Printed in U.S.A.
A. O. Smith Corporation reserves the right to make product changes
or improvements at any time without notice.
A. O. Smith Enterprises Ltd.
A Division of A. O. Smith Corporation
Stratford, Ontario
A 212.0C
© A. O. Smith Corp., 2001
A.O. Smith Water Products Co., Inc. On Line
www.hotwater.com
For Technical Information
Phone: 800-265-8520
McBee, South Carolina
El Paso, Texas
Seattle, Washington
Veldhoven, The Netherlands
SUGGESTED SPECIFICATIONS
The heater(s) shall be Dura-Power Commercial Electric Model Number _______________ as manufactured by A.O. Smith Water Products Company
or equivalent. Heater(s) shall be rated at ______________ KW ________ V _____________ phase, 60 cycle AC listed by Canadian Standards
Association. Tank(s) shall be ________ gallon (Liter) capacity. Heater(s) shall have 150 psi (1034 kPa) working pressure and be equipped with
extruded high density anode. All internal surfaces of the heater(s) exposed to water shall be glass-lined with an alkaline borosilicate composition
that has been fused to steel by firing at a temperature range of 1400°F to 1600°F (760° to 870°C). Electric heating elements shall be low watt density
with incoloy sheath and 1" screw-in type. Each element shall be controlled by an individually mounted thermostat and high temperature cut-off
switch. All internal circuits shall be fused (optional). The outer jacket shall be of baked enamel finish and shall be provided with full size control
compartment for performance of service and maintenance through hinged front panel and shall enclose the tank with vermin proof foam insulation.
Electrical junction box with heavy duty terminal block shall be provided. The drain valve shall be located in the front for ease of servicing. Heater
tank shall have a three year limited warranty as outlined in the written warranty. Manufacturer shall supply ASME rated temperature and pressure
relief valve. Fully illustrated instruction manual to be included.
RECOVERY CAPACITY IN GALLONS AT TEMPERATURE RISE OF
Standard
BTU/
30°F
40°F
50°F
60°F
70°F
80°F 90°F 100°F 110°F 120°F 130°F 140°F
kW Input
Hour
17°C
22°C
28°C
33°C
39°C
45°C 50°C
56°C
61°C
67°C
72°C
78°C
6
20,478
82
62
49
41
35
31
27
25
22
21
19
18
310
233
166
155
133
116
103
93
85
78
72
66
9
30,717
123
92
74
62
53
46
41
37
34
31
28
26
465
349
279
233
199
174
155
140
127
116
107
100
12
40,956
164
123
98
82
70
61
55
49
45
41
38
35
620
465
372
310
266
233
207
186
169
155
143
133
13.5
46,075
184
138
111
92
79
69
62
55
50
46
43
40
698
523
419
349
299
262
233
209
190
174
161
150
15
51,195
205
154
123
102
88
77
68
61
56
51
47
44
775
582
465
388
332
291
258
233
211
194
149
166
18
61,434
246
184
148
123
105
92
82
74
67
62
57
53
930
698
558
465
399
349
310
279
254
233
215
199
24
81,912
328
246
197
164
140
123
109
98
90
82
76
70
1241
930
744
620
532
465
414
372
338
310
286
266
27
92,151
369
276
221
185
158
138
123
111
101
92
85
79
1396
1047
938
609
509
523
465
410
391
340
322
299
30
102,390
410
307
246
205
176
154
137
123
112
102
95
88
1551
1163
930
775
665
582
517
465
423
388
358
332
36
122,868
492
369
295
246
211
184
164
148
134
123
113
105
1861
1396
1117
930
798
698
620
556
508
465
429
399
40.5
138,226
554
418
332
277
237
208
185
166
151
138
128
119
2094
1570
1256
1047
897
785
698
628
634
582
537
498
45
153,585
615
461
369
307
263
230
205
184
168
154
142
132
2326
1745
1398
1163
997
872
755
698
634
582
537
498
54
184,302
738
554
443
359
316
277
246
221
201
185
170
158
2791
2094
1675
1396
1196
1047
930
837
761
696
644
598
Figured at 1 KW (3413 BTU) = 4.1 Gallons at 100°F temperature rise.
NSF ratings may be obtained by multiplying the above figures by 0.98.
Tank
Dimensions
Inlet/
Approx. Ship.
Model
Capacity
A
B
C
Outlet (NPT)
Wt. (Lbs.)
Number
gal.
litre
in.
cm
in.
cm
in.
cm
in.
cm
lb
kg
DRE-52
50
189
55 1/4
140.3
21 3/4
55.2
27 1/4
69.2
1 1/4
3.2
265
120
DRE-80
80
300
59 1/2
151.1
25 1/4
64.1
31 1/4
79.4
1 1/4
3.2
280
127
DRE-120
119
450
62 1/4
158.1
29 1/2
75.0
35 3/4
90.8
1 1/4
3.2
390
177
Model Numbers
Number
Full Load Current In Amperes
KW
Tank Capacity in Gallons
Of
Element
Single Phase
Three Phase
Input
50
80
119
Elements
Wattage
208V
240V
277V
480V
208V
240V
480V
6
DRE-52-6
DRE-80-6
DRE-120-6
3
2,000
28.8
25.0
21.7
12.5
16.7
14.4
7.2
9
DRE-52-9
DRE-80-9
DRE-120-9
3
3,000
43.3
37.5
32.5
18.8
25.0
21.7
10.8
12
DRE-52-12
DRE-80-12
DRE-120-12
3
4,000
57.7
50.0
43.3
25.0
33.3
28.9
14.4
13.5
DRE-52-13.5
DRE-80-13.5
DRE-120-13.5
3
4,500
64.9
56.3
48.7
28.1
37.5
32.5
16.2
15
DRE-52-15
DRE-80-15
DRE-120-15
3
5,000
72.1
62.5
54.2
31.3
41.6
36.1
18.0
18
DRE-52-18
DRE-80-18
DRE-120-18
3*
6,000
86.5
75.0
65.0
37.5
50.0
43.3
21.7
24
DRE-52-24
DRE-80-24
DRE-120-24
6
4,000
115.4
100.0
86.6
50.0
66.6
57.7
28.9
27
DRE-52-27
DRE-80-27
DRE-120-27
6
4,500
129.8
112.5
97.5
56.3
74.9
65.0
32.5
30
DRE-52-30
DRE-80-30
DRE-120-30
6
5,000
144.2
125.0
108.3
62.5
83.3
72.2
36.1
36
DRE-52-36
DRE-80-36
DRE-120-36
6*
6,000
173.1
150.0
130.0
75.0
99.9
86.6
43.3
40.5
DRE-52-40.5
DRE-80-40.5
DRE-120-40.5
9
4,500
194.7
168.8
146.2
84.4
112.4
97.4
48.7
45
DRE-52-45
DRE-80-45
DRE-120-45
9
5,000
216.3
187.5
162.5
93.8
124.9
108.3
54.1
54
DRE-52-54
DRE-80-54
DRE-120-54
9
6,000
N/A
225.0
194.9
112.5
149.9
129.9
65.0
*208 volt models may contain three (3) additional elements.
