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D.  Lower the top sash and cut the balance cords allowing the 

balance weights to fall into the weight pocket. Remove the 

top sash.

E.  Remove the balance cord pulleys. Unscrew and remove the 

balance cord pulleys. If they cannot be removed easily, drive 

them into the jamb using a hammer.

F. 

If desired, insulate the weight chamber

 by filling it with low 

pressure window and door insulating foam.

1E

2

PREPARE THE OPENING

Blind stop

Flashing 

Tape

2A

2B

2D

Sill Adapter

A. 

Apply one piece of sill flashing tape

 to the sill of the 

existing window. Cut the tape the same length as the 

width of the existing window sill. Place one side of the tape 

against the vertical leg of the stool, and work the tape into 

the corner before applying to the sill. Press down firmly. 

DO NOT allow the flashing tape to extend past the blind 

stops.

B. 

Check to ensure the existing sill is level and not bowed 

(humped) upward.

 If necessary, place shims on the bottom 

of the window opening 1/2" from each side. Shim sill 

only at the jambs. Once level, attach shims to prevent 

movement.

Note: Improper placement of shims may result in bowed 

(humped) sill.

C. 

Remove plastic wrap, cardboard packaging and sill 

packaging board from window.

 DO NOT cut the checkrail 

bands or remove plastic shipping spacers located between 

the window sash and frame. The shipping spacers will help 

keep the window square during installation. 

Note: If screens, grilles or hardware are removed from 

the window at this time, label them and store them in 

a protected area.

D. 

Remove the sill adapter for existing sills that slope 

less than 13 degrees.

 For existing sills that slope 

13 degrees or more, fully extend the adjustable sill 

adapter.

Note: Usage of the sill adapter with existing sill angles 

less than 13 degrees may cause bowed (humped) sills, 

resulting in screen fit issues. 

E. 

Test fit the window.

 The window should be approximately 1/2" smaller than the 

opening in both width and height. Check to ensure the window rests against the 

exterior blind stops and will make contact with the sealant applied in steps 3 A, B and 

C. If the sill adpater is present, verify it is extended to meet the existing sill. Verify that 

the installation screws will fasten into solid wood. If not, repair the existing frame to 

insure there is solid wood at installation screw locations.

Содержание 808F0105

Страница 1: ...0 ft Pella SmartFlash foil backed butyl window and door flashing tape or equivalent High quality exterior grade polyurethane or silicone sealant 1 tube per window Great Stuff Window and Door Insulating Foam Sealant by the Dow Chemical Company or equivalent low pressure polyurethane window and door foam DO NOT use high pressure or latex foams Tape measure Level Hammer Utility knife Pry bar Sealant ...

Страница 2: ...opening and window dimensions prior to removing the existing window sash A Score paint or varnish along interior sash stops with a sharp utility knife Remove the interior sash stops at jambs sides and head top using a putty knife and pry bar B Cut the balance cords on the bottom sash and lift out the sash Allow weights to fall to the bottom of the weight pocket 1 DOUBLE HUNG SASH REMOVAL C Remove ...

Страница 3: ...ote Improper placement of shims may result in bowed humped sill C Remove plastic wrap cardboard packaging and sill packaging board from window DO NOT cut the checkrail bands or remove plastic shipping spacers located between the window sash and frame The shipping spacers will help keep the window square during installation Note If screens grilles or hardware are removed from the window at this tim...

Страница 4: ...of the window in first and tilt the top into place Make sure the window is centered in the opening and is pressed firmly against the exterior blind stops E Place a shim at each of the top corners in line with the pre punched holes and partially insert 2 1 2 screws provided This will hold the window in place while shimming it plumb and square Trim shims back so they recessed back 1 4 1 2 from the i...

Страница 5: ... hole I Adjust the screw jacks if required With a flat blade screwdriver turn clockwise to move the frame toward the sash Architect Series Units The jamb jack holes are located in the interior balance channel near the checkrail the lower sash must be tilted in to adjust the jamb jack Note If the frame and sash are too tight and are not adjustable using the jamb jacks the window is over shimmed J F...

Страница 6: ...ing 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 the interior surface of the shims to create a continuous seal Follow foam manufacturer s instructions Note It may be necessary to squeeze the end of the tube with pliers to be able to insert into the space between the new and existing window frame DO NOT completely ...

Страница 7: ...ed Warranty On casement and awnings it is optional to paint stain or finish the vertical and horizontal sash edges On single hung and double hung do not paint stain or finish the vertical sash edges any finish on the vertical sash edges may cause the sash to stick it is optional to paint stain or finish the horizontal sash edges On patio doors it is optional to paint stain or finish the vertical a...

Страница 8: ...lity of all building components including the use of Pella products as well as the design and installation of flashing and sealing systems are the responsibility of the Buyer or User the architect contractor installer or other construction professional and are not the responsibility of Pella Pella products should not be used in barrier wall systems which do not allow for proper management of moist...

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