Carrier 48N - Manual (Page 16)

Table 12—Model 48N Air Delivery (Cfm) at Indicated External
Static Pressure & Voitage (Sizes 48NLT018 thru 48NHT048)
End Discharge
External Static Pressure-Inches Water
48N Motor 208V 230V or 460V
Volt/Ph/Hz Speed 0.0 0.1 0.2 0.3 0.4 0.5 0.0 0.1 0.2 0.3 0.4 0.5
48NLT018,
48NLT024, 48NHT024
A t
Low 712 700 689 680 663 651 750 737 726 716 700 686
208/230-1-60 • t
Med 1185 1129 1088 1026 979 922 1256 1195 1148 1081 1031 971
Hi 1370 1291 1221 1142 1063 1003 1442 1359 1285 1202 1119 1056
48NLT030, 48NMT030 A t
Low 735 726 713 702 689 675 775 763 751 740 726 ' 711
208/230-1-60 • t
Med 1184 1163 1150 1134 1105 1064 1248 1226 1211 1194 1164 1120
Hi 1443 1414 1376 1329 1279 1197 1519 1489 1449 1399 1347 1261
48NHT030, LT036
48NMT036, LT042
A t
Low 1002 970 938 898 854 796 1056 1022 986 946 900 839
48NMT042
208/230-1-60
• t
Med 1515 1452 1389 1308 1227 1102 1597 1530 1464 1378 1293 1164-
208/230-3-60, 460-3-60 Hi 1764 1705 1621 1521 1383 1254 1857 1795 1708 1603 1457 1321
48NHT036, NVT036
48NHT042
Л
Low 1610 1570 1504 1435 1358 1260 1787 1733 1641 1559 1458 1345
208/230-1-60
208/230-3-60 •
Med 1913 1820 1736 1645 1544 1428 1976 1909 1806 1714 1603 1495
460-3-60t Hi 2032 1942 1844 1759 1636 1514 2086 1983 1883 1782 1665 1545
48NLT048, NMT048
48NHT048
A
Low 1627 1589 1527 1449 1364 1282 1807 1758 1704 1607 1518 1404
208/230-3-60 •
Med 1945 1880 1796 1708 1611 1508 2061 1970 1892 1813 1704 1580
460-3-60t Hi 2138 2045 1943 1846 1738 1624 2178 2081 1941 1869 1769 1650
(Applicable notes are listed below Table 13.)
Tabie 13—Down Discharge
External Static Pressure—Inches Water
48N Motor 208V 230V or 460V
Volt/Ph/Hz Speed 0.0 0.1 0.2 0.3 0.4 0.5 0.0 0.1 0.2 0.3 0.4 0.5
48NLT018
48NLT024, 48NHT024
АФ
Low 705 692 684 671 657 639 743 730 721 707 693 674
208/230-1-60 • t
Med 1138 1102 1045 996 942 889 1196 1161 1101 1050 993 932
Hi 1308 1234 1162 1084 1020 951 1379 1301 1225 1143 1075 1002
48NLT030, 48NMT030 A t
Low 724 715 706 695 682 665 763 754 744 733 719 701
208/230-1-60 • t
Med 1155 1138 1120 1104 1073 1031 1218 1200 1182 1165 1132 1088
Hi 1411 1362 1326 1249 1195 1133 1493 1457 1412 1358 1274 1218
48NHT030, LT036
48NMT036, LT042,
АФ
Low 969 947 911 863 816 760 1022 998 960 910 860 801
48NMT042
208/230-1-60
• t
Med 1494 1430 1358 1273 1174 1058 1574 1507 1431 1341 1237 1115
208/230-3-60, 460-3-60t Hi 1683 1615 1536 1440 1274 1153 1763 1700 1619 1492 1343 1215
48NHT036, NVT036
48NHT042, NVT048 A
Low 1534 1493 1430 1359 1280 1200 1704 1638 1553 1468 1390 1304
208/230-1-60
208/230-3-60 •
Med 1797 1709 1620 1547 1448 1315 1855 1707 1684 1574 1498 1361
460-3-60t Hi 1885 1779 1704 1608 1507 1404 1906 1821 1722 1623 1533 1410
48NLT048, 48NMT048
48NHT048
208/230-1-60
A
Low 1539 1515 1466 1410 1325 1229 1735 1688 1613 1539 1440 1334
208/230-3-60
208/230-3-60 •
Med 1833 1768 1700 1599 1505 1390 1918 1849 1752 1670 1561 1442
460-3-60t Hi 1957 1873 1786 1699 1598 1495 1997 1907 1817 1713 1618 1506
• Factory blower motor speed setting for cooling operation.
AFactory blower motor speed setting for heating operation.
*Air delivery values are without air filter and are for dry coil. See Table 16 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.
t460 volt units high speed only. Do not change blower speed settings.
tFor 208V operation, change the blower motor speed setting to the next higher speed. See steps 6 and 9.
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. Indoor coil icing may occur
at airflows below this point.
16