Rheem 72V20-1 User Manual

Water Heaters
Electric
For Manufactured Housing (Mobile Home)
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.
!
!
Single and Double
Element Models
Side or Top
Water Connections
Residential 20–52 Gallon
®
LISTED
786H
Printed in USA
Use & Care Manual
With Installation Instructions for the Installer
AP10414-9 (11/03)

Rheem 72V20-1 Specifications

General

Brand	Rheem
Model Number	72V20-1
Type	Electric
Tank Capacity	20 gallons
Voltage	240V
Warranty	6 years

Summary

Important Safety Information

Water Temperature Adjustment

Explains thermostat adjustment to prevent scalding and conserve energy.

Scald Hazard Warning

Details the risk of severe burns from water temperatures over 125°F.

General Safety Precautions

Highlights essential safety steps for operation and maintenance.

Installing the Water Heater

Thermal Expansion Considerations

Relief Valve Installation

Guidance on installing the temperature and pressure relief valve and discharge piping.

Electrical Connections

Instructions for safe and code-compliant electrical hookup.

Water Supply Connections

Filling the Water Heater

Branch Circuit Sizing and Wire Size Guide

Operating the Water Heater

Hydrogen Gas Safety Caution

Water Temperature Setting

Guide to setting the thermostat for optimal temperature and safety.

Operating Safety Precautions

Scald Risk Chart

Chart showing how water temperature affects burn time.

Safety Controls (ECO)

Explanation of the ECO (Energy Cut-Off) and how to reset it.

Emergency Instructions

Troubleshooting Tips

Common Problems and Solutions

Table of common issues, their causes, and recommended actions.

If You Need Service

Contacting the Manufacturer for Service

Information needed when contacting the manufacturer for service assistance.