Twin City DWDI Nested Inlet Vanes - ES-494 User Manual
Page 2
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
AIR
FLO
W
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