AIR DELIVERY - CFM (Bottom Return With Filter)*
Unit
Operating Mode
CFM Airflow
External Static
External Static Pressure (ESP)
Size
Setting
Pressure Range*
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
036070
AIRFLOW (CFM)
†† Low Heat
735 (
615
)†
0-0.50
735
735
735
735
725
High Heat
1180 (
1060
)†
0-1.0
1160 1165 1175 1180 1180 1180 1180 1180 1180 1175
†† 1-1/2-Ton Cooling
525
0-0.50‡
525
525
525
525
510
†† 2-Ton A/C Cooling
700
0-0.50‡
700
700
700
695
685
2-1/2-Ton A/C Cooling
875
0-1.0‡
875
875
875
875
875
875
865
855
845
840
3-Ton A/C Cooling
1050
0-1.0‡
1050 1050 1050 1050 1050 1050 1050 1050 1045 1035
3-1/2-Ton A/C Cooling
1225
0-1.0
1205 1215 1225 1225 1225 1225 1225 1225 1225 1210
Maximum
1400
0-1.0
1395 1400 1400 1400 1400 1400 1400 1385 1360 1310
048090
Low Heat
985 (
825
)†
0-1.0
950
970
985
985
985
985
985
985
985
980
High Heat
1210 (
1090
)†
0-1.0
1190 1205 1210 1210 1210 1210 1210 1210 1210 1200
†† 1-1/2-Ton A/C Cooling
525
0-0.50‡
525
525
525
525
500
†† 2-Ton A/C Cooling
700
0-0.50‡
690
695
700
700
690
2-1/2-Ton A/C Cooling
875
0-1.0‡
830
855
875
875
875
875
870
865
850
820
3-Ton A/C Cooling
1050
0-1.0‡
1005 1025 1040 1050 1050 1050 1050 1050 1050 1050
3-1/2-Ton A/C Cooling
1225
0-1.0‡
1205 1220 1215 1225 1225 1225 1225 1225 1225 1220
4-Ton A/C Cooling
1400
0-1.0
1370 1385 1395 1400 1400 1400 1400 1400 1400 1380
Maximum
1600
0-1.0
1565 1580 1585 1595 1600 1600 1560 1520 1480 1430
060110***
Low Heat
1320 (
1110
)†
0-1.0
1275 1295 1315 1320 1320 1320 1320 1320 1320 1315
High Heat
1475 (
1330
)†
0-1.0
1460 1465 1475 1475 1475 1475 1475 1475 1465 1465
†† 2-Ton A/C Cooling
700
0-0.50‡
700
700
700
685
660
†† 2-1/2-Ton A/C Cooling
875
0-0.50‡
860
875
865
855
840
†† 3-Ton A/C Cooling
1050
0-0.50‡
1050 1050 1045 1050 1050
3-1/2-Ton A/C Cooling
1225
0-1.0‡
1185 1195 1215 1225 1225 1225 1225 1225 1225 1225
4-Ton A/C Cooling
1400
0-1.0‡
1385 1395 1400 1400 1400 1400 1400 1400 1400 1400
5-Ton A/C Cooling
1750
0-1.0‡
1710 1730 1745 1745 1750 1750 1750 1750 1745 1740
6-Ton A/C Cooling
2100
0-1.0
2090 2100 2100 2100 2095 2085 2065 2045 2020 1990
Maximum
2200
0-1.0
2200 2200 2200 2190 2185 2175 2155 2130 2085 2015
066135
Low Heat
1700 (
1430
)†
0-1.0
1700 1700 1700 1700 1700 1695 1700 1695 1685 1670
High Heat
1915 (
1725
)†
0-1.0
1900 1905 1915 1915 1915 1915 1915 1915 1915 1915
†† 2-Ton A/C Cooling
700
0-0.50‡
700
700
700
700
665
†† 2-1/2-Ton A/C Cooling
875
0-0.50‡
870
870
865
865
865
†† 3-Ton A/C Cooling
1050
0-0.50‡
1010 1030 1050 1050 1050
3-1/2-Ton A/C Cooling
1225
0-1.0‡
1155 1180 1200 1210 1220 1225 1225 1225 1225 1225
4-Ton A/C Cooling
1400
0-1.0‡
1395 1400 1400 1400 1400 1400 1400 1390 1375 1355
5-Ton A/C Cooling
1750
0-1.0‡
1740 1750 1750 1750 1735 1740 1735 1730 1715 1700
6-Ton A/C Cooling
2100
0-1.0
2075 2085 2090 2100 2100 2100 2090 2080 2055 2025
Maximum
2200
0-1.0
2180 2195 2200 2200 2200 2200 2185 2165 2140 2095
066155
Low Heat
1715 (
1440
)†
0-1.0
1715 1715 1715 1715 1715 1705 1710 1705 1705 1695
High Heat
1970 (
1775
)†
0-1.0
1955 1965 1965 1970 1970 1970 1970 1970 1970 1960
†† 2-Ton A/C Cooling
700
0-0.50‡
700
700
700
700
680
†† 2-1/2-Ton A/C Cooling
875
0-0.50‡
865
875
875
865
865
†† 3-Ton A/C Cooling
1050
0-0.50‡
1015 1020 1035 1045 1050
3-1/2-Ton A/C Cooling
1225
0-1.0‡
1160 1185 1215 1225 1225 1225 1225 1225 1225 1225
4-Ton A/C Cooling
1400
0-1.0‡
1385 1400 1400 1400 1400 1400 1395 1395 1380 1360
5-Ton A/C Cooling
1750
0-1.0‡
1745 1750 1750 1750 1745 1740 1745 1745 1740 1735
6-Ton A/C Cooling
2100
0-1.0
2055 2070 2080 2085 2095 2100 2100 2100 2090 2065
Maximum
2200
0-1.0
2175 2190 2200 2200 2200 2200 2200 2200 2180 2160
*
Actual external static pressure (ESP) can be determined by using the fan laws (CFM
2
proportional to ESP); such as,
a system with 1180 CFM at 0.5 ESP would operate at cooling airflow of 1050 CFM at 0.4 ESP and low-heating airflow
of 735 CFM at 0.19 ESP.
†
"Comfort mode" airflow values are shown in
parenthesis
. "Comfort mode" airflow is selected when the low-heat rise
adjustment switch (SW1-3) is OFF and the comfort/efficiency switch (SW1-4) is ON. Furnaces are shipped in this
configuration.
‡
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.
***
All airflows on 110 size furnace are 5% less on side return only installations.
-8-
Summary of Contents for 315AAV
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