Pella Window 81470102 User Manual

Part Number: 81470102  
© 2009 Pella Corporation  
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, you are acknowledging that this Limited Warranty is part of the terms of the  
sale. Failure to comply with all Pella installation and maintenance instructions may void your Pella  
Note: ese instructions may be used for Square Design Pella Bay and Bow windows that  
have a head and seat board. Support cables are installed in factory assembled bay and bow  
combinations.  
Caution: e factory-installed support cables must be attached to members capable of  
supporting 1,300 lbs. If the members are not capable of supporting 1,300 lbs., knee braces  
must be used in addition to the cables. Bay and bow units are not intended to support any  
roof structure. Consult an architect, engineer or construction professional if the ability of the  
members to support the bay or bow is not known.  
Installation Instructions for Typical Wood Frame Construction.  
ese instructions were developed and tested for use with typical wood frame wall  
construction in a wall system designed to manage water. ese instructions are not to be  
used with any other construction method. Installation instructions for use with other  
construction methods, multiple units or other bow and bay windows, may be obtained  
designs, construction methods, building materials, and site conditions unique to your project  
may require an installation method different from these instructions and additional care.  
Determining the appropriate installation method is the responsibility of you, your architect,  
or construction professional.  
 
ROUGH OPENING PREPARATION (CONTINUED)  
1
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  
is  
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 Replacement - No Siding Removal Opening  
Preparation for Siding: Vinyl, Steel , Aluminum.’ If exterior cladding is brick, add blocking  
at jamb to close the cavity between the brick and rough opening. Apply sealant at each joint  
between the brick, blocking and rough opening and cover the joints with flashing tape.  
HEAD  
AND  
JAMBS  
ONLY  
1G  
1G  
PRESS  
SEALANT  
INTO  
OPENING  
1”  
1G  
1G  
H. Apply sill flashing tape #1. (Wood wall construction only). Cut a piece of flashing tape  
12" longer than the opening. Apply at the bottom up to the exterior edge of the opening as  
shown. If the sheathing or water barrier  
Flashing tape  
is exposed, overlap 1" to the exterior as  
at the exterior edge  
shown in (1I).  
of the opening  
1H  
1"  
Note: e tape is cut 12" longer than  
the width so it will extend 6" up each  
side of the opening.  
6"  
1H  
1/2"  
1/2"  
6"  
I. Tab the sill flashing tape and fold (If  
tape #1 overhangs 1" to the exterior).  
Cut 1" wide tabs at each corner (1/2"  
from each side of the corner) (1I). Fold  
tape to the exterior and press firmly to  
adhere it to the water resistive barrier.  
1I  
Flashing tape  
overhanging 1"  
to the exterior.  
 
ROUGH OPENING PREPARATION (CONTINUED)  
1
2
1"  
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  
interior face of the opening.  
1J  
Note: e 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 necessary to ensure the spacers are level.  
Once level, attach spacers and shims to prevent movement.  
1K  
PREPARING AND SETTING THE WINDOW  
Square Jamb Cover  
If using Square Jamb Cover , Proceed to Step 2A.  
Angle Jamb Cover  
If using Angle Jamb Cover , Proceed to Step 2B.  
A. Install exterior jamb covers. Apply sealant along the leg of the jamb frame cover(s). Apply  
a bead of sealant to the top corner of the bottom frame expander. Drive the short leg of the  
jamb frame cover into the accessory groove using a block of wood with rounded edges and a  
hammer. e notched end of the jamb cover goes toward the sill.  
Sealant Bead - Along Flange  
Square Jamb Cover  
Sealant along leg of  
Square Jamb Cover  
Notched end of Square  
Jamb Cover  
 
PREPARING AND SETTING THE WINDOW (CONTINUED)  
TWO OR MORE PEOPLE WILL BE REQUIRED FOR THE FOLLOWING STEPS  
2
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  
the rough opening.  
C. Place temporary bracing under the seat of the  
window to raise the unit level.  
D. Place a shim near the top of the one jamb board,  
aligned with the top pre-drilled hole in the jamb  
board. Drill a pilot hole and partially insert a #10 x 3"  
flat head screw provided. Repeat for the other jamb.  
E. Continue placing shims at each pre-drilled  
installation screw hole in the jamb boards to plumb  
and square the window. Check window for squareness  
by making sure diagonal measurement for corner to  
2C  
corner is within 1/8" in both directions. Insert a #10  
x 3" flat head wood screw into each pre-drilled hole in  
the jamb boards. Finish inserting the top screw in each  
jamb board.  
Interior  
Interior  
2E  
2E  
F. If desired, shim and fasten headboard to rough opening. To keep plywood straight, center  
one finish head screw or 10D finish nail on units less than 10 feet wide and equally space two  
fasteners on units wider than 10 feet.  
Cross bracing mount  
CABLE CLAMP INSTALLATION  
Note: Support cables are installed in factory  
assembled bay and bow combinations.  
3
Header  
mount  
T-nut  
Install Cable Clamps based on type of installation  
needed. Cross Bracing Installation consists of  
attaching 2 x 6 cross bracing between the rafter  
tails. Header Mount Installation consists of  
attaching to a solid structural member - header,  
sill plates or wall stud.  
 
CABLE CLAMP INSTALLATION (CONTINUED)  
CROSS BRACING MOUNT OF CABLE CLAMPS  
3
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 clamp.  
Hold the cable up tight above the clamp and drive the two  
center clamp screws all the way in, locking the cable in place.  
Drive the remaining #12 x 3-1/4" square screws all the way.  
Note: Make sure all four screws are driven in at maximum  
torque. Additional tensioning may be done with the nuts  
on the opposite end of the cable at the bottom of the bay/  
bow unit.  
CROSS BRACING MOUNT - NON ACCESSIBLE CABLE ATTACHMENT  
Note: Install the cable clamp and cable prior to installing the bay/bow unit.  
A. Install 2 x 6 cross braces between the rafter  
tails, directly above the cable holes in the bay/  
bow head board.  
B. Remove the cable from the bay/bow unit.  
Measure the distance from the bottom of the  
cable clamp to the bottom of the header plus  
3/8" head clearance (A dimension). Measure  
the height of the unit from the top of the  
A
B
head board to the bottom of the seat board (B  
dimension). Add "A" to "B" plus 1", to get the  
correct length of cable hanging from the bottom  
of the cable clamp. Insert the cable end through  
the round hole of the cable clamp. Ensure the  
correct length of cable is hanging below the  
bottom of the cable clamp. Tighten the two  
cable clamp corner screws. Insert one screw into  
each of the center holes in the cable clamp, and  
tighten to fully clamp the cable in position.  
HEAD BOARD  
SEAT BOARD  
1"  
C. When the bay/bow unit is being installed, thread the threaded end of the cable through the  
"T" nut, down the length of the bay/bow unit, and through the drilled hole in the seat board.  
Place a washer and two hex nuts on each cable end.  
Note: e interior mullion cover can easily be removed for this purpose and must be  
reinstalled when installation is complete.  
 
CABLE CLAMP INSTALLATION (CONTINUED)  
3
HEADER MOUNT OF CABLE CLAMPS  
is 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  
POSSIBLE CONSTRUCTION  
FOR GABLE ROOF  
to a solid structural member - header, sill plates  
or wall stud. If the structural member or cable  
clamps are not securely attached, they may  
loosen during or after installation causing the  
bay/bow unit to sag.  
MINIMUM  
10-1/2”  
A. Install the cable clamps. Drive the #12 x 3-1/4"  
square screws part way into the mounting surface  
using a #3 square drive bit.  
HEAD BOARD  
B. Run the cable up through the bottom of the  
cable clamp. Hold the cable up tight above the  
18" PROJECTION  
MAXIMUM  
clamp and drive the two center clamp screws all  
the way in to lock the cable in place. Drive in the  
SEAT BOARD  
remaining #12 x 3-1/4" square screws all the way.  
Note: Make sure all 4 screws are driven in at  
maximum torque. Additional tensioning may  
be done with the nuts on the opposite end of the  
cable at the bottom of the window.  
SUPPORTING THE WINDOW  
4
A. Tighten the top hex nut on both cable ends. Using a 3/16" wrench or socket, hold the  
cable end in position while tightening the top hex nut with a 1/2" wrench or socket. is  
will keep the cable from twisting as the hex nuts are tightened.  
B. Remove the temporary bracing. Check the window for level, plumb, sash reveal and  
operation. Readjust, if needed.  
Note: Be sure to use the temporary support when readjusting the hex nuts.  
C. Remove blocking from under the seat board.  
D. Tighten the locking (bottom) nut on both cable ends and  
remove the temporary support once the final position is found.  
DO NOT cut the threaded end off the cable as this will prevent  
future adjustment should it be needed.  
4E  
E. Installation of knee braces is recommended to help support  
the weight of the bay/bow unit. Weight calculations must take  
into account the weight of the items that may be placed on  
the seat board of the bay/bow unit. If the upper roof/framing  
members are not capable of supporting 1,300 lbs. or if more  
than 500 lbs. will be put on the seat board, knee braces must be  
used in addition to the cables.  
 
INSULATING FOAM APPLICATION  
5
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 a 1" deep bead of foam.  
is will allow room for expansion of the foam and  
will minimize squeeze out. If using foam other than  
Great Stuff Window and Door Insulating Foam  
Sealant by the Dow Chemical Company, allow the  
foam to cure completely (usually 8 to 24 hours)  
before proceeding to the next step.  
5A  
Note: It may be necessary to squeeze the end  
of the tube with pliers to be able to insert into  
the space between the jamb boards and the  
rough opening, and between the head and seat  
board and the rough opening.  
 
SEALING THE WINDOW TO THE  
EXTERIOR WALL CLADDING  
6
Note: e 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  
and  
Sealant typical  
Backer Rod  
and  
Sealant typical  
3/8" Clearance  
3/8" Clearance  
Insulating  
Foam  
Insulating  
Foam  
3/8"  
3/8"  
BRICK FRAMED REPLACEMENT  
BRICK SMALL BLOCK REPLACEMENT  
Backer Rod  
and  
Sealant typical  
Backer Rod  
and  
Sealant typical  
3/8" Clearance  
3/8" Clearance  
Insulating  
Foam  
Insulating  
Foam  
3/8"  
3/8"  
JAMB - BRICK VENEER (Casement)  
JAMB - BRICK VENEER  
JAMB - 2X4 FRAME  
Backer Rod  
and  
Sealant typical  
Backer Rod  
and  
Sealant typical  
Insulating  
Foam  
Insulating  
Foam  
Insulating  
Foam  
Backer Rod  
and Sealant  
typical  
3/8"  
3/8"  
3/8"  
Angle Jamb Cover  
Square Jamb Cover  
 
SEALING THE WINDOW TO THE  
EXTERIOR WALL CLADDING (CONTINUED)  
6
A. Install wood blocking between the top of the  
window and the soffit as shown. e blocking  
should be flush with the exterior of the window  
frame.  
6A  
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  
bent from the factory.  
6B  
If using Square Jamb Cover, Proceed to Step 6C.  
If using Angle Jamb Cover, Proceed to Step 6G.  
Square Jamb Cover  
Angle Jamb Cover  
C. NEW CONSTRUCTION APPLICATIONS  
WITH SQUARE JAMB COVER: Flash  
from jambs to water resistive barrier. In new  
construction application, use flashing tape to  
flash from the jamb of the unit to the water  
resistive barrier. Overlap onto the unit jamb  
at least 3/8”. If necessary, repair any punctures  
with another piece of flashing tape  
6C  
D. Insert backer rod. If required, install siding,  
then insert backer rod into the space between  
the exterior finish material and unit exterior  
deep enough to provide at least a 1/2" clearance  
between the backer rod and the exterior face of  
the wall sheathing.  
Exterior  
Note: Backer rod adds shape and depth for the  
sealant line.  
E. Apply a bead of high quality exterior grade  
sealant to the entire perimeter of the window,  
except for one inch at either side of the sill. DO  
NOT fill between the frame expander and the  
under side of the seat board.  
6D  
F. Shape, tool and clean excess sealant. When  
finished the sealant should be the shape of an  
hourglass.  
6E  
Note: is method creates a more flexible  
sealant line capable of expanding and  
contracting.  
Installation Complete.  
Angle Jamb Cover  
INSTALLATION USING ANGLE JAMB COVERS:  
G. Cut jamb covers to length. Measure height of one flanker unit not including  
head & seatboard. Cut jamb covers to 4-9/16” taller than flanker unit height.  
H. Notch leg of jamb covers. On one jamb cover, notch the leg 3” from one end and 2” from the  
other end. Mirror these notches on the other jamb cover, to create a right and left handed part.  
I. Install exterior jamb covers. Apply sealant along the leg of each jamb cover and drive this leg  
into the accessory groove using a block of wood with rounded edges and a hammer. Install the  
jamb covers with the 3” notch towards the sill.  
J. Nail the jamb covers to the wall using one nail on each end and one in the center.  
K. Cut two pieces of flashing tape 6” longer than the jamb covers. Apply tape 3” above the top  
of the jamb cover, overlapping it onto the water resistive barrier.  
 
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. is method creates a more  
flexible sealant line capable of expanding and contracting.  
INSTALLING INTERIOR JAMB COVE MOULD  
7
A. Install the interior  
cove mould. Remove  
cove mould from  
accessory package  
7A  
and dry fit over the  
installation screws.  
Cove Mould  
Install interior cove  
mould and secure  
with 1" brads into the  
jamb and trim.  
 
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 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 and horizontal panel edges.  
Note: To maintain proper performance do not paint, finish or remove the weather-stripping,  
mohair dust pads, gaskets or vinyl parts. Air and water leakage will result if these parts are  
removed. After finishing, allow venting windows and doors to dry completely before closing  
them.  
Pella Corporation is not responsible for interior paint and stain finish imperfections for any  
product that is not factory-applied by Pella Corporation. Use of inappropriate finishes, solvents,  
brickwash, or cleaning chemicals will cause adverse reactions with window and door materials and  
voids the  
Limited Warranty.  
EXTERIOR FINISH  
e exterior frame and sash are protected by aluminum cladding with our tough EnduraClad®  
or EnduraClad Plus baked-on factory finish that needs no painting. Clean this surface with mild  
soap and water. Stubborn stains and deposits may be removed with mineral spirits. DO NOT use  
abrasives. DO NOT scrape or use tools that might damage the surface.  
Use of inappropriate finishes, solvents, brickwash or cleaning chemicals will cause adverse reactions  
with window and door materials and voids the Limited Warranty.  
CARE AND MAINTENANCE  
Care and maintenance information is available in the Pella Owner’s Manual. You can obtain an  
owner’s manual by contacting your local Pella retailer. is information is also available on www.  
pella.com.  
IMPORTANT NOTICE  
Because all construction must anticipate some water infiltration, it is important that the wall  
system be designed and constructed to properly manage moisture. Pella Corporation is not  
responsible for claims or damages caused by anticipated and unanticipated water infiltration;  
deficiencies in building design, construction and maintenance; failure to install Pella® products in  
accordance with Pella installation instructions; or the use of Pella products in wall systems which  
do not allow for proper management of moisture within the wall systems. e determination of the  
suitability 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 moisture within the wall systems, such as barrier Exterior Insulation and Finish  
Systems, (EIFS) (also known as synthetic stucco) or other non-water managed systems. Except  
in the states of California, New Mexico, Arizona, Nevada, Utah, and Colorado, Pella makes no  
warranty of any kind on and assumes no responsibility for Pella windows and doors installed in  
barrier wall systems. In the states listed above, the installation of Pella Products in barrier wall or  
similar systems must be in accordance with Pella’s installation instructions.  
Product modifications that are not approved by Pella Corporation will void the Limited Warranty.  
 

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