Pella 81470102 User Manual

© 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

Part Number: 81470102

Flashing tape #1

Flashing tape #2

Knee braces

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
product warranty. See Limited Warranty for complete details at http://warranty.pella.com.

Always read the Pella® Limited Warranty before purchasing or installing Pella products. By

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
from Pella Corporation, a local Pella retailer, or by visiting http://www.pella.com. Building
designs, construction methods, building materials, and site conditions unique to your project
may require an installation method dierent from these instructions and additional care.
Determining the appropriate installation method is the responsibility of you, your architect,
or construction professional.

YOU WILL NEED TO SUPPLY: TOOLS REQUIRED:

• Impervious Shims/Spacers (12 to 20)

• Finish nails, 1" brads

• 3/16" x 2-1/2" concrete screws (for masonry installation)

• Closed cell foam backer rod/sealant backer (12 to 30 ft.)

®

• Pella

SmartFlash™ foil backed butyl window and

door ashing tape or equivalent

• Great Stu

™

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.

• OSI Quad Multi-Polymer sealant or equivalent high
quality exterior grade polyurethane or silicone sealant.

4&"-"/5

(1 tube per window)

4&"-"/5

• Tape measure

• Level

• Square

• Hammer or Finish Nailer

• Stapler

• Scissors or utility knife

• Drill with a #2 Phillips (at least
4" long) and #3 square drive bit
(provided in cable clamp kit)

• 1/2" open end wrench

• 3/16" wrench or socket

• Sealant Gun

Installation will require two or more persons for safety reasons.

LEGEND  STEPS REQUIRED OF:

ALL

= All applications

REPL APPS

NEW CONST

= Replacement applications

= New Construction applications

REMEMBER TO USE APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT.

ROUGH OPENING PREPARATION

1

A. Remove all packaging from the window.

B. REPLACEMENT APPLICATIONS: Remove the

existing, window, trim, insulation and sealant from the
opening.

C. NEW CONSTRUCTION APPLICATIONS: Cut the

water resistive barrier. Fold the side aps into the opening
and staple to inside wall.

NEW CONST REPL APPS ALLALLALLALLALLALLALLALLALLALL

D. Conrm the window will t the opening. Measure all

four sides of the opening to make sure it is 3/4" larger
than the window in both width and height. Measure the
width and height in several places to ensure the header
and studs are not bowed.

Note: 1-1/2" or more of solid wood blocking is required
around the perimeter of the opening. Fix any problems
with the opening before proceeding. If installing new
blocking, install the blocking so it’s ush with the
exterior sheathing of the house. DO NOT attempt to
install a window in an under size opening.

Water Resistive Barrier
1st cut

3rd cut

2nd

cut

Interior

1D

1E

1C

E. Conrm the opening is plumb and level.

Note: It is critical the bottom is level.

ROUGH OPENING PREPARATION (CONTINUED)

1

F. Conrm wall depth measurement. Measure bottom board cutback on unit to make sure it is

ALLALLALLALLALLALLALLALLALLREPL APPSREPL APPSREPL APPSREPL APPSREPL APPSREPL APPSALLALLALLALLALLALLALLALLALL

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 ashing 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 ashing tape.

HEAD

AND

JAMBS

ONLY

1G

PRESS

SEALANT

INTO

OPENING

1”

1G

1G

1G

H. Apply sill ashing tape #1. (Wood wall construction only). Cut a piece of ashing 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
is exposed, overlap 1" to the exterior as
shown in (1I).

Note: e tape is cut 12" longer than

Flashing tape

at the exterior edge

of the opening

1"

6"

the width so it will extend 6" up each
side of the opening.

6"

1H

1/2"

1/2"

I. Tab the sill ashing 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 rmly to
adhere it to the water resistive barrier.

1I

Flashing tape

overhanging 1"

to the exterior.

1H

ROUGH OPENING PREPARATION (CONTINUED)

1

J. Apply sill ashing tape #2. Cut a piece of ashing tape 12"

ALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALLALL

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.

Note: e ashing 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.

PREPARING AND SETTING THE WINDOW

2

If using Square Jamb Cover , Proceed to Step 2A.

If using Angle Jamb Cover , Proceed to Step 2B.

1"

1J

1K

Square Jamb Cover

Angle Jamb Cover

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.

Square Jamb Cover

Sealant along leg of
Square Jamb Cover

Sealant Bead - Along Flange

Notched end of Square

Jamb Cover