Instruction/ maintenance manual of the product DRE A.O. Smith
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1 COMMERCIAL ELECTRIC W A TER HEA TERS CAUTION TEXT PRINTED OR UNDERLINED IN RED CONT AINS INFORMA TION RELA TIVE TO YOUR SAFETY . PLEASE READ THOROUGHL Y BEFORE A TTEMPTING ANY CONVERSION. PRINTED IN U.S.A. 0906 P ART NO. 196674-001 A DIVISION OF A.O.
2 Rough-in-Dimensions Model Number T ank Cap acity in Gallons A B Inlet/Outlet DRE/DVE-52 50 55 1/4 21 3/4 1 1/4 DRE/DVE-80 80 59 1/2 25 1/4 1 1/4 DRE/DVE-120 1 19 62 1/4 29 1/2 1 1/4 Get to know your.
3 Contents Page ROUGH-IN-DIMENSIONS ....................................... 2 GET TO KNOW YOUR W ATER HEA TER ............... 2 RECOVERY CAP ACITY ........................................... 3 APPROV ALS ...............................................
4 Model and Rating 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 THA T ALL W A TER PIPING AND THE ELECTRICAL WIRING BE INST ALLED AND CONNECTED AS SHOWN IN THE DIAGRAMS.
5 Inst allation REQUIRED ABILITY INST ALLA TION OR SERVICE OF THIS W A TER HEA TER REQUIRES ABILITY EQUIV ALENT TO THA T OF A LICENSED TRADESMAN IN THE FIELD INVOL VED. PLUMBING AND ELECTRICAL WORK ARE INVOL VED. GENERAL The installation must conform to these instructions and the local code authority having jurisdiction.
6 The pressure setting of the relief valve should not exceed the pressure capacity of any component in the system. The temperature setting of the relief valve should not exceed 210°F . An unplugged 3/4" relief valve opening is provided for installing temperature and pressure relief valve.
7 Piping Diagrams ONE TEMPERA TURE WITH CIRCULA TING LOOP INSERT B V ACUUM RELIEF V AL VE. INST ALL PER LOCAL CODES. CAUTION: IF BUILDING COLD W ATER SUPPL Y HAS A BACK- FLOW PREVENTER, CHECK V A L VE OR WA TER METER WITH CHECK V A L VE. PROVISIONS FOR THERMAL EXP ANSION OF W A TER IN THE HOT W A TER SYSTEM MUST BE PROVIDED.
8 INSER T B V ACUUM RELIEF V AL VE. INST ALL PER LOCAL CODES. DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERA TURE A T FIXTURES. SEE WA TER TEMPERA TURE CONTROL WARNING ON P AGE 6. IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY T O O BTAIN ADEQUATE BOOSTER OUTPUT , A DD AN ANTI-SCALD V AL VE FOR HOT WA TER SUPPLIED TO FIXTURES.
9 INSER T B V ACUUM RELIEF V AL VE. INST ALL PER LOCAL CODES. DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE TEMPERA TURE AT FIXTURES. SEE W A TER TEMPERATURE CONTROL WARNING ON P AGE 6. IF HIGHER PREHEAT TEMPERA TURES ARE NECESSARY TO OBT AIN ADEQUA TE BOOSTER OUTPUT , ADD AN ANTI-SCALD VA LVE FOR HOT WA TER SUPPLIED T O FIXTURES.
10 ONE TEMPERA TURE ONE HEA TER VERTICAL ST ORAGE T ANK FORCED CIRCULA TION WITHOUT BUILDING RECIRCULA TION TWO TEMPERA TURE WITH MIXING V AL VE AND CIRCULA TING LOOP INSER T B V ACUUM RELIEF V ALVE.
11 INSER T B V ACUUM RELIEF V ALVE. INST ALL PER LOCAL CODES. DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE TEMPERA TURE A T FIXTURES. SEE WA TER TEMPERA TURE CONTROL WARNING ON P AGE 6. IF HIGHER PREHEA T TEMPERA TURES ARE NECESSAR Y TO OBT AIN ADEQUA TE BOOSTER OUTPUT , ADD A N ANTI-SCALD VAL VE FOR HOT W A TER SUPPLIED TO FIXTURES.
12 DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE TEMPERA TURE A T FIXTURES. SEE WA TER TEMPERA TURE CONTROL WARNING ON P AGE 6. IF HIGHER PREHEA T TEMPERA TURES ARE NECESSAR Y TO OBT AIN ADEQUA TE BOOSTER OUTPUT , ADD A N ANTI-SCALD VAL VE FOR HOT W A TER SUPPLIED TO FIXTURES.
13 INSER T B V ACUUM RELIEF V AL VE. INST ALL PER LOCAL CODES. DANGER TEMPERA TURE SETTING SHOULD NOT EXCEED SAFE TEMPERA TURE A T FIXTURES. SEE WA TER TEMPERA TURE CONTROL WARNING ON P AGE 6. IF HIGHER PREHEA T TEMPERA TURES ARE NECESSAR Y TO OBT AIN ADEQUA TE BOOSTER OUTPUT , ADD A N ANTI-SCALD VAL VE FOR HOT W A TER SUPPLIED TO FIXTURES.
14 MANIFOLD KITS ALL DIMENSIONS IN INCHES. TWO HEA TERS Part Model Number H W D A DRE/DVE-52 9003429 66 1/4 56 3/4 27 1/4 13 1/4 DRE/DVE-80 9003429 70 1/2 60 1/4 31 1/4 9 3/4 DRE/DVE-120 9003429 73 1/.
15 BRANCH CIRCUIT The branch circuit wire and fuse size should be established through reference to the current version of the National Electrical Code or any other locally approved source in conjunction with the heater amperage rating. Branch circuit wires should have a temperature rating no less than 75°C.
16 Full Load Current in Amperes KW Number of Element Single Phase Three Phase No. of No. of Input Elements W attage 208V 240V 277V 480V 208V 240V 480V Thermostat s Fuses 6 2000 28.8 25.0 21.7 12.5 16.7 14.4 7.2 9 3000 43.3 37.5 32.5 18.8 25.0 21.7 10.
17 DVE CONTROL CIRCUIT DIAGRAMS.
18 POWER CIRCUIT The power circuit wiring is 12 Awg. AWM or TEW type, rated 600 volts, 105°C. Power circuit fusing consists of three 30 amp class G fuses for each contactor .
19 CONVERSION TO SINGLE PHASE When the heater is shipped for connection to a three-phase electrical service, it may be connected to a single-phase electrical service of the same voltage by: 1. Disconnect blue wires and yellow wires from terminal L3. 2.
20 HEA TER CIRCUITS—DRE MODELS The water heater's electrical components are pictured and identified on pa ge 2. The following describes the heater circuits and includes wiring diagrams. All heater circuits are designed for 60/50 hertz alternating current.
21 CONVERSION TO SINGLE PHASE When the heater is shipped for connection to a three-phase electrical service, it may be connected to a single-phase electrical service of the same voltage by: 1. Disconnect blue wires and yellow wires from terminal L3. 2.
22 Operation GENERAL Never turn on power to the water heater without being certain the water heater is filled with water , and a temperature and pressure relief valve is installed in the relief valve opening. DO NOT TEST ELECTRICAL SYSTEM BEFORE HEA TER IS FILLED WITH W A TER.
23 MAINTENANCE SCHEDULE Component Operation Interval Required T ank Flushing Periodically Un•Lime ® Element s Lime Scale As needed delimer & Removal element gaskets, Part Anode Inspect As needed T ank flushing should be performed in accordance with the above schedule.
24 12. Attach element wires to connection point s from which they were removed. 13. Follow FILLING instructions to restore hot water service. • Check for water leaks around elements and proper operation when heater is filled. • Close the front panel.
25 Leakage Checkpoint s INSTRUCTIONS: USE THIS ILLUSTRA TION AS A GUIDE WHEN CHECKING FOR SOURCES OF W A TER LEAKAGE. YOU OR YOUR DEALER MA Y BE ABLE TO CORRECT WHA T APPEARS TO BE A PROBLEM. Where possible, remove or lift top cover to examine threads of fittings installed into tank for evidence of leakage.
26 A. O. Smith Corporation, the warrantor, extends the following LIMITED W ARRANTY to the owner of this water heater: 1. THE T ANK If the glass-lined tank in this water heater shall prove upon examina.
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28 McBee, South Carolina 29101 Phone: 1-800-527-1953 Fax: 800-433-2515 w w w .hotwater .com e-mail: p ar ts@hotwater .com.
An important point after buying a device A.O. Smith DRE (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought A.O. Smith DRE yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data A.O. Smith DRE - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, A.O. Smith DRE you will learn all the available features of the product, as well as information on its operation. The information that you get A.O. Smith DRE will certainly help you make a decision on the purchase.
If you already are a holder of A.O. Smith DRE, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime A.O. Smith DRE.
However, one of the most important roles played by the user manual is to help in solving problems with A.O. Smith DRE. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device A.O. Smith DRE along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
