Cover Removal And Mounting Tab/Terminal Block Access; Determining Rotation Direction (Cw Or Ccw) - Honeywell Excel 10 W7751H Installation Instructions Manual

60
CW
Fig. 4. Mounting W7751H to VAV box damper housing
when actuator is not parallel to VAV box damper housing.
Before mounting the W7751H onto the VAV box damper shaft,
determine the following:
1. The damper shaft diameter, 3/8 to 1/2 in. (10 to 13 mm).
2. If the length of the VAV box damper shaft is less than
1-3/8 in. (35 mm), use the Short Shaft Adapter Kit (not
included), part no. 4074EVK.
CW
60
CCW
45
45
PULL TOP OF
COVER OUT,
THEN DOWN,
FOR REMOVAL
Fig. 3. Cover removal and mounting tab/terminal block access.
1MM (1/32 IN.)
1MM
(1/32 IN.)
M20884
EXCEL 10 W7751H SMART VAV ACTUATOR
60
CW
45
CIRCUIT BOARD
TERMINAL BLOCKS
3. The direction the damper shaft rotates to open the
damper (CW or CCW), see Fig. 5.
4. The damper opening angle (45, 60, or 90 degrees).
AIR
FLOW
AIR
FLOW
M2067B
Fig. 5. Determining rotation direction (CW or CCW)
If damper shaft diameter is 3/8 inch (10 mm) round or square,
use part 201391 Shaft Adapter (shipped with the W7751H
Smart VAV Actuator). Ensure it is placed opposite set screws.
See Fig. 6. The adapter centers a 3/8 in. (10 mm) shaft in the
hub. Failure to use the adapter on a 3/8 in. (10 mm) shaft
causes the mounting tab to loosen. A 1/2 in. (13 mm) shaft
does not require the use of the adapter.
3
CW
60
CCW
45
MOUNTING TAB
M10000
TYPE A DAMPER
CW TO OPEN, CCW TO CLOSE
TYPE B DAMPER
CCW TO OPEN, CW TO CLOSE
for damper opening.
95-7553—04