8
APPLICATION NC* LEVELS (RADIATED SOUND) — ROUND 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
33ZCDR06ZC-01
160
0.02 <20
0.52 <20
1.00 25
200
0.04 <20
0.50 22
1.00 24
240
0.06 <20
0.50 24
1.00 28
360
0.10 28
0.50 32
1.00 35
33ZCDR08ZC-01
280
0.03 <20
0.50 <20
1.00 22
350
0.04 <20
0.50 22
1.00 22
420
0.06 28
0.50 25
1.00 27
630
0.10 28
0.50 28
1.00 30
33ZCDR10ZC-01
440
0.01 22
0.50 25
1.00 27
514
0.02 22
0.50 28
1.00 29
584
0.03 25
0.50 27
1.00 32
659
0.04 30
0.50 32
1.00 34
990
0.09 35
0.50 35
1.00 37
33ZCDR12ZC-01
630
0.01 22
0.50 35
1.00 38
700
0.03 22
0.50 37
1.00 38
770
0.02 22
0.50 38
1.00 39
860
0.04 27
0.50 39
1.00 40
950
0.05 32
0.50 40
1.00 40
1425
0.11 40
0.50 44
1.00 45
Performance data
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