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Table 12 —
PSC Blower Motor Performance Data
LEGEND
NOTES:
1. Shaded areas denote ESP where operation is not recommended.
2. Units factory shipped on medium speed. Other speeds require field
selection.
3. All airflow is rated and shown above at the lower voltage if unit is dual
voltage rated, e.g., 208 v for 208/230 v units.
4. Only two-speed fan (high and medium) available on 575 v units.
5. Data for units 006-012 not available at time of printing.
Table 13 — PSC Blower Motor Performance Data for 50PS Units with HWR
LEGEND
NOTES:
1. For units with HWR coil applications, calculate face velocity of the enter-
ing air. From the data table, find ESP for reheat application. The loss
includes wet coil loss.
2. Data for units 006-012 not available at time of printing.
50PS
UNIT
SIZE
RATED
AIRFLOW
MIN
CFM
FAN
SPEED
AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg)
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.60 0.70 0.80 0.90 1.00
018 600 450
HI 704 708 711 702 693 692 690 683 675 658 640 598 515
MED 602 601 599 590 581 583 585 579 573 560 547 492
LO 531 529 527 522 517 512 506 501 495 479 462
HS HI 894 886 877 859 841 827 812 786 760 744 728 659
HS MED 765 760 755 747 738 725 711 690 668 654 640 602
HS LO 683 672 661 649 636 616 596 584 571 560 549
024 850 600
HI 965 960 954 943 931 923 914 898 882 862 842 794 725 635
MED 841 833 825 817 809 800 790 777 763 747 731 686 623
LO 723 715 707 703 698 689 680 668 656 642 627
HS HI 1271 1250 1229 1207 1185 1164 1143 1118 1093 1061 1029 953 875 753
HS MED 1048 1037 1025 1016 1007 994 981 962 943 915 886 822 731 626
HS LO 890 887 884 879 874 865 855 842 829 809 789 726 660
030 950 750
HI 1271 1250 1229 1207 1185 1164 1143 1118 1093 1061 1029 953 875 753
MED 1048 1037 1025 1016 1007 994 981 962 943 915 886 822
LO 890 887 884 879 874 865 855 842 829 809 789
HS HI 1439 1411 1383 1355 1327 1297 1266 1232 1198 1160 1122 1041 943 830
HS MED 1186 1174 1162 1151 1140 1126 1112 1089 1065 1039 1013 946 870 762
HS LO 1039 1038 1036 1028 1020 1009 997 983 968 946 923 866 798
036 1250 900
HI 1411 1407 1402 1390 1378 1370 1361 1326 1290 1248 1205 1083 942
MED 1171 1164 1156 1145 1133 1113 1092 1064 1035 997 958
LO 983 967 950 943 936 936
HS HI 1648 1633 1617 1597 1576 1557 1537 1493 1448 1397 1345 1207 1051 957
HS MED 1344 1335 1325 1312 1299 1276 1253 1220 1186 1143 1099 1007 903
HS LO 1141 1128 1115 1106 1097 1077 1057 1031 1005 966 926
042 1400 1050
HI 1634 1626 1618 1606 1594 1583 1571 1539 1507 1464 1420 1265 1078
MED 1332 1323 1314 1298 1282 1263 1243 1206 1169 1115 1060
LO 1130 1109 1088 1086 1084 1066 1048 1052 1055
HS HI 1798 1781 1764 1738 1711 1688 1665 1630 1595 1555 1514 1420 1239
HS MED 1384 1382 1379 1375 1371 1356 1341 1318 1294 1261 1227
HS LO 1091 1088 1084 1081 1078 1069 1060
048 1600 1200
HI 1798 1781 1764 1738 1711 1688 1665 1630 1595 1555 1514 1420 1239
MED 1384 1382 1379 1375 1371 1356 1341 1318 1294 1261 1227
LO
HS HI 2011 1977 1942 1923 1903 1841 1778 1755 1732 1689 1645 1520 1431 1307 1211
HS MED 1881 1858 1834 1807 1780 1746 1711 1676 1640 1604 1567 1469 1378 1286
HS LO 1738 1716 1694 1673 1651 1634 1617 1584 1551 1508 1465 1390 1321 1228
060 1950 1500
HI 2311 2306 2300 2290 2279 2268 2257 2233 2209 2175 2140 2088 1990 1901 1856 1752
MED 2058 2049 2039 2028 2016 2000 1983 1966 1949 1935 1920 1874 1807 1750 1670 1582
LO 1868 1863 1858 1858 1858 1848 1838 1822 1806 1799 1792 1749 1699 1636 1570
HS HI 2510 2498 2486 2471 2455 2440 2424 2401 2377 2348 2318 2247 2161 2078 1986 1855
HS MED 2171 2167 2162 2162 2162 2158 2153 2135 2117 2101 2085 2024 1971 1891 1823 1691
HS LO 2010 2008 2006 2006 2006 2006 2006 1992 1977 1962 1947 1892 1851 1782 1705 1600
070 2100 1800
HI 2510 2498 2486 2471 2455 2440 2424 2401 2377 2348 2318 2247 2161 2078 1986 1855
MED 2171 2167 2162 2162 2162 2158 2153 2135 2117 2101 2085 2024 1971 1891 1823
LO 2010 2008 2006 2006 2006 2006 2006 1992 1977 1962 1947 1892 1851
ESP — External Static Pressure
HS — High Static
COIL
FACE VELOCITY
FPM
UNITS WITH REHEAT ESP LOSS
018
in. wg
024,030
in. wg
036
in. wg
042,048
in. wg
060,070
in. wg
200 0.037 0.033 0.031 0.028 0.026
250 0.052 0.046 0.042 0.038 0.034
300 0.077 0.066 0.059 0.051 0.044
350 0.113 0.096 0.085 0.073 0.061
400 0.181 0.160 0.145 0.131 0.117
450 0.242 0.226 0.215 0.205 0.194
500 0.360 0.345 0.335 0.326 0.316
ESP — External Static Pressure
HWR — Hot Water Reheat