Carrier 59MN7B Installation, Start-Up, Operating And Service And Maintenance Instructions page 31

Cooling
Unit Size: 100C21-22
Clg Switches SW2-3
Clg Default: OFF
CF Switches SW3-3
Low-Clg Default: OFF
OFF
OFF
OFF
Cooling Airflow
ON
(SW2)
ON
Low-Cooling Airflow
(SW3)
ON
ON
CF Switches SW3-3
Cont. Fan Default: OFF
OFF
OFF
OFF
Continuous Fan
ON
Airflow (SW3)
ON
ON
ON
Maximum Heat Airflow
Intermediate Heat Airflow
Heating (SW1)
Unit Size: 120C24-22
Clg Switches SW2-3
Clg Default: OFF
CF Switches SW3-3
Low-Clg Default: OFF
OFF
OFF
OFF
Cooling Airflow
ON
(SW2)
Low-Cooling Airflow ON
(SW3)
ON
ON
CF Switches SW3-3
Cont. Fan Default: OFF
OFF
OFF
OFF
Continuous Fan
ON
Airflow (SW3)
ON
ON
ON
Maximum Heat Airflow
Intermediate Heat Airflow
Heating (SW1)
1. Nominal 350 CFM/ton cooling airflow is delivered with SW1--5 and SW4--3 set to OFF.
Set SW1--5 to ON for nominal 400 CFM/ton (+15% airflow).
Set SW4--3 to ON for nominal 325 CFM/ton (--7% airflow).
Set both SW1--5 and SW4--3 to ON for nominal 370 CFM/ton (+7% airflow).
This applies to Cooling and Low--Cooling airflow, but does not affect continuous fan airflow.
The above adjustments in airflow are subject to motor horsepower range/capacity.
2. Maximum cooling airflow is achieved when switches SW2--1, SW2--2, SW2--3 and SW1--5 are set to ON, and SW4--3 is set to OFF.
3. All heating CFM's are when low/medium 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 airflow on 21" casing size furnaces are 5% less on side return only installations.
6. Return air above 1800 CFM on 24.5" casing sizes requires two sides, one side and bottom or bottom only, to allow sufficient airflow to the furnace.
4
and Heating Air Delivery - - CFM (Bottom Return
(SW1-5 and SW4-3 set to OFF, except as indicated. See notes 1 and 2.)
Clg/CF Switch settings
SW2-2 SW2-1
OFF OFF
SW3-2 SW3-1
OFF OFF
OFF ON
ON OFF
ON ON
OFF OFF
OFF ON
ON OFF
ON ON
2
Maximum Clg Airflow
SW3-2 SW3-1
OFF OFF
OFF ON
ON OFF
ON ON
OFF OFF
OFF ON
ON OFF
ON ON
3
3
3
Minimum Heat Airflow
Clg/CF Switch settings
SW2-2 SW2-1
OFF OFF
SW3-2 SW3-1
OFF OFF
OFF ON
ON OFF
ON ON
OFF OFF
OFF ON
ON OFF
ON ON
2
Maximum Clg Airflow
SW3-2 SW3-1
OFF OFF
OFF ON
ON OFF
ON ON
OFF OFF
OFF ON
ON OFF
ON ON
3
3
3
Minimum Heat Airflow
5
External Static Pressure (ESP)
0.1 0.2 0.3 0.4
1820 1825 1840 1845
750 740 745 730
750 740 745 730
900 900 915 910
1070 1075 1095 1095
1280 1285 1305 1305
1440 1445 1465 1465
1820 1825 1840 1845
2135 2140 2140 2135
2160 2165 2175 2170
750 740 745 730
750 740 745 730
900 900 915 910
1070 1075 1095 1095
1280 1285 1305 1305
1440 1445 1465 1465
1440 1445 1465 1465
1440 1445 1465 1465
1570 1575 1595 1595
950 955 965 975
755 745 750 735
External Static Pressure (ESP)
0.1 0.2 0.3 0.4
1850 1855 1860 1855
930 925 915 900
765 745 740 705
930 925 915 900
1095 1100 1110 1105
1265 1255 1265 1280
1465 1455 1470 1465
1850 1855 1860 1855
2200 2200 2200 2190
2200 2200 2200 2190
930 925 915 900
765 745 740 705
930 925 915 900
1095 1100 1110 1105
1265 1255 1265 1280
1465 1455 1470 1465
1465 1455 1470 1465
1465 1455 1470 1465
1815 1820 1825 1820
1095 1100 1110 1105
905 900 890 875
31
With Filter) continued
0.5 0.6 0.7 0.8
1840 1835 1825 1805
715 See note 4
715 See note 4
905 See note 4
1090 1085 1095 1080
1310 1305 1295 1300
1470 1485 1480 1485
1840 1835 1825 1805
2140 2130 2115 2100
2160 2150 2135 2120
715 See note 4
715 See note 4
905 See note 4
1090 1085 1095 1080
1310 1305 1295 1300
1470 1485 1480 1485
1470 1485 1480 1485
1470 1485 1480 1485
1600 1605 1600 1600
970 See note 4
720 See note 4
0.5 0.6 0.7 0.8
1850 1830 1805 1775
885 See note 4
680 See note 4
885 See note 4
1085 See note 4
1275 1285 1270 1260
1465 1470 1455 1450
1850 1830 1805 1775
2185 2170 2145 2085
2185 2170 2145 2085
885 See note 4
680 See note 4
885 See note 4
1085 See note 4
1275 1285 1270 1260
1465 1470 1455 1450
1465 1470 1455 1450
1465 1470 1455 1450
1815 1795 1775 1745
1085 See note 4
855 See note 4
0.9 1.0
1780 1770
1065 1070
1290 1285
1475 1460
1780 1770
2070 2015
2065 2020
1065 1070
1290 1285
1475 1460
1475 1460
1475 1460
1590 1575
0.9 1.0
1750 1730
1250 1230
1435 1415
1750 1730
1990 1890
1990 1890
1250 1230
1435 1415
1435 1415
1435 1415
1720 1700