Carrier 59SP2A Installation, Start-Up, Operating And Service And Maintenance Instructions page 31

RETURN-AIR
UNIT SIZE
CONNECTION
040---10 SIDE/BOTTOM
040---12 SIDE/BOTTOM
060---12
SIDE/BOTTOM
060---14 SIDE/BOTTOM
080---16 SIDE/BOTTOM
BOTTOM or
080---20
TWO-SIDES
BOTTOM or
100---20
TWO-SIDES
BOTTOM or
120---20
TWO-SIDES
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 contained in a factory ---author-
ized accessory filter rack. See accessory list. To determine airflow performance without this filter, assume an additional 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. Airflows over 1800 CFM require bottom return, two ---side return, or bottom and side return. 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.
Table 9 – Air Delivery - - CFM (With Filter)
SPEED
2, 3
TAPS
Gray
Yellow
Orange
3
Blue
3
Red
Gray
Yellow
3
Blue
3
Orange
3
Red
Gray
Blue
Yellow
3
Orange
3
Red
Gray
Yellow
3
Blue
3
Orange
3
Red
Gray
Blue
3
Yellow
3
Orange
3
Red
Gray
Yellow
Blue
4, 5
Orange
3
Red
Gray
Blue
Yellow
4, 5
3
Orange
3
Red
Gray
Blue
3
Yellow
4, 5
3
Orange
3
Red
EXTERNAL STATIC PRESSURE (IN.W.C.)
0.1 0.2 0.3 0.4 0.5
1025 990 950 915 880
935 895 860 820 785
880 840 805 770 725
770 725 685 640 595
590 540 490 445 395
1165 1130 1095 1060 1025
965 920 880 835 795
785 735 690 645 600
680 625 580 525 480
585 530 475 425 375
1165 1140 1110 1080 1035
1105 1085 1050 1010 975
1040 1000 960 920 880
840 795 750 705 655
745 615 555 510 450
1335 1300 1275 1230 1190
1170 1135 1095 1045 995
1010 965 910 855 800
960 905 855 800 740
910 735 675 605 535
1545 1505 1460 1420 1365
1375 1330 1275 1225 1175
1195 1140 1090 1040 985
1015 955 900 845 780
945 735 575 520 450
2020 1965 1920 1865 1815
1650 1590 1535 1475 1425
1495 1430 1365 1310 1260
1420 1355 1290 1235 1175
1200 1120 1060 995 940
2060 2010 1955 1905 1850
1730 1675 1620 1565 1510
1685 1630 1570 1515 1460
1445 1370 1310 1250 1185
1235 1155 1090 1020 945
2030 1965 1910 1855 1800
1940 1875 1815 1760 1700
1670 1605 1535 1465 1395
1415 1340 1260 1185 1120
1215 1125 1045 975 900
31
0.6 0.7 0.8 0.9 1.0
845 800 765 725 690
740 700 660 625 585
685 640 600 560 515
550 510 465 415 370
6
345 280 240 - -
985 950 915 875 840
755 710 670 630 590
555 515 470 435 395
435 395 360 315 265
6
340 295 245 - -
1000 960 920 870 825
930 890 845 795 755
840 785 740 690 640
610 555 500 450 395
390 340 290 230 195
1135 1090 1040 985 925
940 890 825 770 700
735 675 615 555 505
675 615 555 505 460
485 430 375 330 265
1320 1275 1225 1180 1135
1125 1075 1025 970 920
930 875 815 765 705
730 670 615 550 490
6
375 325 260 - -
1760 1705 1650 1595 1545
1370 1315 1260 1205 1145
1200 1145 1085 1030 970
1120 1060 1005 945 890
875 810 750 685 625
1800 1750 1690 1630 1565
1455 1385 1325 1270 1210
1410 1345 1280 1225 1170
1115 1055 1005 950 875
900 835 755 690 635
1730 1655 1590 1535 1480
1625 1555 1495 1435 1370
1330 1275 1220 1155 1090
1055 1000 925 860 800
825 755 690 635 575
6
6
6