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Rinnai RL75eN - User Manual

Rinnai RL75eN
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

Question and Answer IconNeed help?

Do you have a question about the Rinnai RL75eN and is the answer not in the manual?

Summary

Specifications

Consumer Safety Information

Safety Definitions

Explains safety alert symbols and hazard classifications.

Safety Behavior and Practices

Covers safe operating practices and appliance care to prevent hazards.

Safety Features

Details built-in safety mechanisms like overheat and flame failure protection.

Description of Operation

Features Available on Temperature Controllers

Outlines functions and availability of various temperature controller models.

Temperature Controller

How to Set the Temperature

Step-by-step guide for adjusting water temperature using the controller.

Temperature Controller Settings

Provides available temperature ranges for different models and settings.

Temperature Options Without a Temperature Controller

Explains how to set temperature without a controller using dip switches.

Setting the Sound Volume (Voice Prompt)

Instructions for adjusting voice prompt volume on specific controllers.

Using the Water Smart; Bath Fill Function

Setting the Water Volume

Guide to set desired water volume for bath filling function.

Setting Controller to Mute

Procedure to enable or disable controller beep sounds.

Setting the Clock

Instructions for setting the time on the temperature controller.

Maintenance

Cleaning

Steps for cleaning internal components and the exterior of the appliance.

Visual Inspection of Flame

Guidelines for checking burner flame pattern for satisfactory operation.

Error Codes

Trouble Shooting for Common Issues

Common problems and their potential solutions for troubleshooting.

Accessing Operating Information

How to retrieve error codes and operating data from the controller.

Water Quality

Information on water quality parameters and their maximum allowable levels.

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

Installation Instructions

General Instructions

Key guidelines and warnings for proper appliance installation.

Clearances from Appliance

Required minimum clearances around the appliance for safe operation.

Attachment of the Water Heater

Instructions for securely mounting the water heater to a wall.

Electrical Connection

Requirements for proper electrical grounding and power supply connection.

Gas Piping

General instructions for safe and compliant gas supply line installation.

Pipe Sizing Procedure - Example

Example calculation for sizing gas piping based on BTU load and pipe length.

Water Piping

Details on water inlet/outlet connections and required valves.

Isolation Valves and Pressure Relief Valve (RL75 e and RL94 e)

Installation of isolation and pressure relief valves for system isolation and safety.

Freeze Protection

Features and recommendations for preventing freezing damage to the unit and piping.

Manual draining of the water heater

Step-by-step instructions for manually draining the water heater for storage or freeze protection.

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

Method to prevent freezing by running a minimal water flow.

Freeze Protection Piping

Recommended Piping for Basic Installation

Recommended Piping for Circulation Systems

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

Additional Clearances

Connecting Multiple Water Heaters

Guidelines

Important considerations for connecting multiple water heaters.

High Altitude Installations

Water Heater High Altitude Installation Setting Procedure

Procedure for setting dip switches based on installation altitude.

Temperature Controller Installation

Location

Recommended placement guidelines for temperature controllers.

Configurations

Options for connecting multiple controllers to a single water heater.

Cable Lengths and Size

Specifications for temperature controller wiring cable length and gauge.

Mounting the Controller

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

Operating Instructions

FOR YOUR SAFETY READ BEFORE OPERATING

Critical safety precautions and warnings before initial appliance operation.

OPERATING INSTRUCTIONS

Detailed steps for starting and operating the water heater.

TO TURN OFF GAS TO APPLIANCE

Procedure for safely shutting off the gas supply to the unit.

Technical Data

Pressure Drop Curve

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

Outlet Flow Data

Chart illustrating water flow capacity based on temperature rise.

Space Heating

Temperature Setting

Recommendations for setting temperatures for domestic hot water and space heating.

Pumps

Guidelines on pump selection and sizing for circulation systems.

Dimensions

Ladder Diagram (for RL75 e and RL94 e)

Ladder Diagram (for R98 LSe and R98 LSe-ASME)

Consumer Support

Warranty Information

Fields for recording purchase and installation details for warranty.

Limited Warranty

Details on what the warranty covers and its duration.

What will Rinnai do?

Explains Rinnai's actions for warranty repairs or replacements.

How do I get service?

Information on how to contact for warranty service and proof of purchase.

What is not covered?

List of conditions and situations excluded from warranty coverage.

State Regulations

NOTICE BEFORE INSTALLATION

General installation requirements mandated by state regulations.

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

Specific requirements for Massachusetts, including CO detectors and signage.

Summary

Specifications

Consumer Safety Information

Safety Definitions

Explains safety alert symbols and hazard classifications.

Safety Behavior and Practices

Covers safe operating practices and appliance care to prevent hazards.

Safety Features

Details built-in safety mechanisms like overheat and flame failure protection.

Description of Operation

Features Available on Temperature Controllers

Outlines functions and availability of various temperature controller models.

Temperature Controller

How to Set the Temperature

Step-by-step guide for adjusting water temperature using the controller.

Temperature Controller Settings

Provides available temperature ranges for different models and settings.

Temperature Options Without a Temperature Controller

Explains how to set temperature without a controller using dip switches.

Setting the Sound Volume (Voice Prompt)

Instructions for adjusting voice prompt volume on specific controllers.

Using the Water Smart; Bath Fill Function

Setting the Water Volume

Guide to set desired water volume for bath filling function.

Setting Controller to Mute

Procedure to enable or disable controller beep sounds.

Setting the Clock

Instructions for setting the time on the temperature controller.

Maintenance

Cleaning

Steps for cleaning internal components and the exterior of the appliance.

Visual Inspection of Flame

Guidelines for checking burner flame pattern for satisfactory operation.

Error Codes

Trouble Shooting for Common Issues

Common problems and their potential solutions for troubleshooting.

Accessing Operating Information

How to retrieve error codes and operating data from the controller.

Water Quality

Information on water quality parameters and their maximum allowable levels.

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

Installation Instructions

General Instructions

Key guidelines and warnings for proper appliance installation.

Clearances from Appliance

Required minimum clearances around the appliance for safe operation.

Attachment of the Water Heater

Instructions for securely mounting the water heater to a wall.

Electrical Connection

Requirements for proper electrical grounding and power supply connection.

Gas Piping

General instructions for safe and compliant gas supply line installation.

Pipe Sizing Procedure - Example

Example calculation for sizing gas piping based on BTU load and pipe length.

Water Piping

Details on water inlet/outlet connections and required valves.

Isolation Valves and Pressure Relief Valve (RL75 e and RL94 e)

Installation of isolation and pressure relief valves for system isolation and safety.

Freeze Protection

Features and recommendations for preventing freezing damage to the unit and piping.

Manual draining of the water heater

Step-by-step instructions for manually draining the water heater for storage or freeze protection.

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

Method to prevent freezing by running a minimal water flow.

Freeze Protection Piping

Recommended Piping for Basic Installation

Recommended Piping for Circulation Systems

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

Additional Clearances

Connecting Multiple Water Heaters

Guidelines

Important considerations for connecting multiple water heaters.

High Altitude Installations

Water Heater High Altitude Installation Setting Procedure

Procedure for setting dip switches based on installation altitude.

Temperature Controller Installation

Location

Recommended placement guidelines for temperature controllers.

Configurations

Options for connecting multiple controllers to a single water heater.

Cable Lengths and Size

Specifications for temperature controller wiring cable length and gauge.

Mounting the Controller

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

Operating Instructions

FOR YOUR SAFETY READ BEFORE OPERATING

Critical safety precautions and warnings before initial appliance operation.

OPERATING INSTRUCTIONS

Detailed steps for starting and operating the water heater.

TO TURN OFF GAS TO APPLIANCE

Procedure for safely shutting off the gas supply to the unit.

Technical Data

Pressure Drop Curve

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

Outlet Flow Data

Chart illustrating water flow capacity based on temperature rise.

Space Heating

Temperature Setting

Recommendations for setting temperatures for domestic hot water and space heating.

Pumps

Guidelines on pump selection and sizing for circulation systems.

Dimensions

Ladder Diagram (for RL75 e and RL94 e)

Ladder Diagram (for R98 LSe and R98 LSe-ASME)

Consumer Support

Warranty Information

Fields for recording purchase and installation details for warranty.

Limited Warranty

Details on what the warranty covers and its duration.

What will Rinnai do?

Explains Rinnai's actions for warranty repairs or replacements.

How do I get service?

Information on how to contact for warranty service and proof of purchase.

What is not covered?

List of conditions and situations excluded from warranty coverage.

State Regulations

NOTICE BEFORE INSTALLATION

General installation requirements mandated by state regulations.

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

Specific requirements for Massachusetts, including CO detectors and signage.

Rinnai RL75eN Specifications

General IconGeneral
TypeTankless
Fuel TypeNatural Gas
Maximum Flow Rate7.5 GPM
Temperature Range98°F - 140°F
Energy Factor0.82
Ignition TypeElectronic Ignition
VentingDirect Vent
Warranty12 years heat exchanger, 5 years parts

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