6
FAN CURVE CHARACTERISTICS
Fig. 4 —Size 012A Fan Curves
Fig. 5 —Size 015A Fan Curves
ESP
FAN
SPEED
RANGE OF AVAILABLE AIRFLOW RATE IN
H-SPEED
Max Point
Mid Point
Min Point
Max
CFM
SP
(in.)
Mid
CFM
SP
(in.)
Min
CFM
SP
(in.)
0.10
H
518
0.06
430
0.10
383
0.12
0.20
H
518
0.17
430
0.19
383
0.21
0.30
H
518
0.28
430
0.31
383
0.33
0.40
H
518
0.38
430
0.39
383
0.42
0.50
H
518
0.49
430
0.51
383
0.54
0.60
H
518
0.58
430
0.61
383
0.64
LEGEND
ESP
—
External Static Pressure
SP
—
Static Pressure
0.00
0.04
0.08
0.12
0.16
0.20
0.24
0.28
0.32
0.36
0.40
0.44
0.48
0.52
0.56
0.60
0.64
0.68
250
350
450
550
External static
pressure
(in WG)
Fan Characteristics Curve
Air Flow (CFM)
H-Speed
M- Speed
L- Speed
H-Speed
M - Speed
L-Speed
H - Speed
M-Sp
eed
L-Speed
430
Upper Limit of ESP (Max ESP)
Lower Limit of ESP (Max ESP)
Upper Limit of ESP (Rating ESP)
Upper Limit of ESP (Min ESP)
Lower Limit of ESP
(Rating ESP)
Lower Limit of ESP
(Min ESP)
ESP
FAN
SPEED
RANGE OF AVAILABLE AIRFLOW RATE IN
H-SPEED
Max Point
Mid Point
Min Point
Max
CFM
SP
(in.)
Mid
CFM
SP
(in.)
Min
CFM
SP
(in.)
0.10
H
644
0.07
535
0.10
476
0.13
0.20
H
644
0.16
535
0.18
476
0.21
0.30
H
644
0.28
535
0.29
476
0.32
0.40
H
644
0.36
535
0.40
476
0.42
0.50
H
644
0.46
535
0.48
476
0.51
0.60
H
644
0.59
535
0.61
476
0.63
LEGEND
ESP
—
External Static Pressure
SP
—
Static Pressure
0.00
0.04
0.08
0.12
0.16
0.20
0.24
0.28
0.32
0.36
0.40
0.44
0.48
0.52
0.56
0.60
0.64
0.68
300
400
500
600
700
External static
pressure
(in WG)
Fan Characteristics Curve
Air Flow (CFM)
H-Speed
M-Speed
L-Speed
535
M-S
peed
M-Speed
L-Speed
L-Speed
H-Speed
H-Sp
eed
Upper Limit of ESP (Max ESP)
Lower Limit of ESP (Max ESP)
Upper Limit of ESP (Rating ESP)
Upper Limit of ESP (Min ESP)
Lower Limit of ESP
(Rating ESP)
Lower Limit of ESP
(Min ESP)