48 RT-PRC024-EN
Performance Data
(25 Tons Standard Efficiency)
Table 30. Evaporator Fan Performance 25 Tons TC*300B Downflow or Horizontal
External Static Pressure (Inches of Water)
.10 .20 .30 .40 .50 .60 .70 .80 .90 1.00
CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
7.5-HP Standard Motor & Low Static Drive Accessory 7.5-HP Standard Motor & Sheaves
7000 — — — — 593 2.42 619 2.62 643 2.80 667 2.98 690 3.16 712 3.35 733 3.53 754 3.73
7500 — — 595 2.66 624 2.88 649 3.10 673 3.31 695 3.50 717 3.68 738 3.88 759 4.08 779 4.28
8000 595 2.92 627 3.16 655 3.39 679 3.63 702 3.86 724 4.07 745 4.28 766 4.48 786 4.68 805 4.90
8500 628 3.47 659 3.73 686 3.97 710 4.23 732 4.47 754 4.71 774 4.94 794 5.15 813 5.36 832 5.58
9000 661 4.08 691 4.36 717 4.62 741 4.89 763 5.15 784 5.41 803 5.66 822 5.89 841 6.12 859 6.35
9500 695 4.76 723 5.06 749 5.34 772 5.62 794 5.90 814 6.18 833 6.45 852 6.71 870 6.95 887 7.19
10000 729 5.52 755 5.84 781 6.13 804 6.42 825 6.72 844 7.01 863 7.31 881 7.59 899 7.86 916 8.11
10500 762 6.35 788 6.69 812 7.00 835 7.31 856 7.62 875 7.93 894 8.24 911 8.54 — — — —
11000 796 7.27 821 7.63 844 7.96 867 8.3 887 8.60 — — — — — — — — — —
7.5-HP Standard Motor & High Static Drive Accessory
Continued
For Standard Evaporator Fan Speed (RPM), reference Table 50.
For Standard Motor & Low Static Drive Accessory Fan Speed
(RPM), reference Table 51.
For Oversized Evaporator Fan Speed (RPM), reference Table 53.
Fan motor heat (MBH) = 3.15 x Fan BHP.
Notes:
Data includes pressure drop due to standard filters and wet coils.
No accessories or options are included in pressure drop data.
Refer to Table 54 to determine additional static pressure
drop due to other options/accessories.
Factory supplied motors, in commercial equipment, are definite
purpose motors, specifically designed and tested to operate
reliably and continuously at all cataloged conditions. Using the
full horsepower range of our fan motors as shown in our tabular
data will not result in nuisance tripping or premature motor
failure. Our product’s warranty will not be affected.
*For 380V/60 Hz units, the oversized motor is used as the
standard motor. Refer to "Motor & Sheave/Fan Speed" tables to
determine operating range.
External Static Pressure (Inches of Water)
1.10 1.20 1.30 1.40 1.50
CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
7.5-HP Standard Motor & Sheaves
7000 776 3.95 798 4.18 820 4.40 841 4.62 862 4.84
7500 798 4.48 818 4.71 839 4.95 860 5.19 880 5.42
8000 824 5.11 842 5.32 860 5.55 880 5.80 899 6.06
8500 850 5.81 868 6.03 885 6.26 902 6.49 920 6.74
9000 877 6.58 894 6.81 911 7.05 928 7.29 944 7.53
9500 904 7.43 921 7.67 938 7.92 954 8.17 970 8.42
10000 933 8.36 949 8.62 — — — — — —
10500 — — — — — — — — — —
11000 — — — — — — — — — —
7.5-HP Standard Motor & High Static Drive Accessory
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