26
SCFM
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
in. WG
0.02
0.04
0.05
0.07
0.09
0.12
0.14
0.17
0.21
0.24
0.28
Airflow Pressure Drop of Downflow Economizer for 3 to 6 Ton Rooftop Units (100% Return Air)
ECONOMIZER-AIRSIDE PRESSURE DROP
ATTENTION INSTALLING PERSONNEL
Use only the heater kit specified for each model as dictated by the table above.
UNIT
HEATER KIT
MODEL NUMBER
MINIMUM CFM
EHK*-10
1250
EHK*-15
1250
EHK*-10
1300
EHK*-15
1400
EHK*-18
1400
EHK*-10
1700
EHK*-15
1700
EHK*-20
1800
MINIMUM AIR FLOW FOR ELECTRIC HEAT
3 TON
4 TON
5 TON