Carrier 58SU0A Installation, Start-Up, Operating And Service And Maintenance Instructions page 16

Wire Lead Wire Lead
Furnace
2
Color
Gray Cooling. Do not use for heating.
Yellow Alt Cooling or alt Heating
060­16 Orange Alt Cooling or alt Heating
Blue Heating or alt cooling
Red Alt Cooling or alt Heating
Gray Cooling. Do not use for heating.
Yellow Alt Cooling or alt Heating
Alt Cooling or alt Heating
Orange
080­20
Blue Heating or alt cooling
Red
Alt Heating or alt cooling
1. 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.
2. Adjust the blower speed tabs as necessary for the proper air temperature rise for each installation.
NOMINAL IRON
PIPE
SIZE IN. (mm)
1/2 (13)
3/4 (19)
1 (25)
1-1/4 (32)
1-1/2 (38)
* Cubic ft. of natural gas per hr for gas pressures of 0.5 psig (14-In. W.C.) or less and a pressure drop of 0.5-In. W.C. (based on a 0.60 specific gravity
gas). Ref: Chapter 6 current edition of ANSI Z223/NFPA 54.
Piping should be pressure and leak tested in accordance with
NFGC in the United States, local, and national plumbing and gas
codes before the furnace has been connected. After all
connections have been made, purge lines and check for leakage at
furnace prior to operating furnace.
If pressure exceeds 0.5 psig (14−In. W.C.), gas supply pipe must
be disconnected from furnace and capped before and during
supply pipe pressure test. If test pressure is equal to or less than
0.5 psig (14−In. W.C.), turn off electric shutoff switch located on
furnace gas control valve and accessible manual equipment
shutoff valve before and during supply pipe pressure test. After
all connections have been made, purge lines and check for
leakage at furnace prior to operating furnace.
The gas supply pressure shall be within the maximum and
minimum inlet supply pressures marked on the rating plate with
the furnace burners ON and OFF.
Table 5 – Air Delivery − CFM (With Filter)
Function
0.1
1720
1470
1305
1040
1135
0.1
2185
1885
1565
1365
1205
Table 6 – Maximum Capacity of Pipe*
INTERNAL
DIAMETER
In. (mm) 10
0.622 (16) 175 (53)
0.824 (21) 360 (110)
1.049 (27) 680 (207)
1.380 (35) 1400 (427)
1.610 (41) 2100 (640)
Test Airflow Delivery @ Various External Static Pressures
External Static Pressure (IN. W.C.)
0.2 0.3 0.4 0.5
1680 1635 1585 1545
1425 1385 1335 1290
1255 1215 1160 1115
940 890 835 790
1090 1035 985 940
0.2 0.3 0.4 0.5
2135 2085 2035 1990
1830 1780 1730 1675
1500 1440 1385 1330
1295 1230 1165 1100
1045 965 895 815
LENGTH OF PIPE - FT. (M)
20
120 (37)
250 (76) 200 (61)
465 (142) 375 (114)
950 (290) 770 (235)
1460 (445) 1180 (360)
GAS
SUPPLY
MANUAL
SHUTOFF
VALVE
(REQUIRED)
SEDIMENT
TRAP
UNION
Fig. 18 − Typical Gas Pipe Arrangement
16
0.6 0.7 0.8
1505 1455 1405
1245 1200 1160
1070 1025 975
740 675 620
895 845 790
0.6 0.7 0.8
1935 1880 1825
1625 1575 1520
1275 1220 1170
1045 985 925
745 650 595
30 40
97 (30) 82 (25)
170 (52)
320 (98)
660 (201) 580 (177)
990 (301) 900 (274)
0.9 1.0
1355 1305
1110 1060
925 870
565 525
730 675
0.9 1.0
1770 1715
1470 1420
1115 1055
845 780
540 480
50
73 (22)
151 (46)
285 (87)
A02035