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© 2009 Pella Corporation Part Number: 81470102
INSTALLATION INSTRUCTION -
INSTRUCCIONES DE INSTALACIÓN
FOR SQUARE DESIGN BAY AND BOW WINDOW
WITH SEAT BOARD
Lea las instrucciones en español en el reverso.
Read these instructions thoroughly before performing any steps.
Cable clamps
Jamb covers
(2-1/2" Wide)
Head frame
expander
Flashing tape #1
Flashing tape #2
Knee braces
®
Always read the Pella Limited Warranty before purchasing or installing Pella products. By
installing this product, y
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Interior YOU WILL NEED TO SUPPLY: TOOLS REQUIRED: • Impervious Shims/Spacers (12 to 20) • Tape measure • Finish nails, 1" brads • Level • 3/16" x 2-1/2" concrete screws (for masonry installation) • Square • Closed cell foam backer rod/sealant backer (12 to 30 ft.) • Hammer or Finish Nailer ® ™ • Pella SmartFlash foil backed butyl window and • Stapler door flashing tape or equivalent • Scissors or utility knife ™ • Great Stuff Window and Door Insulating Foam • Drill with a #2 Phillips (at le
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1" 1ROUGH OPENING PREPARATION (CONTINUED) F. Confirm wall depth measurement. Measure bottom board cutback on unit to make sure it is larger than the distance from the interior of wall to exterior of wall. If necessary, remove or cut siding. Measure This Distance G. REPLACEMENT APPLICATIONS: Seal between exterior cladding and wall. If exterior cladding is siding, apply sealant between the siding and rough opening at the head and jambs and cover with flashing tape according to Express Repl
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1ROUGH OPENING PREPARATION (CONTINUED) J. Apply sill flashing tape #2. Cut a piece of flashing tape 12" longer than the opening width. Apply at the bottom, overlapping tape #1 by at least 1". DO NOT allow the tape to extend past the 1J interior face of the opening. Note: The flashing tape may not fully cover the framing members. K. Install and level sill spacers. Place 1" wide by 3/8" thick spacers on the bottom of the opening 1" from each side and every 16" on center. Add shims as necess
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2PREPARING AND SETTING THE WINDOW (CONTINUED) TWO OR MORE PEOPLE WILL BE REQUIRED FOR THE FOLLOWING STEPS B. Insert the window from the exterior of the building. Place the seat of the window at the bottom of the opening and slide the top into position. Center the window between the sides of the opening to allow clearance for shimming. Note: If cross bracing is required for soffit installation of the cable systems, proceed to Step 3A and install cross bracing before unit is inserted into th
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3CABLE CLAMP INSTALLATION (CONTINUED) CROSS BRACING MOUNT OF CABLE CLAMPS 3B A. Install 2" x 6" cross braces between rafter tails, directly above the cable holes in the bay/bow head board. B. Install the cable clamps directly above the "T" nuts where adequate support is available. Holding the clamp parallel to the up-running cable, drive the #12 x 3-1/4" square drive screws part way into the mounting surface using a #3 square drive bit. 3C C. Run the cable up through the bottom of the cable
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3CABLE CLAMP INSTALLATION (CONTINUED) 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 DASHED LINES INDICATE to a solid structural member - header, sill plates POSSIBLE CONSTRUCTION FOR GABLE ROOF or wall stud. If the structural member or cable clamps are not securely attached, they may loosen during or aft
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5INSULATING FOAM APPLICATION 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" Interior deep into the space between the window and the rough opening and apply
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SEALING THE WINDOW TO THE 6 EXTERIOR WALL CLADDING Note: The sealant details shown are standard recommendations from the sealant industry. Contact your sealant supplier for recommendations and instructions for these and any other applications. VINYL SIDING REPLACEMENT 2X4 WOOD SIDING REPLACEMENT 2X6 Backer Rod Backer Rod and and Sealant typical Sealant typical 3/8" Clearance 3/8" Clearance Insulating Insulating Foam Foam 3/8" 3/8" BRICK FRAMED REPLACEMENT BRICK SMALL BLOCK REPLACEMENT Backer
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SEALING THE WINDOW TO THE 6EXTERIOR WALL CLADDING (CONTINUED) A. Install wood blocking between the top of the 6A window and the soffit as shown. The blocking should be flush with the exterior of the window frame. B. Apply a bead of sealant on the leg of the head frame expander and install by tapping on it using a block of wood with rounded edges and a hammer. Frame expander is pre-notched and 6B bent from the factory. If using Square Jamb Cover, Proceed to Step 6C. Square Jamb Cover Angle
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L. Insert backer rod and apply sealant. Install siding, and insert backer rod between the each jamb cover and the exterior finish material as deep as it will go. Apply a bead of high quality exterior sealant on top of the backer rod and a corner bead to the top of the head frame expander. Shape, tool, clean excess sealant. When finished, the sealant should be the shape of an hourglass. Note: Backer rod adds shape and depth for the sealant line. This method creates a more flexible sealant li
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INTERIOR FINISHING If products cannot be finished immediately, cover with clear plastic to protect from dirt, damage and moisture. Remove any construction residue before finishing. Sand all wood surfaces lightly with 180 grit or finer sandpaper. DO NOT use steel wool. BE CAREFUL NOT TO SCRATCH THE GLASS. Remove sanding dust. Pella products must be finished per the below instructions; failure to follow these instructions voids the Limited Warranty. • On casement and awnings, it is optional to
