Carrier 48NLT - Page 18

Table 8 — Dry Coil Air Delivery {Cfm)*
at Indicated External Static Pressure and Voltage
- Horizontal Discharge (Without Filter)
48
V-PH-HZ
MOTOR
SPEED
208 V
230 V or 460 V
in. wg
0.0
0.3
0.4 0.5
0.0
0.1
WEm\
0.4
0.5
NLT018, NLT024,
NHT024
208/230-1-60
Lowt,
Med* **
Watts
451
427
407 383
365 348
501 477
457
433
415
398
Cfm
1185 1129
1088
1026 979
922
1256 1195
1148
1081
1031
971
Hi
Watts 511 483 464 440
420
402
561 533 514
490
470
452
Cfm
1370
1291 i 1221 1142 1063
1003 1442 1359
1285 I 1202
1119
1056
NLT030, NMT030
208/230-1-60
Lowt,
Med**
Watts 519
507
492
477 455 431 569
557 542
527
505
481
Cfm 1184 1163
1150
1134 1105
1064
1248
1226 1211 1194 1164
mm
Hi
Watts 620
602
581 559
532 493 670
652 631 609 582
Cfm 1443
1414
1376 1329 1279
1197
1519
1489 1449 1399
1347
1261
NHT030, NLT036
NMT036, NLT042
NMT042
208/230-1-60
208/230-3-60,
460-3-60tt
Lowt,
Med**
Watts
I 560
544
527 505
482 461
610
593 575 500
524
494
Cfm
1515 1452
1389 1308
1227
1105
1597 1530
1464 1378 1293
1164
Hi
Watts 670
650
631
602 573
542
720 701
680 653 625
594
Cfm 1765 1705 1621 1521 1383
1254 1857 1795 1708
1603 1457
1321
NET036, 042
208/230-1-60
208/230-3-60
460-3-60tt
Lowt,
Med**
Watts
873 847 814 785 758
734 987
945
911
877 850
809
Cfm
1717
1690 1645 1597 1550
1496 1979 1922 1859
1802
1734
1667
Hi
Watts
1075 1030
995 960
930
900 1121 1087 1046
1017 981
952
Cfm
2119
2062
1995 1913
1863 1793 2135 2066 1998
1931 1858
1795
NHT036, NVT036
NHT042, NVT042
208/230-1-60
208/230-3-60
460-3-60tt
Lowt,
Med**
Watts 740 700
660
615 580
540 755 725 680
650 610
575
Cfm 1913 1820
1736
1645 1544
1428
1976 1909
1806
1714 1603
1495
Hi
Watts 790
760
720 690
650 610
850
820 780
750 715
675
Cfm 2032
1942
1844 1759 1636
1514
2086
1983 1883
1782 1665
1545
NLT048, NMT048
NHT048
208/230-1-60
208/230-3-60
460-3-60tt
Lowt,
Med**
Watts 770 730 690 650
610 575 810 765 730
695
655
610
Cfm 1945 1880
1796
1708 1611
1508 2061 1970
1892
1813
1704
Hi
Watts 850
810
770 730
690
655
890 855
820 780^ 750
715
Cfm 2138
2045
1943 1846
1738
1624
2178
2081
1941 1869 1769
1650
NVT048
208/230-1-60
208/230-3-60
460-3-60tt
Lowt,
Med**
Watts
985 950
915
890 860
820
1095
1055 1010
975 935
890
Cfm 1931 1901 1862 1813
1768 1703 2183 2125
2071 2005 1931 1854
Hi
Watts 1220
1165
1130
1080
1035 995
1300
1265 1220
1180 1120
Cfm 2376 2311 2244
2170
2083
2003 2511
2431
2359
2271 2168
NLT060, NIVFT060 I
NHT060, NVT060
208/230-1-60
208/230-3-60
460-3-60tt
Lowt,
Med**
Watts 1125
1055
1015 980
940
905
1205 1125
1095 1060 1030
990
Cfm 2184 2125
2063
2000 1938
1880 2285 2225 2163
2106
2045
1980
Hi
Watts
1220 1175
1125 1080
1040
1005
1300 1250
1210 1165 1130 1085
Cfm 2380
2307
2262 2165
2095
2024
2487
2412 2335 2260 2179
2110
*Air delivery values are without air filter and are for dry coil. See Table 10 for wet coll pressure drop.
Deduct field-supplied air filter pressure drop and wet coil pressure drop to obtain external static
pressure available for ducting.
tFactory blower-motor speed setting for heating operation.
**Factory blower-motor speed setting for cooling operation.
ttDo not change blower speed settings for units with 460-v (high speed only).
NOTE: Do not operate the unit at a cooling airflow that is less than 350 cfm per each 12,000 Btuh of
rated cooling capacity. Evaporator coil Icing may occur at airflows below this point. Water blow-off may
occur at airflows above 450 cfm per 12,000 Btuh of rated cooling capacity
The heating and/or cooling airflow of 208/230-v direct-
drive blower motors can be changed by changing the lead
connections of the blower motor. The motor leads are color-
coded as follows:
black =high speed
blue = medium speed
red =low speed
NOTE: For all 208/230-v direct-drive units, the red motor
lead connected to the heat relay (L) on PCI blower control
determines the heating speed and resulting airflow, and the
blue motor lead connected to the cooling relay (H) on PCI
blower control determines the cooling speed and resulting
airflow. See the unit wiring label.
To change the heating and/or cooling speed of a direct-
drive motor, connect the appropriate color-coded lead at blower
motor connector to speed-tap desired. (See unit wiring
label.)
When installing a 208- or 230-v direct-drive unit that is
factory connected for heating and cooling speeds that are
not the same, and the same speed for both heating and cool¬
ing is required for a particular application, disconnect red
lead at terminal L of heat relay and connect to terminal MI
on PCI blower control. Connect a field-supplied jumper be¬
tween terminal L on heat relay and terminal H of cooling
relay. Connect blue lead at blower motor to appropriate speed
tap.
18