Air Delivery - - Cfm - Carrier 58CU0A Series Installation, Start-Up, Operating And Service And Maintenance Instructions

9. Set Airflow for Continuous Fan/Low Speed Cooling
Airflow The ECM blower motor can be adjusted for
continuous fan speeds different than heating or cooling fan
speed. See Table 11 - - Air Delivery - - CFM (With Filter).
Select the required continuous fan airflow from Fig. 42.
The continuous fan speed is also the switch setting for low
speed cooling when furnace is used with a 2- -speed
cooling unit. Adjust the continuous fan CFM to match the
airflow required for low speed cooling. Select the required
Size: 040C17--- 12
Clg Switches SW2--- 3
Clg Default: OFF
CF Switches SW3--- 3
Low --- Clg Default: OFF
OFF
OFF
OFF
Cooling Airflow
(SW2)
ON
ON
Low --- Cooling
ON
Airflow (SW3)
ON
CF Switches SW3--- 3
Cont. Fan Default: OFF
OFF
OFF
OFF
Continuous Fan
ON
Airflow
(SW3)
ON
ON
ON
Heating (SW1) Heating Airflow
060C17--- 16
Size:
Clg Switches SW2--- 3
Clg Default: OFF
CF Switches SW3--- 3
Low --- Clg Default: OFF
OFF
OFF
OFF
Cooling Airflow
(SW2)
ON
ON
Low --- Cooling
ON
Airflow (SW3)
ON
CF Switches SW3--- 3
Cont. Fan Default: OFF
OFF
OFF
OFF
Continuous Fan
ON
Airflow
(SW3)
ON
ON
ON
Heating (SW1)
Table 11 – Air Delivery - - CFM (With Filter)
(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
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
Heating Airflow
airflow from Fig. 42. For airflow at 400 CFM per ton, turn
Setup SW1- -5 ON (See Fig. 42) The airflow selected for
low speed cooling will also be the airflow used for
continuous fan.
The continuous fan speed can be further adjusted at the
thermostat using the "Comfort Fan" select function.
Changing the continuous fan speed at the thermostat
DOES NOT change the low speed cooling airflow
selected at the control board.
External Static Pressure (ESP)
0.1 0.2 0.3 0.4
1275 1310 1305 1315
1275 1310 1305 1315
530 545 545 535
715 705 730 730
870 910 925 925
1100 1090 1080 1110
1275 1310 1305 1315
1445 1480 1480 1480
1445 1480 1480 1480
1635 1605 1565 1525
530 545 545 535
530 545 545 535
715 705 730 730
870 910 925 925
1100 1090 1080 1110
1100 1090 1080 1110
1100 1090 1080 1110
1100 1090 1080 1110
760 765 790 790
External Static Pressure (ESP)
0.1 0.2 0.3 0.4
1460 1475 1500 1500
540 565 555 555
540 565 555 555
715 735 745 760
865 910 935 950
1120 1125 1130 1145
1275 1295 1315 1335
1460 1475 1500 1500
1460 1475 1500 1500
1620 1595 1565 1525
540 565 555 555
540 565 555 555
715 735 745 760
865 910 935 950
1120 1125 1130 1145
1275 1295 1315 1335
1460 1475 1500 1500
1460 1475 1500 1500
960 995 1015 1020
30
0.5 0.6 0.7 0.8 0.9
1310 1305 1305 1295 1290
1310 1305 1305 1295 1290
505 495 485 See Note 4
735 735 740 725 720
935 935 925 915 910
1120 1120 1110 1110 1100
1310 1305 1305 1295 1290
1475 1455 1415 1375 1335
1475 1455 1415 1375 1335
1490 1455 1415 1375 1335
505 495 485 See Note 4
505 495 485 See Note 4
735 735 740 725 720
935 935 925 915 910
1120 1120 1110 1110 1100
1120 1120 1110 1110 1100
1120 1120 1110 1110 1100
1120 1120 1110 1110 1100
800 800 800 790 775
0.5 0.6 0.7 0.8 0.9
1480 1440 1395 1355 1310
535 See Note 4
535 See Note 4
765 See Note 4
965 955 950 955 955
1160 1165 1165 1160 1150
1340 1345 1340 1335 1310
1480 1440 1395 1355 1310
1480 1440 1395 1355 1310
1480 1440 1395 1355 1310
535 See Note 4
535 See Note 4
765 See Note 4
965 955 950 955 955
1160 1165 1165 1160 1150
1340 1345 1340 1335 1310
1480 1440 1395 1355 1310
1480 1440 1395 1355 1310
1030 1050 1055 1060 1055
1.0
1270
1270
695
900
1095
1270
1295
1295
1295
695
900
1095
1095
1095
1095
755
1.0
1255
945
1150
1255
1255
1255
1255
945
1150
1255
1255
1255
1045