38
Airflow Data
Table 7
Model
Number
Heating
Input
(Btuh)
Motor
Speed
External Static Pressure (Inches Water Column)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
CFM
Rise
CFM
Rise
CFM
Rise
CFM
Rise
CFM
Rise
CFM
Rise
CFM
Rise
CFM Rise
UPFLO
W FURNA
CES
RC054-24B
Bottom
Retur
n
54,000
High*
1550
30
1520
30
1485
31
1450
32
1410
33
1360
34
1300
35
1255
37
Med-High
1250
37
1220
38
1200
38
1170
39
1140
40
1105
42
1065
43
1010
46
Med-Low**
935
49
910
51
880
52
850
54
815
56
785
59
735
—
680
—
Low
720
—
690
—
655
—
620
—
585
—
550
—
520
—
485
—
RC054D-24B
Side
Retur
n
54,000
High*
1630
—
1595
—
1560
—
1525
30
1480
31
1430
32
1365
34
1320
35
Med-High
1315
35
1280
36
1260
37
1230
37
1200
38
1160
40
1120
41
1060
43
Med-Low**
980
47
955
48
925
50
890
52
855
54
825
56
775
59
715
—
Low
755
—
725
—
690
—
650
—
615
—
580
—
545
—
510
—
RC072D-35C
Bottom
Retur
n
72,000
High*
1895
—
1790
—
1720
36
1630
38
1550
40
1445
42
1330
46
1225
50
Med-High**
1775
35
1710
36
1650
37
1550
40
1470
42
1385
44
1290
48
1180
52
Med-Low
1255
49
1200
51
1155
53
1105
56
1050
58
1000
61
925
—
830
—
Low
1140
54
1100
56
1065
58
1025
60
980
63
930
—
870
—
805
—
RC072D-35C
Side
Retur
n
72,000
High*
1970
—
1865
—
1780
—
1695
36
1615
38
1505
41
1385
44
1275
48
Med-High**
1845
—
1780
—
1715
36
1615
38
1530
40
1440
43
1340
46
1230
50
Med-Low
1305
47
1250
49
1200
51
1150
53
1090
56
1040
59
965
64
865
—
Low
1185
52
1145
54
1110
55
1065
58
1020
60
965
64
905
—
840
—
RC072D-35C
Side +
Bottom or
2 Sides
72,000
High*
1990
—
1880
—
1805
—
1710
36
1630
38
1510
41
1400
44
1285
48
Med-High**
1865
—
1795
—
1735
35
1630
38
1545
40
1455
42
1355
45
1240
49
Med-Low
1320
46
1260
49
1215
50
1160
53
1105
56
1050
58
970
63
875
—
Low
1200
51
1155
53
1120
55
1075
57
1030
60
975
63
915
—
845
—
RC090D-35C
Bottom
Retur
n
90,000
High*
2155
36
2090
37
2015
38
1960
39
1910
40
1835
42
1755
44
1660
46
Med-High**
2015
38
1960
39
1920
40
1860
41
1805
42
1755
44
1695
45
1615
47
Med-Low
1705
45
1675
46
1640
47
1590
48
1555
49
1495
51
1435
53
1340
57
Low
1410
54
1390
55
1365
56
1330
58
1310
59
1275
60
1235
62
1210
63
RC090D-35C
Side
Retur
n
90,000
High*
2240
—
2175
35
2100
37
2040
38
1985
39
1910
40
1825
42
1725
44
Med-High**
2095
37
2040
38
2000
38
1935
40
1875
41
1825
42
1765
43
1680
46
Med-Low
1775
43
1740
44
1705
45
1655
46
1615
47
1555
49
1490
51
1335
57
Low
1465
52
1445
53
1420
54
1385
55
1360
56
1325
58
1285
60
1260
61
RC090D-35C
Side +
Bottom or
2 Sides
90,000
High*
2265
—
2195
35
2115
36
2060
37
2005
38
1930
40
1845
42
1745
44
Med-High**
2115
36
2060
37
2015
38
1955
39
1895
40
1845
42
1780
43
1695
45
Med-Low
1790
43
1760
44
1725
44
1670
46
1635
47
1570
49
1510
51
1410
54
Low
1480
52
1460
53
1435
53
1400
55
1375
56
1340
57
1300
59
1270
60
RC108D-45D
Bottom only
or 2 openings
108,000
High*
2135
43
2095
44
2040
45
1975
47
1910
48
1840
50
1735
53
1675
55
Med-High**
2000
46
1955
47
1900
48
1845
50
1800
51
1735
53
1665
55
1570
59
Med-Low
1665
55
1660
55
1625
57
1590
58
1530
60
1500
61
1415
65
1340
69
Low
1385
66
1360
68
1310
70
1300
—
1275
—
1250
—
1200
—
1150
—
RC108D-45D
Side
Retur
n
108,000
High*
2115
43
2075
44
2020
46
1955
47
1890
49
1822
50
1720
53
1660
55
Med-High**
1980
46
1935
48
1880
49
1830
50
1780
52
1720
53
1650
56
1555
59
Med-Low
1650
56
1645
56
1610
57
1575
58
1515
61
1485
62
1400
66
1330
69
Low
1370
67
1345
68
1300
—
1290
—
1260
—
1240
—
1190
—
1140
—
DO
WNFLO
W
FURNA
CES
RL090-35C
90,000
High*
1,955
39
1,905
40
1,835
42
1,795
43
1,730
44
1,620
47
1,545
50
1,450
53
Med-High**
1,845
42
1,790
43
1,750
44
1,680
46
1,515
51
1,540
50
1,475
52
1,410
54
Med-Low
1,320
58
1,290
59
1,250
61
1,215
63
1,180
65
1,120
—
1,050
—
970
—
Low
1,190
64
1,165
—
1,125
—
1,080
—
1,055
—
1,000
—
945
—
875
—
NOTES:
* Factory Set Cooling Speed
** Factory Set Heating Speed
1. Two openings are recommended for airflows above 1,600 CFM if filter(s) is(are) adjacent to furnace.
2. Temperature rises in the table are approximate. Actual temperature rises may vary.
3. Temperature rises shaded in gray are for reference only. These conditions are not recommended.
Table 7.
M4RC & M4RL
Blower Performance
Summary of Contents for M4RC-072D-35C
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