EFCO 8750XD - Manual (Page 27)

EFCO 2012 Page 27
Series 8750XD Unitized Curtain Wall Installation Instructions
Section 6 - Unit Inspection and Preparation for Installation
Apply sealant
to the HC05.
2. Preparations are different at the jamb condition units.
a. Apply backer rod and sealant into the hollows of the jamb adapter.
b. Apply a splice sheet following steps 2-6 on page 33. See figure 52. Note: steps a & b can be done before or after the unit is set. Steps c thru e must
be done immediately before the unit above is set.
c. Apply HC05 sealant backer per instructions on page 26. See figure 53. Note that the HC05 only needs to extend slightly past the face of the mull.
d. A splice sheet will be applied the condition side of the unit to act as an end dam. There is a special splice sheet for this application with double stick
tape on one end. (KV39) Use this tape to attach the splice sheet to the unit. See figure 54.
e. Apply sealant to the side of the splice sheet that is hanging this will be used to seal it to the unit below. See figure 54.
f.
Once the unit is completely set press the hanging end of the splice sheet to the unit below and smooth to remove any bubbles. See figure 55.
g. Finally liberally apply sealant around the perimeter of the splice sheet. See Figure 55.
HC13 or HC14 Silicone
Splice Sleeve, leave
edge hanging
WEA2 Stack Gasket
LC54 to be cut 1/4”
short to allow
weeping.
Figure 52
Figure 53
Figure 54
HC05
Extending
Slightly
Use double stick
tape to apply
Apply sealant to
the free end of
the splice sheet,
to be stuck to the
unit below.
Press free end of
sheet to the unit
below once it is
completely set.
Sealant around
perimeter of sheet
Note Jamb
Condition
removed to
allow process
to be seen
better.
Figure 55
Splice sheet set
and bed of sealant
and edge sealed.