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PERFORMANCE DATA (cont)
OUTDOOR SOUND POWER (TOTAL UNIT)
LEGEND
UNIT
551B
ARI RATING
(dB)
OCTAVE BANDS
63 125 250 500 1000 2000 4000 8000
036,048
76 55.9 66.0 64.0 66.2 68.4 64.5 61.7 57.3
060,072
80 59.1 68.9 68.7 71.9 74.0 68.9 65.7 59.0
090,102
82 62.2 69.3 71.5 74.7 76.2 72.9 68.7 61.5
120
84 64.6 71.1 73.3 76.9 77.6 73.7 70.6 63.7
150
86 63.7 69.9 72.5 78.2 81.1 77.3 73.3 66.8
ARI —
Air Conditioning and Refrigeration Institute
dB —
Sound Levels (decibels)
50
40
30
20
10
0
0
0.25
0.5
0.75 1
FLOW (CFM)
STATIC PRESSURE (in. wg)
3 TO 6 TON
7 1/2 TO 12 1/2 TON
0.25
0.20
0.15
0.10
0.05
0.00
1200
2000
2800
3600 4400
FLOW (CFM)
STATIC PRESSURE (in. wg)
3 TO 6 TON
7 1/2 TO 12 1/2 TON
0.35
0.30
Vertical EconoMi$er Outdoor-Air Leakage
Vertical EconoMi$er Return-Air Pressure Drop
3 TO 6 TON
7 1/2 TO 12 1/2 TON
80
60
40
20
0
0.00 0.10 0.20 0.30 0.40 0.50
STATIC PRESSURE (in. wg)
FLOW (CFM)
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0 1000 2000 3000 4000 5000
FLOW (CFM)
STATIC PRESSURE (in. wg)
3 TO 6 TON
7 1/2 TO 12 1/2 TON
Horizontal EconoMi$er Outdoor-Air Leakage
Horizontal EconoMi$er Return-Air Pressure Drop
0TFQ004-012
551B036-150