EFCO 8750XD - Manual (Page 36)

EFCO 2012 Page 36
Series 8750XD Unitized Curtain Wall Installation Instructions
Section 11 - Setting Typical Head Condition Units
1. Setting typical head condition units is very similar to setting typical intermediate units. Reference paged 34 and 35. There are however a few differences
these will be explained verbally and graphically below.
2. Apply splice sheet to the top corners per steps a & b on page 27, leaving a portion of the slice sheet hanging over the edge. Apply sealant to the underside
of the portion hanging over the edge, and wrap it down over the edge. Smooth it to remove any bubbles in the sealant. Apply sealant to the edge and tool to
create a water tight seal. See figures 83 thru 86.
3. The typical head condition units have an optional retractable hanger (KV20), which can be drive down with a mallet to get it out of the way for setting the unit.
See figures 86 and 87.
Retractable hanger
can be driven down
with a mallet.
Figure 83
Figure 85
Apply sealant to
the underneath
side of the splice
sheet that hangs
over the edge
Apply sealant to
the edges of the
splice sheet and
tool to create a
water tight seal.
Apply backer rod
and sealant in
the hollow of the
jamb adapter
Set splice sheet in
a bead of sealant
Wrap splice
sheet down over
the edge of the
unit and smooth
top remove any
air bubbles
Figure 86 Figure 87
Screw hole to
be plugged
and sealed
Figure 84