Twin City Fan & Blower Installation and Maintenance Manual: IM-494
3
Figure 3. Control Ring Position
NOTES:
1. For POS. R:
CW fan handle down is open.
CCW fan handle down is closed.
For POS L:
CW fan handle down is closed.
CCW fan handle down is open.
2. Handle location on inlet side of fan.
3. Reference of AC-13460.
DBD
TAU
BAU
THD
TAD
UBD
BHD
A
A
R
R
R
R
L
R
L
R
L
L
L
9.75
PIVOT
1.00
45
°
45
°
HORIZ.
CENTER-
LINE
HOUSING VER
T.
CENTERLIN
E
Figure 4. Nested Inlet Vane Handle Location For Non-rotatable Fans
NOTES:
1. For POS. R:
CW fan handle down is open.
CCW fan handle down is closed.
For POS L:
CW fan handle down is closed.
CCW fan handle down is open.
2. All dimensions are references to AC-13459.
NESTED INLET VANE
DIMENSION “A”
FAN
HANDLE LOCATION
SWSI
DWDI
SIZE DBD TAD THD TAU UBD BAU BHD
CL I
CL II
CL III
CL IV
CL I
CL II
CL III
BCS
17 BCS
22,26
165 L L R R R R L 12.88
12.88
12.88
12.88 12.88 12.88 12.88
182 L L R R R R L 13.75
13.75
14.25
14.75 13.75 13.75 14.25
200 L L R R R R L 14.75
14.75
15.25
15.75 14.75 14.75 15.25
222 L L R R R R L 16.38
16.38
16.88
16.88 16.38 16.38 16.88
245 L R R R R L L 17.50
17.50
18.00
18.00 17.50 17.50 18.00
270
L
R
R
R
R
L
L
18.75
18.75
19.25
19.75
18.75
18.75
19.50
300 L R R R R L L 21.25
21.25
21.75
21.75 21.25 21.25 22.00
330 R R R R R L L 22.75
22.75
23.25
23.50 22.75 23.00 23.50
365 R R R R R L L 24.75
24.75
25.50
25.50 24.75 25.00 25.50
402 R R R R L L L 27.00
27.00
27.25
27.25 27.00 27.25 27.50
445
R
R
R
R
L
L
L
29.00
29.00
29.25
29.75
29.25
29.25
29.50
490
R
R
R
R
L
L
L
31.50
31.75
31.75
32.50
31.75
31.75
32.00
542 R R R R L L L 34.25
34.50
34.50
35.25 34.50 34.75 34.75
600 R R R R L L L 37.50
37.50
38.25
38.25 37.50 37.75 38.50
660 R R R R L L L 41.00
41.00
41.25
41.75 41.25 41.25 41.50
730 R R R R L L L 45.00
45.25
45.50
46.00 45.25 45.50 45.75
807
R
R
R
R
L
L
L
48.75
49.00
49.75
50.00
49.00
49.25
50.00
890
R
R
R
R
L
L
L
54.50
54.50
55.25
55.50
54.75
55.00
55.50
982
R
R
R
R
L
L
L
62.25
62.50
58.50
58.75
62.50
62.75
58.75
OPPOSITE DRIVE SIDE SHOWN
