A.O. Smith NW 37-670 Instruction Manual page 7

Model Number
Std. KW
Prefix Gal. 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
NW 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 2220K
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.
*Consult factory for optional number of steps and Kw per step.
dIMensIon data (cont'd)
BoIler specIfIcatIons (standard)
Gal./Hr. Number
BTU
100°F of
Output
Rise Elements
153,585 180 3
204,720 240 4
255,975 300 5
307,170 369 6
358,365 430 7
409,560 492 8
511,950 615 10
614,340 738 12
716,730 861 14
819,120 984 16
921,510 1107 18
1,023,900 1230 20
1,126,290 1353 22
1,228,680 1476 24
1,331,070 1599 26
1,433,460 1722 28
1,535,850 1845 30
1,638,240 1968 32
1,843,020 2214 36
2,047,800 2460 40
2,252,580 2706 44
2,457,360 2952 48
2,662,140 3198 52
2,866,920 3444 56
3,071,700 3690 60
3,276,480 3936 64
3,481,260 4182 68
3,636,040 4428 72
3,890,820 4674 76
4,095,600 4920 80
4,300,380 5166 84
4,709,940 5658 92
5,119,500 6150 100
5,529,060 6642 108
5,938,630 7134 116
6,143,400 7380 120
6,348,180 7626 124
6,757,740 8118 132
7,167,300 8610 140
7,576,860 9102 148
7,986,420 9594 156
8,395,980 10080 164
8,805,540 10578 172
9,315,100 11070 180
9,624,660 11562 188
10,034,220 12054 196
Number Standard Number and
of Steps KW of Steps
* *
1 1@45
1 1@60
1 1@75
3 3@30
4 3@30+1@15
4 4@30
5 5@30
6 6@30
7 7@30
8 8@30
9 9@30
10 10@30
10 1@60+9@30
10 2@60+8@30
10 3@60+7@30
10 4@60+6@30
10 5@60+5@30
10 6@60+4@30
10 8@60+2@30
10 10@60
10 8@60+2@90
10 4@90+6@60
10 6@90+4@60
10 9@90+1@30
10 10@90
10 8@90+2@120
10 6@90+4@120
10 4@90+6@120
10 2@90+8@120
10 10@120
10 8@120+2@150
10 4@120+6@150
10 10@150
16 10@90+6@120
17 10@90+7@120
17 8@90+9@120
17 6@90+11@120
18 6@90+12@120
19 6@90+13@120
15 1@120+14@150
20 18@120+2@90
20 18@120+2@150
20 14@120+6@150
20 10@120+10@150
20 6@120+14@150
20 2@120+18@150
7
Amperage 3 Phase
208V 240V 480V 575V
128 108 55 45
171 144 73 60
213 180 90 75
250 217 108 90
292 253 126 105
334 289 144 121
417 361 180 151
500 433 216 181
584 505 252 211
668 577 288 241
751 650 324 271
834 722 360 301
917 794 396 331
1001 866 432 362
1084 938 468 392
1168 1010 504 422
1251 1083 540 452
1334 1155 576 487
648 542
1501 1299 720 602
1668 1443 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