A.O. Smith DSE-5 THRU DSE-120 Installation And Operaion Manual
Dura-power electric models comercial water heater
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Also See for DSE-5 THRU DSE-120:
- Instruction manual (40 pages) ,
- Service handbook (84 pages)
Table of Contents
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Dura-Power Electric Models
DSE-5 THRU DSE-120 COMMERCIAL WATER HEATERS
•
Installation
•
Operation
•
Maintenance
•
Checklist
•
Limited Warranty
CAUTION
TEXT PRINTED OR OUTLINED IN RED CONTAINS
INFORMATION RELATIVE TO YOUR SAFETY. PLEASE READ
THOROUGHLY BEFORE INSTALLING AND USING THIS
APPLIANCE.
A DIVISION OF A.O.SMITH CORPORATION
RENTON, WASHINGTON
www.hotwater.com
KEEP THIS MANUAL WITH THE HEATER FOR FUTURE REFERENCE.
WHENEVER MAINTENANCE ADJUSTMENTS OR SERVICE IS REQUIRED.
PART NO. 60047-004 REV.6
PRINTED IN U.S.A. 700
SUPERSEDES PART NO. 60047-004 REV.5
1
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Table of Contents
Related Manuals for A.O. Smith DSE-5 THRU DSE-120
Summary of Contents for A.O. Smith DSE-5 THRU DSE-120
- Page 1 Dura-Power Electric Models DSE-5 THRU DSE-120 COMMERCIAL WATER HEATERS • Installation • Operation • Maintenance • Checklist • Limited Warranty CAUTION TEXT PRINTED OR OUTLINED IN RED CONTAINS INFORMATION RELATIVE TO YOUR SAFETY. PLEASE READ THOROUGHLY BEFORE INSTALLING AND USING THIS APPLIANCE.
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Page 2: Recovery Capacity
DIMENSIONS Tank Capacity Maximum in Gallons KW Input RECOVERY CAPACITY STANDARD BTU/ 30° KW INPUT HOUR 10,239 20,478 30,717 40,956 51,195 61,434 81,912 102,390 122,868 153,585 184,302 60** 204,780 75** 255,975 1025 90** 307,170 1229 * Figured at 1KW (3413 Btu) = 4.1 Gallons at 100°F temperature rise. To determine recovery rate per minute, divide recovery rate per hour by 60. -
Page 3: Table Of Contents
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. -
Page 4: Getting To Know Your Water Heater
GETTING TO KNOW YOUR WATER HEATER Below is an illustration of the water heater with its features called out. The text of this manual will refer to the items shown. FIGURE 1... -
Page 5: General Safety Information
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. -
Page 6: Relief Devices
RELIEF DEVICES An unplugged 3/4” relief valve opening is provided for installing temperature and pressure relief valve. CAUTION: TO REDUCE THE RISK OF EXCESSIVE PRESSURES AND TEMPERATURE IN THIS WATER HEATER INSTALL TEMPERATURE AND PRESSURE PROTECTIVE EQUIPMENT REQUIRED BY LOCAL CODES but not less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection... -
Page 7: Piping Diagrams
PIPING DIAGRAM ONE OR TWO TEMPERATURE - ONE HEATER CAUTION: IF BUILDING COLD WATER SUPPLY HAS A BACK-FLOW PREVENTER, CHECK VALVE OR WATER METER WITH CHECK VALVE, PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED. *PIPE TO OPEN DRAIN. - Page 8 ONE OR TWO TEMPERATURE - THREE HEATERS CAUTION: IF BUILDING COLD WATER SUPPLY HAS A BACK-FLOW PREVENTER, CHECK VALVE OR WATER METER WITH CHECK VALVE, PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED. *PIPE TO OPEN DRAIN. INSTALL IN ACCORDANCE WITH ALL LOCAL CODES.
- Page 9 MEDIUM TEMPERATURE - ONE HEATER VERTICAL STORAGE TANK DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE CONTROL WARNING ON PAGES 17 & 18. IF HIGHER PREHEAT TEMPERATURES ARE NECCESARY TO OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES..
- Page 10 MEDIUM TEMPERATURE - TWO HEATERS VERTICAL STORAGE TANK MEDIUM TEMPERATURE - TWO HEATERS HORIZONTAL STORAGE TANK RETURN LINE FROM FIXTURE CIRCULATING LOOP (IF USED) SHOULD CONNECT TO ANY OPENING NEAR BOTTOM OF TANK. * PIPE RELIEF VALVE TO OPEN DRAIN. †...
- Page 11 MEDIUM TEMPERATURE - THREE HEATERS VERTICAL STORAGE TANK DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE CONTROL WARNING ON PAGES 17 & 18. IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES..
- Page 12 MEDIUM TEMPERATURE - FOUR HEATERS VERTICAL STORAGE TANK MEDIUM TEMPERATURE - FOUR HEATERS HORIZONTAL STORAGE TANK CAUTION: IF BUILDING COLD WATER SUPPLY BACK-FLOW PREVENTER, CHECK VALVE OR WATER METER WITH CHECK VALVE, PROVISIONS THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED.
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Page 13: Electrical
ELECTRICAL 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 version of NFPA-70, The National Electrical Code which may be ordered from: American National Standards Institute, 1430 Broadway, New York, NY 10018. -
Page 14: Amperage Table/Overcurrent Protection
AMPERAGE TABLE/OVERCURRENT PROTECTION This table provides the total connected heating element load in amperes for branch circuit conductor and over current protection sizing. Single-phase heaters are two wire circuits. Three-phase heaters are three wire circuits. In addition to the foregoing a ground conductor may be required. - Page 15 SMALL COMMERCIAL WIRE DIAGRAM 208-240V / 3PH SMALL COMMERCIAL WIRE DIAGRAM 208-240V / 3-1PH...
- Page 16 3-1 PHASE CONVERSIONS In the case where the unit is phase convertible and it has only one contactor, jumper wires (provided) must be added according to the phase of the supply voltage. See the diagram below. For single-phase connection, jumpers A-C and B-D must be added. For three-phase connection, jumper B-C must be added.
- Page 17 SMALL COMMERCIAL WIRE DIAGRAM SINGLE PHASE SMALL COMMERCIAL WIRE DIAGRAM 300-600V / 3PH...
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Page 18: Operation
OPERATION GENERAL Never operate the heating elements without being certain the water heater is filled with water, and a temperature and pressure relief valve is installed in the relief valve opening. FILLING Turn off the electrical disconnect switch. Close the water heater drain valve by turning knob to right (clockwise). -
Page 19: Draining
Lime scale should be removed by dissolving the accumulation in UN•LIME® delimer. UN•LIME is a non-muriatic delimer, available from A.O. Smith Water Products Company, Product Service Division, 5621 W. 115th ST., Alsip, IL. 60803. Do not use muriatic or hydrochloric acid base deliming solutions to remove lime scale from the elements. -
Page 20: Checklist
Remove the bolts from each element. Remove the elements from the openings. • Use a twisting, pulling action to remove elements scaled beyond size of the tank openings. • Brush loose scale from elements. Lime scale removal. • Place limed ends of heating elements into UN•LIME delimer and allow scale to dissolve. -
Page 21: Replacement Parts
Replacement parts may be ordered through dealers, authorized servicers or distributors. Refer to Yellow Pages for where to call or contact the A.O. Smith Water Products Company, Product Service Division, 5621 W. 115th Street, Alsip, IL 60803, 1-800- 433-2545 When ordering parts, specify complete model no., serial no., (see rating plate), quantity and name of part desired. -
Page 22: Leakage Checkpoints
LEAKAGE CHECKPOINTS INSTRUCTIONS: USE THIS ILLUSTRATION AS A GUIDE WHEN CHECKING FOR SOURCES OF WATER LEAKAGE. YOU OR YOUR DEALER MAY BE ABLE TO CORRECT WHAT APPEARS TO BE A PROBLEM. ANODE Drain valve leakage could be from the valve itself. -
Page 23: Limited Warranty
Some government agencies are requiring energy efficient standards for water heaters. In the event regulations prohibit sale of a model of equivalent size and construction, A.O. Smith will provide a model which complies with the regulations of your area, in which case the consumer will be charged the difference in price between the like replacement and the energy efficient model required. - Page 24 REPLACEMENT PARTS 5621 W. 115TH STREET, ALSIP, IL 60803 Phone: 800-433-2545 Fax: 800-433-2515 www.hotwater.com E-Mail: parts@hotwater.com...