20
Table 11 — 50RTP14 Blower Performance Data
LEGEND
NOTES:
1. A = Standard RPM/Standard Motor, B = Low RPM/Standard
Motor, C = High RPM/Standard Motor, D = Standard RPM/
Large Motor, E = High RPM/Large Motor
2. Unit shipped with standard drive package with drive sheave 2.5
turns open unless otherwise requested. Field adjustment may
be required for specified CFM.
3. ISO/AHRI rating point with standard drive package and drive
sheave open 3.0 turns at .30 ESP.
4. Performance data does not include drive losses and is based
on sea level conditions.
5. All airflow is rated at lowest voltage if unit is dual rated, i.e.,
rated at 208 volts for 208-230 volt units.
AIRFLOW
(cfm)
ESP
AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
4200
bhp
—
—
—
—
0.83
0.91
0.99
1.06
1.15
1.25
1.35
1.45
1.54
1.64
1.72
1.82
1.91
1.99
2.06
2.14
2.22
Sheave/Motor
—
—
—
—
B
B
B
A
A
A
A
A
A
A
A
C
C
C
C
C
C
rpm
—
—
—
—
575
612
644
676
708
736
764
792
816
840
860
884
908
928
944
964
984
Turns Open
—
—
—
—
5.5
4.0
3.0
6.0
5.0
4.5
3.5
2.5
2.0
1.5
1.0
5.5
5.0
4.5
4.0
3.5
3.0
4400
bhp
—
—
—
—
0.89
0.98
1.08
1.17
1.25
1.34
1.43
1.52
1.63
1.74
1.85
1.94
2.04
2.12
2.20
2.28
2.36
Sheave/Motor
—
—
—
—
B
B
B
A
A
A
A
A
A
A
C
C
C
C
C
C
C
rpm
—
—
—
—
587
620
656
688
716
744
772
800
824
848
872
892
916
936
956
976
996
Turns Open
—
—
—
—
5.0
4.0
2.5
5.5
4.5
4.0
3.0
2.5
2.0
1.0
5.5
5.0
4.5
4.0
4.0
3.5
3.0
4600
bhp
—
—
—
0.86
0.95
1.06
1.16
1.28
1.36
1.43
1.50
1.60
1.73
1.85
1.98
2.10
2.18
2.26
2.34
2.42
2.50
Sheave/Motor
—
—
—
B
B
B
B
A
A
A
A
A
A
A
C
C
C
C
C
C
C
rpm
—
—
—
558
596
632
664
700
728
752
780
808
832
856
880
904
924
944
964
984
1004
Turns Open
—
—
—
6.0
4.5
3.5
2.5
5.0
4.5
4.0
3.0
2.0
1.5
1.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
4800
bhp
—
—
—
0.93
1.01
1.13
1.24
1.34
1.42
1.49
1.57
1.68
1.81
1.93
2.06
2.18
2.27
2.37
2.47
2.56
2.66
Sheave/Motor
—
—
—
B
B
B
A
A
A
A
A
A
A
C
C
C
C
C
C
C
C
rpm
—
—
—
571
604
640
676
708
736
760
788
816
840
864
888
912
932
952
972
992
1012
Turns Open
—
—
—
5.5
4.5
3.0
6.0
5.0
4.0
3.5
3.0
2.0
1.5
6.0
5.0
4.5
4.5
4.0
3.5
3.0
2.5
5000
bhp
—
—
—
1.03
1.13
1.25
1.36
1.45
1.54
1.62
1.71
1.83
1.99
2.12
2.26
2.35
2.46
2.54
2.63
2.72
2.83
Sheave/Motor
—
—
—
B
B
B
A
A
A
A
A
A
A
C
C
C
C
C
C
C
C
rpm
—
—
—
583
616
652
688
716
744
768
796
820
848
872
896
916
940
960
980
1000 1020
Turns Open
—
—
—
5.0
4.0
2.5
5.5
4.5
4.0
3.5
2.5
2.0
1.0
5.5
5.0
4.5
4.0
3.5
3.0
3.0
2.5
5200
bhp
—
—
1.02
1.11
1.22
1.34
1.47
1.58
1.69
1.78
1.90
2.00
2.13
2.23
2.34
2.45
2.59
2.70
2.84
3.00
3.03
Sheave/Motor
—
—
B
B
B
B
A
A
A
A
A
A
A
C
C
C
C
C
C
E
E
rpm
—
—
558
596
628
660
696
724
752
776
804
828
856
880
904
924
948
968
992
1012 1028
Turns Open
—
—
6.0
4.5
3.5
2.5
5.5
4.5
4.0
3.0
2.5
1.5
1.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
5400
bhp
—
—
1.12
1.21
1.33
1.43
1.54
1.65
1.76
1.86
1.99
2.12
2.26
2.41
2.54
2.65
2.77
2.88
3.00
3.10
3.19
Sheave/Motor
—
—
B
B
B
A
A
A
A
A
A
A
A
C
C
C
C
C
E
E
E
rpm
—
—
571
604
640
672
704
732
760
784
812
836
860
888
912
932
956
976
1000 1020 1036
Turns Open
—
—
5.5
4.5
3.0
6.0
5.0
4.5
3.5
3.0
2.0
1.5
1.0
5.0
4.5
4.5
4.0
3.5
3.0
2.5
2.0
5600
bhp
—
—
1.23
1.33
1.43
1.54
1.66
1.79
1.91
2.04
2.17
2.27
2.38
2.50
2.63
2.79
3.00
3.09
3.24
3.32
3.41
Sheave/Motor
—
—
B
B
B
A
A
A
A
A
A
A
C
C
C
C
E
E
E
E
E
rpm
—
—
583
616
648
680
712
740
764
792
820
844
868
896
916
940
964
984
1008 1024 1044
Turns Open
—
—
5.0
4.0
3.0
5.5
5.0
4.0
3.5
2.5
2.0
1.5
6.0
5.0
4.5
4.0
3.5
3.0
2.5
2.5
2.0
5800
bhp
—
1.22
1.31
1.42
1.54
1.65
1.77
1.89
2.01
2.12
2.28
2.41
2.55
2.71
2.83
3.00
3.14
3.27
3.40
3.47
3.57
Sheave/Motor
—
B
B
B
B
A
A
A
A
A
A
A
C
C
C
E
E
E
E
E
E
rpm
—
563
596
628
660
692
720
748
776
800
828
852
876
904
924
948
972
992
1016 1032 1052
Turns Open
—
5.5
4.5
3.5
2.5
5.5
4.5
4.0
3.0
2.5
1.5
1.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
6000
bhp
—
1.33
1.43
1.53
1.63
1.74
1.90
2.06
2.21
2.33
2.46
2.56
2.67
2.81
3.00
3.15
3.33
3.48
3.57
3.66
3.74
Sheave/Motor
—
B
B
B
A
A
A
A
A
A
A
A
C
E
E
E
E
E
E
E
E
rpm
—
575
608
640
672
704
732
760
788
812
840
864
888
912
932
956
980
1000 1020 1040 1060
Turns Open
—
5.5
4.0
3.0
6.0
5.0
4.5
3.5
3.0
2.0
1.5
1.0
5.0
4.5
4.5
4.0
3.5
3.0
2.5
2.0
1.5
6200
bhp
1.35
1.44
1.56
1.69
1.82
1.95
2.07
2.18
2.30
2.45
2.59
2.72
2.86
3.05
3.14
3.29
3.44
3.56
3.68
3.79
3.90
Sheave/Motor
B
B
B
B
A
A
A
A
A
A
A
C
C
E
E
E
E
E
E
E
E
rpm
558
587
620
652
684
716
744
768
796
824
848
872
896
920
940
964
988
1008 1028 1048 1068
Turns Open
6.0
5.0
4.0
2.5
5.5
4.5
4.0
3.5
2.5
2.0
1.5
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
2.0
1.5
bhp —
Brake Horsepower
ESP —
External Static Pressure
