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Electric Point of Use
Water Heaters
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
1
manual (2
/
gallon models) must be grounded. Connect
2
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.
Printed in USA
Use & Care Manual
With Installation Instructions for the Installer
®
LISTED
786H
2½ through 30 Gallon Capacity
120 and 240 Volt Models
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.
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
AP10227-11 (01/05)

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Table of Contents
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Summarization of Contents

Water Temperature Adjustment Safety
Scalding Hazard Warning
Details the severe burn risk from water temperatures over 125°F and protects vulnerable users.
Installation Safety Precautions
California Installation Requirements
Details California-specific earthquake bracing requirements for water heaters.
General Safety Precautions
Lists general safety measures for installation and operation.
Installing the Water Heater
Local Installation Regulations
Outlines requirements for installation based on codes and utility standards.
Optimal Water Heater Location
Provides guidance on selecting the optimal placement for the unit.
Water Heater Installation Details
Managing Thermal Expansion
Explains thermal expansion issues and recommended solutions in water systems.
Water Supply Connection Procedures
Details how to connect the hot and cold water supply lines to the heater.
Typical Installation and Components
Typical Installation Diagram
Illustrates a standard setup for water heater installation.
Relief Valve Installation and Function
Discusses the function, installation, and safety of the relief valve.
Filling the Water Heater Tank
Step-by-step guide to filling the tank before operation.
Electrical and Plumbing Considerations
Condensation Explanation
Explains the cause and resolution of condensation forming on the unit.
Electrical Connection Guidelines
Provides detailed instructions for wiring the unit according to codes.
Branch Circuit Sizing Guide
Guidance for selecting appropriate wiring and circuit protection based on wattage.
Insulation and Piping
Insulation Blanket Usage
Discusses the necessity and installation of external insulation blankets.
Pipe Insulation Installation
Shows how to insulate hot and cold water pipes for energy efficiency.
Advanced Installation Details
Relief Valve Insulation
Instructions for insulating the relief valve opening.
Heat Trap Functionality
Explains the function of heat traps for energy efficiency.
Installation Checklist
Water Heater Location Checklist
Checklist for verifying water heater placement criteria.
Water Supply Checklist
Checklist for confirming water supply connections and filling.
Relief Valve Checklist
Checklist for proper relief valve installation and drainage.
Wiring Checklist
Checklist for ensuring correct electrical wiring and grounding.
Operating the Water Heater
Key Operating Safety Precautions
Key safety rules to follow during operation, including gas precautions.
Understanding Safety Controls
Explanation of thermostat and ECO safety features and their function.
Resetting the Temperature Limiting Control
Steps to reset the ECO after it has been activated.
Emergency Instructions
Actions to take in case of flood, fire, or physical damage.
Water Temperature Setting
Adjusting Water Temperature
Guide for adjusting the water heater thermostat settings for desired temperature.
Water Heater Care and Cleaning
Draining the Water Heater
Detailed steps for draining the water heater tank for maintenance or storage.
Routine Preventative Maintenance
Recommendations for regular maintenance like anode rod inspection and flushing.
Extended Shutdown Procedures
Procedures for preparing the heater for periods of non-use and preventing gas buildup.
Troubleshooting Common Issues
Resolving Rumbling Noise
Tips for addressing rumbling sounds caused by scale or deposits on heating elements.
Addressing Relief Valve Issues
Solutions for relief valve popping or draining due to thermal expansion.
Troubleshooting No Hot Water
Steps for lack of hot water, including demand, fuse, and thermostat checks.
Correcting Overly Hot Water
Guidance on resolving issues where water temperature is excessively high.
Replacement Parts Identification
Parts Order Instructions
Steps to follow when ordering replacement parts from the manufacturer.
2½ Gallon Model Parts
Diagram and part identification for 2½ gallon water heater models.
Service and Support Information
Contacting the Manufacturer
Information and required details for contacting the manufacturer's service department.
Wiring Diagrams
Single Element 120V Wiring Diagram
Wiring diagram for single element 120V water heaters.
Double Element Wiring Diagrams
Diagrams illustrating non-simultaneous and simultaneous double element wiring.

Table of Contents