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PERFORMANCE DATA — 548F (cont)
FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont)
LEGEND See General Fan Performance notes on page 27.
LEGEND
*Motor drive range: 770 to 1175 rpm. All other rpms require a field-
supplied drive.
See General Fan Performance notes on page 27.
NOTES:
1. Boldface indicates field-supplied drive is required.
2. Maximum continuous bhp is 1.00.
548F048 (4 TONS) — STANDARD MOTOR (DIRECT DRIVE)*
Airflow
(Cfm)
Low Speed High Speed
208 v 230, 460, 575 v 208 v 230, 460, 575 v
ESP Bhp Watts ESP Bhp Watts ESP Bhp Watts ESP Bhp Watts
1200 0.93 0.41 458 0.97 0.45 506 1.04 0.51 572 1.09 0.56 632
1300 0.86 0.42 471 0.90 0.46 521 0.96 0.52 589 1.02 0.58 651
1400 0.78 0.45 503 0.84 0.49 556 0.90 0.54 616 0.96 0.60 681
1500 0.73 0.47 536 0.76 0.52 593 0.83 0.56 631 0.89 0.62 698
1600 0.67 0.49 557 0.70 0.54 616 0.75 0.58 654 0.82 0.64 723
1700 0.60 0.52 584 0.63 0.57 646 0.67 0.60 678 0.74 0.66 750
1800 0.51 0.54 610 0.54 0.60 674 0.62 0.62 698 0.69 0.68 772
1900 0.40 0.56 629 0.45 0.62 696 0.54 0.64 720 0.62 0.70 796
2000 0.32 0.58 661 0.33 0.65 731 0.47 0.66 744 0.54 0.73 823
Bhp — Brake Horsepower Input to Fan
ESP — External Static Pressure (in. wg)
Watts — Input Watts to Motor
548F048 (4 TONS) — ALTERNATE MOTOR (BELT DRIVE)*
Airflow
(Cfm)
External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1200 708 0.26 256 836 0.36 359 941 0.47 464 1033 0.57 572 1116 0.69 683
1300 743 0.31 307 868 0.42 417 971 0.53 530 1062 0.65 645 1143 0.77 764
1400 780 0.37 364 900 0.49 483 1002 0.61 603 1091 0.73 726 1172 0.86 851
1500 816 0.43 428 934 0.56 556 1033 0.69 685 1121 0.82 815 1201 0.95 947
1600 854 0.50 501 968 0.64 638 1065 0.78 774 1152 0.92 912 — — —
1700 892 0.59 582 1002 0.73 728 1098 0.88 872 ——————
1800 930 0.68 672 1038 0.83 826 1131 0.99 980 ——————
1900 969 0.78 772 1073 0.94 935 —————————
2000 10080.89881————————————
548F048 (4 TONS) — ALTERNATE MOTOR (BELT DRIVE)* (cont)
Airflow
(Cfm)
External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
1200 1191 0.80 799 1261 0.92 917 —————————
1300 1218 0.89 885 ————————————
1400 1246 0.99 980 ————————————
1500 ———————————————
1600 ———————————————
1700 ———————————————
1800 ———————————————
1900 ———————————————
2000 ———————————————
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
548F