EFCO Special Purpose Windows Installation - Manual (Page 35)

EFCO CORPORATION 9/2/2014 PART NO. YW40 Page 2 of 6
Window Installation Instructions - Panning Installation Section -
8. Pull the panning frame into the opening from the exterior. Make sure the interior trim will cover all
exposed interior perimeter conditions before anchoring the panning.
9. Attach the entire panning perimeter square, plumb, and level into the opening at 16” on center with
attachment screws by others. All blocking, sealants, and perimeter fasteners are Not by EFCO. If
mullions are required, refer to the mullion installation sheet 5 of this Section.
Anchor spacing may need to be reduced depending on design pressure and anchorage conditions.
For perimeter anchor type and spacing, refer to the approved shop drawings or consult the project
design professional.
10. Caulk the perimeter of the pan frame to the surrounding masonry opening. Back bed the panning
vinyl with sealant just before insertion of the window, or cap seal the window to the panning frame
joint from the exterior after the frame is installed. Whichever method is used, the window must be
wet sealed to the panning. The panning vinyl is not an adequate weather seal.
11. Set the exterior sill leg of the window onto the sill of the panning frame. Then push the window
head and jamb in against the panning head and jamb. Make sure that the window head and jamb
legs snap-in securely behind the panning frame clips. This is extremely important! The window
must be pushed tight against the panning for the clips to snap-in.
12. Install the interior trim clips. Start by attaching the first clip approximately 6” from each corner, then
every 16” on center around the entire window perimeter. Attach the clips to the window with EFCO
STT6 screws and to the opening with the erector furnished anchors. Drilling holes in the clips is Not
by EFCO. The interior trim clips provide the structural support for the window unit. Each clip must
be attached to both the window and the condition to hold the window in the opening.
Anchor spacing may need to be reduced depending on design pressure and anchorage conditions.
For perimeter anchor type and spacing, refer to the approved shop drawings or consult the project
design professional.
13. All interior trim covers are sent long to be cut to size in the field. Horizontal interior trim covers run
through unless noted otherwise on the shop drawings. To install, first measure the interior
horizontal opening width and cut the horizontal trim covers accordingly, the snap-in place.
14. Measure between the horizontal trim covers, then cut the vertical trim covers to the proper length.
Snap the vertical trim covers into place.
Completely read the General Installation Instructions and all other sections which pertain
to your project before starting work. These recommendations are for general erection
procedures only. For actual job conditions, see the details on the shop drawings. For
perimeter anchor types and spacing, refer to the approved shop drawings or consult the
project design professional.