Instruction Manual

BLADE POSITION FOR
CW (CLOCKWISE) FAN
BLADE POSITION FOR
CW (CLOCKWISE) FAN
BLADE POSITION FOR CCW
(COUNTERCLOCKWISE) FAN
BLADE POSITION FOR
CCW (COUNTER-
CLOCKWISE) FAN
VIEW FROM DRIVEN SIDE
VIEW FROM DRIVE SIDE
AIRFLOW
AIRFLO
W
DRIVEN
SIDE
DRIVE
SIDE
8A
11
15
8
9
4
16
19
17
16
12
13
14
3
7
14
7
13
11
4
9
15
2A
17
2
21
20
22
16
5
23
1
19
18
8
10
6
14
13
12
8A
10
12
12
13
14
23
5
6
2 Twin City Engineering Supplement ES-494
Figure 2. Nested Inlet Vane Control System for DWDI BC, BAF Fans
NOTES:
1. Items 8, 9, 10, and 11 are used for fan sizes 245 thru 890.
2. Item 8A is used for fan sizes 165 thru 222.
3. Item 2 is used for nonrotatable housing design and is to be welded to the fan housing frame.
4. Item 2A is used for rotatable housing desing and is to be welded on the fan housing.
5. Bearings are to be mounted on the outside of the fan housing.
6. Items 7 and 14 are used for fan sizes 600 and larger.
7. Measure threaded linkage rod length to fit.
ITEM DESCRIPTION
01 VANE HANDLE
02 QUADRANT
03 CONTROL ROD
04 CONTROL RING
05 CONTROL LINKAGE BAR
06 THREADED LINKAGE ROD
07 THREADED LINKAGE ROD HSG.
08 CONTROL RING CLIP
09 UNISTRUT
10 UNISTRUT CLAMPING NUT
11 HEX NUT
12 BALL JOINT
13 HEX NUT
14 HEX NUT
15 HEX NUT
16 HEX NUT
17 HEX BOLT
18 NEX NUT
19 FLANGE BEARING
20 SPRING LOCK WASHER
21 FLAT WASHER
22 HEX HEAD SCREW
23 SQUARE HEAD SETSCREW
24 SQUARE HEAD SETSCREW