11
NOTES: Airflow based upon cooling performance at 230V with no electric heat and no filter.Airflow at 208V is approximately the same as 230V
because the mult-tap ECM motor is a constant torque motor. The torque doesn’t drop off at the speeds in which the motor operates.
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.
Heat pump systems require a specified airflow for electric heat operating. Each ton of cooling requires between 350 and 450 cubic feet of air per
minute (CFM), or 400 CFM nominally.
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 treated 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. Return 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.
An air velocity meter or airflow hood can be used to balance and verify branch and system airflow (CFM).
--- Shaded boxes represent airflow outside the required 300-450 cfm/ton.
0[0]
0.1[.025] 0.2[.050] 0.3[.075] 0.4[0.100] 0.5[0.125] 0.6[0.150] 0.7[0.175] 0.8[0.200]
SCFM
1344
1284
1226
1151
1076
946
904
893
869
Power/W
143
151
159
168
177
191
197
195
194
Current/A
1.23
1.26
1.33
1.41
1.50
1.61
1.63
1.61
1.62
SCFM
1531
1477
1418
1366
1299
1239
1138
1064
1001
Power/W
200
211
222
231
239
250
266
277
291
Current/A
1.73
1.74
1.81
1.89
2.02
2.14
2.22
2.31
2.38
SCFM
1647
1592
1538
1490
1436
1378
1315
1215
1140
Power/W
244
254
263
273
283
300
305
325
336
Current/A
2.03
2.11
2.14
2.19
2.31
2.38
2.53
2.64
2.72
SCFM
1875
1822
1774
1729
1677
1629
1581
1533
1473
Power/W
340
353
365
375
388
399
412
423
437
Current/A
2.73
2.79
2.86
3.02
3.12
3.21
3.29
2.38
3.51
SCFM
2021
1967
1924
1879
1828
1785
1742
1694
1641
Power/W
409
416
429
447
461
471
487
500
513
Current/A
3.21
3.29
3.38
3.52
3.61
3.73
3.76
3.86
4.04
SCFM
1344
1284
1226
1151
1076
946
904
893
869
Power/W
143
151
159
168
177
191
197
195
194
Current/A
1.23
1.26
1.33
1.41
1.50
1.61
1.63
1.61
1.62
SCFM
1531
1477
1418
1366
1299
1239
1138
1064
1001
Power/W
200
211
222
231
239
250
266
277
291
Current/A
1.73
1.74
1.81
1.89
2.02
2.14
2.22
2.31
2.38
SCFM
1647
1592
1538
1490
1436
1378
1315
1215
1140
Power/W
244
254
263
273
283
300
305
325
336
Current/A
2.03
2.11
2.14
2.19
2.31
2.38
2.53
2.64
2.72
SCFM
1875
1822
1774
1729
1677
1629
1581
1533
1473
Power/W
340
353
365
375
388
399
412
423
437
Current/A
2.73
2.79
2.86
3.02
3.12
3.21
3.29
2.38
3.51
SCFM
2021
1967
1924
1879
1828
1785
1742
1694
1641
Power/W
409
416
429
447
461
471
487
500
513
Current/A
3.21
3.29
3.38
3.52
3.61
3.73
3.76
3.86
4.04
CFM
1344
1284
1226
1151
1076
946
904
893
869
Watts
143
151
159
168
177
191
197
195
194
Current/A
1.23
1.26
1.33
1.41
1.50
1.61
1.63
1.61
1.62
CFM
1531
1477
1418
1366
1299
1239
1138
1064
1001
Watts
200
211
222
231
239
250
266
277
291
Current/A
1.73
1.74
1.81
1.89
2.02
2.14
2.22
2.31
2.38
CFM
1647
1592
1538
1490
1436
1378
1315
1215
1140
Watts
244
254
263
273
283
300
305
325
336
Current/A
2.03
2.11
2.14
2.19
2.31
2.38
2.53
2.64
2.72
CFM
1875
1822
1774
1729
1677
1629
1581
1533
1473
Watts
340
353
365
375
388
399
412
423
437
Current/A
2.73
2.79
2.86
3.0
3.12
3.21
3.29
2.38
3.51
CFM
2021
1967
1924
1879
1828
1785
1742
1694
1641
Watts
409
416
429
447
461
471
487
500
513
Current/A
3.21
3.29
3.38
3.52
3.61
3.73
3.76
3.86
4.04
5
5
Outdoor Unit
Size(Tons)
60
1
2
3
4
(Factory Default)
60
1
2
3
(Recommended)
4
(Factory Default)
5
4
5
3.5
Model
Motor Speed
CFM Wet Coil without filter and Electric Heat
External Static Pressure-Inches W.C.[kPa]
60
1
2
3
(Recommended)
4
(Factory Default)
CFM
1348
1280
1227
1180
1130
1042
933
871
825
Watts
157
165
176
187
196
206
225
233
245
Current/A
1.34
1.40
1.49
1.58
1.64
1.73
1.88
1.94
2.03
CFM
1491
1439
1380
1334
1285
1246
1180
1047
988
Watts
205
217
226
238
250
259
269
292
300
Current/A
1.71
1.81
1.88
1.97
2.06
2.14
2.21
2.39
2.45
CFM
1677
1633
1586
1543
1499
1449
1409
1370
1281
Watts
281
297
311
325
338
346
358
370
386
Current/A
2.30
2.41
2.52
2.63
2.73
2.79
2.88
2.98
3.09
CFM
1881
1843
1800
1754
1708
1666
1626
1590
1558
Watts
391
407
423
438
449
462
474
487
498
Current/A
3.12
3.25
3.36
3.47
3.56
3.66
3.75
2.84
3.93
CFM
2029
1988
1947
1900
1858
1815
1771
1716
1671
Watts
426
482
498
514
528
541
553
565
572
Current/A
3.67
3.80
3.92
4.03
4.13
4.24
4.33
4.41
4.47
5
5
60
1
2
3
4
(Factory Default)
CFM
Watts
Current/A
CFM
Watts
Current/A
1
2
(J4AH6E60
A1C00AA)
