AUTOMATIC OPPOSED BLADE DAMPERS (AOBD)
68-0246
6
Fig. 8. Installing multiple dampers and damper mounting tracks.
INSTALLING AOBD-BM (SEE FIG. 9)
IMPORTANT
Secure the AOBD-BM by inserting screws in the top
and bottom of the damper, not the sides of the
damper.
1.
Be sure the AOBD-BM is correctly sized to the air duct.
2.
Select an AOBD-BM location that is at least three feet
from the furnace plenum.
3.
Cut a 3 in. (76 mm) opening in the bottom or top of the
air duct at the location selected. Be sure the opening is
cut fully to the air duct seams on each side.
4.
Slide the AOBD-BM into the air duct.
5.
Secure the AOBD-BM mounting plate to the air duct
using the sheet metal screws provided.
INSTALLING INTERNAL OPPOSED BLADE DAMPERS (IOBD), SEE
FIG. 10
IMPORTANT
Secure the IOBD by inserting the mounting screws
through the front and back mounting tabs.
1.
Be sure the IOBD is correctly sized to the air duct.
2.
Select an IOBD location that is at least three feet from
the furnace plenum or near an air register.
3.
Slide the IOBD into the air duct. Be sure the electric
actuator is mounted toward the top of the air duct.
4.
Secure the IOBD to the air duct using the front and back
mounting tabs.
Fig. 9. Installing AOBD-BM (bottom mount).
3 IN. (76 mm)
DUCT OPENING
1
2
DAMPER MOTOR ACTUATOR AND DRIVE LINKAGE
MUST BE TOWARD TOP OF DUCT.
USE 1/4 IN. (6 mm) SHEET METAL SCREWS PROVIDED.
1
M2274B
2
DAMPER MOUNTING TRACKS INSTALLED INTO TOP
AND BOTTOM OF AIR DUCT.
3
3
3 IN. (76 mm)
DUCT OPENING
3 IN.
(76 mm)
DUCT
OPENING
1
1
2
2
USE 1/4 IN. (6 mm) SHEET METAL SCREWS PROVIDED.
M2276B
FOR LONGER AIR DUCTS, SECURE BACK OF DUCT
USING TWO SHEET METAL SCREWS PROVIDED.
