A. O. Smith DHE-1000 User Manual

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