EFCO 8800 Series Assembly Instructions Vol.3 - Manual (Page 17)

EFCO 2009 Page 17
Series 8700 / 8800 Unitized Curtain Wall Installation Instructions - Volume 3
9. Use a short piece of 17E9 adapter to align the horizontal and vertical (see Figure 39). Once the shear blocks have been attached with SM00 fasteners,
adjust the shear blocks so that the face of the horizontal aligns with the face of the 17E9 adapter. Using a mitered scrap piece of horizontal as shown in
Figure 38 will aid with alignment. The shear blocks have (4) adjustment slots and (1) fixing hole for adjustment and locking them into position (see Figure 41).
10. Lock the shear block in place with (1) STK3 alignment screw (#12-14 X 3/4” HW-SMS 410 TEK 3) at each intermediate horizontal location (see Figure 40).
11. Using an approved solvent or cleaner, clean the sealant contact surfaces of the mullions and shear blocks of all oils and other contaminants.
12. Apply a generous amount of silicone sealant around the front part of the shear block as shown in Figure 42. Apply a generous bead of silicone sealant
around the front part of the intermediate horizontals as shown in Figure 43. Apply sealant to the mitered end only.
KV12 Shear
Block
Unit Corner
Mullion
Figure 38
Align face of mullion
and adapter.
Scrap Piece
of Horizontal
Intermediate
Horizontal
Figure 39 Figure 40
Figure 41 Figure 43 Figure 42
Scrap Piece
of Horizontal
KV12 Shear
Blocks
KV12 Shear
Block
Adjustment
Slots
STK3
Alignment
Screw
Unit Corner
Mullion
Fixing Hole
Apply
silicone
sealant.
Apply
silicone
sealant.
Mitered
end of
horizontal.
Section 8 - Inside 90° Corner Unit Frame Assembly : A. Mullion Subassembly
Unit Corner
Mullion
Scrap piece of 17E9
adapter used to align
shear block.
Align face of
mullion and
adapter.
17E9
Adapter