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46
ECONOMIZER, BAROMETRI C RELI EF 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
7.5-8.5 Ton
Horizontal Economizers
C09028
Fig. 9 -- Barometric Relief Flow Capacity
0
5
10
15
20
25
30
0.00 0.10 0.20 0.30 0.40 0.50
STATIC PRESSURE DELTA (in. wg)
LEAKAGE ACROSS DAMPER (CFM)
3 - 6 Ton
7.5 - 8.5 Ton
Horizontal Economizers
C09029
Fig. 10 -- Outdoor Air Damper Leakage
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
7.5 - 8.5 Ton
Horizontal Economizers
C09030
Fig. 11 -- Return Air Pressure Drop
0
1000
2000
3000
4000
5000
0 0.1 0.2 0.3 0.4 0.5
2-6
7.5-8.5 Ton
RETURN DUCT STATIC PRESSURE (in. wg)
EXHAUST
AIRFLOW (cfm)
Vertical Power Exhaust
Ton
C08012
Fig. 12 -- 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
7.5 - 8.5 Ton
Vertical Economizers
C09031
Fig. 13 -- Barometric Relief Flow Capacity
0
5
10
15
20
25
30
0.00 0.10 0.20 0.30 0.40 0.50
STATIC PRESSURE DELTA (in. wg)
LEAKAGE ACROSS DAMPER (CFM)
3 - 6 Ton
7.5 - 8.5 Ton
Vertical Economizers
C09032
Fig. 14 -- Outdoor Air Damper Leakage
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
7.5 - 8.5 Ton
Vertical Economizers
C09033
Fig. 15 -- Return Air Pressure Dro p
0
1000
2000
3000
4000
5000
0 0.1 0.2 0.3 0.4 0.5
2-6 Ton
7.5-12.5 Ton
RETURN DUCT STATIC PRESSURE (in. wg)
EXHAUST
AIRFLOW (cfm)
C09034
Fig. 16 -- Power Exhaust Performance
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