67
Table 22 —
Forward-Curved Fan Drive Centerline Distances in Inches (cont)
39M UNIT
SIZE
FAN MODEL
NO.
MOTOR
SIZE
BHF/BHR
DBF/DBR
THF/THR
UBF/UBR
FAN SHAFT DIAM. (in.)
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
CLASS 1
CLASS 2
25T
FC A20-15A
213T
30.8
33.2
23.7
26.6
27.2
30.0
25.2
27.9
1
11
/
16
1
11
/
16
215T
30.8
33.2
23.7
26.6
27.2
30.0
25.2
27.9
254T
30.3
32.8
23.5
26.4
27.0
29.8
24.9
27.6
256T
30.3
32.8
23.5
26.4
27.0
29.8
24.9
27.6
284T
29.9
32.4
23.5
26.3
26.8
29.7
24.6
27.4
286T
29.9
32.4
23.5
26.3
26.8
29.7
24.6
27.4
FC A20-18A
56
31.7
34.1
24.1
26.9
27.7
30.5
26.0
28.5
1
7
/
16
1
7
/
16
143T
31.7
34.1
24.1
26.9
27.7
30.5
26.0
28.5
145T
31.7
34.1
24.1
26.9
27.7
30.5
26.0
28.5
182T
31.2
33.6
23.8
26.7
27.4
30.2
25.5
28.2
184T
31.2
33.6
23.8
26.7
27.4
30.2
25.5
28.2
213T
30.8
33.2
23.7
26.6
27.2
30.0
25.2
27.9
215T
30.8
33.2
23.7
26.6
27.2
30.0
25.2
27.9
254T
30.3
32.8
23.5
26.4
27.0
29.8
24.9
27.6
256T
30.3
32.8
23.5
26.4
27.0
29.8
24.9
27.6
30W
FC A20-18H
215T
31.3
33.1
23.5
25.6
26.7
28.8
25.7
27.7
1
11
/
16
1
11
/
16
254T
30.7
32.5
23.2
25.4
26.4
28.5
25.2
27.2
256T
30.7
32.5
23.2
25.4
26.4
28.5
25.2
27.2
284T
30.2
32.1
23.0
25.2
26.1
28.3
24.9
26.9
286T
30.2
32.1
23.0
25.2
26.1
28.3
24.9
26.9
FC A20-20H
182T
31.7
33.5
23.7
25.9
27.0
29.1
26.6
28.5
1
11
/
16
1
11
/
16
184T
31.7
33.5
23.7
25.9
27.0
29.1
26.1
28.0
213T
31.3
33.1
23.5
25.6
26.7
28.8
26.1
28.0
215T
31.3
33.1
23.5
25.6
26.7
28.8
25.7
27.7
254T
30.7
32.5
23.2
25.4
26.4
28.5
25.7
27.7
256T
30.7
32.5
23.2
25.4
26.4
28.5
25.2
27.2
30T
FC A20-18H
213T
32.1
34.4
24.5
27.2
27.7
30.4
26.6
29.1
1
11
/
16
1
11
/
16
215T
32.1
34.4
24.5
27.2
27.7
30.4
26.6
29.1
254T
31.6
33.9
24.2
27.0
27.4
30.1
26.2
28.7
256T
31.6
33.9
24.2
27.0
27.4
30.1
26.2
28.7
284T
31.1
33.5
24.0
26.8
27.1
29.9
25.8
28.4
286T
31.1
33.5
24.0
26.8
27.1
29.9
25.8
28.4
FC A20-20H
182T
32.6
34.8
24.7
27.4
28.0
30.6
27.0
29.5
1
11
/
16
1
11
/
16
184T
32.6
34.8
24.7
27.4
28.0
30.6
27.0
29.5
213T
32.1
34.4
24.5
27.2
27.7
30.3
26.6
29.1
215T
32.1
34.4
24.5
27.2
27.7
30.3
26.6
29.1
254T
31.6
33.9
24.2
27.0
27.4
30.1
26.2
28.7
256T
31.6
33.9
24.2
27.0
27.4
30.1
26.2
28.7
35T
FC A20-20H
182T
32.6
34.8
24.7
27.4
28.0
30.6
27.0
29.5
1
11
/
16
1
11
/
16
184T
32.6
34.8
24.7
27.4
28.0
30.6
27.0
29.5
213T
32.1
34.4
24.5
27.2
27.7
30.3
26.6
29.1
215T
32.1
34.4
24.5
27.2
27.7
30.3
26.6
29.1
254T
31.6
33.9
24.2
27.0
27.4
30.1
26.2
28.7
256T
31.6
33.9
24.2
27.0
27.4
30.1
26.2
28.7
FC A22-22H
254T
32.8
35.3
27.0
29.7
29.0
31.8
27.0
29.7
N/A
2
3
/
16
256T
32.8
35.3
27.0
29.7
29.0
31.8
27.0
29.7
284T
32.4
34.9
26.8
29.4
28.8
31.7
26.8
29.4
286T
32.4
34.9
26.8
29.4
28.8
31.7
26.8
29.4
36W
FC A22-22H
254T
28.8
31.3
23.6
26.5
24.9
27.7
26.0
28.7
1
7
/
16
2
3
/
16
256T
28.8
31.3
23.6
26.5
24.9
27.7
26.0
28.7
284T
28.4
30.9
23.3
26.3
24.6
27.4
25.7
28.4
286T
28.4
30.9
23.3
26.3
24.6
27.4
25.7
28.4
FC A25-25H
182T
31.1
33.3
23.0
25.7
25.6
28.2
27.0
29.4
1
11
/
16
2
7
/
16
184T
31.1
33.3
23.0
25.7
25.6
28.2
27.0
29.4
213T
30.4
32.6
22.5
25.3
25.0
27.7
26.4
28.8
215T
30.4
32.6
22.5
25.3
25.0
27.7
26.4
28.8
254T
29.7
31.9
22.1
24.9
24.5
27.2
25.7
28.2
256T
29.7
31.9
22.1
24.9
24.5
27.2
25.7
28.2