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