
The air distribution system has the greatest effect on airflow. The duct system is totally controlled by the contractor. For this reason, the contractor
should use only industry-recognized procedures.
Duct design and construction should be carefully done. System performance can be lowered dramatically through bad planning or workmanship.
Air supply diffusers must be selected and located carefully. They must be sized and positioned to deliver air along the perimeter of the space. If
they are too small for their intended airflow, they become noisy. If they are not located properly, they cause drafts. Air grilles must be properly sized
to carry air back to the blower.If they are too small, they also cause noise.
The installers should balance the air distribution system to ensure proper quiet airflow to all rooms in the home. This ensures a comfortable living
space.
--- Shaded boxes represent airflow outside the required 300-450 cfm/ton.
NOTES:
9
1. Airflow based upon dry coil at 230V with no electric heat, no filter.
2. Airflow is equivalent for front or bottom return configurations.
3. SCFM is nearly the same with cooling performance airflow, the gap is in the 1 to 2%.
0[0]
0.1[.02] 0.2[.05] 0.24[.06] 0.3[.07] 0.4[.10] 0.5[.12] 0.6[.15] 0.7[.17] 0.8[.20]
CFM
997
948
903
891
861
809
760
-
-
-
RPM
755
789
817
828
846
870
903
-
-
-
Watts
305
295
287
283
278
271
263
-
-
-
Amps
1.53
1.51
1.49
1.48
1.47
1.46
1.44
-
-
-
CFM
1187
1125
1076
1055
1021
974
912
-
-
-
RPM
875
899
916
924
935
952
967
-
-
-
Watts
339
331
324
321
317
309
302
-
-
-
Amps
1.67
1.66
1.64
1.63
1.62
1.61
1.59
-
-
-
CFM
1306
1249
1166
1132
1069
1008
937
860
759
RPM
956
968
982
987
994
1007
1015
1027
1041
1054
Watts
427
417
409
406
400
391
384
375
363
351
Amps
2.20
2.18
2.16
2.15
2.15
2.13
2.11
2.09
2.07
2.05
CFM
1106
1056
1007
990
960
918
857
-
-
-
RPM
818
843
868
878
893
916
941
-
-
-
Watts
371
361
349
346
338
328
316
-
-
-
Amps
1.62
1.58
1.53
1.52
1.49
1.44
1.4
-
-
-
CFM
1269
1213
1153
1131
1097
1069
973
-
-
-
RPM
920
933
947
956
965
982
997
-
-
-
Watts
410
401
391
385
380
368
357
-
-
-
Amps
1.79
1.74
1.70
1.67
1.65
1.60
1.55
-
-
-
CFM
1375
1320
1267
1248
1204
1142
1082
1011
919
801
RPM
986
996
1007
1011
1018
1030
1040
1051
1063
1079
Watts
461
450
440
436
427
416
402
388
376
358
Amps
2.01
1.96
1.92
1.90
1.87
1.81
1.76
1.70
1.65
1.57
External Static Pressure-Inches W.C.[kPa]
CFM(Watts)
36
Low
Middle
High
Motor
Speed
Low
Middle
30
High
Model
Number
1195
Содержание TMM4A0A18S21SA
Страница 7: ...7 Fig 4 1...
Страница 12: ...100 A4...