EFCO 8750XD User Manual
Page 29

EFCO 2012
Page 29
Series 8750XD Unitized Curtain Wall Installation Instructions
10. Before setting the next unit apply a generous amount of sealant to the foam sealant backer. Run a bead down the entire length . See Figure 59.
11. Set the next unit after the jamb unit by nesting the vertical stacking mullions together without snapping them. See Figure 61.
12. Lower the unit to the static starter sill, but still be approximately 1/2” above the engagement leg of the starter sill. The unit hook anchors should have enough
vertical adjustment to hook onto the slab anchors.
Section 7 - Setting Units at Static Starter Sills
Figure 62
Once unit is approximately 1/2”
above engagement leg of stack
sill, snap mullions together.
1/2”
Figure 61
Figure 60
Figure 59
Apply sealant
to foam backer
Mate mullions without snapping them
together before setting on the starter
sill, then lower unit to with 1/2” of the
starter sill engagement leg.
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