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A.O. Smith Dve-52/80/120 manuel d'utilisation

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  • Page 1

    1 Instruction Manual PRINTED IN THE U . S .A 0908 196674-002 PLACE THESE INSTRUCTIONS ADJACENT TO HEA TER AND NOTIFY OWNER T O KEEP FOR FUTURE REFERENCE. COMMERCIAL ELECTRIC W A TER HEA TERS Th ank you for buy in g th is ener gy ef ci ent wat er hea te r . We appreciate your condence in our products. MODEL S D RE- 52 / 8 0/1 20 SERIES 1 00 &a[...]

  • Page 2

    2 SAFE INS T ALLA TION, USE, AND SER VICE The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. Read and obey all [...]

  • Page 3

    3 GENERAL SAFETY INFORMA TION When servicing this unit, verify the power to the unit is turned off prior to opening the control cabinet door . PRECAUTIONS DO NOT USE THIS APPLIANCE IF ANY P ART HAS BEEN UNDER W A TER. Immediately call a qualied service technician to inspect the appliance and to replace any part of the control system which has be[...]

  • Page 4

    4 Thank Y ou 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 - Na[...]

  • Page 5

    5 DIMENSIONS AND CAP ACITIES DA T A Model Number T ank Capacity in Gallons (Liters) A - Inches (mm) B - Inches (mm) C - Inches (mm) Inlet/Outlet DRE/DVE-52 50 (189.3) 55 3/4 (1416) 21 3/4 (552) 27 (685) 1 1/4 DRE/DVE-80 80 (302.8) 60 1/4 (1350) 25 1/2 (648) 31 (787) 1 1/4 DRE/DVE-120 1 19 (450.5) 62 1/4 (1581) 29 1/2 (749) 35 (889) 1 1/4 DRE/DVE MO[...]

  • Page 6

    6 APPROV ALS MODEL AND RA TING All models meet National Sanitation Foundation NSF-5 requirements. All models are listed by Underwriters Laboratories Inc.[...]

  • Page 7

    7 FEA TURES AND COMPONENTS ELECTRONIC CONTROL MODELS FIGURE 1[...]

  • Page 8

    8 FEA TURES AND COMPONENTS SURF ACE MOUNT CONTROL MODELS FIGURE 2[...]

  • Page 9

    9 F ACTS TO CONSIDER ABOUT THE LOCA TION Carefully choose a location for the new water heater . The placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance. Whether replacing an old water heater or putting the water heater in a new location, the following critical [...]

  • Page 10

    10 INST ALLA TION REQUIRED ABILITY Inst allat ion and servic e of this water heate r requires abil ity equiv alent to that of a qualied agency (page 2) in the eld involved. Plumbing and electrical work is required. GENERAL The installation must conform with these instructions and the lo cal code authority having jurisdiction and the requireme[...]

  • Page 11

    11 m an uf ac t ur e r . T he v al ve i s ce r t i f ie d by a na ti o na ll y re c o gn iz ed te stin g lab or ator y t hat mai nta ins p er iod ic in spe cti on o f p rod uct io n of l is te d e q ui pm e nt o f ma te r ia ls as m ee ti n g t he re q ui re m en ts f or Re li ef Val ve s f or H ot W at er Su pp l y S ys te ms , A N SI Z 21. 2 2 ?[...]

  • Page 12

    12 ELECTRICAL GENERAL 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 local codes, the installation must comply with the current editions of the National Electrical Code, NFP A 70 or the Canadian Electrical Code CSA C22.1. An electri[...]

  • Page 13

    13 AMPERAGE T ABLE/OVERCURRENT PROTECTION The tables above provides the total connected heating element load in amperes for branch circuit conductor and overcurrent protection sizing. Single-phase heaters are two wire circuits. Three-phase heaters are three wire circuits. In addition to the foregoing, a grounded conductor is required. The rating of[...]

  • Page 14

    14 CCB (CENTRAL CONTROL BOARD) CIRCUIT BOARD CONTROL CIRCUIT DIAGRAM - ELECTRONIC CONTROL MODELS FIGURE 3. WIRING DIAGRAMS[...]

  • Page 15

    15 DIAGRAM 1. WIRING DIAGRAMS POWER CIRCUIT DIAGRAMS - ELECTRONIC CONTROL MODELS The water heater ’s electrical components are pictured and identied on page 7. The following describes the heater circuits and includes wiring diagrams. All heater circuits are designed for 60/50 hertz alternating current. The water heater circuit wiring is 12 AWG[...]

  • Page 16

    16 WIRING DIAGRAMS NINE ELEMENT - SINGLE AND THREE PHASE 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. Reconnect all blue wires to terminal L1 (wi[...]

  • Page 17

    17 WIRING DIAGRAMS POWER CIRCUIT DIAGRAMS - SURF ACE MOUNT CONTROL MODELS The water heater ’s electrical components are pictured and identied on page 8. The following describes the heater circuits and includes wiring diagrams. All heater circuits are designed for 60/50 hertz alternating current. The water heater circuit wiring is 12 AWG, A WM,[...]

  • Page 18

    18 WIRING DIAGRAMS CONVERSION TO SINGLE PHASE When the heater is ship ped for connecti on to a three -phas e electrica l service, it may be connected to a single-phase electrical service of the same voltage by: 1. Disconnect blue wires from terminal L2. 2. Connect all blue wires to terminal L1 (with black wires). 3. Disconnect all red wires from te[...]

  • Page 19

    19 OPERA TION GENERAL Refer to the Features and Components section of this manual (pages 7 & 8) for the location of components mentioned in the instructions that follow . NE VER t urn on power to the wate r h eater w ithout bein g c er tai n t he wa ter hea ter is  ll ed w it h wa ter and a te mp era tu re a nd p re ssu re reli ef valve is i[...]

  • Page 20

    20 HIGH TEMPERA TURE LIMIT CONTROLS (ECO) Both the ELECTRONIC CONTROL and SURF ACE MOUNT CONT ROL model water heater s are equipp ed with one or more ECO (energy cut off) non adjustable high temperature limit control(s). An ECO is a normally closed switch that opens (activates) on a rise in temperature. If the ECO switch contacts open (activate) du[...]

  • Page 21

    21 THERMOS T A T SETTINGS - ELECTRONIC CONTROLS Th ese mode ls are equ ipp ed with an elec tr oni c con tr ol s ys tem . T he co ntr ol sy ste m sen se s temp er at ure from a fac tor y ins ta lle d Imm ers io n T emperature Probe (see Figure 1). The “Operating Set Point” is ad jus te d to con t ro l wat e r te mpe r at u re . Th is is an adj u[...]

  • Page 22

    22 Menu : The left Operat ional Button is pres sed to enter the Main Menu where all control system menus are accessed. See T able 3 for a list of control system menus. Help: The right Operational Button is pressed to access instructions and explanations for user settings, Operating States, Status Icons, manufacturer ’ s web address, technical [...]

  • Page 23

    23 TEMPERA TURES MENU Operating Set Point User adjustable setting 90°F to 190°F range; factory default is 120°F . When the water temperature sensed by the control system from the immersion T emperature Probe reaches the Operating Set Point the control system will end the heating cycle. A call for heat will be activated again when the water tempe[...]

  • Page 24

    24 Differential Settings Adjustable user setting(s) 1°F to 20° range; factory default is 2°F . The wa te r heat ers co ver ed i n this I ns tr uc tio n Manu al will hav e 3, 6 or 9 hea ti ng elem en ts . Eac h gro up of 3 heat in g ele me nt s is on e “Ba nk ” of heating elements. Heating elements are energized in Banks of 3. Each Ba nk of h[...]

  • Page 25

    25 HEA TER ST A TUS MENU This menu displays non adjustable operational information. This menu con tain s more inform atio n that can be disp laye d on one scre en of the LCD display . Use the Up & Down Buttons to navigate to the bottom of this menu. T op of Menu Bottom of Menu Status Displays the current Operating State of the control system. I[...]

  • Page 26

    26 “Normal Operation All Day” - “Economy Mode All Day” and “Normal Operation Between.” Only one Operating Mode can be active, the factory default is Normal Operation All Day . Normal Operation All Day: When this operating mode is active the normal Operating Set Point is used for the entire day . Economy ModeAll Day:[...]

  • Page 27

    27 ECONOMY MODE SETTINGS Time Clock Settings ACTION DISPLA Y From the Desktop Screen navigate to the Economy Mode Setup menu. Use the Up/Down buttons to select (highlight in black) Current T ime sub menu. Press the Operational Button underneath “CHANGE” to enter the Current T ime sub menu. Use the Up/Down buttons to select the “Weekday” set[...]

  • Page 28

    28 ECONOMY MODE SETTINGS Daily Operating Mode Settings ACTION DISPLA Y Economy Mode All Day: From the Economy Mode Setup menu use the Up/Down buttons to select (highlight in black) the Daily sub menu for “Sun.” Press the Operational Button underneath “CHANGE” to enter this menu. Use the Up/Down buttons to select (highlight in black) the “[...]

  • Page 29

    29 ALARM OUTPUT SETUP MENU Perm its user to set the condit ion (from a list of option s) for when th e CC B’ s int eg ra l a la rm ou tp ut re la y wi ll be ene rgi ze d. Ala rm rel ay co nn e ct io ns ( co mm on , no rm al ly ope n, no rm all y c lo se d) a re lo ca ted on t he J 3 ter mi nal st rip o n the C CB . Al ar m out p ut r el ay c on t[...]

  • Page 30

    30 Elapsed Time T otal accumulated time the control system (water heater) has been energized. T otal Heating Time T otal accumulated time the control system has been in the heating mode. IE: any heating elements have been energized. Bank # Cycles T otal accumulated count of heating cycles for each Bank of heating elements. Bank # On Time T otal acc[...]

  • Page 31

    31 Restore Factory Defaults ACTION DISPLA Y From the Main Menu use the Up/Down buttons to select (highlight in black) the “Restore Factory Defaults” menu. Press the Operational Button underneath “SELECT .” The Restore Factory Defaults menu will be displayed. From the Restore Factory Defaults menu press the Operational Button underneath “Y[...]

  • Page 32

    32 its diameter is 3/8” (1 cm) of an inch, or annually which ever is rst. Aggressive, very hot and softened water causes rapid consumption of the anode requiring frequent inspections. Call the toll free number on the back cover of this manual for information on obtaining replacement anode rods. MAINTENANCE SCHEDULE Component Operation Interval[...]

  • Page 33

    33 TROUBLESHOOTING CHECKLIST CHECKLIST Before calling for service, check the following points to see if the cause of trouble can be identied and corrected. Reviewing this checklist may eliminate the need of a service call and quickly restore hot water service. See Figures 1 and 2 in this manual to identify and locate water heater components. NOT[...]

  • Page 34

    34 LEAKAGE CHECKPOINTS INSTRUCTIONS: USE THIS ILLUSTRA TION AS A  GUIDE WHEN CHECKING FOR SOURCES OF W A TER LEAKAGE. All water which appears at the heater bottom or on the surrounding floor may be caused by condensation, loose connections or relief valve operation and leakage. Do not replace the heater until [...]

  • Page 35

    35 PIPING DIAGRAMS ONE TEMPERA TURE WITH CIRCULA TING LOOP INSERT B V ACUUM RELIEF V ALVE. INST ALL PER LOCAL CODES. *PIPE TO OPEN DRAIN INST ALL IN ACCORDANCE WITH ALL LOCAL CODES.[...]

  • Page 36

    36 PIPING DIAGRAMS INSERT B V ACUUM RELIEF V ALVE. INST ALL PER LOCAL CODES.[...]

  • Page 37

    37 PIPING DIAGRAMS INSERT B V ACUUM RELIEF V ALVE. INST ALL PER LOCAL CODES.[...]

  • Page 38

    38 PIPING DIAGRAMS INSERT B V ACUUM RELIEF V ALVE. INST ALL PER LOCAL CODES. 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 TWO TEMPERA TURE WITH MIXING V AL VE *PIPE TO OPEN DRAIN INST ALL IN ACCORDANCE WITH ALL LOCAL CODES[...]

  • Page 39

    39 PIPING DIAGRAMS TWO HEA TERS WITH HORIZONT AL ST ORAGE T ANK WITH OR WITHOUT BUILDING RECIRCULA TION INSERT B V ACUUM RELIEF V ALVE. INST ALL PER LOCAL CODES.[...]

  • Page 40

    40 PIPING DIAGRAMS THREE HEA TERS WITH HORIZONT AL STORAGE T ANK WITH OR WITHOUT BUILDING RECIRCULA TION THREE HEA TERS WITH VERTICAL STORAGE T ANK WITH OR WITHOUT BUILDING RECIRCULA TION INSERT B V ACUUM RELIEF V ALVE. INST ALL PER LOCAL CODES.[...]

  • Page 41

    41 PIPING DIAGRAMS FOUR HEA TERS WITH VERTICAL STORAGE T ANK WITH OR WITHOUT BUILDING RECIRCULA TION FOUR HEA TERS WITH HORIZONT AL ST ORAGE T ANK WITH OR WITHOUT BUILDING RECIRCULA TION INSERT B V ACUUM RELIEF V ALVE. INST ALL PER LOCAL CODES.[...]

  • Page 42

    42 PIPING DIAGRAMS MANIFOLD KITS ALL DIMENSIONS IN INCHES MANIFOLD KITS TWO HEA TERS T ank Capacity (gallons) Part Number H W D A 52 9003429205 66 1/4 56 3/4 27 1/4 13 1/4 80 9003429205 70 1/2 60 1/4 31 1/4 9 3/4 120 9003429205 73 1/4 64 1/2 35 3/4 5 1/2 Inlet and outlet size - 1 1/2 THREE HEA TERS T ank Capacity (gallons) Part Number H W D A 52 90[...]

  • Page 43

    43 W ARRANTY A. O. Smith Corporation, the warrantor , extends the following LIMITED WARRANTY to the owner of this water heater: 1. THE T ANK If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein, during the rst THREE years after initial instal[...]

  • Page 44

    44 500 T ennessee Waltz Parkway , Ashland City , TN 37015 T echnical Support: 800-527-1953 • Parts: 800-433-2545 • Fax: 800-644-9306 www .hotwater.com[...]