Pella Bay and Bow window with seat board 80AT0102 - Manual (Page 5)

HEAD BOARD
SEAT BOARD
18" PROJECTION
MAXIMUM
DASHED LINES INDICATE
POSSIBLE CONSTRUCTION
FOR GABLE ROOF
MINIMUM
10-1/2”
A. Tighten the top hex nut on both cable ends. Using a 3/16" wrench or socket, hold the
cable end in position while tightening the top hex nut with a 1/2" wrench or socket. This
will keep the cable from twisting as the hex nuts are tightened with a wrench.
4E
4
FASTeNING THe WINDOW
3
CABLe CLAMP INSTALLATION (continued)
C. When the bay/bow unit is being installed, thread the threaded end of the cable through
the "T" nut, down the length of the bay/bow unit, and out the drilled hole in the seat
board. Place a washer and two hex nuts on each cable end.
Note: The interior mullion cover can easily be removed for this purpose and must be
reinstalled when installation is complete.
HEADER MOUNT OF CABLE CLAMPS
This method may only be used if the projection of the bay/bow is 18" or less.
Use the Cross Bracing method if the projection of the bay/bow is more than 18".
Note: Be sure that the cable clamps are secured to a
solid structural member - header, sill plates or wall
stud. If the structural member or cable clamps are
not securely attached, they may loosen during or
after installation causing the bay/bow unit to sag.
A. Install the cable clamps. Drive the #12 x 3-1/4"
square screws part way into the mounting surface
using a #3 square drive bit.
B. Secure the seat board and head board by using 10d finishing nails or 2-1/2" long
screws on 16" centers; nail or screw through the head board, seat board and shims
into the rough opening.
C. Remove the temporary bracing. Check the window for level, plumb, sash reveal
and operation. Readjust, if needed.
Note: Be sure to use the temporary support when readjusting
the nuts.
D. Tighten the locking (bottom) nut on both cable ends and
remove the temporary support once the final position is found.
DO NOT cut the threaded end off the cable as this will prevent
future adjustment should it be needed.
E. Installation of knee braces is recommended to help support
the weight of the bay/bow unit. Weight calculations must take
into account the weight of the items that may be placed on the
seat board of the bay/bow unit. Knee braces are required if the
upper roof/framing members cannot support 1,300 lbs. or more.
B. Run the cable up through the bottom of the cable
clamp. Hold the cable up tight above the clamp and
drive the two center clamp screws all the way in to
lock the cable in place. Drive in the remaining #12
x 3-1/4" square screws all the way.
Note: Make sure all 4 screws are driven in at
maximum torque. Additional tensioning may be
done with the nuts on the opposite end of the cable
at the bottom of the window.