Bryant Durapac Plus Series 551a - Manual (Page 23)

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Table 12 — Fan Perform ance — 551A240
LEGEND
*Standard low-medium static drive range is 1002 to 1151 rpm. Alternate
high-static drive range is 1193 to 1369. Other rpms require a field-
supplied drive.
NOTES:
1. Maximum continuous bhp for the standard motor is 9.47 (for 208-v
units) and 10.33 (for 230 and 460-v units). The maximum continu-
ous watts is 7915 (for 208-v units) and 8640 (for 230 and 460-v
units). Do not adjust motor rpm such that motor maximum bhp
and/or watts is exceeded at the maximum operating cfm.
2. Static pressure losses (i.e., EconoMi$er) must be added to exter-
nal static pressure before entering Fan Performance table.
3. Interpolation is permissible. Do not extrapolate.
4. Fan performance is based on wet coils, clean filters, and casing
losses. See Table 13 for accessory/FIOP static pressure
information.
5. Extensive motor and drive testing on these units ensures that the
full bhp and watts range of the motor can be utilized with confi-
dence. Using your fan motors up to the watts or bhp rating shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected.
6. Use of a field-supplied motor may affect wiring size. Contact your
Bryant representative for details.
551A240 (20 TONS)*
Cfm
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
6,000 753 2385 2.83 816 2579 3.06 884 2807 3.33 949 3040 3.61 1010 3277 3.89
6,500 793 2738 3.25 861 2959 3.51 925 3186 3.78 987 3418 4.05 1045 3653 4.33
7,000 844 3151 3.74 908 3372 4.00 968 3598 4.27 1026 3828 4.54 1082 4062 4.82
7,500 895 3596 4.27 955 3817 4.53 1013 4042 4.80 1068 4271 5.07 1121 4504 5.34
8,000 947 4073 4.83 1004 4294 5.09 1058 4518 5.36 1111 4747 5.63 1162 4978 5.91
8,500 999 4583 5.44 1053 4803 5.70 1105 5027 5.96 1155 5255 6.23 1204 5485 6.51
9,000 1052 5125 6.08 1103 5345 6.34 1152 5569 6.61 1200 5796 6.88 1247 6025 7.15
9,500 1105 5699 6.76 1153 5919 7.02 1200 6142 7.29 1246 6369 7.56 1291 6598 7.83
10,000 1158 6306 7.48 1204 6526 7.74 1249 6750 8.01 1293 6975 8.27 1336 7203 8.55
551A240 (20 TONS) (cont)*
Cfm
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
6,000 1069 3517 4.17 1125 3761 4.46 1180 4006 4.75 1232 4255 5.05 1283 4506 5.35
6,500 1102 3891 4.62 1156 4132 4.90 1208 4377 5.19 1259 4623 5.48 1308 4871 5.78
7,000 1136 4299 5.10 1188 4538 5.38 1239 4780 5.67 1288 5025 5.96 1335 5271 6.25
7,500 1173 4739 5.62 1223 4977 5.90 1272 5217 6.19 1319 5460 6.48 1365 5705 6.77
8,000 1211 5212 6.18 1259 5449 6.46 1306 5688 6.75 1352 5929 7.03 1396 6172 7.32
8,500 1251 5718 6.78 1297 5954 7.06 1342 6192 7.35 1386 6431 7.63 1429 6673 7.92
9,000 1292 6257 7.42 1337 6492 7.70 1380 6729 7.98 1423 6967 8.27 1464 7207 8.55
9,500 1335 6830 8.10 1377 7063 8.38 1419 7299 8.66 1460 7536 8.94 1501 7776 9.22
10,000 1378 7434 8.82 1419 7667 9.10 1460 7902 9.37 1499 8138 9.65 1538 8377 9.94
551A240 (20 TONS) (cont)*
Cfm
Available External Static Pressure (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
6,000 1332 4750 5.65 1380 5015 5.95 1427 5272 6.25 1472 5531 6.56 1517 5793 6.87
6,500 1356 5122 6.08 1402 5375 6.38 1447 5630 6.68 1492 5886 6.98 1535 6144 7.29
7,000 1381 5519 6.55 1427 5770 6.84 1471 6022 7.14 1514 6276 7.45 — — —
7,500 1409 5951 7.06 1453 6199 7.35 1496 6449 7.65 1538 6701 7.95 — — —
8,000 1440 6417 7.61 1482 6663 7.90 1523 6911 8.20 — — — — — —
8,500 1471 6916 8.20 1513 7161 8.49 — — — — — — — — —
9,000 1505 7449 8.84 1545 7693 9.13 — — — — — — — — —
9,500 1540 8016 9.51 — — — — — — — — — — — —
10,000 — — — — — — — — — — — — — — —
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor