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Rheem Iconic RTGH-SR11i User Manual

Rheem Iconic RTGH-SR11i
88 pages
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TANKLESS
WATER HEATERS
NL ENGINEERING CENTER
TECHNICAL TRAINING AND
SERVICE MANUAL
SUPER HIGH EFFICIENCY (Condensing)
RTGH-S11i RTGH-S10i RTGH-S84i
RTGH-SR11i RTGH-SR10i RTGH-SR84i
RTGH-SPR11i RTGH-SPR10i RTGH-SPR84i
CRTGH-S11i CRTGH-S10i CRTGH-S84i
CRTGH-SR11i CRTGH-SR10i CRTGH-SR84i
CRTGH-SPR11i CRTGH-SPR10i CRTGH-SPR84i
RUTGH-S11i RUTGH-S10i RUTGH-S84i
RUTGH-SR11i RUTGH-SR10i RUTGH-SR84i
RUTGH-SPR11i RUTGH-SPR10i RUTGH-SPR84i
CRUTGH-S11i CRUTGH-SR11i CRUTGH-SPR11i
RTGH-SC11i RTGH-SCP11i
AP23209

Table of Contents

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Rheem Iconic RTGH-SR11i Specifications

General IconGeneral
TypeTankless
Fuel TypeNatural Gas
Flow Rate11 GPM
Warranty (Parts)5 years
Water Connection3/4 inch NPT
Water Pressure Range20-150 PSI
Voltage120V
Thermal Efficiency94%
Ignition TypeElectronic
Warranty (Heat Exchanger)12 years
Gas Connection3/4 inch NPT
Energy Factor0.93
Energy EfficiencyHigh

Summary

Safety and Introduction

Electrical and Flammable Safety Precautions

Essential safety precautions regarding electrical hazards and flammable materials.

Water Temperature Safety Guidelines

Guidelines for setting safe water temperatures to prevent scalding.

Troubleshooting Tools

Essential Measurement Tools

Lists essential tools for measuring voltage, resistance, and gas pressure.

Voltage and Resistance Measurement Procedures

Outlines safe procedures for taking electrical measurements on the unit.

General Information

Product Specifications

Technical specifications including dimensions, gas consumption, and electrical requirements.

Control Board Connectors and Diagnostics

Identifies control board connectors and key diagnostic points for troubleshooting.

User Interface Operation and Settings

Explains LCD functions, status, WiFi setup, and operational mode settings.

Error Code Diagnostics

Troubleshooting No Hot Water

Addresses issues with no hot water delivery, checking flow and unit enablement.

Thermistor Malfunction Diagnostics

Guides through diagnosing thermistor errors by checking resistance and connections.

Ignition and Flame Detection Errors

Guides on resolving flame detection failures, ignition problems, and gas supply issues.

Venting and Airflow Errors

Diagnoses problems related to blocked venting or airflow issues.

How to Remove Components

Front Cover Removal

Step-by-step instructions for removing the front cover of the unit.

Gas-Air Ratio Valve Removal

Procedure for removing the gas-air ratio valve, including screw and pipe disconnection.

Flame Rod Removal

Instructions for safely removing the flame rod, including its bracket.

Control Board Removal

Step-by-step guide to removing the main control board and its bracket.

How to Connect

WiFi Connectivity Setup

Guides users through downloading the EcoNet app and connecting the water heater to WiFi.

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