Setting and fastening the window – Pella Impervia 802Q0101 User Manual

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SETTING AND FASTENING THE WINDOW

A. Install and level sill spacers. Place 1" wide by 1/4" thick spacers

on the bottom of the window opening 1/4" from each side.

Spacers are also required at transition bars in multiple sash units.

Add shims as necessary to ensure the spacers are level. Once level,

attach spacers and shims to prevent movement.
Note: Improper placement of shims or spacers may result in

bowing the bottom of the window.

B. Remove plastic wrap and cardboard packaging from window.

DO NOT open the window until it is fully fastened.
Note: For best results, install the window with the sash

closed and locked with the shipping spacers in place.

TWO OR MORE PEOPLE WILL BE

REQUIRED FOR THE FOLLOWING

STEPS.

Note: If fins are to be installed to no fin

units, go to the Applying Installation Fin

instructions on the back before proceeding

to step C.

C. Insert the window from the exterior of the

building. Place the bottom of the window on the spacers

at the bottom of the opening, then tilt the top into

position. Center the window between the sides of the

opening to allow clearance for shimming and insert one

roofing nail in the first hole from the corner on each end

of the top nailing fin. These are used to hold the window

in place while shimming it plumb and square.

D. Plumb and square window. Place shims 1" from the

bottom and top of the window between the window and

the sides of the opening. Adjust the shims as required

to plumb and square the window in the opening. If the

frame height exceeds 53", place shims at the quarter

points of the window sides.
Note: DO NOT shim above the window or in the

space between the spacers at the bottom of the window.

DO NOT over shim.

E. Check the interior reveal. Make sure the

measurement from the interior face of the

window to the interior face of the wall is

equal at several points around the window.

F. Fasten the window to opening by driving 2”

galvanized roofing nails into each prepunched

hole in the nailing fin.

G. Check the window operation. Remove the plastic

spacers located between the bottom of the vent panel and

the frame sill. Open and close the window a few times to

check for proper operation. Close and lock the window.
Note: If there are any problems with the operations

of the window, recheck shim locations and adjust for

plumb and square.

Interior View

2 0 3 0 40

5 0 6 0 70

INCHES