A.O. Smith BTI 120 - Manual (Page 2)

2
ROUGH-IN-DIMENSIONS
Model BTI-120 BTI-154 BTI-180 BTI-199 BTI-200 BTI-250 BTI-275 BTI-310 BTI-366 BTI-400
Dim. Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm
A 63 1800 70 1778 70 1778 70 1778 72 1829 72 1829 72 1829 73 1854 73 1854 73 1854
B 4 1/4 108 4 1/4 108 4 1/4 108 4 1/4 108 4 1/2 114 4 1/2 114 4 1/2 114 4 1/2 114 4 1/2 114 4 1/2 114
C 59 1/2 1511 66 1/2 1689 66 1/2 1689 66 1/2 1889 70 1778 70 1778 70 1778 72 1829 72 1829 72 1829
D 50 7/8 1292 57 7/8 1470 57 7/8 1470 57 7/8 1470 61 5/8 1565 61 5/8 1565 61 5/8 1565 62 1/2 1588 62 1/2 1588 62 1/2 1588
E 19 11/16 500 19 11/16 500 19 11/16 500 19 11/16 500 20 1/2 521 20 1/2 521 20 1/2 521 20 1/2 521 22 1/2 572 22 1/2 572
F 19 483 19 483 19 483 19 483 21 533 21 533 21 533 21 533 21 533 21 533
G 1/2NPT 1/2NPT 1/2NPT 1/2NPT 1/2NPT 1/2NPT 1/2NPT 3/4NPT 3/4NPT 3/4NPT
(gas inlet)
H 51 7/8 1318 59 1499 59 1499 59 1499 61 1549 61 1549 61 1549 63 1600 63 1600 63 1600
I 5 127 6 152 6 152 6 152 6 152 6 152 6 152 6 152 6 152 6 152
(vent dia)
J 27 3/4 705 27 3/4 705 27 3/4 705 27 3/4 705 27 3/4 705 27 3/4 705 27 3/4 705 27 3/4 705 27 3/4 705 27 3/4 705
K 1 1/2NPT 1 1/2NPT 1 1/2NPT 1 1/2NPT 2NPT 2NPT 2NPT 1 1/2NPT 1 1/2NPT 1 1/2NPT
L 1 1/2NPT 1 1/2NPT 1 1/2NPT 1 1/2NPT 2NPT 2 NPT 2NPT 1 1/2NPT 1 1/2NPT 1 1/2NPT
Appox.
Shipping 400 181 470 213 470 213 470 213 603 274 603 274 603 274 725 329 725 329 725 329
Weight lbs. K.g lbs. K.g lbs. K.g lbs. K.g lbs. K.g lbs. K.g lbs. K.g lbs. K.g lbs. K.g lbs. K.g
STD.
Approx.
Shipping - - - - - - - - 686 311 686 311 686 311 833 378 833 378 833 378
Weight lbs. Kg. lbs. Kg. lbs. Kg. lbs. Kg. lbs. Kg. lbs. Kg.
ASME
FRONT VIEW TOP VIEW BACK VIEW
TABLE 1. ROUGH-IN-DIMENSIONS
TANK APPROX U.S Gallons/Hr. and Litres/Hr at TEMPERATURE RISE INDICATED
CAPACITY EFF. F° 36F° 40F° 50F° 54F° 60F° 70F° 72F° 80F° 90F° 100F° 108F° 110F° 120F° 126F° 13F° 140F°
Model Btuh KW U.S.Gal. Litres % C° 20C° 22.2C° 27.7C° 30C° 33.3C° 38.8C° 40C° 44.4C° 50C° 55.5C° 60C° 61.1C° 66.6C° 70C° 72.2C° 77.7C°
BTI-120 120,000 71 80 GPH 319 287 230 213 192 164 160 144 128 115 106 105 96 91 88 82
35 269 LPH 1209 1088 870 806 725 622 604 544 484 435 403 396 363 345 335 311
BTI-154 154,000 81 80 GPH 410 369 295 273 246 211 205 184 164 148 137 134 123 117 113 105
45 307 LPH 1551 1396 1117 1034 931 798 776 698 621 559 517 508 465 443 430 399
BTI-180 180,000 81 80 GPH 479 431 345 319 287 246 240 216 192 172 160 157 144 137 133 123
53 307 LPH 1813 1632 1306 1209 1088 933 907 816 725 653 604 593 544 518 502 466
BTI-190 190,000 81 80 GPH 506 455 364 337 303 260 253 228 202 182 169 165 152 144 140 130
56 307 LPH 1914 1723 1378 1276 1148 984 957 861 766 689 638 626 574 547 530 492
BTI-199 199,000 81 80 GPH 530 477 381 353 318 272 265 238 212 191 177 173 159 151 147 136
58 307 LPH 2005 1804 1443 1336 1203 1031 1002 902 802 722 668 656 601 573 555 516
BTI-250 250,000 100 80 GPH 665 599 479 444 399 342 333 299 266 240 222 218 200 190 184 171
73 379 LPH 2519 2267 1813 1679 1511 1295 1259 1133 1007 907 840 824 756 720 697 648
BTI-275 275,000 100 80 GPH 732 659 527 488 439 376 366 329 293 263 244 240 220 209 203 188
81 379 LPH 2770 2493 1995 1847 1662 1425 1385 1247 1108 997 923 907 831 792 767 712
BTI-310 310,000 85 80 GPH 825 743 594 550 495 424 413 371 330 297 275 270 248 236 228 212
91 322 LPH 3123 2811 2249 2082 1874 1606 1561 1405 1249 1124 1041 1022 937 892 865 803
BTI-366 366,000 85 80 GPH 974 877 701 649 584 501 487 438 390 351 325 319 292 278 270 250
107 322 LPH 3687 3318 2655 2458 2212 1896 1844 1659 1475 1327 1229 1207 1106 1053 1021 948
BTI-400 399,000 85 80 GPH 1062 956 765 708 637 546 531 478 425 382 354 348 319 303 294 273
117 322 LPH 4020 3618 2894 2680 2412 2067 2010 1809 1608 1447 1340 1315 1206 1148 1113 1034
TABLE 2. RECOVERY CAPACITIES, based on 80% efficiency
TABLE 3. GAS AND ELECTRICAL CHARACTERISTICS
F
TOP
OUTLET
1 1/2” NPT
TOP
INLET
1 1/2” NPT
Manifold Pressure Maximum Supply Pressure Electrical Characteristics
Model Type of Gas Inches vs. W.C. kPa Inches W.C. kPa Volts/Hz Amperes
Natrual 3.5 0.87 14 3.48 120/60 < 5
Propane 10 2.49 14 3.48 120/60 < 5
BTI 120-400
Minimum Supply Pressure, Natural Gas: 4.5 inches W.C. (1.12kPa)
Minimum Supply Pressure, Propane Gas: 11.0 inches W.C. (1.74kPa)
Minimum Pressures must be maintained under both load and no load (static and dynamic) conditions.