48
NOTES:
1. CFM in chart is without filters. Filters do not ship with this
furnace, but must be provided by the installer. If the furnace
requires 2 return filters, this chart assumes both filters are
installed.
2. All furnaces ship as high-speed cooling and medium-speed
heating. Installer must adjust blower cooling and heating
speed as needed.
3. For most jobs, about 400 CFM per ton when cooling is
desirable.
4. Installation is to be adjusted to obtain temperature rise within
the range specified on the rating plate.
5. The chart is for information only. For satisfactory operation,
external static pressure must not exceed value shown on
rating plate. The shaded area indicates ranges in excess of
maximum external static pressure allowed when heating. The
data for 0.6" W.C. to 0.8" W.C. is shown for air conditioning
purposes only.
6. The above chart is for U.S. furnaces installed at 0 to 2,000 ft
(609.6 m). At higher altitudes, a properly de-rated unit will
have approximately the same temperature rise at a particular
CFM, while the ESP at that CFM will be lower.
WFM195060E3BX
(MED-HI)
T1-Low
1.5
714
80
667
79
604
87
548
96
484
109 422
367
325
T2-Med-
Low
2.0
904
58
851
62
804
66
761
69
708
75
664
612
572
T3-Med
2.5
1,125
47
1,075
49
1,045
51
999
53
956
55
921
877
839
T4-Med-
High
3.0
1,312
40
1,271
42
1,228
43
1,202
44
1,165
45
1,127 1,087 1,044
T5-High
3.5
1,423
37
1,386
38
1,354
39
1,321
40
1,278
41
1,210 1,134 1,032
WFM195080E5CX
(MED-HI)
T1-Low
3.0
1,297
54
1,253
56
1,209
58
1,161
61
1,111
63
1,067 1,022 974
T2-Med-
Low
3.5
1,507
47
1,455
48
1,422
49
1,377
51
1,334
53
1,296 1,251 1,195
T3-Med
4.0
1,677
42
1,637
43
1,602
44
1,562
45
1,526
46
1,484 1,441 1,324
T4-Med-
High
4.0
1,879
37
1,842
38
1,800
39
1,762
40
1,700
41
1,566 1,437 1,319
T5-High
5.0
2,044
35
1,967
36
1,894
37
1,795
39
1,702
41
1,578 1,452 1,320
WFM195100E5DX
(MED-HI)
T1-Low
3.0
1,331
66
1,275
69
1,206
73
1,145
77
1,080
81
1,021 953
889
T2-Med-
Low
3.5
1,512
58
1,452
60
1,392
63
1,336
66
1,279
69
1,219 1,175 1,115
T3-Med
4.0
1,713
51
1,666
53
1,614
57
1,569
56
1,513
58
1,468 1,414 1,364
T4-Med-
High
4.0
1,892
46
1,845
48
1,802
49
1,752
50
1,707
52
1,656 1,614 1,577
T5-High
5.0
2,080
42
2,038
43
2,005
44
1,960
45
1,920
46
1,879 1,843 1,791
Blower Performance Data
CFM and Temperature Rise vs. External Static Pressure
Model—Heating
Speed as Shipped
Motor
Speed
Tons
AC at
0.5"
ESP
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 CFM CFM