RT-PRC010-EN
56
Table PD-38— Supply Fan Performance With VARIABLE FREQUENCY DRIVE or WITHOUT INLET VANES — 60, 70 and 75 Tons
Cfm
Total Static Pressure
Std
.250
.500
.750
1.000
1.250
1.500
1.750
2.000
Air
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
14000
295
1.55
366
2.32
441
3.34
505
4.44
559
5.65
606
6.89
648
8.15
687
9.41
15000
305
1.80
373
2.59
442
3.60
508
4.74
563
5.98
611
7.29
654
8.63
693
9.97
16000
316
2.08
380
2.90
444
3.88
509
5.08
566
6.33
615
7.69
659
9.10
699
10.52
17000
327
2.38
389
3.24
448
4.20
510
5.43
568
6.72
619
8.09
663
9.55
704
11.06
18000
338
2.72
399
3.62
454
4.60
512
5.78
569
7.15
621
8.53
667
10.02
708
11.58
19000
349
3.09
408
4.03
461
5.04
515
6.18
570
7.59
623
9.02
670
10.51
712
12.11
20000
361
3.48
419
4.48
469
5.52
519
6.65
572
8.03
624
9.55
672
11.06
715
12.66
21000
372
3.91
429
4.97
478
6.04
525
7.19
575
8.51
625
10.07
673
11.66
718
13.27
22000
384
4.37
440
5.51
488
6.61
533
7.79
579
9.07
627
10.60
674
12.27
719
13.93
23000
395
4.87
450
6.08
497
7.22
541
8.43
584
9.72
629
11.18
675
12.88
720
14.63
24000
407
5.41
461
6.70
508
7.88
550
9.12
591
10.43
633
11.85
677
13.51
721
15.33
25000
419
5.98
473
7.37
518
8.59
559
9.86
599
11.20
639
12.61
680
14.20
723
16.03
26000
431
6.60
484
8.08
528
9.35
569
10.66
607
12.03
645
13.45
685
14.99
725
16.76
27000
443
7.26
495
8.83
539
10.16
579
11.50
616
12.90
653
14.36
690
15.89
728
17.58
Cfm
Total Static Pressure
Std
2.250
2.500
2.750
3.000
3.250
3.500
3.750
4.000
Air
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
14000
723
10.67
757
11.95
788
13.24
818
14.55
846
15.89
873
17.25
898
18.63
923
20.04
15000
730
11.32
764
12.68
796
14.04
826
15.41
855
16.81
882
18.22
908
19.65
933
21.11
16000
736
11.96
771
13.39
803
14.84
834
16.28
863
17.74
891
19.22
917
20.71
943
22.22
17000
741
12.57
777
14.10
810
15.62
841
17.15
870
18.69
899
20.23
926
21.79
951
23.36
18000
746
13.17
782
14.78
815
16.39
847
18.01
877
19.63
906
21.25
933
22.88
959
24.52
19000
751
13.76
787
15.44
821
17.14
853
18.84
883
20.54
912
22.25
940
23.96
967
25.68
20000
755
14.36
791
16.10
826
17.87
858
19.65
889
21.44
918
23.23
946
25.03
973
26.83
21000
758
14.97
795
16.76
830
18.59
863
20.45
894
22.32
924
24.19
952
26.08
979
27.96
22000
761
15.64
799
17.44
834
19.32
867
21.23
899
23.18
929
25.13
958
27.10
985
29.07
23000
762
16.37
801
18.17
838
20.06
871
22.03
903
24.03
933
26.06
962
28.10
990
30.15
24000
764
17.14
803
18.96
840
20.86
875
22.84
907
24.89
938
26.98
967
29.09
995
31.22
25000
765
17.94
805
19.82
842
21.72
878
23.70
910
25.77
942
27.90
971
30.07
1000
32.27
26000
766
18.72
806
20.70
844
22.65
880
24.64
913
26.71
945
28.86
975
31.07
1004
33.32
27000
768
19.51
807
21.57
845
23.62
881
25.65
915
27.72
948
29.87
978
32.09
1008
34.38
Cfm
Total Static Pressure
Std
4.250
4.500
4.750
5.000
5.250
5.500
5.750
6.000
Air
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
14000
947
21.47
970
22.92
993
24.39
1015
25.89
1036
27.40
1057
28.93
1077
30.49
1097
32.06
15000
957
22.59
981
24.09
1003
25.61
1025
27.16
1047
28.72
1068
30.30
1088
31.91
1108
33.53
16000
967
23.75
991
25.30
1014
26.87
1036
28.46
1057
30.08
1078
31.71
1099
33.36
1119
35.03
17000
976
24.94
1000
26.55
1023
28.17
1046
29.81
1067
31.48
1089
33.16
1109
34.86
1129
36.58
18000
985
26.17
1009
27.83
1032
29.51
1055
31.20
1077
32.92
1098
34.65
1119
36.40
19000
992
27.40
1017
29.13
1041
30.87
1064
32.63
1086
34.40
1108
36.19
1129
37.99
20000
999
28.63
1024
30.44
1048
32.25
1072
34.08
1094
35.91
1116
37.76
21000
1006
29.85
1031
31.74
1055
33.63
1079
35.53
1102
37.44
1124
39.35
22000
1012
31.04
1037
33.02
1062
35.00
1086
36.98
1109
38.96
23000
1017
32.21
1043
34.27
1068
36.34
1092
38.41
1116
40.47
24000
1022
33.35
1048
35.50
1074
37.65
1098
39.80
1122
41.96
25000
1027
34.48
1053
36.70
1079
38.93
1104
41.17
1127
43.41
26000
1031
35.60
1058
37.89
1084
40.20
1109
42.52
27000
1036
36.71
1062
39.07
1088
41.45
1113
43.85
Notes:
1. Fan performance for 60, 70 and 75 ton rooftops are identical. However, note maximum motor hp size for each size. Contact your local Trane representative for information on
non-standard motors.
2. Shaded areas at table extremes note non-standard Bhp or Rpm selection. Contact your local Trane representative for more information.
3. 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 exhaust fan, optional heating system, optional cooling only extended casing, optional roof curb).
4. Maximum Cfm (for UL approval) as follows: 60 Ton — 27,000 Cfm , 70 & 75 Ton — 30,000 Cfm
5. Minimum motor horsepower is 10 hp.
6. Maximum motor horsepower is 40 hp.
7. Maximum motor Rpm is 1,130.
8. See RT-EB-104 for further details.
(60, 70, 75 Tons)
Performance
Data