Gas Piping - Carrier 58CTA Installation, Start-Up, Operating And Service And Maintenance Instructions

FURNACE RETURN---AIR
SIZE INLET
Bottom
135--- 16/
or
048135
Side(s)
Bottom
Only
Bottom Sides
135--- 22/
or
066135
1 Side & Bottom
1 Side Only
Bottom Only
155--- 20/
060155 Both Sides Or 1
Side & Bottom
1 Side Only
*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 ac-
cessory 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.
Downflow Furnaces
Connect supply- -air duct to supply- -air outlet on furnace. Bend
flange inward past 90_ with wide duct pliers. (See Fig. 14.) The
supply- -air duct must be connected to ONLY the furnace
supplyoutlet or air conditioning coil casing (when used). When
installed on combustible material, supply- -air duct must be
connected to ONLY the factory- -approved accessory subbase, or
a factory approved air conditioning coil casing. DO NOT cut
main furnace casing to attach supply side air duct, humidifier, or
other accessories. All accessories MUST be connected to duct
external to furnace casing.
Return Air Connections
WARNING
!
FIRE HAZARD
Failure to follow this warning could cause personal injury,
death and/or property damage.
Never connect return- -air ducts to the back of the furnace.
Follow instructions below.
Downflow Furnaces
The return- -air duct must be connected to return- -air opening
(bottom inlet) as shown in Fig. 1. DO NOT cut into casing sides
(left or right). Side opening is permitted for only upflow and most
horizontal furnaces. Bypass humidifier connections should be
made at ductwork or coil casing sides exterior to furnace. (See
Fig. 19.)
Upflow and Horizontal Furnaces
The return- -air duct must be connected to bottom, sides (left or
right), or a combination of bottom and side(s) of main furnace
casing as shown in Fig. 1. Bypass humidifier may be attached
into unused return air side of the furnace casing. (See Fig. 18 and
20.) Not all horizontal furnaces are approved for side return air
connections. (See Fig. 20.)
Table 5 - - Air Delivery - - CFM (With Filter)* (Cont.)
SPEED
0.1 0.2
High 2090 2010
Med --- High 1790 1755
Med --- Low 1545 1525
Low 1325 1320
High 2485 2400
Med --- High 2195 2150
Med --- Low 1880 1850
Low 1640 1635
High --- --- --- ---
Med --- High 2180 2145
Med --- Low 1880 1850
Low 1640 1635
High 2320 2250
Med --- High 2125 2065
Med --- Low 1845 1825
Low 1640 1620
High 2465 2430
Med --- High 2115 2105
Med --- Low 1800 1790
Low 1570 1565
High --- --- --- ---
Med --- High 2155 2135
High --- --- --- ---
Med --- High 2140 2095
EXTERNAL STATIC PRESSURE (IN. W.C.)
0.3 0.4 0.5 0.6
1930 1835 1710 1590
1705 1640 1550 1465
1500 1450 1380 1315
1295 1265 1210 1150
2310 2215 2110 2000
2090 2000 1920 1825
1820 1780 1715 1635
1615 1585 1530 1465
2385 2305 2195 2085
2060 2010 1945 1865
1820 1780 1715 1635
1615 1585 1530 1465
2155 2055 1970 1855
1995 1910 1815 1710
1765 1710 1650 1570
1580 1540 1485 1410
2375 2305 2230 2110
2075 2030 1980 1910
1770 1735 1695 1640
1550 1525 1495 1445
2375 2285 2200 2105
2095 2040 1975 1895
2260 2180 2085 1975
2040 1975 1890 1810

GAS PIPING

WARNING
!
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
Never purge a gas line into a combustion chamber. Never
test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection
of leaks to check all connections.
WARNING
!
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
Use proper length of pipe to avoid stress on gas control
manifold and a gas leak.
WARNING
!
FIRE OR EXPLOSION HAZARD
Failure to protect gas valve inlet from water and debris
could result in death, personal injury and/or property
damage.
Gas valve inlet and/or inlet pipe must remain capped until
gas supply line is permanently installed to protect the valve
from moisture and debris. Also, install a sediment trap in the
gas supply piping at the inlet to the gas valve.
17
0.7 0.8 0.9 1.0
1470 1335 1025 835
1360 1210 945 785
1215 1005 855 670
995 865 745 540
1880 1725 1535 1355
1720 1565 1405 1255
1540 1415 1290 1160
1370 1255 1150 1040
1960 1825 1670 1465
1765 1660 1515 1325
1540 1415 1290 1160
1370 1255 1150 1040
1725 1600 1450 1280
1610 1490 1340 1175
1475 1370 1240 1100
1330 1220 1080 960
2000 1865 1725 1545
1830 1725 1590 1425
1570 1465 1345 1225
1370 1270 1175 1070
1995 1870 1730 1570
1790 1685 1550 1400
1865 1740 1605 1455
1705 1595 1480 1325