RT-PRC007-EN
34
Performance
Data
Table PD-13 — Supply Fan Performance — 40 and 50 Ton
Notes:
1. Supply fan performance table includes internal resistance of rooftop. For total static pressure
determination, system external static must be added to appropriate component static pressure drops,
(evaporator coil, filters, optional economizer, optional heating system, optional roof curb).
2. The pressure drop from the supply fan to the space cannot exceed 2.50”.
3. Maximum air flow for 40 ton — 17,600 cfm, 50 ton — 20,000 cfm.
4. Maximum motor horsepower for 40 ton — 15 hp, 50 ton — 20 hp.
2.50
2.75
3.00
3.25
3.50
SCFM
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
12000
640
8.45
670
9.25
700
10.03
727
10.81
755
11.61
13000
640
9.23
671
10.12
701
10.98
729
11.85
756
12.69
14000
647
10.16
674
11.04
700
11.89
729
12.85
757
13.79
15000
653
11.14
680
12.05
706
12.97
731
13.89
757
14.86
16000
659
12.23
687
13.16
713
14.14
738
15.10
762
16.10
17000
666
13.45
694
14.42
719
15.37
744
16.39
768
17.39
18000
677
14.81
700
15.76
726
16.78
751
17.77
774
18.81
19000
690
16.29
711
17.27
734
18.29
758
19.34
782
20.41
20000
701
17.83
724
18.91
745
19.94
765
20.99
788
22.12
Static Pressure (in. wg)
1
Table PD-13 — Supply Fan Performance — 40 and 50 Ton Continued
Static Pressure (in. wg)
1
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
SCFM
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
12000
307
2.29
353
2.86
394
3.45
436
4.11
471
4.75
509
5.43
543
6.14
575
6.89
606
7.63
13000
324
2.79
368
3.40
407
4.06
446
4.73
482
5.43
515
6.13
550
6.87
582
7.65
612
8.44
14000
341
3.35
384
4.03
422
4.74
457
5.42
494
6.19
525
6.93
556
7.69
589
8.49
619
9.32
15000
359
3.99
401
4.77
437
5.48
471
6.24
504
6.99
537
7.82
566
8.62
595
9.42
625
10.27
16000
376
4.72
418
5.60
452
6.32
485
7.14
515
7.92
548
8.77
578
9.65
604
10.49
632
11.36
17000
394
5.53
434
6.50
468
7.26
500
8.12
529
8.97
558
9.79
589
10.73
616
11.65
641
12.54
18000
413
6.42
451
7.48
485
8.34
515
9.18
544
10.11
571
10.99
598
11.89
628
12.88
654
13.87
19000
431
7.42
469
8.55
501
9.53
530
10.37
559
11.34
585
12.29
611
13.22
637
14.17
665
15.24
20000
449
8.52
486
9.72
518
10.83
547
11.69
573
12.66
600
13.69
625
14.70
648
15.64
675
16.71
60 Hz