Rheem 120 Volt User Manual

Water Heaters
Electric Point of Use
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!
California Proposition 65 Warning: This product contains
chemicals known to the State of California to cause cancer,
birth defects or other reproductive harm.
!
!
2½ through 30 Gallon Capacity
120 and 240 Volt Models
®
LISTED
786H
AP10227-10 (11/03)
Printed in USA
Use & Care Manual
With Installation Instructions for the Installer
IMPORTANT SAFETY INSTRUCTIONS
WARNING—When using electrical appliances, basic safety precautions to reduce the risk of fire, electric shock, or injury to persons
should be followed, including:
READ ALL INSTRUCTIONS BEFORE USING THIS
WATER HEATER.
The cord and plug connected water heater covered in this
manual (2
1
/2 gallon models) must be grounded. Connect
only to properly grounded outlet. See “Electrical
Connections” section on page 8.
Install or locate this water heater in accordance with the
provided installation instructions.
Use this water heater only for its intended use as
described in this manual.
As with any appliance, close supervision is necessary
when used by children.
Do Not use an extension cord set with this water heater. If
no receptacle is available adjacent to the water heater,
contact a qualified electrician to have one properly installed.
Do Not operate this water heater if it has a damaged cord
or plug, if it is not working properly, or if it has been
damaged or dropped.
This water heater should be serviced only by qualified
service personnel. Contact nearest authorized service
center for examination, repair or adjustment.
SAVE THESE
INSTRUCTIONS

Rheem 120 Volt Specifications

General

Brand	Rheem
Model	120 Volt
Category	Water Heater
Language	English

Summary

Important Safety Instructions

Water Temperature Adjustment

Time/Temperature Relationship in Scalds

Chart showing time to produce a serious burn at different water temperatures.

Installation Requirements and Precautions

California Installation Requirements

California law requires residential water heaters to be braced or anchored.

General Safety Precautions

General safety precautions for installation and operation of the water heater.

Water Heater Location and Inspection

Local Installation Regulations

Water heater must be installed according to instructions, local codes, and utility requirements.

Location Selection

Guidance on selecting a suitable, clean, dry, and accessible location for the water heater.

Shipment Inspection

Check water heater for damage and verify power supply matches rating plate.

Plumbing and Thermal Expansion

Thermal Expansion Management

Explains thermal expansion and methods to control it, like expansion tanks.

Water Supply Connections

Details on connecting hot and cold water supply lines, including shut-off and drain valves.

Final Installation Steps

Relief Valve Installation

Requirements for the temperature and pressure relief valve installation and discharge line.

Filling the Water Heater

Instructions on how to properly fill the water heater with water.

Electrical Connections

Electrical Connections Guide

Details on wiring requirements, including local codes and NEC standards.

Branch Circuit Sizing Guide

Table providing recommended wire size and overcurrent protection for different wattages.

Insulation Blankets

Pipe Insulation Installation

Relief Valve Insulation Installation

Heat Traps Explained

Installation Checklist

Operating the Water Heater

Operating Safety Precautions

Key safety steps to take before operating the water heater.

Safety Controls Overview

Explanation of the thermostat and the temperature limiting control (ECO).

Water Temperature Setting

Thermostat Adjustment Guide

Step-by-step guide on how to adjust the water heater thermostat.

Care and Cleaning

Draining the Water Heater

Instructions for safely draining the water heater tank.

Routine Preventative Maintenance

Recommended maintenance schedule for ensuring long-term, trouble-free service.

Vacation and Extended Shut-Down

Guidance on preparing the water heater for extended periods of non-use.

Troubleshooting Common Issues

Replacement Parts

Parts Order Instructions

Steps for ordering replacement parts, including necessary information.

Parts for 2 1/2 Gallon Models

Diagram and list of replacement parts specific to 2 1/2 gallon models.

Replacement Parts for Other Models

Parts for 6, 10, 20 Gallon Models

Diagram and list of replacement parts for 6, 10, and 20 gallon single-element models.

Parts for 30 Gallon Models

Diagram and list of replacement parts for 30 gallon single and double element models.

Getting Service for Your Water Heater