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PERFORMANCE DATA (cont)
OUTDOOR SOUND POWER (TOTAL UNIT)
LEGEND
NOTE: Indoor sound power is available in Bryant’s Electronic Catalog Program (ECAT) for specific operating
parameters.
FAN RPM AT MOTOR PULLEY SETTINGS* — 581A210-300
*Approximate fan rpm shown.
UNIT
581A
ARI
RATING
(decibels)
A-WEIGHTED
(db)
OCTAVE BANDS
63 125 250 500 1000 2000 4000 8000
155,180 88 87.6 90.8 88.7 86.4 84.3 83.5 78.4 75.6 66.8
210, 240 82 81.7 90.2 84.8 80.7 79.0 77.6 71.4 66.7 60.7
300 85 84.9 90.0 86.3 83.6 82.9 80.3 74.9 71.4 66.5
ARI — Air Conditioning and Refrigeration Institute
581A DRIVE
MOTOR PULLEY TURNS OPEN
0
1
/
2
11
1
/
2
22
1
/
2
33
1
/
2
44
1
/
2
55
1
/
2
6
210
(208/230 and
460 volt)
Low Range Vertical 647 667 687 707 727 747 767 786 806 826 846 866 886
High Range Vertical 897 917 937 958 978 998 1018 1038 1058 1079 1099 1119 1139
Low Range Horizontal 896 924 951 979 1006 1034 1062 1089 1117 1144 1172 1199 1227
High Range Horizontal 1113 1138 1163 1188 1213 1238 1264 1289 1314 1339 1364 1389 1414
210
(575 volt)
Low Range Vertical 810 832 854 876 897 919 941 963 985 1007 1028 1050 1072
High Range Vertical 873 893 912 932 951 971 991 1010 1030 1049 1069 1088 1108
Low Range Horizontal 863 886 909 933 956 979 1002 1025 1048 1072 1095 1118 1141
High Range Horizontal 1042 1062 1083 1103 1123 1143 1164 1184 1204 1224 1245 1265 1285
240
(208/230 and
460 volt)
Low Range Vertical 949 970 992 1013 1035 1056 1078 1099 1120 1142 1163 1185 1206
High Range Vertical 941 961 980 1000 1019 1039 1059 1078 1098 1117 1137 1156 1176
Low Range Horizontal 896 924 951 979 1006 1034 1062 1089 1117 1144 1172 1199 1227
High Range Horizontal 1113 1138 1163 1188 1213 1238 1264 1289 1314 1339 1364 1389 1414
240
(575 volt)
Low Range Vertical 949 970 992 1013 1035 1056 1078 1099 1120 1142 1163 1185 1206
High Range Vertical 941 961 980 1000 1019 1039 1059 1078 1098 1117 1137 1156 1176
Low Range Horizontal 873 893 912 932 951 971 991 1010 1030 1049 1069 1088 1108
High Range Horizontal 1113 1138 1163 1188 1213 1238 1264 1289 1314 1339 1364 1389 1414
300
(all voltages)
Low Range Vertical 805 822 839 856 872 889 906 923 940 957 973 990 1007
High Range Vertical 941 961 980 1000 1019 1039 1059 1078 1098 1117 1137 1156 1176
Low Range Horizontal 805 822 839 856 872 889 906 923 940 957 973 990 1007
High Range Horizontal 941 961 980 1000 1019 1039 1059 1078 1098 1117 1137 1156 1176
581A155-300