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EFCO 8750XD User Manual

Page 27

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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.