A.O. Smith NW 37-670 - Manual (Page 4)

4
ELECTRICAL/RECOVERY DATA
MODEL AND RATING PLATE
WATER BOILER SPECIFICATIONS
Model Number
Gal. Std. KW BTU Output Gal./Hr. Number of Number of Standard Number Amperage 3 Phase
Prefix Cap. Input 100°F Rise Elements Steps and KW of Steps 208v 240V 480V 575V
NW 37 45K 153,585 180 3 1 1@45 128 108 55 45
NW 37 60K 204,720 240 4 1 1@60 171 144 73 60
NW 37 75K 255,975 300 5 1 1@75 213 180 90 75
NW 37 90K 307,170 369 6 3 3@30 250 217 108 90
NW 37 105K 358,365 430 7 4 3@30+1@15 292 253 126 105
NW 37 120K 409,560 492 8 4 4@30 334 289 144 121
NW 37 150K 511,950 615 10 5 5@30 417 361 180 151
NW 37 180K 614,340 738 12 5 4@30+1@60 500 433 216 181
NW 60 210K 716,730 861 14 5 3@30+2@60 584 505 252 211
NW 60 240K 819,120 984 16 5 2@30+3@60 668 577 288 241
NW 60 270K 921,510 1107 18 5 1@30+4@60 751 650 324 271
NW 60 300K 1,023,900 1230 20 5 5@60 834 722 360 301
NW 96 330K 1,126,290 1353 22 6 5@60+1@30 917 794 396 331
NW 96 360K 1,228,680 1476 24 6 6@60 1001 866 432 362
NW 96 390K 1,331,070 1599 26 7 6@60+1@30 1084 938 468 392
NW 96 420K 1,433,460 1722 28 7 7@60 1168 1010 504 422
NW 96 450K 1,535,850 1845 30 8 7@60+1@30 1251 1083 540 452
NW 96 480K 1,638,240 1968 32 8 8@60 1334 1155 576 487
NW 150 540K 1,843,020 2214 36 9 9@60 1501 1299 648 542
NW 150 600K 2,047,800 2460 40 10 10@60 1668 1443 720 602
NW 150 660K 2,252,580 2706 44 10 8@60+2@90 792 663
NW 150 720K 2,457,360 2952 48 8 8@90 864 723
NW 220 780K 2,662,140 3198 52 9 8@90+1@60 936 783
MW 220 840K 2,866,920 3444 56 10 9@90+1@30 1008 843
NW 220 900K 3,071,700 3690 60 10 10@90 1080 904
NW 220 960K 3,276,480 3936 64 10 8@90+2@120 1152 964
NW 220 1020K 3,481,260 4182 68 10 6@90+4@120 1224 1024
NW 220 1080K 3,636,040 4428 72 10 4@90+6@120 1296 1084
NW 220 1140k 3,890,820 4674 76 10 2@90+8@120 1368 1145
NW 334 1200K 4,095,600 4920 80 10 10@120 1440 1205
NW 334 1260K 4,300,380 5166 84 10 8@120+2@150 1512 1265
NW 334 1380K 4,709,940 5658 92 10 4@120+6@150 1656 1386
NW 334 1500K 5,119,500 6150 100 10 10@150 1800 1506
NW 334 1620K 5,529,060 6642 108 15 6@90+9@120 1944 1627
NW 334 1740K 5,938,630 7134 116 15 2@90+13@120 2068 1747
NW 400 1800K 6,143,400 7380 120 15 15@120 2160 1807
NW 400 1860K 6,348,180 7626 124 15 13@120+2@150 2232 1868
NW 400 1980K 6,757,740 8118 132 15 9@120+6@150 2376 1988
NW 400 2100K 7,167,300 8610 140 15 5@120+10@150 2520 2109
NW 500 2200K 7,576,860 9102 148 15 1@120+14@150 2664 2229
NW 500 2340K 7,986,420 9594 156 20 18@120+2@90 2808 2350
NW 500 2460K 8,395,980 10080 164 20 18@120+2@150 2952 2470
NW 500 2580K 8,805,540 10578 172 20 14@120+6@150 3096 2590
NW 670 2700K 9,315,100 11070 180 20 10@120+10@150 3240 2711
NW 670 2820K 9,624,660 11562 188 20 6@120+14@150 3384 2832
NW 670 2940K 10,034,220 12054 196 20 2@120+18@150 3528 2952
NOTE: For boilers 3000KW to 6000KW consult factory.
Not Recommended Not Recommended