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MODEL & SIZE
BLOWER SPEED
PF4MNB 019
PF4MNB 025
PF4MNB 031
PF4MNB 037
PF4MNB 043
PF4MNB 049
PF4MNB 061
- Shading - Airflow outside 450 cfm/ton.
NOTES:
1. Airflow based upon dry coil at 230v with factory approved filter and electric heater (2 element heater sizes 019 through 037, 3 element heater sizes
043 through 061).
2. Airflow at 208 volts is approximately the same as 230 volts because the multi-tap ECM motor is a constant torque motor. The torque doesn't drop
off at the speeds the motor operates.
3. To avoid potential for condensate blowing out of drain pan prior to making drain trap:
Return static pressure must be less than 0.40 in. wc.
Horizontal applications of 043 - 061 sizes must have supply static greater than 0.20 in. wc.
4. Airflow above 400 cfm/ton on 049 - 061 size could result in condensate blowing off coil or splashing out of drain pan.
AIRFLOW PERFORMANCE TABLES
Table 1 – Airflow Performance (CFM)
0.10
Tap 5
776
Tap 4
683
Tap 3
683
Tap 2
631
Tap 1
625
Tap 5
956
Tap 4
825
Tap 3
825
Tap 2
726
Tap 1
631
Tap 5
1189
Tap 4
1041
Tap 3
1041
Tap 2
924
Tap 1
779
Tap 5
1363
Tap 4
1237
Tap 3
1237
Tap 2
1095
Tap 1
1014
Tap 5
1519
Tap 4
1437
Tap 3
1437
Tap 2
1257
Tap 1
1237
Tap 5
1757
Tap 4
1664
Tap 3
1664
Tap 2
1459
Tap 1
1301
Tap 5
2030
Tap 4
1811
Tap 3
1811
Tap 2
1665
Tap 1
1462
EXTERNAL STATIC (in. wc)
0.20
0.30
745
696
644
589
644
589
563
500
524
457
920
891
795
757
795
757
695
635
563
500
1151
1104
998
944
998
944
876
817
693
628
1332
1294
1206
1160
1206
1160
1058
1007
885
773
1490
1454
1403
1366
1403
1366
1226
1191
1206
1160
1725
1693
1626
1593
1626
1593
1420
1379
1241
1195
1995
1961
1775
1740
1775
1740
1632
1593
1418
1371
10
0.40
0.50
660
609
548
494
548
494
443
409
417
367
851
816
722
674
722
674
598
543
443
409
1050
1003
886
837
886
837
752
704
571
526
1253
1207
1121
1070
1121
1070
951
888
673
609
1419
1379
1333
1294
1333
1294
1141
1090
1121
1070
1653
1614
1552
1517
1552
1517
1336
1298
1150
1102
1927
1888
1703
1664
1703
1664
1556
1507
1327
1278
0.60
572
461
461
361
319
780
634
634
509
361
959
772
772
660
476
1157
1013
1013
824
549
1332
1245
1245
1033
1013
1576
1477
1477
1259
1039
1842
1613
1613
1453
1228
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