7
FAN CURVE CHARACTERISTICS (CONT.)
0.00
0.04
0.08
0.12
0.16
0.20
0.24
0.28
0.32
0.36
180
220
260
300
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
Upper Limit of ESP
(Rating ESP)
Lower Limit of ESP
(Rating ESP)
Upper Limit of ESP
(Min ESP)
Upper Limit of ESP (Max ESP)
Lower Limit of ESP (Max ESP)
Lower Limit of ESP
(ESP ESP)
M-Speed
L- Speed
Fig. 6 —Size 007A 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.)
0.08
H
299
0.07
260
0.08
221
0.09
0.16
H
299
0.14
260
0.16
221
0.18
0.24
H
299
0.22
260
0.24
221
0.27
0.32
H
299
0.29
260
0.32
221
0.34
LEGEND
ESP
—
External Static Pressure
SP
—
Static Pressure
Fig. 7 —Size 009A 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.)
0.00
H
391
0.00
340
0.00
289
0.01
0.04
H
391
0.00
340
0.04
289
0.07
0.08
H
391
0.04
340
0.08
289
0.11
0.12
H
391
0.09
340
0.12
289
0.15
0.16
H
391
0.14
340
0.16
289
0.18
0.20
H
391
0.18
340
0.20
289
0.22
0.24
H
391
0.20
340
0.24
289
0.27
0.28
H
391
0.24
340
0.28
289
0.31
0.32
H
391
0.30
340
0.32
289
0.33
LEGEND
ESP
—
External Static Pressure
SP
—
Static Pressure
0
0.04
0.08
0.12
0.16
0.2
0.24
0.28
0.32
0.36
150
200
250
300
350
400
450
External static
pressure(in.WG)
Air flow (CFM)
H-Speed
M-Speed
L -Speed
Lower limite of ESP (Rating ESP)
Lower limite of
ESP (Min ESP)
H-Speed
M-Speed
L -Speed
L -Speed
H-Speed
M-Speed
340
Fan Characteristics Curve