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ECONOMIZER, BAROMETRIC RELIEF AND PE PERFORMANCE
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 -6 Ton
7½ - 12½ Ton
Horizontal Economizers
C08070
Fig. 12 -- Barometric Relief Flow Capacity
0
1000
2000
3000
4000
5000
6000
0 0.1 0.2 0.3 0.4
RETURN DUCT STATIC PRESSURE DROP (in. wg)
RETURN AIR FLOW (CFM)
3 - 6 TON
7 1/2 - 12 1/2 Ton
Horizontal Economizers
C08072
Fig. 13 -- Return Air Pressure Drop
0
500
1000
1500
2000
2500
0 0.1 0.2 0.3 0.4 0.5
EXHAUST AIRFLOW
(cfm)
RETURN DUCT STATIC PRESSURE (in. wg)
Horizontal Power Exhaust
C08012
Fig. 14 -- Horizontal Power Exhaust Performance
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 -6 Ton
7½ - 12½ Ton
Vertical Economizers
C08073
Fig. 15 -- Barometric Relief Flow Capacity
0
1000
2000
3000
4000
5000
6000
0 0.1 0.2 0.3 0.4
RETURN DUCT STATIC PRESSURE DROP (in. wg)
RETURN AIR FLOW (CFM)
3 - 6 TON
7 1/2 - 12 1/2 Ton
Vertical Economizers
C08075
Fig. 16 -- Return Air Pressure Drop
C08013
0
1000
2000
3000
4000
5000
0 0.1 0.2 0.3 0.4 0.5
RETURN DUCT STATIC PRESSURE (in. wg)
EXHAUST AIRFLOW
(cfm)
Vertical Power Exhaust
2 - 6 Ton
7.5 - 12.5 Ton
Fig. 17 -- Power Exhaust Performance
580J