Table Of Contents; Foreword; Approvals; Model & Rating Plate - A.O. Smith DSE-5 THRU DSE-120 Installation And Operaion Manual

FOREWORD

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.
Particular attention should be given to the installation of
thermometers at the locations indicated in the diagrams as
these are necessary for checking the operation of the heater.
In addition to these instructions, the equipment shall be installed
in accordance with those installation regulations in force in the
local area where installation is to be made. Authorities having
jurisdiction shall be consulted before installations are made.
BE SURE TO TURN OFF POWER WHEN WORKING ON OR
CONTENTS
ROUGH-IN-DIMENSIONS ......................................
RECOVERY CAPACITY .......................................
FOREWORD .........................................................
APPROVALS .......................................................
MODEL & RATING PLATE ....................................
GETTING TO KNOW YOUR WATER HEATER ......
GENERAL SAFETY INFORMATION
Insulation Blankets ..............................................
External Damage .................................................
INSTALLATION
Required Ability ...................................................
General ................................................................
Location ...............................................................
Connections ........................................................
Relief Devices .....................................................
Temperature Limiting Control ...............................
Hydrogen Gas ....................................................
PIPING DIAGRAMS .............................................. 7-12
ELECTRICAL
General ................................................................
Branch Circuit ......................................................

APPROVALS

All models bear the
National Sanitation
Foundation seal of
125 PSI Working Pressure
ASME
(65 thru 120 Gallons)
150 PSI Working Pressure
PAGE
2
2
3
3
3
4
5
5
5
5
5
6
6
6
6
13
13
approval.
All models are
listed
by Underwriters'
Laboratories, Inc.
(5 thru 50 Gallons)
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. SEE
PAGE 14.
DO NOT TEST ELECTRICAL SYSTEM BEFORE HEATER IS
FILLED WITH WATER, FOLLOW START UP PROCEDURE ON
PAGE 17.
The principal components of the heater are identified on page
4. The model and rating plate on page 3 interprets certain
markings into useful information. Both of these references
should be used to identify the heater, its components and
optional equipment.
Amperage Table/Overcurrent Protection ........ 14
Heater Circuits ................................................ 14
Control Circuit ................................................. 14
Power Circuit .................................................. 14
Wiring Diagram ................................................ 15-17
OPERATION
General ............................................................ 17
Filling ................................................................ 17
Start Up ........................................................... 17
Temperature Regulation .................................. 17-18
Draining ........................................................... 18
MAINTENANCE
General ............................................................ 18
Flushing ........................................................... 18
Sediment Removal ........................................... 18
Lime Scale Removal ........................................ 18-19
Checklist .......................................................... 19-20
Replacement Parts .......................................... 20
LEAKAGE CHECKPOINTS ............................... 21
LIMITED WARRANTY ...................................... 22
MODEL & RATING PLATE
3
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