Product data

APPLICATION NC* LEVELS (RADIATED SOUND) — RECTANGULAR ZONE DAMPERS
DAMPER CFM
STATIC PRESSURE
(in. wg)
NC LEVEL
RD0810
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
RD0814
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
RD0818
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
RD0824
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
*Noise Criteria.
NOTE: The NC values are based on ARI (Air Conditioning and Refrigeration Institute) Standard 885-90
application assumptions.
11