70
General Fan Performance Notes:
1. Interpolation is permissible. Do not extrapolate.
2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static
pressure caused by any FIOPs or accessories.
3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories
may add static pressure losses. Selection software is available, through your salesperson, to help you select the best
motor/drive combination for your application.
4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinations would
work, Carrier recommends the lower horsepower option.
5. For information on the electrical properties of Carrier motors, please see the electrical information section of this
book.
6. For more information on the performance limits of Carrier motors, see the application data section of this book.
7. The EPACT (Energy Policy Act) regulates energy requirements for specific types of indoor fan motors. Motors regulated
by EPACT include any general purpose, T-frame (three-digit, 143 and larger), single-speed, foot mounted, polyphase,
squirrel cage induction motors of NEMA (National Electrical Manufacturers Association) design A and B, manufactured
for use in the United States. Ranging from 1 to 200 Hp, these continuous-duty motors operate on 230 and 460 volt,
60 Hz power. If a motor does not fit into these specifications, the motor does not have to be replaced by an EPACT com-
pliant energy-efficient motor. Variable-speed motors are exempt from EPACT compliance requirements.
Boldface indicates field-supplied drive is required (Standard motor,
motor pulley P/N KR11HY163, blower pulley P/N KR51BM415, belt P/N
KR29AF049) 368-509 rpm range.
Table C — 48LC**14 — 12.5 Ton Horizontal Supply
CFM
Available External Static Pressure (in. wg)
0.2
0.4
0.6
0.8
1.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
3750
461
0.76
541
1.16
609
1.61
669
2.08
724
2.59
4063
485
0.90
562
1.32
628
1.79
687
2.28
741
2.81
4375
510
1.05
584
1.50
648
1.98
706
2.50
759
3.05
4688
535
1.23
606
1.70
669
2.20
725
2.75
777
3.32
5000
561
1.42
629
1.92
690
2.45
745
3.01
796
3.60
5313
587
1.64
652
2.16
711
2.71
765
3.30
815
3.91
5625
614
1.89
677
2.42
734
3.00
786
3.61
835
4.24
5938
641
2.16
701
2.72
756
3.32
808
3.95
855
4.60
6250
668
2.45
726
3.04
780
3.66
830
4.31
876
4.99
CFM
Available External Static Pressure (in. wg)
1.2
1.4
1.6
1.8
2.0
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
3750
774
3.12
820
3.68
864
4.26
905
4.86
944
5.49
4063
790
3.37
836
3.94
880
4.55
921
5.17
959
5.81
4375
807
3.63
853
4.23
896
4.85
936
5.50
975
6.16
4688
825
3.91
870
4.53
912
5.18
953
5.84
991
6.53
5000
843
4.22
888
4.86
930
5.53
969
6.21
1007
6.92
5313
862
4.55
906
5.21
947
5.90
986
6.61
1024
7.33
5625
881
4.91
924
5.59
965
6.30
1004
7.03
1041
7.78
5938
900
5.29
943
6.00
983
6.72
1022
7.47
1059
8.24
6250
920
5.70
962
6.43
1002
7.18
1040
7.95
1077
8.74
STD Static (498-676 rpm) 2.9 Max BHP
MID Static (644-808 rpm) 4.9 Max BHP
HIGH Static (782-963 rpm) 7.4 Max BHP
ULTRA HIGH Static (933-1113 rpm) 9.9 Max BHP
APPENDIX C — FAN PERFORMANCE