A.O. Smith NW 37-670 User Manual

DURA-POWER MODELS NW 37- 670

COMMERCIAL ELECTRIC WATER BOILERS

• Installation • Operation • Service • Maintenance • Limited Warranty

CAUTION

STANDARD

TEXT PRINTED OR OUTLINED IN RED CONTINS INFORMA TION RELATIVE TO YOUR SAFETY. PLEASE READ THOROUGHLY BEFORE INSTALLING AND USING THE APPLIANCE.

FLOOD WARNING

IF THE BOILER SHOULD BECOME IMMERSED IN WATER AT ANY TIME, THE BOILER SHOULD BE EXAMINED BY A COMPETENT SERVICE PERSON BEFORE IT IS RETURNED TO SERVICE.

PLACE THESE INSTRUCTIONS ADJACENT TO THE BOILER AND NOTIFY OWNER TO KEEP FOR

PRINTED IN U.S.A. 0004G 0900 P ART NO. 60047-002 REV.2

FUTURE REFERENCE.BE SURE THA T THE WARRANTY INFORMATION

HAS BEEN FILLED IN ON COMPLETION OF INSTALLATION.

A DIVISION OF A.O. SMITH CORPORATION

RENTON, WASHINGTON

www.hotwater.com

DIMENSIONAL DAT A

SIZES AND DATA 45KW THRU 720KW

Model Number Inlet* & Boiler

Prefix Gal.Cap. Std.KWInput D E F G** H J K S T U Outlet* Drain

NW 37 45K 32 30 12 42 12 1/2 - - 20 4 42 3 1 NW 37 60K 32 30 12 42 12 1/2 - - 20 4 42 3 1 NW 37 75K 32 30 12 42 12 1/2 - - 20 4 42 2 1 NW 37 90K 32 30 12 42 12 1/2 - - 20 4 42 3 1 NW 37 105K 32 30 12 42 12 1/2 - - 20 4 42 3 1 NW 37 120K 32 30 12 42 12 1/2 - - 20 4 42 3 1 NW 37 150K 32 30 12 42 12 1/2 - - 20 4 42 3 1 NW 37 180K 32 30 12 42 12 1/2 - - 20 4 42 3 1 NW 60 210K 32 30 12 57 12 1/2 - - 20 4 57 3 1 NW 60 240K 32 30 12 57 12 1/2 - - 20 4 57 3 1 NW 60 270K 32 30 12 57 12 1/2 - - 20 4 57 3 1 NW 60 300K 32 30 12 57 12 1/2 - - 20 4 57 3 1 NW 96 330K 40 38 16 691/2 17 1 1/2 17 24 5 78 4 1 1/4 NW 96 390K 40 38 16 69 1/2 17 1 1/2 17 24 5 78 4 1 1/4 NW 96 420K 40 38 16 69 1/2 17 1 1/2 17 24 5 78 4 1 1/4 NW 96 450K 40 38 16 69 1/2 17 1 1/2 17 24 5 78 4 1 1/4 NW 96 480K 40 38 16 69 1/2 17 1 1/2 17 24 5 78 4 1 1/4 NW 150 540K 54 44 19 69 1/2 20 2 20 27 5 1/2 69 1/2 5 1 1/2 NW 150 600K 54 44 19 69 1/2 20 2 20 27 5 1/2 69 1/2 5 1 1/2 NW 150 660K 54 44 19 69 1/2 20 2 20 27 5 1/2 69 1/2 5 1 1/2

NW 150 720K 54 44 19 69 1/2 20 2 20 27 5 1/2 691/2 5 1 1/2

* All fittings under 4” will be threaded type. All fittings 4” and larger will be flanged. 3” fittings extend 4” beyond jacket. ** Where overall height is a problem a larger diameter vessel with a reduced height may be furnished.  Lifting lugs and channel skid base on 96 gallon and larger units.

SIZES AND DATA 780KW THRU 3300KW

Model Number Inlet* & Boiler

Prefix Gal.Cap. Std.KWInput D E F G** H J K S T Outlet* Drain

NW 220 780K 60 50 25 71 21 2 25 1/2 30 5 1/2 5 1 1/2 NW 220 840K 60 50 25 71 21 2 25 1/2 30 5 1/2 5 1 1/2 NW 220 900K 60 50 25 71 21 2 25 1/2 30 5 1/2 5 1 1/2 NW 220 960K 60 50 25 71 21 2 25 1/2 30 5 1/2 5 1 1/2 NW 220 1020K 60 50 25 71 21 2 25 1/2 30 5 1/2 5 1 1/2 NW 220 1080K 60 50 25 71 21 2 25 1/2 30 5 1/2 5 1 1/2 NW 220 1140K 60 50 25 71 21 2 25 1/2 30 5 1/2 5 1 1/2 NW 334 1200K 60 50 25 99 25 2 25 1/2 30 7 1/4 6 2 NW 334 1260K 60 50 25 99 25 2 25 1/2 30 7 1/4 6 2 NW 334 1380K 60 50 25 99 25 2 25 1/2 30 7 1/4 6 2 NW 334 1500K 60 50 25 99 25 2 25 1/2 30 7 1/4 6 2 NW 334 1620K 60 50 25 99 25 2 25 1/2 30 7 1/4 6 2 NW 334 1740K 60 50 25 99 25 2 25 1/2 30 7 1/4 6 2 NW 400 1800K 66 56 28 90 1/2 25 1/2 2 1/2 30 33 7 3/4 8 2 NW 400 1860K 66 56 28 90 1/2 25 1/2 2 1/2 30 33 7 3/4 8 2 NW 400 1980K 66 56 28 90 1/2 25 1/2 2 1/2 30 33 7 3/4 8 2 NW 400 2100K 66 56 28 90 1/2 25 1/2 2 1/2 30 33 7 3/4 8 2 NW 500 2200K 72 62 31 90 1/2 26 1/2 2 1/2 34 36 7 3/4 8 2 NW 500 2340K 72 62 31 90 1/2 26 1/2 2 1/2 34 36 7 3/4 8 2

NW 500 2460K 72 62 31 90 1/2 26 1/2 2 1/2 34 36 7 3/4 8 2 NW 500 2580K 72 62 31 90 1/2 26 1/2 2 1/2 34 36 7 3/4 8 2

NW 670 2700K 78 68 34 96 1/2 30 1/2 2 1/2 38 39 7 3/4 8 2 NW 670 2820K 78 68 34 96 1/2 30 1/2 2 1/2 38 39 7 3/4 8 2 NW 670 2940K 78 68 34 96 1/2 30 1/2 2 1/2 38 39 7 3/4 8 2 NW 670 3060K 78 68 34 96 1/2 30 1/2 2 1/2 38 39 7 3/4 8 2 NW 670 3180K 78 68 34 96 1/2 30 1/2 2 1/2 38 39 7 3/4 8 2

NW 670 3300K 78 68 34 96 1/2 30 1/2 2 1/2 38 39 7 3/4 8 2 NOTE: For boilers 3400KW to 6000KW, consult factory. * All fittings under 4” will be threaded type. All fittings 4” and larger will be flanged. ** Where overall height is a problem a larger diameter vessel with a reduced height may be furnished.

ELECTRICAL/RECOVERY DATA

Model Number

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

Gal. Std. KW BTU Output Gal./Hr. Number of Number of Standard Number Amperage 3 Phase

Not Recommended

WATER BOILER SPECIFICATIONS

NOTE: For boilers 3000KW to 6000KW consult factory.

MODEL AND RA TING PLATE

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