Bryant 912SD Installation, Start-Up, Operating And Service And Maintenance Instructions page 32

FURNACE RETURN-- AIR
SIZE CONNECTION
SIDE/
30040E14
BOTTOM
SIDE/
36040E17
BOTTOM
SIDE/
36060E14
BOTTOM
SIDE/
42060E17
BOTTOM
SIDE/
48080E17
BOTTOM
BOTTOM
or
60080E21
TWO---
5, 6
SIDES
BOTTOM
or
60100E21
TWO---
5, 6
SIDES
BOTTOM
or
60120E24
TWO---
5, 6
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 in Product Data sheet. 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. The "Function" column identifies with speed taps can be used for heating. 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. If the same motor speed tap is needed for heating and cooling, a Jumper Wire accessory kit is available, see Product Data sheet for the current Jumper
Wire accessory part number. Reference the "Start---up, Adjustments, and Safety Check" section for further Jumper Wire instructions.
5. 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.
6. 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.
7. The " ---" entry indicates an unstable operating condition.
Table 9 – Air Delivery - - CFM (With Filter)
SPEED
Function
TAPS
Gray Cooling. Do not use for heating.
Yellow Cooling. Do not use for heating.
Blue Heating or alt Cooling
Orange Alt Cooling or alt Heating
Red Alt Cooling. Do not use for heating.
Gray Cooling. Do not use for heating.
Yellow Cooling. Do not use for heating.
Orange Alt Cooling or alt Heating
Blue Heating or alt Cooling
Red Alt Cooling. Do not use for heating.
Gray Cooling. Do not use for heating.
Blue Heating or alt Cooling
Yellow Alt Cooling or alt Heating
Orange Alt Cooling or alt Heating
Red Alt Cooling. Do not use for heating.
Gray Cooling. Do not use for heating.
Yellow Alt Cooling or alt Heating
Blue Heating or alt Cooling
Orange Alt Cooling or alt Heating
Red Alt Cooling. Do not use for heating.
Gray Cooling. Do not use for heating.
Blue Heating or alt Cooling
Yellow Alt Cooling or alt Heating
Orange Alt Cooling. Do not use for heating.
Red Alt Cooling. Do not use for heating.
Gray Cooling. Do not use for heating.
Yellow Alt Cooling or alt Heating
Blue Heating or alt Cooling
Orange Alt Cooling or alt Heating
Red Alt Cooling. Do not use for heating.
Gray Cooling. Do not use for heating.
Blue Heating or alt Cooling
Yellow Alt Cooling or alt Heating
Orange Alt Cooling or alt Heating
Red Alt Cooling. Do not use for heating.
Gray Cooling. Do not use for heating.
Blue Heating or alt Cooling
Yellow Alt Cooling or alt Heating
Orange Alt Cooling. Do not use for heating.
Red Alt Cooling. Do not use for heating.
EXTERNAL STATIC PRESSURE (IN.W.C.)
0.10 0.20 0.30 0.40
1120 1085 1055 1015
925 885 850 810
765 725 685 640
750 710 665 625
510 435 400 345
1120 1090 1055 1020
910 880 845 800
835 795 760 720
740 700 660 610
555 500 445 395
1165 1140 1110 1080 1035 1000
1105 1085 1050 1010
1040 1000 960 920
840 795 750 705
745 615 555 510
1335 1300 1275 1230 1190 1135 1090 1040
1170 1135 1095 1045
1010 965 910 855
960 905 855 800
910 735 675 605
1545 1505 1460 1420 1365 1320 1275 1225 1180 1135
1375 1330 1275 1225 1175 1125 1075 1025
1195 1140 1090 1040
1015 955 900 845
945 735 575 520
2020 1965 1920 1865 1815 1760 1705 1650 1595 1545
1650 1590 1535 1475 1425 1370 1315 1260 1205 1145
1495 1430 1365 1310 1260 1200 1145 1085 1030
1420 1355 1290 1235 1175 1120 1060 1005
1200 1120 1060 995
2060 2010 1955 1905 1850 1800 1750 1690 1630 1565
1730 1675 1620 1565 1510 1455 1385 1325 1270 1210
1685 1630 1570 1515 1460 1410 1345 1280 1225 1170
1445 1370 1310 1250 1185 1115 1055 1005
1235 1155 1090 1020
2070 2020 1965 1910 1850 1790 1725 1660 1605 1550
1795 1735 1680 1620 1560 1495 1440 1375 1315 1255
1465 1400 1340 1270 1210 1150 1090 1030
1295 1235 1165 1095 1030
1095 1020 945 875
32
0.50 0.60 0.70 0.80 0.90
985 950 915 880 850
775 735 695 660 620
605 565 525 475 430
585 545 500 455 405
290 230 190 145 --- 7
985 950 915 875 840
760 720 680 640 595
680 630 585 540 505
565 520 475 440 405
350 315 260 205 --- 7
960 920 870
975 930 890 845 795
880 840 785 740 690
655 610 555 500 450
450 390 340 290 230
985
995 940 890 825 770
800 735 675 615 555
740 675 615 555 505
535 485 430 375 330
970
985 930 875 815 765
780 730 670 615 550
450 375 325 260 --- 7
945
940 875 810 750 685
950
945 900 835 755 690
950
970 905 825 760
805 730 660 585 525
1.00
815
580
375
350
--- 7
805
555
475
365
--- 7
825
755
640
395
195
925
700
505
460
265
920
705
490
--- 7
970
890
625
875
635
880
700
465