Dimensions

Ladder Diagram

State Regulations

NOTICE BEFORE INSTALLATION

Emphasizes the need for qualified installers and specific state requirements.

IMPORTANT: In the State of Massachusetts (248 CMR 4.00 & 5.00)

Outlines Massachusetts regulations for CO detectors, signage, and inspection.

Consumer Support

Warranty Information

Details what information to keep for warranty and product registration.

Limited Warranty

Explains what the warranty covers and its duration for different parts.

Limited Warranty Continued

What will Rinnai do?

Explains Rinnai's commitment to repair or replace defective products.

How do I get service?

Guides users on how to contact Rinnai or authorized providers for service.

What is not covered?

Lists common causes for warranty denial, such as improper installation or misuse.

Notes

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