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EFCO 8750XD User Manual

Page 29

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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.