Air Ducts; General Requirements; Ductwork Acoustical Treatment; Air Delivery Cfm - Carrier 59SP5A Installation, Start-Up, Operating And Service And Maintenance Instructions

AIR DUCTS

General Requirements

The duct system should be designed and sized according to
accepted national standards such as those published by: Air
Conditioning Contractors Association (ACCA), Sheet Metal and
Air Conditioning Contractors National Association (SMACNA) or
American Society of Heating, Refrigerating and Air Conditioning
Engineers (ASHRAE) or consult The Air Systems Design
Guidelines reference tables available from your local distributor.
The duct system should be sized to handle the required system
design CFM at the design external static pressure. The furnace
airflow rates are provided in Table 7- -Air Delivery- -CFM (With
Filter). When a furnace is installed so that the supply ducts carry air
circulated by the furnace to areas outside the space containing the
furnace, the return air shall also be handled by duct(s) sealed to the
furnace casing and terminating outside the space containing the
furnace.
Secure ductwork with proper fasteners for type of ductwork used.
Seal supply- - and return- -duct connections to furnace with code
approved tape or duct sealer.
NOTE: Flexible connections should be used between ductwork
and furnace to prevent transmission of vibration.
INPUT RETURN-AIR
SPEED
BTUH SUPPLY
5(Gry)
4(Yel)
40000 SIDE/BOTTOM 3(Blu)
2(Org)
1(Red)
5(Gry)
4(Yel)
3(Blu)
60000 SIDE/BOTTOM
2(Org)
1(Red)
5(Gry)
4(Yel)
3(Blu)
80000 SIDE/BOTTOM
2(Org)
1(Red)
5(Gry)
4(Yel)
3(Blu)
100000 SIDE/BOTTOM
2(Org)
1(Red)
5(Gry)
4(Yel)
BOTTOM
OR 3(Blu)
120000
TWO SIDES
2(Org)
1(Red)
*A filter is required for each return ---air inlet. Airflow performance included 3/4 ---in. (19 mm) 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. W.C. available external static pressure.
--- Indicates unstable operating conditions.
Table 7 – Air Delivery - - CFM (With Filter)
EXTERNAL STATIC PRESSURE (IN. W.C.)
0.1 0.2 0.3
1120 1080 1030
880 845 810
695 665 620
640 595 540
570 525 475
1720 1670 1620 1565
1325 1285 1255 1220
1010 970 925
1160 1115 1080 1045
785 715 655
1810 1770 1720 1665
1535 1500 1475 1435
1380 1340 1305 1270
1180 1130 1095 1060
1100 1045 1010
2040 1970 1885 1795
1550 1505 1460 1415
1780 1730 1690 1645
1345 1295 1250 1195
1390 1350 1295 1260
2275 2230 2185 2130
1875 1820 1770 1720
2170 2125 2075 2025
1475 1420 1350 1280
1625 1565 1505 1445
Ductwork passing through unconditioned space should be
insulated to enhance system performance. When air conditioning is
used, a vapor barrier is recommended.
Maintain a 1- -in. (25 mm) clearance from combustible materials to
supply air ductwork for a distance of 36- -in. (914 mm) horizontally
from the furnace. See NFPA 90B or local code for further
requirements.

Ductwork Acoustical Treatment

NOTE: Metal duct systems that do not have a 90 degree elbow
and 10 ft. (3 M) of main duct to the first branch take- -off may
require internal acoustical lining. As an alternative, fibrous
ductwork may be used if constructed and installed in accordance
with the latest edition of SMACNA construction standard on
fibrous glass ducts. Both acoustical lining and fibrous ductwork
shall comply with NFPA 90B as tested by UL Standard 181 for
Class 1 Rigid air ducts.
NOTE: For horizontal applications, the top most flange may be
bent past 90_ to allow the evaporator coil to hang on the flange
temporarily while the remaining attachment and sealing of the coil
are performed.
0.4 0.5 0.6
980 925 875 820
780 740 710 680
575 535 495 455
495 460 420 370
425 385 330 255
1505 1440 1375
1185 1145 1115
875 835 785 745
1000 960 920
595 530 490 435
1610 1540 1475
1405 1370 1340
1240 1200 1165
1015 975 935
970 920 885 845
1720 1635 1540
1365 1325 1280
1610 1555 1481
1155 1105 1055
1200 1160 1105
2055 1950 1825
1660 1600 1550
1975 1900 1790
1215 1165 1105
1385 1325 1275
27
0.7 0.8 0.9
760 690 630
640 615 570
420 370 280
310 260 230
220 -
1295 1220 1135
1075 1040 1000
690 660 620
875 840 785
385 340 285
1400 1315 1235
1310 1245 1160
1130 1090 1050
895 850 800
790 745 690
1450 1360 1230
1230 1180 1135
1400 1310 1210
1000 955 915
1050 1010 965
1710 1610 1500
1505 1450 1390
1695 1590 1470
1050 995 930
1225 1170 1130
1
-