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RT-PRC002-EN
*Indicates both downflow and horizontal units.
Performance
Data
(20 Ton)
Standard Efficiency
For Standard Evaporator Fan Speed (RPM), reference Table PD-31.
For Standard Motor & High Static Drive Accessory Fan Speed (RPM), reference Table PD-32.
For Oversized Evaporator Fan Speed (RPM), reference Table PD-33.
Fan motor heat (MBH) = 3.15 x Fan BHP
Data includes pressure drop due to wet coils and filters.
No accessories or options are included in pressure drop data.
Refer to Table PD-35 to determine add’l static pressure drop due to other options/accessories.
Notes:
1. Field Supplied Fan Sheave BK190 Required. Field Supplied Belt may be necessary.
2. 7.5 HP Standard Motor with Field Supplied Motor Sheave IVP50 Required. Field Supplied Belt
may be necessary.
3. 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.
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.
Table PD-20 — Evaporator Fan Performance — 20 Ton — TC*240B — Continued
External Static Pressure (Inches of Water)
1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00
CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
5 HP Standard Motor & Sheaves 5 HP Standard Motor & High Static Drive Accessory
6400 744 3.32 768 3.52 790 3.72 811 3.91 833 4.13 855 4.36 877 4.59 897 4.82 917 5.05 936 5.29
7200 773 4.04 795 4.27 817 4.50 839 4.74 860 4.96 880 5.19 898 5.41 917 5.64 937 5.88 957 6.14
8000 811 4.96 830 5.18 848 5.40 867 5.64 887 5.90 907 6.16 927 6.42 946 6.68 964 6.93 982 7.18
8800 852 6.08 869 6.30 887 6.53 904 6.77 921 7.01 938 7.26 955 7.52 973 7.81 991 8.09 — —
9600 895 7.40 911 7.63 928 7.86 944 8.11 960 8.36 976 8.61 ————————
7.5 HP Oversized Motor & Sheaves
Table PD-20 — Evaporator Fan Performance — 20 Ton — TC*240B
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
5 HP Standard Motor & Field Supplied 5 HP Standard Motor & Sheaves
Low Static Drive (1)
6400 — — 514 1.69 546 1.88 574 2.05 599 2.21 624 2.37 648 2.54 671 2.71 695 2.90 720 3.11
7200 527 2.08 562 2.29 592 2.50 619 2.71 644 2.91 667 3.09 689 3.26 711 3.45 732 3.64 752 3.83
8000 578 2.79 610 3.03 639 3.26 666 3.50 690 3.73 712 3.96 733 4.16 753 4.35 773 4.55 792 4.75
8800 629 3.65 659 3.93 687 4.18 712 4.43 736 4.69 758 4.96 778 5.20 797 5.43 816 5.65 834 5.86
9600 681 4.67 709 4.99 735 5.27 759 5.54 782 5.82 804 6.11 824 6.39 843 6.67 861 6.92 878 7.16
5 HP Standard Motor & Sheaves (2) 7.5 HP Oversized Motor & Sheaves
