Bryant Durapac Plus Series 551a - Manual (Page 22)

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Table 11 — Fan Perfor m ance — 551A180
LEGEND
*Standard low-medium static drive range is 873 to 1021 rpm. Alternate
high-static drive range is 1025 to 1200. Other rpms require a field-
supplied drive.
NOTES:
1. Maximum continuous bhp for the standard motor is 6.13. The max-
imum continuous watts is 5180. 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.
551A180 (15 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
4500 753 1307 1.53 753 1307 1.53 784 1397 1.64 859 1635 1.92 928 1880 2.20
4800 747 1384 1.62 747 1384 1.62 806 1563 1.83 878 1808 2.12 946 2060 2.42
5100 741 1465 1.72 752 1500 1.76 828 1745 2.05 898 1996 2.34 964 2255 2.65
5700 735 1659 1.95 805 1895 2.22 876 2156 2.53 942 2423 2.84 1004 2696 3.16
6000 759 1854 2.18 832 2118 2.48 901 2388 2.80 965 2663 3.12 1026 2943 3.45
6300 790 2088 2.45 860 2360 2.77 926 2638 3.09 988 2920 3.43 1048 3208 3.76
6600 821 2340 2.74 888 2621 3.07 952 2906 3.41 1013 3196 3.75 1070 3491 4.10
6900 852 2611 3.06 917 2900 3.40 979 3194 3.75 1038 3492 4.10 1094 3794 4.45
7200 883 2903 3.40 946 3200 3.75 1006 3501 4.11 1063 3807 4.47 1118 4117 4.83
7500 914 3215 3.77 975 3521 4.13 1033 3830 4.49 1089 4143 4.86 1142 4461 5.23
551A180 (15 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
4500 993 2133 2.50 1055 2394 2.81 1114 2662 3.12 1170 2938 3.45 1224 3220 3.78
4800 1009 2319 2.72 1070 2585 3.03 1127 2859 3.35 1183 3139 3.68 1236 3427 4.02
5100 1026 2521 2.96 1086 2794 3.28 1142 3073 3.60 1196 3359 3.94 1248 3650 4.28
5700 1064 2975 3.49 1120 3260 3.82 1174 3551 4.17 1226 3848 4.51 1277 4151 4.87
6000 1083 3228 3.79 1139 3520 4.13 1192 3817 4.48 1243 4119 4.83 1292 4427 5.19
6300 1104 3501 4.11 1158 3799 4.46 1210 4102 4.81 1260 4410 5.17 1309 4724 5.54
6600 1125 3791 4.45 1178 4095 4.80 1229 4405 5.17 1278 4720 5.54 1326 5039 5.91
6900 1147 4101 4.81 1199 4412 5.18 1249 4728 5.55 1297 5050 5.92 — — —
7200 1170 4431 5.20 1221 4749 5.57 1270 5072 5.95 — — — — — —
7500 1193 4781 5.61 1243 5107 5.99 — — — — — — — — —
551A180 (15 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
4500 1276 3509 4.12 1326 3805 4.46 1375 4107 4.82 1421 4414 5.18 1467 4728 5.55
4800 1287 3721 4.36 1336 4020 4.72 1384 4326 5.07 1430 4638 5.44 1475 4955 5.81
5100 1299 3949 4.63 1347 4253 4.99 1395 4563 5.35 1440 4879 5.72 — — —
5700 1325 4458 5.23 1373 4772 5.60 1418 5091 5.97 — — — — — —
6000 1340 4741 5.56 1387 5060 5.93 — — — — — — — — —
6300 1356 5043 5.91 — — — — — — — — — — — —
6600 — — — — — — — — — — — — — — —
6900 — — — — — — — — — — — — — — —
7200 — — — — — — — — — — — — — — —
7500 — — — — — — — — — — — — — — —
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor