Troubleshooting Guide

5.�
BLOWER DATA
5.
Blower Data
8
Airflow performance data is based on cooling performance with a coil and no filter in place. Check the
performance table for appropriate unit size selection. External static pressure should stay within the
minimum and maximum limits shown in the table below in order to ensure proper cooling, heating ,
and electric heating operation.
[!] Required 350-450CFM/ton range.
[!] CFM means Standard Cubic Foot per Hour.
[!] Airflow based upon Air Handler Unit operates at 230V
with no electric heater kit and no filter. Airflow at 208V is
approximately the same as 230V.
[!] When there is an electric heater, please set the fan
speed based on the air volume that the electric
heater needs (not less than 350CFM/TON).
Air Flow Table
Air Flow Table
Air
Handler
Model
Motor Speed
External Static Pressure
in.H2O[KPa]
0[0] 0.1[0.02] 0.18[0.045] 0.3[0.07] 0.4[0.1] 0.5[0.12] 0.6[0.15] 0.7[0.17] 0.8[0.20]
24K
Tap(1)
-Default
Setting
CFM 815 792 752 709 676 653 615 566 512
Watts 94 102 110 123 130 139 148 157 167
Tap(2)
CFM 862 828 792 735 705 673 661 618 561
Watts 106 114 125 137 145 154 161 170 177
Tap(3)
CFM 975 940 906 859 853 803 769 735 681
Watts 148 155 165 178 185 193 203 213 219
Tap(4)
CFM 1055 1024 995 948 922 895 864 825 779
Watts 197 204 214 228 234 241 251 258 267
Air
Handler
Model
Motor Speed
External
Static Pressure
in.H2O[KPa]
0[0] 0.1[0.02] 0.3[0.07] 0.4[0.1] 0.5[0.12]
0.6[0.15] 0.7[0.17] 0.8[0.20]
36K
Tap(1)
-Default
Setting
CFM
1264 1216 1172
1135 1096 1028 954 890 839
Watts
215 222 233 238 244 254 261 266 274
Tap(2)
CFM
1350 1314 1269 1206 1116 1082 1050 990 930
Watts
257 264 274 282 292 297 302 309 316
Tap(3)
CFM
1460 1409 1368 1323 1266 1192 1122 1060 999
Watts
280 288 295 304 313 323 333 340 348
Tap(4)
CFM
1526 1479 1441 1399 1350 1292 1221 1148 1088
Watts
342 348 355 363 371 381 394 401 406
0.18[0.045]