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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 -5 Ton
- Ton
Horizontal Economizers
½
8
6
C10233
Fig. 9 -- 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 - TON
- 1/2 Ton
Horizontal Economizers
8
5
6
C10235
Fig. 10 -- Return Air Pressure Drop
0
500
1000
1500
2000
2500
0 0.1 0.2 0.3 0.4 0.5
STATIC PRESSURE (in. wg)
FLOW (cfm)
3-8.5 Ton
C10239
Fig. 11 -- 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 - Ton
- ½ Ton
Vertical Economizers
8
5
6
C10236
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 - TON
- 1/2 Ton
Vertical Economizers
8
5
6
C10238
Fig. 13 -- Return Air Pressure Drop
0
1000
2000
3000
4000
5000
0 0.1 0.2 0.3 0.4 0.5
STATIC PRESSURE (in. wg)
FLOW (cfm)
3 - 5 Ton
6 - 8 1/2 Ton
C10240
Fig. 14 -- Vertical Power Exhaust Performance
581J