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FOREWORD

Thank you for buying this energy efficient water heater from
A.O. Smith Water Products Company.  We appreciate your
confidence in our products.  Detailed installation diagrams are
in this manual.  These diagrams will serve to provide the installer
with a reference for the materials and method of piping
suggested.  IT IS NECESSARY THAT ALL WATER PIPING AND
THE ELECTRICAL WIRING BE INSTALLED AND CONNECTED
AS SHOWN IN THE DIAGRAMS.

In addition to these instructions, the equipment shall be installed
in accordance with those installation regulations in force in the
local area where the installation is to be made.  Authorities having
jurisdiction shall be consulted before installations are made.

GENERAL SAFETY

INSTRUCTIONS

BE SURE TO TURN OFF POWER WHEN WORKING ON OR
NEAR THE ELECTRICAL SYSTEM OF THE HEATER.  NEVER
TOUCH ELECTRICAL COMPONENTS WITH WET HANDS OR
WHEN STANDING IN WATER.  WHEN REPLACING FUSES
ALWAYS USE THE CORRECT SIZE FOR THE CIRCUIT.

The principal components of the heater are identified on page 5.
The model and rating plate on page 6 interprets certain markings
into useful information.  Both of these references should be
used to identify the heater, its components and optional
equipment.

  WARNING

FOR CALIFORNIA INSTALLATION THIS WATER HEATER MUST
BE BRACED, ANCHORED, OR STRAPPED TO AVOID FALLING
OR MOVING DURING AN EARTHQUAKE. SEE INSTRUCTIONS
FOR CORRECT INSTALLATION PROCEDURES.
INSTRUCTIONS MAY BE OBTAINED FROM YOUR LOCAL
DEALER, WHOLESALER, PUBLIC UTILITIES OR CALIFORNIA’S
OFFICE OF STATE ARCHITECT, 400 P STREET, SACRAMENTO,
CA 95814.

INSULATION BLANKETS

Insulation blankets available to the general public for external
use on electric water heaters are not approved for use on your
A.O. Smith water heater.  The purpose of an insulation blanket is
to reduce the standby heat loss encountered with storage tank
water heaters.  Your A. O. Smith water heater meets or exceeds
the National Appliance Energy Act standards with respect to
insulation and standby loss requirements, making an insulation
blanket unnecessary.

  WARNING

Should you choose to apply an insulation blanket to this heater,
you should follow these instructions (See page 5 for identification
of components mentioned below).  Failure to follow these
instructions can result in fire, asphyxiation, serious personal
injury or death.

Do not cover the temperature & pressure relief valve.

Do not cover the instruction manual.  Keep it on the side of
     the water heater or nearby for future reference.

Do obtain new labels from A. O. Smith for placement on the
blanket directly over the existing labels.

EXTENDED NON-USE PERIODS

  CAUTION

HYDROGEN GAS CAN BE PRODUCED IN A HOT WATER
SYSTEM SERVED BY THIS HEATER THAT HAS NOT BEEN USED
FOR A LONG PERIOD OF TIME (GENERALLY TWO WEEKS OR
MORE).  HYDROGEN GAS IS EXTREMELY FLAMMABLE. 

 To

reduce the risk of injury under these conditions, it is
recommended that the hot water faucet be opened for several
minutes at a  nearby kitchen sink before using any electrical
appliance connected to the hot water system.  If hydrogen is
present, there will probably be an unusual sound such as air
escaping through the pipe as the water begins to flow.  

THERE

SHOULD BE NO SMOKING OR OPEN FLAME NEAR THE
FAUCET AT THE TIME IT IS OPENED.

  

CAUTION

AN ELECTRICAL GROUND IS REQUIRED TO REDUCE RISK
OF ELECTRIC SHOCK OR POSSIBLE ELECTROCUTION.  THE
GROUND SCREW AT THE JUNCTION BOX IS FOR BONDING
THE HEATER TO A GROUNDED SERVICE ENTRANCE
CONDUCTOR, A GROUNDED SERVICE ENTRANCE RACEWAY,
OR AN EARTH GROUNDING ELECTRODE CONDUCTOR.

  WARNING

FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT
IN SERIOUS PERSONAL INJURY OR DEATH.

REQUIRED ABILITY

INSTALLATION OR SERVICE OF THIS WATER HEATER
REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED
TRADESMAN IN THE FIELD INVOLVED. PLUMBING AND
ELECTRICAL WORK ARE REQUIRED.

GENERAL

The installation must conform to these instructions, the local
code authority having jurisdiction, and the requirements of the
power company.  In the absence of code requirements follow
the latest edition of  NFPA-70, The National Electrical Code which
may be ordered from: National Fire Protection Association,
1 Batterymarch Park, Quincy, MA 02269.

LOCATION

The water heater should be located as close as possible to/or
centralized to the water piping system. The water heater should
be located in an area not subject to freezing temperatures.

The heater should be located in an area where leakage of the
tank or connections will not result in damage to the area adjacent
to the heater or to lower floors of the structure.

When such locations cannot be avoided, a suitable drain pan
should be installed under the heater.

Such pans should be at least two inches deep, have a minimum
length and width of at least two inches greater than the diameter
of the heater and should be piped to an adequate drain.

Drain pans suitable for these heaters are available from your
distributor or A. O. Smith Products Service Division,
5621 W. 115th Street, Alsip, IL 60803.

Summary of Contents for DEL

Page 1: ...tion Maintenance Leakage Checkpoints Limited Warranty A DIVISION OF A O SMITH CORPORATION McBee South Carolina USA www hotwater com CAUTION TEXT PRINTED OR OUTLINED IN RED CONTAINS INFORMATION RELATIV...

Page 2: ...38 128 115 110 5000 5000 GPH 113 101 75 68 56 51 45 41 38 34 32 10 LPH 426 384 284 256 213 192 170 153 142 128 122 6000 6000 GPH 135 122 90 81 68 61 54 49 45 41 39 12 LPH 511 460 341 307 256 230 205 1...

Page 3: ...ot cover the instruction manual Keep it on the side of the water heater or nearby for future reference Do obtain new labels from A O Smith for placement on the blanket directly over the existing label...

Page 4: ...electrician size the branch circuit at 125 percent of the heater rating and further increase wire size as necessary to compensate for voltage drop in long runs CALCULATING AMPERAGE OVERCURRENTPROTECTI...

Page 5: ...2 12 2 THW T TW THWN XHHW UF USE 12 15 15 10 25 25 8 30 40 6 40 50 4 55 65 3 65 75 2 75 90 1 85 100 FACTORY WIRED FIELD WIRING WHITE FOR 120V For ambient temperatures over 30 C 86 F see Correction Fa...

Page 6: ...DEVICES FOR HOT WATER SUPPLY SYSTEMS ANSI Z21 22 This valve must be marked with a maximum set pressure not to exceed the marked maximum working pressure of the water heater Install the valve into an...

Page 7: ...E UPPER THERMOSTAT BEHIND JUNCTION BOX DOOR ADJUSTABLE LOWER SINGLE THERMOSTAT Figure 3 shows the approximate time to burn relationship for normal adult skin The thermostats on your water heater have...

Page 8: ...TER PASSING OUT OF THE VALVE DURING THIS CHECKING OPERATION MAY BE EXTREMELY HOT It is recommended that the drain valve on this unit be opened once a month and 1 to 2 gallons of water be allowed to dr...

Page 9: ...ure Excessive water temperature Faulty relief valve Excessive water pressure is the most common cause of relief valve leakage It is often caused by a closed system A check valve in the inlet system wi...

Page 10: ...tricity and drain tank to perform procedure Water leaks at the elements may be due to 1 Defective element which leaks at terminals or thru flange Replace element 2 Loose element gasket leak a Screw in...

Page 11: ...r any misuse abuse including freezing or alteration of it any operation of it in a modified form or any attempt to repair tank leaks will void this warranty 4 SERVICE and REPAIR EXPENSE Under this lim...

Page 12: ...12 5621 W 115TH STREET ALSIP IL 60803 Phone 800 433 2545 Fax 800 433 2515 www hotwater com e mail parts hotwater com...

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