Carrier 120/C Series Installation, Start-Up, Operating And Service And Maintenance Instructions page 16

FURNACE RETURN-AIR
SIZE INLET
Bottom
024045 or
Side(s)
Bottom
036045 or
Side(s)
Bottom
024070 or
Side(s)
Bottom
036070 or
Side(s)
Bottom
048070 or
Side(s)
Bottom
042090 or
Side(s)
Bottom
048090 or
Side(s)
Bottom
Only
Both Sides or
060090
1 Side & Bottom
1 Side Only
Bottom
036110 or
Side(s)
Bottom
048110 or
Side(s)
Bottom
Only
066110
Bottom Sides or
1 Side & Bottom
1 Side Only
*A filter is required for each return-air inlet. Airflow performance included 1-in. washable filter media such as contained in factory-authorized accessory filter rack. To
determine airflow performance without this filter, assume an additional 0.1 in. wc available external static pressure.
-- Indicates unstable operating conditions.
Table 5—Air Delivery - CFM (With Filter)*
SPEED
0.1 0.2
High 1085 1035
Med-High 920 875
Med-Low 820 775
High 1440 1375
Med-High 1360 1300
Med-Low 1250 1210
Low 1085 1055
High 1030 1010
Med-High 835 815
Med-Low 725 700
High 1425 1375
Med-High 1320 1280
Med-Low 120 1175
Low 1040 1030
High 1805 1740
Med-High 1630 1585
Med-Low 1460 1420
Low 1275 1250
High 1650 1600
Med-High 1515 1485
Med-Low 1385 1360
Low 1205 1180
High 2060 1985
Med-High 1790 1765
Med-Low 1505 1505
Low 1225 1225
High 2405 2310
Med-High 2225 2155
Med-Low 2020 1955
Low 1810 1765
High 2530 2450
Med-High 2285 2215
Med-Low 1995 1945
Low 1770 1740
High 2475 2395
Med-High 2260 2190
Med-Low 1950 1910
Low 1730 1695
High 1625 1575
Med-High 1510 1470
Med-Low 1360 1335
Low 1195 1180
High 2035 1965
Med-High 1745 1710
Med-Low 1530 1515
Low 1270 1265
High 2530 2470
Med-High 2230 2205
Med-Low 1920 1900
Low 1640 1650
High -- --
Med-High 2235 2200
High 2540 2495
Med-High 2125 2120
EXTERNAL STATIC PRESSURE (IN. WC)
0.3 0.4 0.5 0.6
975 915 845 770
830 770 710 640
730 680 620 555
1305 1240 1160 1070
1240 1175 1115 1040
1160 1100 1040 965
1035 990 945 885
980 945 900 845
790 760 720 675
675 645 600 555
1320 1265 1200 1125
1240 1205 1140 1075
1145 1105 1050 990
1010 985 945 895
1670 1600 1530 1445
1530 1470 1405 1330
1385 1325 1280 1220
1225 1195 1155 1105
1535 1465 1385 1285
1440 1380 1300 1220
1320 1260 1195 1120
1160 1120 1065 1005
1915 1820 1720 1610
1715 1645 1560 1470
1480 1440 1375 1300
1220 1195 1155 1085
2220 2130 2025 1920
2080 1995 1895 1785
1880 1805 1730 1630
1715 1645 1565 1480
2365 2270 2165 2065
2150 2075 1985 1890
1900 1840 1770 1685
1700 1645 1575 1505
2300 2200 2090 1985
2110 2035 1940 1845
1855 1795 1730 1650
1650 1600 1535 1470
1515 1445 1355 1260
1415 1355 1285 1185
1295 1250 1180 1100
1155 1115 1065 980
1880 1790 1680 1495
1650 1560 1450 1340
1470 1400 1310 1215
1235 1195 1130 1055
2400 2320 2220 2115
2165 2110 2035 1950
1880 1845 1795 1730
1635 1610 1575 1520
2415 2350 2250 2145
2155 2100 2040 1955
2430 2355 2265 2175
2105 2060 2010 1940
16
0.7 0.8 0.9 1.0
675 565 390 195
555 440 250
470 360 190
975 870 730 560
950 850 725 575
885 790 670 520
810 715 595 435
775 680 490 335
610 490 375 265
475 390 300
1035 940 830 655
995 905 790 620
920 840 725 555
845 765 655 505
1360 1280 1180 1075
1255 1170 1080 990
1155 1080 995 910
1050 980 910 835
1175 1055 895 645
1115 990 830 600
1025 915 710 565
925 810 630 510
1490 1340 1135 925
1345 1195 1010 820
1190 1045 890 740
985 870 735 620
1790 1660 1530 1350
1675 1565 1420 1260
1535 1420 1275 1135
1390 1280 1145 1005
1940 1805 1670 1505
1780 1660 1525 1360
1600 1480 1350 1180
1415 1325 1190 1040
1865 1730 1585 1425
1735 1620 1475 1325
1555 1445 1310 1150
1385 1285 1165 1000
1165 990 785 595
1070 890 725 530
985 810 670 475
860 740 605 410
1365 1215 1075 875
1205 1090 955 750
1095 990 830 670
970 875 720 600
2000 1865 1730 1590
1855 1740 1615 1485
1650 1555 1460 1340
1455 1375 1285 1170
2015 1875 1715 1560
1850 1740 1595 1470
2065 1935 1785 1650
1840 1730 1615 1485
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