Pella Replacement Window 80YV0102 - Manual (Page 11)

Note: It may be necessary to squeeze the end of the tube with pliers to be able to
insert into the space between the window frame and the rough opening.
B. Check the window operation (vent units only) by
opening and closing the window.
Note: If the window does not operate correctly,
check to make sure it is still plumb, level, square,
and the jambs are not bowed. If adjustments are
required, remove the foam with a serrated knife.
Adjust the shims and reapply the insulating foam
sealant.
5
INTERIOR SEAL
Caution: Ensure use of low pressure polyurethane window and door insulating foams
and strictly follow the foam manufacturer’s recommendations for application. Use of
high pressure foams or improper application of the foam may cause the window frame
to bow and hinder operation.
A. Apply insulating foam sealant. From the interior, insert
the nozzle of the applicator approximately 1" deep into
the space between the window and the rough opening
and apply a 1" deep bead of foam. This will allow room
for expansion of the foam and will minimize squeeze
out. Apply sealant across interior surface of shims
to create a continuous seal. For windows with jamb
extensions installed, ensure the foam is placed between
the window frame and the rough opening, not between
the jamb extension and the rough opening. Follow
foam manufacturer's instructions.
C. Insert jamb hole plugs (provided) into each screw hole for single-hung and double-hung
units.
Interior Finish or Trim:
The space between the new window and the existing window’s frame will need to be covered
with trim. There are many ways to accomplish this and each case can be unique. How this is
done will be the decision of the homeowner or window
installer. A few possibilities include using cove,
quarter round, or a stop moulding.
SINGLE-
HUNG
and
DOUBLE-
HUNG
5A
Jamb plug
5C
Installation
screw
hole
6
EXTERIOR SEAL
A. Insert backer rod into the space
around the window at the head and
jambs. This should provide at least
3/8" clearance between the backer rod
and the exterior face of the window.
Note: Backer rod adds shape and
depth for the sealant line.
B. Place a bead of sealant at the jambs
and head between the existing
window frame and the replacement
window frame.
EXTERIOR
6A
6B
S. Fasten the window in the opening by driving the 2-1/2" long screws through each pre-
drilled hole in the window frame, through the shims and into the rough opening.
Note: Single-hung: Raise the lower sash to access lower installation holes. Double-
hung: Lower the top sash to access the upper installation holes and raise the lower
sash to access the lower installation holes. Tilt the lower sash to the interior to access
the installation holes at the checkrail. Assistance from the interior is recommended for
this step.