Fig. 62 — Outdoor-Air Damper Leakage
Fig. 63 — Return Air Temperature or Enthalpy Sensor
Fig. 64 — EconoMi$er IV W7212 Control
0
500
1000
1500
2000
2500
0 0.05 0.1 0.15 0.2 0.25 0.3
RETURN DUCT STATIC PRESSURE (in. wg)
RELIEF FLOW (CFM)
3-5 Ton
Horizontal Economizers
0
1000
2000
3000
4000
5000
6000
00.10.20.3 0.4
RETURN DUCT STATIC PRESSURE DROP (in. wg)
RETURN AIR FLOW (CFM)
3-5 Ton
Horizontal Economizers
0
500
1000
1500
2000
2500
0 0.05 0.1 0.15 0.2 0.25 0.3
RETURN DUCT STATIC PRESSURE (in. wg)
RELIEF FLOW (CFM)
3-5 Ton
Vertical Economizers
Vertical Economizers
0
1000
2000
3000
4000
5000
6000
RETURN AIR FLOW (CFM)
3-5 Ton
HORIZONTAL ECONOMIZER BAROMETRIC RELIEF FLOW
HORIZONTAL ECONOMIZER RETURN AIR PRESSURE DROP
VERTICAL ECONOMIZER BAROMETRIC RELIEF FLOW
VERTICAL ECONOMIZER RETURN AIR PRESSURE DROP
00.10.20.3 0.4
RETURN DUCT STATIC PRESSURE DROP (in. wg)
6 Ton
6 Ton6 Ton
6 Ton
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