10
APPLICATION NC* LEVELS (RADIATED SOUND) — RECTANGULAR ZONE DAMPERS
*Noise Criteria.
NOTE: The NC values are based on ARI (Air Conditioning and Refrigeration Institute) Standard 885-90 application assumptions.
DAMPER CFM
STATIC PRESSURE
(in. wg)
NC LEVEL
33ZCD1008ZC-01
410
0.01 <20
0.50 30
1.00 45
509
0.03 <20
0.50 30
1.00 40
610
0.07 23
0.50 31
1.00 40
914
0.16 35
0.50 37
1.00 45
33ZCD1408ZC-01
561
0.02 <20
0.50 36
1.00 47
625
0.02 22
0.50 37
1.00 45
725
0.03 25
0.50 38
1.00 45
825
0.05 32
0.50 40
1.00 46
1237
0.11 40
0.50 45
1.00 54
33ZCD1808ZC-01
725
0.01 22
0.50 38
1.00 48
775
0.01 22
0.50 38
1.00 48
874
0.02 28
0.50 40
1.00 48
974
0.02 30
0.50 42
1.00 48
1075
0.03 33
0.50 44
1.00 50
1611
0.06 40
0.50 50
1.00 60
33ZCD2408ZC-01
925
0.01 26
0.50 38
1.00 48
974
0.01 27
0.50 38
1.00 50
1075
0.01 32
0.50 40
1.00 50
1175
0.02 35
0.50 41
1.00 50
1275
0.02 37
0.50 43
1.00 50
1375
0.03 38
0.50 44
1.00 50
2062
0.06 47
0.50 50
1.00 55
Performance data (cont)
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