29
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
WFM180453A***
(Medium
High
3.0
1,521
22
1,466
23
1,414
24
1,373
24
1,298
26
1,243 1,164 1,075
Med
2.5
1,160
29
1,160
29
1,132
29
1,121
30
1,082
31
1,042 997
925
Med-Lo
2.0
961
35
955
35
948
35
932
36
913
37
882
821
803
Low
1.5
781
43
785
42
781
43
773
43
761
44
745
716
668
WFM180703A***
(Medium)
High
3.0
1,422
36
1,352
38
1,307
40
1,197
43
1,157
45
1,092 1,075 983
Med
2.5
1,098
47
1,081
48
1,051
49
1,039
50
1,021
51
983
924
868
Med-Lo
2.0
919
56
913
57
892
58
847
-
829
-
818
792
728
Low
1.5
758
-
741
-
741
-
733
-
699
-
677
649
626
WFM180704B***
(Medium)
High
4.0
2,134
-
2,100
25
2,042
25
1,975
26
1,883
28
1,786 1,700 1,601
Med
3.5
1,668
31
1,663
31
1,656
31
1,645
32
1,616
32
1,549 1,492 1,391
Med-Lo
3.0
1,419
37
1,426
36
1,426
36
1,432
36
1,419
37
1,378 1,328 1,261
Low
2.5
1,134
46
1,145
45
1,166
44
1,171
44
1,160
45
1,144 1,111 1,071
WFM180903B***
(Medium)
High
3.0
1,607
41
1,572
42
1,547
43
1,498
45
1,448
46
1,390 1,302 1,222
Med
2.5
1,159
58
1,156
58
1,145
58
1,127
59
1,108
60
1,075 1,033 957
Med-Lo
2.0
938
-
916
-
916
-
900
-
889
-
865
829
785
Low
1.5
785
-
766
-
743
-
730
-
709
-
683
666
604
WFM180904B***
(Medium)
High
4.0
2,051
-
1,983
-
1,895
35
1,812
37
1,725
39
1,627 1,530 1,439
Med
3.5
1,736
38
1,708
39
1,652
40
1,611
41
1,540
43
1,475 1,394 1,307
Med-Lo
3.0
1,493
45
1,668
40
1,459
46
1,429
47
1,389
48
1,339 1,274 1,204
Low
2.5
1,200
56
1,185
56
1,180
56
1,173
57
1,158
58
1,125 1,125 1,080
WFM180905C***
(Medium)
High
5.0
2,290
-
2,229
-
2,155
-
2,047
-
1,960
-
1,837 1,712 1,584
Med
4.0
1,852
36
1,820
37
1,777
38
1,719
39
1,641
41
1,567 1,469 1,382
Med-Lo
3.5
1,615
41
1,592
42
1,556
43
1,516
44
1,470
45
1,405 1,346 1,235
Low
3.0
1,290
52
1,285
52
1,265
53
1,235
54
1,214
55
1,174 1,044 904
WFM181155C***
(Medium)
High
5.0
2,323
37
2.225
38
2,120
40
2,040
42
1,974
43
1,801 1,688 1,577
Med
4.0
1,858
46
1,847
46
1,799
47
1,744
49
1,674
51
1,577 1,493 1,399
Med-Lo
3.5
1,596
53
1,587
54
1,571
54
1,552
55
1,493
57
1,397 1,326 1,217
Low
3.0
1,291
-
1,272
-
1,261
-
1,257
-
1,205
-
1,168 1,118 1,060
WFM181405D***
(Medium)
High
5.0
2,469
42
2,389
43
2,300
45
2,223
47
2,131
49
2,027 1,902 1,786
Med
4.0
1,575
66
1,558
67
1,545
67
1,513
69
1,500
69
1,419 1,354 1,271
Med-Lo
3.5
1,402
-
1,380
-
1,343
-
1,319
-
1,296
-
1,245 1,183 1,106
Low
3.0
1,200
-
1,186
-
1,161
-
1,127
-
1,082
-
1,042 995
926