26
APPENDIX A ECONOMIZER PRESSURE DROP
SCFM
4500
5000
5500
6000
6500
7000
7500
8000
8500
9000
9500
10000
(In WG)
0.15
0.18
0.22
0.27
0.32
0.37
0.42
0.48
0.55
0.61
0.69
0.76
Airflow Pressure Drop of Downflow Economizer for 15 to 25 Ton Rooftop Units (100% Return Air)