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APPENDIX C —FAN CURVES
The Vertical Air Handling Unit is equipped with a constant cfm motor that automatically adjusts the fan speed if the actual cfm is
/- 10% of the setpoint cfm.
Figures A-G show fan characteristics at high-speed, medium-speed, and low-speed.
External static pressure on the vertical air handling unit cannot exceed 0.8 in. wg.
Fig. A —40VMV012A Fan Curves
Fig. C —40VMV024A Fan Curves
Fig. D —40VMV030A Fan Curves
0.00
0.20
0.40
0.60
0.80
1.00
EXTERNAL STATIC PRESSURE (in. wg)
H-speed
500
AIRFLOW (cfm)
M-speed
L-speed
700
300
600
400
Upper Limit of ESP
0.00
0.20
0.40
0.60
0.80
1.00
EXTERNAL STATIC PRESSURE (in. wg)
H-speed
M-speed
500
AIRFLOW (cfm)
L-speed
700
300 400
600
Upper Limit of ESP
0.00
0.20
0.40
0.60
0.80
1.00
EXTERNAL STATIC PRESSURE (in. wg)
H-speed
M-speed
500
AIRFLOW (cfm)
L-speed
700
300 400
600
Upper Limit of ESP
0.00
0.20
0.40
0.60
0.80
1.00
EXTERNAL STATIC PRESSURE (in. wg)
H-speed
M-speed
500
AIRFLOW (cfm)
L-speed
700
300 400
600
Upper Limit of ESP
Fig. B —40VMV018A Fan Curves
