A.O. Smith NW 37-670 Instruction Manual page 4

ELECTRICAL/RECOVERY DATA
Model Number
Gal. Std. KW
Prefix Cap. Input
NW 37 45K
NW 37 60K
NW 37 75K
NW 37 90K
NW 37 105K
NW 37 120K
NW 37 150K
NW 37 180K
NW 60 210K
NW 60 240K
NW 60 270K
NW 60 300K
NW 96 330K
NW 96 360K
NW 96 390K
NW 96 420K
NW 96 450K
NW 96 480K
NW 150 540K
NW 150 600K
NW 150 660K
NW 150 720K
NW 220 780K
MW 220 840K
NW 220 900K
NW 220 960K
NW 220 1020K
NW 220 1080K
NW 220 1140k
NW 334 1200K
NW 334 1260K
NW 334 1380K
NW 334 1500K
NW 334 1620K
NW 334 1740K
NW 400 1800K
NW 400 1860K
NW 400 1980K
NW 400 2100K
NW 500 2200K
NW 500 2340K
NW 500 2460K
NW 500 2580K
NW 670 2700K
NW 670 2820K
NW 670 2940K
NOTE: For boilers 3000KW to 6000KW consult factory.
MODEL AND RATING PLATE
WATER BOILER SPECIFICATIONS
BTU Output Gal./Hr.
100°F Rise
153,585 180
204,720 240
255,975 300
307,170 369
358,365 430
409,560 492
511,950 615
614,340 738
716,730 861
819,120 984
921,510 1107
1,023,900 1230
1,126,290 1353
1,228,680 1476
1,331,070 1599
1,433,460 1722
1,535,850 1845
1,638,240 1968
1,843,020 2214
2,047,800 2460
2,252,580 2706
2,457,360 2952
2,662,140 3198
2,866,920 3444
3,071,700 3690
3,276,480 3936
3,481,260 4182
3,636,040 4428
3,890,820 4674
4,095,600 4920
4,300,380 5166
4,709,940 5658
5,119,500 6150
5,529,060 6642
5,938,630 7134
6,143,400 7380
6,348,180 7626
6,757,740 8118
7,167,300 8610
7,576,860 9102
7,986,420 9594
8,395,980 10080
8,805,540 10578
9,315,100 11070
9,624,660 11562
10,034,220 12054
Number of Number of Standard Number
Elements Steps and KW of Steps
3 1
4 1
5 1
6 3
7 4
8 4
10 5
12 5
14 5
16 5
18 5
20 5
22 6
24 6
26 7
28 7
30 8
32 8
36 9
40 10
44 10
48 8
52 9
56 10
60 10
64 10
68 10
72 10
76 10
80 10
84 10 8@120+2@150
92 10 4@120+6@150
100 10
108 15
116 15 2@90+13@120
120 15
124 15 13@120+2@150
132 15 9@120+6@150
140 15 5@120+10@150
148 15 1@120+14@150
156 20 18@120+2@90
164 20 18@120+2@150
172 20 14@120+6@150
180 20 10@120+10@150
188 20 6@120+14@150
196 20 2@120+18@150
4
Amperage 3 Phase
208v 240V
1@45 128 108
1@60 171 144
1@75 213 180
3@30 250 217
3@30+1@15 292 253
4@30 334 289
5@30 417 361
4@30+1@60 500 433
3@30+2@60 584 505
2@30+3@60 668 577
1@30+4@60 751 650
5@60 834 722
5@60+1@30 917 794
6@60 1001 866
6@60+1@30 1084 938
7@60 1168 1010
7@60+1@30 1251 1083
8@60 1334 1155
9@60 1501 1299
10@60 1668 1443
8@60+2@90
8@90
8@90+1@60
9@90+1@30
10@90
8@90+2@120
6@90+4@120
4@90+6@120
2@90+8@120
10@120
10@150
6@90+9@120
15@120
480V 575V
55 45
73 60
90 75
108 90
126 105
144 121
180 151
216 181
252 211
288 241
324 271
360 301
396 331
432 362
468 392
504 422
540 452
576 487
648 542
720 602
792 663
864 723
936 783
1008 843
1080 904
1152 964
1224 1024
1296 1084
1368 1145
1440 1205
1512 1265
1656 1386
1800 1506
1944 1627
2068 1747
2160 1807
2232 1868
2376 1988
2520 2109
2664 2229
2808 2350
2952 2470
3096 2590
3240 2711
3384 2832
3528 2952