Pella 808F0105 User Manual
Part Number: 808F0105© 2011 Pella Corporation
INSTALLATION INSTRUCTION INSTRUCCIONES DE INSTALACION
PELLA® PRECISION FIT AND RENOVATION POCKET
REPLACEMENT DOUBLE-HUNG VENT WINDOW
Important! The Pella Replacement Window is designed to replace older style double-hung
windows. The original window frame will remain in place and only the existing sash will be
removed. Read these instructions thoroughly before beginning. Failure to install as recommended
will void any warranty, express or implied. For types of installation other than shown, contact your
local Pella representative or visit http://www.pella.com.
YOU WILL NEED TO SUPPLY: TOOLS REQUIRED:
• Cedar or Impervious shims/spacers (12 to 20)
• Closed cell foam backer rod/sealant backer (12 to 30
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.
Installation will require two or more persons for safety reasons.
SEALANTSEALANT
• Tape measure
• Level
• Hammer
• Utility knife
• Pry bar
• Sealant gun
• Screwdrivers
(#2 Phillips and Flat blade)
• Putty knife
• Wood chisel
• Drill
REMEMBER TO USE APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT.
INTERIOR
Checkrail
Flashing tape
Always read the Pella® Limited Warranty before purchasing or installing Pella
is part of the terms of the sale. Failure to comply with all Pella installation and maintenance
instructions may void your Pella product warranty. See Limited Warranty for complete details at
http://warranty.pella.com.
products. By installing this product, you are acknowledging that this Limited Warranty
1
DOUBLE-HUNG SASH REMOVAL
CAUTION: Many windows in older homes are painted with lead-based paint. Removal
of old windows may disturb this paint. Proper precautions must be taken to minimize
exposure to dust and debris. Consult state or local authorities for more information.
Note: Verify the opening and window dimensions prior to removing the existing
window sash.
Interior
1A
Exterior
blind stop
1C
Parting stop
Interior
1A
sash stop
sash stop
Parting
stop
Stool
Apron
Bottom
balance
cords
Top sash
Exterior
blind
stop
Sill
Bottom
sash
Balance
cord pulleys
Top
balance
cord
Bottom
sash
weight
Top sash
weight
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.
INTERIOR
SASH STOP
WEDGE
PARTING STOP
1B
1A
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.
C. Remove the parting stops by prying them out or by pulling them out with a channel lock.
There may be a small wedge of wood at the bottom of the upper sash that is next to the
parting stops. To make it easier to remove the parting stop, use a chisel to knock off the
wedge.
1C
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.
2
PREPARE THE OPENING
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 ashing 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.
1E
Blind stop
Flashing
Tape
2A
2B
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.
2D
Sill Adapter
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