4
thank you for purchasing this water heater. Properly installed and
maintained, it should give you years of trouble free service.
Abbreviations Found In This Instruction Manual:
• ANSI - American National Standards Institute
• ASME - American Society of Mechanical Engineers
• GAMA - Gas Appliance Manufacturer’s Association
• NEC - National Electrical Code
• NFPA - National Fire Protection Association
• UL - Underwriters Laboratory
preparInG for the InstallatIon
1. Read the “General Safety” section of this manual first and then
the entire manual carefully. If you don’t follow the safety rules,
the water heater may not operate safely. It could cause DEATH,
SERIOUS BODILY INJURY AND/OR PROPERTY DAMAGE.
This manual contains instructions for the installation, operation,
and maintenance of the electric water heater. It also contains
warnings throughout the manual that you must read and be aware
of. All warnings and all instructions are essential to the proper
operation of the water heater and your safety. read the entIre
Manual Before atteMptInG to Install or operate
the water heater.
2. The installation must conform with these instructions and the
local code authority having jurisdiction and the requirements of
the power company. In the absence of code requirements, follow
NFPA-70 (current edition). The National Electrical Code may be
ordered from: National Fire Protection Association, 1 Batterymarch
Park, Quincy, MA 02269.
3. If after reading this manual you have any questions or do not
understand any portion of the instructions, contact A.O. Smith
Water Products Customer Care Center at 1-800-527-1953.
A sample rating plate
and barcode tag are shown on page 3 of this
manual.
In order to exp edite your request, please have the serial
number and item
ID from the barcode tag available for the technician.
4. Carefully plan your intended placement of the water heater.
Examine the location to ensure the water heater complies with
the “Locating the New Water Heater” section in this manual.
INSTALLATION AND SERVICE OF THIS WATER HEATER
REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED
TRADESMAN OR QUALIFIED AGENCY (Page 2) IN THE
FIELD INVOLVED. PLUMBING AND ELECTRICAL WORK ARE
REQUIRED.
5. For installation in California this water heater must be braced or
anchored to avoid falling or moving during an earthquake. See
instructions for correct installation procedures. Instructions may
be obtained from California Ofce of the State Architect, 1102 Q
Street, Suite 5100, Sacramento, CA 95811.
6. Massachusetts Code requires this water heater to be installed in
accordance with Massachusetts 248-CMR 2.00: State Plumbing
Code and 248-CMR 5.00.
IntroductIonSAFE INSTALLATION, USE AND SERVICE............................2
GENERAL SAFETY..................................................................3
TABLE OF CONTENTS ............................................................4
INTRODUCTION ......................................................................4
Preparing for the New Installation .....................................4
DIMENSIONS AND CAPACITIES DATA ..................................5
FEATURES AND COMPONENTS .......................................6-7
LOCATING THE NEW WATER HEATER .................................8
INSTALLATION ........................................................................8
Required Ability .................................................................8
General .............................................................................8
Mixing Valve Usage ..........................................................8
Chemical Vapor Corrosion ................................................8
Circulating Pump...............................................................9
Insulation Blankets ............................................................9
Temperature-Pressure Relief Valve ..................................9
ELECTRICAL .........................................................................10
General ...........................................................................10
Branch Circuit .................................................................10
Heater Circuits ................................................................10
Control Circuits ...............................................................10
Power Circuits .................................................................10
ELECTRICAL AND RECOVERIES DATA ...............................11
WIRING DIAGRAMS ........................................................12-13
OPERATION ...........................................................................14
General ...........................................................................14
Filling the Water Heater ..................................................14
Start Up ...........................................................................14
Draining the Water Heater ..............................................14
TEMPERATURE REGULATION ............................................14
Temperature Adjustment .................................................15
High Termperature Devices ............................................15
MAINTENANCE .....................................................................15
General ...........................................................................15
Temperature-Pressure Relief Valve Operation .........15-16
Flushing ..........................................................................16
Sediment Removal..........................................................16
Water and LIme Scale Removal .....................................16
Strange Sounds ........................................................16-17
TROUBLESHOOTING CHECKLIST ......................................17
Not Enough or No Water .................................................17
Water Is Too Hot .............................................................17
Water Heater Makes Strange Sounds ............................17
Leakage Checkpoints .....................................................17
If You Cannot Identify or Correct the Source of Malfunction ...........17
WARRANTY ...........................................................................18
NOTES ...................................................................................19
taBle of contents