Carrier FEM4X Installation Instructions Manual page 11

FEM4X, FEM4P, REM4X, REM4P: Installation Instructions
FEM4X, FEM4P, REM4X
HEATER
ELEMENTS
0
1
2
3
4
Model & Size
1800
FEM4P2400
FEM4P2400
FEM4X2400
REM4X2400
3000
3600
4200
4800
6000
- 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 1800 through 3600, 3 element heater sizes 4200 through 6000). For FEM4X,
FEM4P, and REM4X models, airflow at 208 volts is approximately the same as 230 volts because the ECM motor is a constant torque motor. The torque doesn't drop off at the speeds the
motor operates.
2.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 4200 - 6000 sizes must have supply static greater than 0.20 in. wc.
3.Airflow above 400 cfm/ton on 4800 - 6000 size could result in condensate blowing off coil or splashing out of drain pan.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 5 – Electric Heater Static Pressure Drop (in. w.c.)
1800 - 3600
EXTERNAL STATIC
kW PRESSURE
CORRECTION
0 +.02
3, 5 +.01
8, 10 0
9, 15 –.02
20 –.04
Table 6 – Airflow Performance (CFM)
Blower Speed
Tap 5
Tap 4
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
Tap 3
Tap 2
Tap 1
Tap 5
Tap 4
Tap 3
Tap 2
Tap 1
HEATER
ELEMENTS
0
2
3
4
6
Total Static (inches water column)
0.10 0.20 0.30
767 739 702
614 569 534
701 660 616
614 569 534
410 350 304
969 936 892
826 795 766
826 795 766
701 660 616
617 592 552
965 920 870
820 783 740
820 783 740
720 655 610
716 600 540
1108 1090 1065
1026 1000 969
1026 1000 969
909 873 842
825 795 757
1301 1276 1245
1227 1191 1169
1227 1191 1169
1087 1062 1030
1026 1000 969
1560 1544 1507
1419 1397 1358
1419 1397 1358
1249 1220 1184
1242 1205 1158
1743 1712 1679
1669 1634 1599
1669 1634 1599
1452 1413 1377
1300 1256 1221
1897 1867 1836
1817 1785 1757
1817 1785 1757
1657 1621 1589
1443 1412 1377
11
FEM4X, FEM4P, REM4X
4200 - 6000
EXTERNAL STATIC
kW
CORRECTION
0
8, 10
9, 15
20
18, 24, 30
0.40 0.50
669 620
486 436
581 537
486 436
261 228
835 763
743 706
743 706
581 537
507 472
823 780
680 630
680 630
555 485
495 430
1034 1009
938 899
938 899
799 762
722 674
1218 1176
1143 1105
1143 1105
1001 966
938 899
1464 1424
1320 1279
1320 1279
1142 1093
1110 1069
1642 1610
1564 1531
1564 1531
1339 1308
1182 1142
1808 1774
1724 1693
1724 1693
1557 1518
1332 1286
PRESSURE
+.04
+.02
0
–.02
–.10
0.60
565
398
499
398
203
676
660
660
499
420
740
575
575
450
328
974
865
865
724
634
1121
1074
1074
930
865
1358
1239
1239
1052
1026
1574
1499
1499
1271
1101
1736
1655
1655
1474
1243