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Rheem Gladiator User Manual

Rheem Gladiator
28 pages
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Water Heaters
Electric Residential
The purpose of this manual is twofold:
one, to provide the installer with the basic
directions and recommendations for the proper
installation and adjustment of the water heater;
and two, for the owner–operator, to explain
the features, operation, safety precautions,
maintenance and troubleshooting of the water
heater. This manual also includes a parts list.
It is imperative that all persons who are
expected to install, operate or adjust this
water heater read the instructions carefully
so they may understand how to perform
these operations. If you do not understand
these instructions or any terms within it, seek
professional advice.
Any questions regarding the operation,
maintenance, service or warranty of this
water heater should be directed to the seller
from whom it was purchased. If additional
information is required, refer to the section on
“If you need service.”
Do not destroy this manual. Please read
carefully and keep in a safe place for future
reference.
!
Recognize this symbol as an
indication of Important Safety
Information!
With Electronic Control
®
LISTED
786H
AP20070
Use & Care Manual
With Installation Instructions for the Installer
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Rheem Gladiator Specifications

General IconGeneral
BrandRheem
ModelGladiator
Capacity50 Gallons
Voltage240V
Power SourceElectric
TypeElectric
Wi-Fi ConnectivityYes
Smart FeaturesLeak detection
Warranty12 Years
First Hour Rating67 Gallons
Recovery Rate21 GPH

Summary

Electric Residential Water Heaters

Manual Introduction

Introduces the manual's purpose for installers and owners, covering safety, operation, and parts.

Important Safety Information

Water Temperature Setting Safety

Details risks of high water temperatures and recommendations for safe temperature settings to prevent scalding.

California Installation Requirements

Outlines California law for bracing water heaters against seismic activity, with contact information.

General Safety Precautions

Essential safety practices for installation, operation, and servicing to minimize risks.

Water Heater Installation

Location, Shipment, and Connections

Guidance on selecting location, inspecting shipment, and making water/electrical connections.

Thermal Expansion and Relief Valves

Addresses thermal expansion issues, relief valve installation, and filling procedures.

Insulation and Leak Protection

Instructions for pipe insulation, relief valve insulation, heat traps, and the LeakGuard™ system.

Installation Checklist

A comprehensive checklist summarizing key installation steps for location, water, relief valve, and wiring.

Operating the Water Heater

Operational Safety and Controls

Covers hydrogen gas warnings, safety precautions, and the function/reset of safety controls like the ECO.

Water Temperature Settings

Discusses setting water temperature for efficiency and safety, including the VACATION mode feature.

Programming the Electronic Control

Temperature Adjustment and Keypad Management

Instructions for adjusting temperature, locking/unlocking keypad, and activating VACATION mode.

Advanced Settings and Status Indicators

Steps for setting temperatures above 140°F and interpreting heating status indicators.

Electronic Control Alerts

Leak Detection Override and Alarm Muting

How to override leak detection and mute alarm beeps, noting the need to correct underlying issues.

Wi-Fi Connectivity

Setup and Troubleshooting

Guide for connecting to Wi-Fi and the Rheem EcoNet app, with steps for resolving connection issues.

Error Codes

Interpreting Codes and Blinks

Explains LED blink patterns and lists specific error codes with recommended actions for diagnosis.

Care and Cleaning

Draining and Preventative Maintenance

Instructions for safely draining the water heater and recommendations for routine preventative maintenance.

Extended Shut-Down and Anode Rod

Guidance for extended non-use and the importance of anode rod maintenance for tank protection.

Troubleshooting and Service

Before You Call For Service

A troubleshooting chart to diagnose and resolve common problems before contacting service personnel.

Local Mode Operation

Connecting for Diagnostics

Steps to connect directly to the water heater using local mode and the Rheem EcoNet app for diagnostics.

Replacement Parts

Ordering Replacement Parts

Instructions for ordering parts, detailing necessary model, serial number, and part description.

Cavity Insert Instructions

Component Replacement Procedures

Instructions for qualified service personnel on removing the cavity insert to replace thermostats or heating elements.

Wiring Diagram

Electrical Schematic

Provides a detailed schematic of the water heater's electrical connections and internal wiring.

If You Need Service

Contacting Service and Support

Guidance on contacting installers, contractors, or the manufacturer's service department for assistance.

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