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DURA-POWER™ XI
COMMERCIAL ELECTRIC
COMMERCIAL
ELECTRIC WATER HEATERS
ADVANCED ELECTRONIC CONTROL
A. O. Smith’s new propriety electronic water
heater control, provides precise + or - 1ºF
temperature control, that is ideal for industrial
and food service applications where accurate
hot water temperatures are needed.
EASY-TO-READ TEXT
• Animated icons display detailed operational
and diagnostic information. Fault or alert
messages appear if an operational issue
occurs.
LOW WATER CUT OFF
• Factory standard on board low water cut-off
uses a remote electronic immersion type
probe to prevent energizing of the elements
in the event of low water condition and
eliminates accidental dry firing.
PROGRESSIVE MODULATING
• Matches number of elements to current
load conditions. Rotates and lead lags
element loads to provide long life and equal
wear.
ECONOMY MODE OPERATION
• Control system automatically lowers the
operating set point by a programmed value
during user defined time periods. Seven-day
clock may be programmed for night set
back and or weekend shutdown to reduce
operating cost and save money.
BMS COMPATIBLE
• Modbus/BACnet compatible with optional
Gateway interface. Call 888 WATER02 for
more information.
PERMAGLAS® GLASS LINING IS
STANDARD
• Exclusive process provides superior
protection against corrosion in varying
water conditions. Cement and Epoxy linings
are optional.
ASME CODE CONSTRUCTION
• All models are constructed to the
requirements of ASME and are available in
125, 150 and 160 psi working pressures
(125 psi working pressure - standard).
Consult factory for ASME code tanks with
greater or lesser working pressures and
special configurations or materials.
INCOLOY IMMERSION HEATERS
• Heavy-duty elements have incoloy
sheathing: provide excellent protection
against oxidation and scaling. The input
ranges from 15kW to 900kW (see
accompanying chart).
FUSING
• Control and power circuit fusing to meet
N.E.C.
COMPLIANCE
• Meets the standby loss requirements of
the U.S. Department of Energy, NRCan and
current edition of ASHRAE/IES 90.1.
MAGNETIC CONTACTOR(S)
• Heavy duty UL rated for 100,000 cycles.
OTHER STANDARD FEATURES
• Color-coded circuitry for easier servicing
• Anode rods for maximum corrosion
protection
• Standard voltages include 208, 240, 380,
400, 415, 480, 600 volt single or threephase
• International voltages available (consult
factory)
• Factory-installed terminal block(s)
• Temperature and pressure relief valve,
supplied but not installed
OPTIONAL DUAL-ENERGY SOURCE
CAPABILITY
• Provides emergency back up energy source
or winter/summer boiler operation. Can
be specified with optional water to water
or steam to water heat exchangers. Both
single and double-wall heat exchangers are
available. Complete control packages can
be factory-installed for hook-up and run
capability.
THREE YEAR LIMITED WARRANTY
• For complete warranty information consult
written warranty or go to hotwater.com
Attention: Significant changes have been made to some
models. Please note that this spec sheet refers specifically
to models manufactured in Lebanon, TN
DVE-150 THRU 2500
DHE-150 THRU 2500
© October 2018 A. O. Smith Corporation. All rights reserved.
www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015
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AOSCE15500
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COMMERCIAL
ELECTRONIC
CONTROL
LOCATION OF
ADDITIONAL
BOX FOR DUAL
BOX MODELS
ELECTRONIC
CONTROL
ADDITIONAL
HEIGHT IF
REQUIRED
(2" Channel on 150 gallon and higher. Optional on smaller sizes.)
LOCATION OF
ADDITIONAL
CONTROL BOX
IF NEEDED
ELECTRIC WATER HEATERS
Vertical Round Models 150-1000
*An oversized control panel may be required on models with inputs above 72 kW. Consult the
factory for specific details.
Vertical Square Models 1250-2500
TOP VIEWTOP VIEW
Horizontal Models
ADDITIONAL
HEIGHT IF
REQUIRED
ELECTRONIC
CONTROL
*An oversized control panel may be required on models with inputs above 72 kW. An oversized
control panel may increase the width and depth of the square jacket by up to 2”.
ADDITIONAL
HEIGHT IF
REQUIRED
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COMMERCIAL
ELECTRIC WATER HEATERS
Model Number* Max. KW
Vertical Round Electric Storage Heater
DVE-150A 162 150 65-1/2” 32” 38-3/4” 11-3/4” 1-1/2” 1-1/2” 650
DVE-200A 162 200 78” 32” 38-3/4” 11-3/4” 1-1/2” 1-1/2” 750
DVE-250A 198 250 92” 34” 40-3/4” 19-1/4” 1-1/2” 1-1/2” 1,165
DVE-300A 180 300 80” 40” 46-3/4” 20-3/4” 2” 2” 1,350
DVE-400A 162 400 80” 46” 52-3/4” 22-1/4” 2” 2” 1,590
DVE-500A 162 500 92” 46” 52-3/4” 22-1/4” 2” 2” 1,700
DVE-600A 216 600 92” 52” 60-3/4” 24-1/4” 2-1/2” 2-1/2” 2,010
DVE-800A 216 750 104” 52” 60-3/4” 24-1/4” 2-1/2” 2-1/2” 2,450
DVE-1000A 216 950 128” 52” 60-3/4” 24-1/4” 2-1/2” 2-1/2” 3,160
Vertical Square Electric Storage Heater
DVE-150A 162 150 65-1/2” 32 38-3/4” 7-3/4” 1.5 1.5 650
DVE-200A 198 200 78 32 38-3/4” 7-3/4” 1.5 1.5 750
DVE-250A 234 250 92 34 40-3/4” 19-1/2” 1.5 1.5 1165
DVE-300A 288 300 80 40 46-3/4” 21 2 2 1350
DVE-400A 324 400 80 46 52-3/4” 22-1/2” 2 2 1590
DVE-500A 432 500 92 46 52-3/4” 22-1/2” 2 2 1700
DVE-600A 414 600 92 46 60-3/4” 24-1/2” 2.5 2.5 2010
DVE-800A 468 800 104 52 60-3/4” 24-1/2” 2.5 2.5 2450
DVE-1000A 648 1,000 128 52 60-3/4” 24-1/2” 2.5 2.5 3160
DVE-1250A 648 1,250 132-1/2” 52 64-1/2” 23-1/4” 3 3 3,560
DVE-1500A 918 1,500 128-1/2” 70-1/2” 70-1/2” 25-1/4” 3” 3” 4,120
DVE-2000A 918 2,000 124-1/2” 78-1/2” 78-1/2” 27” 3” 3” 4,350
DVE-2500A 918 2,500 146-1/2” 82-1/2” 82-1/2” 29” 3” 3” 5,750
Horizontal Square Electric Storage Heater
DHE-150A 162 150 37” 68-1/2” 34-1/4” 12” 2” 2” 1,180
DHE-200A 198 200 37” 78” 34-1/4” 12” 2” 2” 1,370
DHE-250A 234 250 39” 90-1/4” 36-1/4” 13” 2” 2” 1,450
DHE-300A 288 300 45” 78-1/4” 42-1/4” 14-3/4” 2” 2” 1,530
DHE-400A 324 400 52” 78-1/4” 48-1/4” 16” 2” 2” 1,750
DHE-500A 432 500 52” 90-3/4” 48-1/4” 16” 2” 2” 1,860
DHE-600A 414 600 58” 90-3/4” 54-1/4” 13-1/2” 2-1/2” 2” 2,340
DHE-800A 468 750 58” 102-1/4” 54-1/4” 13-1/2” 2-1/2” 2” 2,850
DHE-1000A 648 950 58” 126-1/4” 54-1/4” 13-1/2” 2-1/2” 2” 3,040
DHE-1250A 648 1,250 64” 130-1/4” 60-1/4” 15” 3” 3” 3,750
DHE-1500A 918 1,500 70” 126-1/4” 66-1/4” 16” 3” 3” 4,340
DHE-2000A 918 2,000 82” 123-1/4” 78-1/4” 14” 3” 3” 4,580
DHE-2500A 918 2,500 82” 144-1/4” 78-1/4” 16-1/2” 3” 3” 6,060
Gallon
Capacity
Dimensions in Inches Water Connection
A B C D Inlet Openings Outlet Openings
Shipping
Weight (lbs)
kW Input
15 62 51,180 1 1 15 2/1 72 63 42 36 18
18 74 61,416 1 1 18 2/1 87 75 50 44 22
30 123 102,360 2 1 15 2/1 144 125 83 72 36
36 148 122,832 2 1 18 4/2 4/2 174 150 100 87 44
45 185 153,540 3 1 15 3/2 3/2 216 188 125 108 54
54 221 184,248 3 1 18 6/2 3/2 260 225 150 130 65
60 246 204,720 4 2 15 12/6 4/3 289 250 167 144 72
72 295 245,664 4 2 18 8/4 4/4
90 369 307,080 5 2 18 6/3 3/3 250 217 109
108 443 368,496 6 2 18 12/4 4/4 300 260 130
120 492 409,440 8 3 15 8/4 4/4 333 289 144
135 554 460,620 9 3 15 9/6 4/4 375 325 162
144 590 491,328 8 3 18 16/8 4/4 400 347 174
162 664 552,744 9 3 18 18/6 8/6 450 389 195
180 738 614,160 10 4 18 20/10 8/8 500 434 217
216 886 736,992 12 4 18 24/8 8/8 600 519 260
234 959 798,408 13 5 18 26/13 8/8 650 563 282
252 1,033 859,824 14 5 18 28/14 8/8 700 607 304
270 1,107 921,240 15 5 18 30/10 12/10 750 649 325
288 1,181 982,656 16 6 18 32/16 12/12 800 692 347
306 1,255 1,044,072 17 6 18 34/17 12/12 850 736 368
324 1,328 1,105,488 18 6 18 36/12 12/12 900 780 390
342 1,402 1,166,904 19 7 18 38/19 12/12 950 822 412
360 1,476 1,228,320 20 7 18 40/20 12/12 1,000 865 435
378 1,550 1,289,736 21 7 18 42/14 14/14 1,050 909 455
396 1,624 1,351,152 22 8 18 44/22 15/16 1,100 952 477
414 1,697 1,412,568 23 8 18 46/23 16/16 1,150 995 498
432 1,771 1,473,984 24 8 18 48/16 16/16 1,200 1,040 520
For higher inputs consult the factory.
GPH
100°F
Rise
Btu/hr
Equivalent
Max.
No. of
Elements
No. of
Control
Steps
kW Per
Element
No. of
Contractors
240/480V
Suggested
Modulating
Control Steps
240/480V
Single Phase Three Phase
208V 240V 208V 240V 480V
Not
Recommended
Amperage Draw
200 174 87
Not
Recommended
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COMMERCIAL
ELECTRIC WATER HEATERS
TANK LININGS OPTIONS
CEMENT
• A special formulation of cement providing excellent corrosion protection.
Available on 250 gallon and larger tanks.
EPOXY
• A solventless two component epoxy lining available on 250 gallon and
larger tanks.
SPECIAL CONSTRUCTION OPTIONS
“12 X 16” MANHOLE – AVAILABLE ON 250 GALLON AND
ABOVE
150 OR 160 PSI WORKING PRESSURE
• Must be specified at time of order.
OTHER OPTIONAL FEATURES
TEMPERATURE AND PRESSURE RELIEF VALVES
• For working pressures other than standard; consult factory.
HORIZONTAL OR VERTICAL
• See specifications, most gallon capacities may be obtained in vertical or
horizontal construction.
CIRCULATING PUMP PACKAGE
• Circulating pump and piping sized to turn over entire storage capacity
of tank once each hour. Recommended to optimize available water at
temperature in horizontal tanks particularly where low draw conditions
are anticipated.
OPTIONAL INTERNATIONAL VOLTAGES
• 380 and 415 volts three-phase.
FACTORY-INSTALLED DIAL-TYPE PRESSURE GAUGE
CONTROL OPTIONS
HOT WATER GENERATING TUBE HEAT EXCHANGERS
• Custom dual energy source units with heating units and control trim and can be
built to design specifications on a special order basis for steam or boiler water
applications. Consult factory or Hot Water Generator specification sheets for
tube bundle sizing information and control options.
• Allows for remote connection to building demand limiter or other functions.
PILOT LIGHTS AND SWITCHES
• Denotes heating stage(s) in operation. Up to one light per contactor is available.
• A simple means of load control allows all or part of unit input to be controlled
manually. Up to one switch per contactor is available.
SAFETY DOOR INTERLOCK
• Prevents opening of control panel door when heater power supply is on. NOTE:
Once door is opened heater may be energized if necessary for service diagnosis.
SHUNT TRIP CIRCUIT BREAKER
• A safety device (circuit breaker) which disconnects power to heater in the event
of over-current, high temperature or low water level, breaker must be manually
reset Field Installed.
FACTORY-INSTALLED DIAL-TYPE TEMPERATURE GAUGE
SAMPLE SPECIFICATIONS
The heater(s) shall be A. O. Smith Commercial Electric Model Number ___________________ or an approved equal. Heater(s) shall be rated at _______ kW, _______
V, _______ phase, 60 cycle AC. The heater shall be for (vertical/horizontal) installation with lifting lug access and channel skid base not on every tank. Vessel shall be constructed
to Section IV of the ASME Code for 125 psi working pressure. Vessel shall be glass-lined with anodic protection. Entire vessel and electrical controls are to be encased in a sheet
metal enclosure with baked enamel finish. Tank to be insulated with fiberglass insulation. Enclosure to have hinged locking door over electric controls. There shall be ____________
individually replaceable heavy duty Incoloy sheathed heating elements each complete with prewired terminal leads. These elements will be switched by magnetic contactors which
are operated by a 120V fused control circuit protected by manual reset high limit. Control circuit is activated by a master pilot switch and electronic low water cutoff. This control shall
prevent the entire electrical load from being switched on instantaneously. The control shall have even load progressive sequencing which utilizes the “first on, first off” principle thereby
equalizing the operating time of heating elements and contactors. Each magnetic contactor and heating element circuit will be protected by a maximum of 60 amp cartridge type fuses
with a minimum of 100,000 amp interrupting capacity. The entire water heating package shall be prewired to solderless terminal lugs, factory tested, complete with a CSA Certified and
ASME Rated T&P relief valve and bear the Underwriters’ Laboratories label. Heater(s) shall have a 3-year limited warranty as outlined in the written warranty. Fully illustrated instruction
manual included. Water heater units(s) shall be compatible with building management systems using Modbus or BACnet with factory supplied gateway.
For technical information call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
© October 2018 A. O. Smith Corporation. All rights reserved.
www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015
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AOSCE15500
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