11
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]
CFM
1272 1240 1202 1157 1114 1066 912 850.3 792
Watts
460 450 440 431 424 410 374 364 350
Current/A
1.99 1.95 1.90 1.86 1.83 1.77 1.62 1.57 1.51
CFM
1570 1534 1490 1442 1387 1335 1278 1208 977
Watts
515 504 492 479 470 458 445 429 384
Current/A
2.26 2.20 2.15 2.09 2.04 1.99 1.93 1.86 1.66
CFM
1780 1746 1704 1647 1570 1537 1405 1220 1166
Power/W
641 626 610 594 577 561 536 501 469
Current/A
2.79 2.72 2.65 2.58 2.5 2.43 2.36 2.28 2.03
CFM
13
36 13
10 1282 1234 1182 1140 1049 925 833
Watts
492 483 474 463 452 443 422 393 374
Current/A
2.24 2.22 2.17 2.13 2.10 1.93 2.03 1.90 1.87
CFM
1654 1610 1569 1510 1461 1394 1350 1265 1034
Watts
550 537 526 512 503 489 475 458 416
Current/A
2.40 2.38 2.35 2.32 2.30 2.18 2.16 2.08 2.04
CFM
1918 1875 1817 1771 1715 1651 1584 1511 1395
Power/W
717 703 686 670 652 635 617 600 570
Current/A
3.20 3.18 3.14 3.10 3.04 3.00 2.90 2.87 2.85
CFM
Watts
Current/A
CFM
Watts
Current/A
CFM
Power/W
Current/A
Model
Number
Motor
Speed
CFM Wet Coil witho
ut filter and Electric Heat
External Static Pressure-Inches W.C.[kPa]
60
Low
Medium
High
42
Low
Medium
High
48
Low
Medium
High
--- Shaded boxes represent airflow outside the required 300-450 cfm/ton.
NOTES: Airflow based upon cooling performance at 230V with no electric heat and no filter.
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).
IMPORTANT:
1. If unit is converted to downflow, the airflow for model 18 must be between 350 and 450 cfm/ton.
2. When model 44 used for mobile home, you need to ensure that the air volume is not less than 1335 CFM.
3. When model 48 used for mobile home, you need to ensure that the air volume is not less than 1584 CFM.
1726
678
2.95
1983
695
3.02
2138
793
3.45
1693
658
2.87
1933
675
2.93
2086
773
3.37
1655
639
2.78
1879
655
2.85
2024
751
3.27
1637
619
2.69
1828
635
2.76
1952
726
3.17
1584
602
2.62
1760
615
2.67
1873
702
3.06
1500
576
2.52
1685
596
2.59
1797
679
2.97
1421
553
2.42
1597
574
2.5
1722
658
2.88
1328
526
2.31
1507
550
2.4
1646
638
2.79
1217
495
2.18
1403
522
2.28
1516
604
2.65
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