37
HORIZONTAL ECOMOMIZER BAROMETRIC RELIEF
HORIZONTAL ECOMOMIZER DAMPER LEAKAGE
VERTICAL ECONOMIZER BAROMETRIC RELIEF
VERTICAL ECONOMIZER DAMPER LEAKAGE
0
500
1000
1500
0 0.05 0.1 0.15 0.2 0.25 0.3
Relief Flow (CFM)
Return Duct Static Pressure (in. wg)
Horizontal Economizer Barometric Relief Flow
0
5
10
15
20
25
30
00.10.20.3 0.4 0.5 0.6
Leakage Across Damper (CFM)
Static Pressure Delta (in. wg)
Horizontal Economizer Barometric Relief Flow
0
500
1000
1500
2000
0 0.05 0.1 0.15 0.2 0.25 0.3
Relief Flow (CFM)
Return Duct Static Pressure (in. wg)
Vertical Economizer Barometric Relief Flow
0
5
10
15
20
25
00.10.20.3 0.4 0.5 0.6
Leakage Across Damper (CFM)
Static Pressure Delta (in. wg)
Vertical Economizer Barometric Relief Flow
PRESSURE DROPS FOR GAS AND ELECTRIC HEATING UNITS
Performance data (cont)