Carrier 58CTW - Page 19

19
Table 4 -- Air Delivery -- CFM (With Filter)* (CONTINUED)
Unit Size
Cooling Switch Settings External Static Pressure (ESP)
SW2-8 SW2-7 SW2-6 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
110-22/
066110
OFF OFF OFF 2055 2000 1950 1900 1840 1790 1740 1675 1625 1565
OFF OFF ON 855 755 See note 4
OFF ON OFF 1060 985 875 800 700 See note 4
OFF ON ON 1250 1180 1095 1025 925 860 775 715 See note 4
ON OFF OFF 1445 1380 1320 1235 1175 1100 1035 955 900 825
ON OFF ON 1685 1630 1560 1505 1445 1375 1320 1265 1195 1140
ON ON OFF 2055 2000 1950 1900 1840 1790 1740 1675 1625 1565
ON ON ON 2465 2415 2365 2305 2230 2140 2045 1925 1805 1655
Maximum Clg Airflow
2
2465 2415 2365 2305 2230 2140 2045 1925 1805 1655
High Heat Airflow
3
2105 2055 2005 1955 1895 1850 1795 1735 1665 1580
Low Heat Airflow
3
1740 1685 1620 1560 1505 1440 1385 1325 1260 1205
Unit Size
Cooling Switch Settings External Static Pressure (ESP)
SW2-8 SW2-7 SW2-6 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
135-22/
066135
OFF OFF OFF 2040 1985 1930 1880 1830 1775 1715 1660 1595 1510
OFF OFF ON 850 740 See note 4
OFF ON OFF 1040 960 865 755 See note 4
OFF ON ON 1245 1170 1080 1005 920 835 750 See note 4
ON OFF OFF 1450 1385 1305 1245 1180 1085 1015 935 880 805
ON OFF ON 1670 1605 1540 1480 1425 1350 1280 1220 1135 1070
ON ON OFF 2040 1985 1930 1880 1830 1775 1715 1660 1595 1510
ON ON ON 2520 2455 2405 2350 2290 2195 2090 1965 1815 1615
Maximum Clg Airflow
2
2520 2455 2405 2350 2290 2195 2090 1965 1815 1615
High Heat Airflow
3
2260 2205 2150 2100 2045 1985 1925 1855 1745 1600
Low Heat Airflow
3
2005 1950 1895 1845 1790 1735 1675 1620 1550 1475
1. Nominal 350 CFM/ton cooling airflow is delivered with SW1-5 and SW2-2 set to OFF.
Set both SW1-5 and SW2-2 to ON for +7% airflow (nominal 370 CFM/ton).
Set SW1-5 to ON and SW2-2 to OFF for +15% airflow (nominal 400 CFM/ton).
Set SW2-2 to ON and SW1-5 to OFF for -7% airflow (nominal 325 CFM/ton).
2. Maximum cooling airflow is achieved when switches SW2-6, SW2-7, SW2-8 and SW1-5 are set to ON, and SW2-2 is set to OFF.
3. All heating CFM's are when low heat rise adjustment switch (SW1-3) and comfort/efficiency adjustment switch (SW1-4) are both set to
OFF
4. Ductwork must be sized for high-heating CFM within the operational range of ESP. Operation within the blank areas of the chart is not
recommended because high-heat operation will be above 1.0 ESP.
5. All airflows on 21" casing size furnaces are 5% less on side return only installations.
6. Side returns for 24.5" casing sizes require two sides, or side and bottom, to allow sufficient airflow at the return of the furnace.