5
FAN CURVE CHARACTERISTICS
Fig. 3 —Size 009
LEGEND
ESP - External Static Pressure
SP - Static Pressure
Fig. 4 —Size 012
LEGEND
ESP - External Static Pressure
SP - Static Pressure
ESP
Fan
Speed
Range of Available Airflow Rate in H-Speed
Max Point
Rating Point
Min Point
Max
CFM
SP
(in.)
Mid
CFM
SP
(in.)
Min
CFM
SP
(in.)
0.20
H
676
0.16
588
0.20
500
0.23
0.24
0.20
0.24
0.27
0.28
0.24
0.28
0.31
0.32
0.28
0.32
0.35
0.36
0.32
0.36
0.39
0.40
0.36
0.40
0.43
0.44
0.39
0.44
0.48
0.48
0.43
0.48
0.52
0.52
0.47
0.52
0.56
0.56
0.50
0.56
0.60
0.60
0.54
0.60
0.64
0.64
0.57
0.64
0.68
0.68
0.61
0.68
0.72
0.72
0.65
0.72
0.76
0.76
0.69
0.76
0.80
0.80
0.73
0.80
0.84
ESP
Fan
Speed
Range of Available Airflow Rate in H-Speed
Max Point
Rating Point
Min Point
Max
CFM
SP
(in.)
Mid
CFM
SP
(in.)
Min
CFM
SP
(in.)
0.20
H
744
0.15
647
0.20
550
0.22
0.24
0.19
0.24
0.26
0.28
0.23
0.28
0.30
0.32
0.27
0.32
0.34
0.36
0.31
0.36
0.38
0.40
0.34
0.40
0.43
0.44
0.37
0.44
0.48
0.48
0.41
0.48
0.52
0.52
0.45
0.52
0.56
0.56
0.49
0.56
0.60
0.60
0.53
0.60
0.64
0.64
0.57
0.64
0.68
0.68
0.60
0.68
0.73
0.72
0.64
0.72
0.77
0.76
0.68
0.76
0.81
0.80
0.72
0.80
0.85
