Carrier 48NLT - Manual (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 0.1 0.2 0.3 0.4 0.5 0.0 0.1 0.2 0.3 0.4 0.5
NLT018, NLT024,
NHT024
208/230-1-60
Lowf,
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 1221 1142 1063 1003 1442 1359 1285 1202 1119 1056
NLT030, NMT030
208/230-1-60
Lowf,
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 1120
Hi
Watts 620 602 581 559 532 493 670 652 631 609 582 543
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
Lowf,
Med“ Watts 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
Lowf,
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
Lowf,
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
Lowf,
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 1580
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
Lowf,
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 1085
Cfm 2376 2311 2244 2170 2083 2003 2511 2431 2359 2271 2168 2087
NLT060, NMT060
NHT060, NVT060
208/230-1-60
208/230-3-60
460-3-60tt
Lowf,
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 coil 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