Commercial Electric
Water Heaters
STANDARD FEATURES
ADVANCED ELECTRONIC CONTROL (All Models 150kW and Down)
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 exact temperatures of
hot water are needed.
Plain 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 – Sizes the input of available elements to match
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.
iCOMM™ Compatible - Units can be monitored from remote
locations. Call 1.888.WATER02 for more information.
Note: Units over 150KW use analog controls.
DVE-150 THRU 10,000
DHE-200 THRU 10,000
SOLID STATE MODULATING STEP CONTROL (All Models 180kW and up) –
Solid state electronic control device that modulates input to match load through progressive
sequencing of steps (up to 20 steps with maximum of one per contactor).
GLASSLINED TANK – Tank interior is coated with glass specially developed for use in water heaters.
Tanks rated at 125 psi working pressure; 150 psi or 160 psi working pressure is optional. Vermin proof
fiber glass insulation reduces costly heat loss. Constructed to Section IV of ASME code, and UL standards.
Tanks have channel skid base. A 4” x 6” handhole is furnished on 500, 600 and 700-gallon models;
11” x 15” manhole is furnished on 800-gallon and larger sizes.
INCOLOY IMMERSION HEATERS – Heavy-duty medium watt density elements (three/immersion heater)
have incoloy sheathing: provide excellent protection against oxidation and scaling. The input ranges
from 15KW to 3000KW (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 and
current edition of ASHRAE/IESNA 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, 480, 600 volt single or three-phase.
For other voltages consult factory.
Factory-installed terminal block(s)
Cabinet has baked enamel finish
Prewired element terminal leads
Temperature and pressure relief valve
2” dial temperature gauge
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.
LIMITED WARRANTY OUTLINE – If the tank should leak any time during the first three years, under
the terms of the warranty, A. O. Smith will repair or replace the heater; installation, labor, handling
repair or replace the heater; installation, labor, handling and local delivery extra. THIS OUTLINE IS NOT
A WARRANTY. For complete information, consult the written warranty or A. O. Smith. Warranty does
not apply to product installed outside of the United States of America or its territorial possessions
and Canada.
Revised January 2013
February 2010R
Low Lead Content
Page 1 of 4
AOSCE15500
Commercial Electric
Water Heaters
Nominal
A. O. Smith
Model
DHE-200
DHE-250
DHE-300
DHE-350
DHE-400
DHE-500
DHE-600
DHE-700
DHE-800
DHE-1000
DHE-1250
DHE-1500
DHE-2000
DHE-3000
DHE-5000
DHE-7500
DHE-10,000
DVE-140
DVE-150
DVE-150L
DVE-200
DVE-250
DVE-300
DVE-350
DVE-400
DVE-500
DVE-600
DVE-700
DVE-800
DVE-1000
DVE-1250
DVE-1500
DVE-2000
DVE-3000
DVE-5000
DVE-7500
DVE-10,000
*Complete Model Number includes the desired kW at end, e.g.: DVE-500-120 when kW = 120.
**Size may vary according to kW input.
Minimum installation clearances required. 30” from front, 12” from top, and 24” from right side.
Gallon
Capacity
200
250
300
350
400
500
600
700
800
1000
1250
1500
2000
3000
5000
7500
10,000
140
150
150
200
250
300
350
400
500
600
700
800
1000
1250
1500
2000
3000
5000
7500
10,000
Maximum
kW
Input
180
240
300
330
390
480
600
690
780
990
1200
1500
1980
3000
3000
3000
3000
150
150
150
180
240
300
330
390
480
600
690
780
990
1200
1500
1980
3000
3000
3000
3000
Height
A
38-1/2
38-1/2
44-1/2
44-1/2
44-1/2
51
51
51
57
61
61
61
70
76
82
94
106
83-1/2
83-1/2
59-1/2
79-1/2
93
83-1/2
95-1/2
102-1/2
97
112
124
116
116
143
155
183
217
309
330
358
Width
(Length) BDepth
HORIZONTAL ELECTRIC STORAGE HEATER
77
91
81
93
100
94
109
121
111
111
138
150
177
211
296
317
345
VERTICAL ELECTRIC STORAGE HEATER
30
30
36
36
36
42
42
42
48
48
48
54
60
60
60
66
72
78
90
102
CDE
36
36
42
42
42
48
48
48
54
60
60
60
66
72
78
90
102
37
37
43
43
43
49
49
49
55
55
55
61
67
67
67
73
79
85
97
109
10-1/2
10-1/2
8-1/4
8-1/4
8-1/4
14
14
14
16-1/2
16-1/2
16-1/2
16-1/2
20
20
20-1/2
21-1/2
22
16
16
17-1/2
17-1/2
17-1/2
19
19
19
21
21
21
23
24-1/2
24-1/2
24-1/2
25
27-1/2
30
30
30
17-1/2
24
17
23
26-1/2
24
32
38
32
29-1/2
43
50
60
72-1/2
113-1/2
121
132
6
6
6
6
6
6
6
6
6
6
6
8
10
10
10
12
14
14
14
14
Skid
Spacing
F
31
48
36
48
55
48
64
76
64
59
86
98
120
131
195
218
220
17
17
21
21
21
25-1/2
25-1/2
25-1/2
30
30
30
34
38
38
38
42-1/2
47
51
59-1/2
68
Inspection
Opening
G
Optional
4” x 6”
Handhole
11” x 15”
Manhole
Optional
4” x 6”
Handhole
11” x 15”
Manhole
Inlet
Outlet
Opening
1-1/2
1-1/2
2
2
2
2
2
2
2
3
3
3
3
3
3
4
4
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
2
2
2
2
2
2
2
3
3
3
3
3
3
4
4
Drain
Opening
3/4
3/4
3/4
3/4
3/4
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/2
1-1/2
2
2
2
2
2
3/4
3/4
3/4
3/4
3/4
3/4
3/4
3/4
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/2
1-1/2
2
2
2
2
2
Relief
Valve
Opening**
3/4
1
1
1
1
1
1
1
1
1
1
1
1-1/4
1-1/2
1-1/2
1-1/2
1-1/2
3/4
3/4
3/4
3/4
1
1
1
1
1
1
1
1
1
1
1
1
1-1/2
1-1/2
1-1/2
1-1/2
For Technical Information and Automated Fax Service, call 800-527-1953. A. O. Smith reserves the right to make product changes or improvements without prior notice.
Revised January 2013
February 2010R
www.hotwater.com
Page 2 of 4
AOSCE15500
Commercial Electric
Water Heaters
NUMBER OF 50A CONTACTORS AMPERAGE DRAW
STANDARD
KW RATINGS
XI ON/OFF
15 1-15kW 51,195 61 1 1 42 37 19 15
XI PROGRESSIVE
24
30
36
45
60
75
90
105
120
150
SOLID STATE STEP CONTROL
180 12-15kW 614,340 738 12 6 499 433 217 173
210
240
270
300
330
360
390
420
450
480
510
540
570
600
630
660
690
720
810
900
990
1080
1170
1260
1350
1440
1530
1620
1800
1980
2040
2220
2250
2400
2540
2820
3000
NUMBER OF
IMMERSION
HEATERS
2-12kW
2-15kW
3-12kW
3-15kW
4-15kW
5-15kW
6-15kW
7-15kW
8-15kW
10-15kW
14-15kW
16-15kW
18-15kW
20-15kW
22-15kW
24-15kW
26-15kW
28-15kW
30-15kW
32-15kW
34-15kW
36-15kW
38-15kW
40-15kW
42-15kW
44-15kW
46-15kW
48-15kW
54-15kW
60-15kW
66-15kW
72-15kW
78-15kW
84-15kW
90-15kW
96-15kW
102-15kW
108-15kW
120-15kW
132-15kW
136-15kW
148-15kW
150-15kW
160-15kW
176-15kW
188-15kW
200-15kW
BTU INPUT
& OUTPUT
81,912
102,390
122,868
153,585
204,720
255,975
307,170
358,365
409,560
511,950
716,730
819,120
921,510
1,023,900
1,126,290
1,228,680
1,331,070
1,433,460
1,535,850
1,638,240
1,740,630
1,843,020
1,945,410
2,047,800
2,150,190
2,252,580
2,345,970
2,457,360
2,764,530
3,071,700
3,378,870
3,686,040
3,993,210
4,300,380
4,607,550
4,914,720
5,221,890
5,529,060
6,141,600
6,757,740
6,962,520
7,576,860
7,679,250
8,188,800
9,010,320
9,624,660
10,236,000
GPH
RECOVER
100°F RISE
98
123
147
184
246
307
369
430
492
615
861
984
1,107
1,230
1,353
1,476
1,599
1,722
1,845
1,968
2,091
2,214
2,337
2,460
2,583
2,706
2,829
2,952
3,321
3,690
4,059
4,428
4,797
5,166
5,535
5,904
6,273
6,642
7,380
8,118
8,364
9,102
9,225
9,840
10,824
11,562
12,300
208V, 240V 480V, 600V 208V 240V 480V 600V
2
2
3
3
4
5
6
7
8
10
14
16
18
20
22
24
26
28
30
32
34
36
38
40
100
1
1
1
2
2
3
3
4
4
5
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
27
30
33
36
39
42
45
48
51
54
60
66
68
74
75
80
88
94
67
83
100
126
167
208
250
292
333
416
583
666
750
832
916
999
1,083
1,166
1,249
1,332
1,416
1,499
1,582
1,664
Not Recommended
58
72
87
109
145
181
217
253
289
361
505
577
650
722
794
866
938
1,010
1,083
1,155
1,227
1,299
1,371
1,443
Not Recommended
1,083
1,083
1,191
1,299
1,408
1,516
1,624
1,732
1,841
1,949
2,707
2,887
3,175
3,392
3,608
ESAHP-EERHTESAHP-EERHT
109
127
145
180
253
289
325
361
397
433
469
505
542
578
613
650
686
722
758
794
830
866
974
830
866
974
27
36
43
54
72
90
23
29
35
44
58
72
87
101
115
144
202
231
260
289
318
346
375
404
433
462
491
520
548
577
606
635
664
693
779
866
953
1,039
1,126
1,213
1,300
1,386
1,473
1,559
1,732
1,905
1,963
2,136
2,165
2,310
2,540
2,714
2,887
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 lugs and channel skid base. 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 rectangular sheet metal enclosure with baked enamel finish. Tank to be insulated with fiberglass insulation. Separate 2” dial type
temperature gauge will be mounted on the front of the enclosure. Enclosure to have hinged locking door over electric controls. There shall be ____________
individually replaceable _______ kW, 4 bolt flange mounted, 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. The thermostatic control of the contacts shall be in _______ stages through solid state modulating step
control which will balance the water heating input to the demand. 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 150kW standard ratings and below should incorporate the iCOMM™ system for
remote monitoring, leak detection and fault alert.
For Technical Information and Automated Fax Service, call 800-527-1953. A. O. Smith reserves the right to make product changes or improvements without prior notice.
Revised January 2013
February 2010R
www.hotwater.com
SAMPLE SPECIFICATIONS
Page 3 of 4
AOSCE15500
Commercial Electric
Water Heaters
OPTIONS
TANK LININGS
CEMENT – A special formulation of cement providing
excellent corrosion protection. Available on 200 gallon and
larger tanks.
EPOXY – A solventless two component epoxy lining applied
to a minimum ten-mil (.010”) dry thickness. Available on 200
gallon and larger tanks.
GOLDENROD
Goldenrod
with the Goldenrod
pending). Goldenrod
times the scaling resistance of standard incoloy elements.
Goldenrod
failure due to scale buildup.
SPECIAL CONSTRUCTION
SILICON BRONZE VESSELS – Are available for special
applications or very corrosive water conditions. Consult
factory for specific sizes.
STAINLESS STEEL VESSELS – Are available for deionized
water. Built with stainless steel under rules of Section IV of
the ASME Boiler and Pressure Vessel Code for operation on
deionized water having a minimum specific resistivity of 10
megohm/cm.
®
ELEMENTS – Available with Optional
®
Elements - All DVE/DHE models are available
®
Elements carry a three-year warranty against
®
24K gold plated elements (patent
®
Elements provide long-life and five
CONTROL OPTIONS
COPPER TUBE TANK HEATER – Double wall copper tube
tank heaters are designed for heating potable water with
both potable or non-potable liquids or steam, and are
specifically engineered for installation in models DVE and
DHE for dual-energy applications. Tank heaters have a
positive fail-safe means of leak detection in the event of
either tube failure to prevent mixture of heating medium
and potable water. Singlewall heat exchangers are also
available.
TERMINAL BLOCKS – Allows for remote connection to
building demand limiter or other functions.
AUTOMATIC RESET HIGH LIMIT – A control that in the
event of high temperature, interrupts power, de-energizing
elements, automatic reset. (Standard with modulating step
control).
INDICATING LIGHTS – Denotes heating stage(s) in
operation. Up to one light per contactor is available.
OVERRIDE SWITCHES – 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.
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.
3-1/2” DIAL-TYPE PRESSURE GAUGE – Factory-installed.
3-1/2” DIAL-TYPE TEMPERATURE GAUGE – Factory-
installed.
11” x 15” MANHOLE – Available as option on tanks 700
gallons or smaller.
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.
CIRCUIT BREAKER – A safety device which disconnects
power to the heater in the event of overcurrent.
For Technical Information and Automated Fax Service, call 800-527-1953. A. O. Smith reserves the right to make product changes or improvements without prior notice.
Revised January 2013
February 2010R
www.hotwater.com
Page 4 of 4
AOSCE15500
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