31
Table 9 – Air Delivery -- CFM (With Filter)
UNIT SIZE
RETURN-AIR
CONNECTION
SPEED
TAPS
2, 3
EXTERNAL STATIC PRESSURE (IN.W.C.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
040---10 SIDE/BOTTOM
Gray 1025 990 950 915 880 845 800 765 725 690
Yellow 935 895 860 820 785 740 700 660 625 585
Orange 880 840 805 770 725 685 640 600 560 515
Blue
3
770 725 685 640 595 550 510 465 415 370
Red
3
590 540 490 445 395 345 280 240 -
6
-
6
040---12 SIDE/BOTTOM
Gray 1165 1130 1095 1060 1025 985 950 915 875 840
Yellow 965 920 880 835 795 755 710 670 630 590
Blue
3
785 735 690 645 600 555 515 470 435 395
Orange
3
680 625 580 525 480 435 395 360 315 265
Red
3
585 530 475 425 375 340 295 245 -
6
-
6
060---12 SIDE/BOTTOM
Gray 1165 1140 1110 1080 1035 1000 960 920 870 825
Blue 1105 1085 1050 1010 975 930 890 845 795 755
Yellow 1040 1000 960 920 880 840 785 740 690 640
Orange
3
840 795 750 705 655 610 555 500 450 395
Red
3
745 615 555 510 450 390 340 290 230 195
060---14 SIDE/BOTTOM
Gray 1335 1300 1275 1230 1190 1135 1090 1040 985 925
Yellow 1170 1135 1095 1045 995 940 890 825 770 700
Blue
3
1010 965 910 855 800 735 675 615 555 505
Orange
3
960 905 855 800 740 675 615 555 505 460
Red
3
910 735 675 605 535 485 430 375 330 265
080---16 SIDE/BOTTOM
Gray 1545 1505 1460 1420 1365 1320 1275 1225 1180 1135
Blue 1375 1330 1275 1225 1175 1125 1075 1025 970 920
Yellow
3
1195 1140 1090 1040 985 930 875 815 765 705
Orange
3
1015 955 900 845 780 730 670 615 550 490
Red
3
945 735 575 520 450 375 325 260 -
6
-
6
080---20
BOTTOM or
TWO-SIDES
4, 5
Gray 2020 1965 1920 1865 1815 1760 1705 1650 1595 1545
Yellow 1650 1590 1535 1475 1425 1370 1315 1260 1205 1145
Blue 1495 1430 1365 1310 1260 1200 1145 1085 1030 970
Orange 1420 1355 1290 1235 1175 1120 1060 1005 945 890
Red
3
1200 1120 1060 995 940 875 810 750 685 625
100---20
BOTTOM or
TWO-SIDES
4, 5
Gray 2060 2010 1955 1905 1850 1800 1750 1690 1630 1565
Blue 1730 1675 1620 1565 1510 1455 1385 1325 1270 1210
Yellow 1685 1630 1570 1515 1460 1410 1345 1280 1225 1170
Orange
3
1445 1370 1310 1250 1185 1115 1055 1005 950 875
Red
3
1235 1155 1090 1020 945 900 835 755 690 635
120---20
BOTTOM or
TWO-SIDES
4, 5
Gray 2030 1965 1910 1855 1800 1730 1655 1590 1535 1480
Blue 1940 1875 1815 1760 1700 1625 1555 1495 1435 1370
Yellow
3
1670 1605 1535 1465 1395 1330 1275 1220 1155 1090
Orange
3
1415 1340 1260 1185 1120 1055 1000 925 860 800
Red
3
1215 1125 1045 975 900 825 755 690 635 575
NOTE:
1. A filter is required for each return---air inlet. Airflow performance includes a 3/4---in. (19 mm) washable filter media such as contain ed in a factory---author -
ized accessory filter rack. See accessory list. To determine airflow performance without this filter, assume an addition al 0.1 in. w.c. available external static
pressure.
2. ADJUST THE BLOWER SPEED TAPS AS NECESSARY FOR THE PROPER AIR TEMPERATURE RISE FOR EACH INSTALLATION.
3. Shaded areas indicate that this airflow range is BELOW THE RANGE ALLOWED FOR HEATING OPERATION. THESE AIRFLOW RANGES MAY ONLY BE
USED FOR COOLING.
4. Airfl ows over 1800 CFM require bottom return, two ---side return, or bottom and side retur n. A minimum filter size of 20” x 25” (508 x 635 mm) is required.
5. For upflow applications, air entering from one side into both the side of the furnace and a return air base counts as a side and bottom return.
6. The “---” entry indicates an unstable operating condition.
59SP2A
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