Specifications

40
PERFORMANCE DATA (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
LEGEND
NOTES:
1.
Boldface
indicates a field-supplied drive is required. (See Note 6.)
2. indicates a field-supplied motor and drive are required.
3. Maximum continuous bhp is 3.70 for standard motors; 5.25 for high-static
motors. Extensive motor and electrical testing on these units ensures that
the full range of the motor can be utilized with confidence. Using your fan
motors up to the ratings shown will not result in nuisance tripping or prema-
ture motor failure. Unit warranty will not be affected. For additional informa-
tion on motor performance, refer to Evaporator-Fan Motor Data tables on
pages 42 and 43.
4. Values include losses for filters, unit casing, and wet coils. See page 43 for
accessory/FIOP static pressure information.
5. Use of a field-supplied motor may affect wire sizing. Contact Bryant repre-
sentative to verify.
6. Standard motor drive range: 860 to 1080 rpm. High-static motor drive range:
830 to 1130 rpm. All other rpms require field-supplied drive.
7. Interpolation is permissible. Do not extrapolate.
551B120 (10 TONS) — STANDARD AND HIGH-STATIC MOTOR (BELT DRIVE)
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
3000 459 0.35 595 0.74 657 0.88 716 1.05 770 1.24
3100 478 0.46 605 0.79 667 0.94 725 1.10 779 1.30
3200 500 0.57 615 0.85 679 1.01 734 1.16 787 1.36
3300 519 0.62 625 0.90 691 1.08 744 1.23 796 1.43
3400 537 0.69 637 0.97 702 1.16 753 1.30 805 1.50
3500 561 0.77 647 1.03 712 1.23 762 1.38 814 1.57
3600 592 0.86 658 1.10 721 1.30 773 1.47 823 1.65
3700 607 0.97 670 1.18 732 1.37 782 1.56 833 1.73
3800 621 1.05 681 1.25 742 1.45 795 1.66 842 1.82
3900 636 1.13 693 1.32 751 1.53 808 1.76 851 1.92
4000 650 1.21 705 1.40 761 1.61 819 1.86
861 2.02
4100 665 1.30 717 1.48 772 1.71 830 1.96
871 2.13
4200 680 1.39 728 1.57 783 1.81 839 2.05
883 2.25
4300 696 1.49 739 1.66 794 1.91 848 2.14
896 2.38
4400 711 1.60 750 1.75 805 2.02 857 2.24
908 2.51
4500 727 1.70 762 1.85 817 2.12
8672.359192.63
4600 742 1.82 774 1.96 828 2.23
8772.469292.75
4700 758 1.94 786 2.07 840 2.34
8882.599382.87
4800 773 2.06 799 2.18 852 2.46
8992.729472.98
4900 789 2.19 812 2.30
8632.579102.869573.11
5000 805 2.32 826 2.43
8752.709212.999663.24
551B120 (10 TONS) — STANDARD AND HIGH-STATIC MOTOR (BELT DRIVE) (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
3000 822 1.44
872 1.69 919 1.88 950 1.70 962 1.82
3100 829 1.50
882 1.73 932 2.00 965 1.80 971 1.95
3200
837 1.56 886 1.78 943 2.06 978 1.91 984 2.07
3300
845 1.63 892 1.85 947 2.10 988 2.05 995 2.20
3400
853 1.71 899 1.93 951 2.17 995 2.17 1008 2.32
3500
862 1.78 907 2.01 959 2.24 1000 2.33 1021 2.47
3600
871 1.86 915 2.09 965 2.32 1005 2.46 1036 2.59
3700
879 1.95 927 2.17 973 2.38 1013 2.57 1046 2.73
3800
889 2.03 934 2.26 980 2.48 1022 2.69 1058 2.87
3900
898 2.12 942 2.36 987 2.59 1030 2.81 1068 3.01
4000
908 2.21 950 2.46 994 2.70 1037 2.92 1077 3.14
4100
917 2.32 960 2.55 1001 2.81 1045 3.04 1085 3.21
4200
925 2.44 969 2.65 1009 2.92 1051 3.17 1092 3.40
4300
935 2.56 979 2.77 1018 3.03 1058 3.29 1100 3.53
4400
945 2.68 988 2.89 1028 3.14 1066 3.41 1106 3.67
4500
955 2.82 996 3.02 1037 3.25 1074 3.54
1113 3.81
4600
9672.9610053.1610463.3810843.66
1121 3.95
4700
9803.1110153.3010563.52
1093 3.79 1129 4.09
4800
9923.2610253.4510643.67
1103 3.92 1137 4.22
4900
1003 3.41 1036 3.61
1073 3.83 1112 4.07 1147 4.36
5000
1014 3.56
1049 3.79 1083 4.00 1121 4.23 1157 4.50
Bhp —
Brake Horsepower Input to Fan
FIOP —
Factory-Installed Option