EFCO 8750XD - Manual (Page 35)

EFCO 2012 Page 35
Series 8750XD Unitized Curtain Wall Installation Instructions
Section 10 - Setting Typical Intermediate Units
7. 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 79.
8. Set the next unit after the jamb by nesting the vertical stacking mullions together without snapping them. See Figure 61 On page 29.
9. Lower the units enough to engage the unit splice bar (FM41) at the 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.
10. Place a 1” shim pack around the hanger load clip on top of the mullion at the head of the unit below. See Figure 89.
11. Once the unit is approximately 1/2” above the engagement leg of the gutter at the stack joint, use clamps to snap the mullions together. Reference Figure 63
and step 13 on page 30.
12. Lower the unit down into position to completely engage the unit splice bars at the stack joint. The hook anchors should also be hooked onto the slab anchor.
The unit should now be setting hard on the shims.
13. Adjust the jack bolt as required for the unit to set hard on the shim pack at the starter sill below.
14. The final adjustment and setting of a typical intermediate unit is the same as the final adjustment and setting at sill units. See steps 5-8 on page 31 for
adjustment and final setting of the unit.
15. Repeat steps 2 through 14 until all units on the intermediate floor levels have been installed.
16. When erecting a long run of units, check overall frame dimensions at every fifth unit to avoid dimensional buildup and to ensure that units are properly
positioned with regard to established bench marks.
Figure 79 Figure 80
Figure 81
Figure 82
Apply sealant
to foam backer
1/2”
Place 1” shim around the splice
bars on top of the mullion at the
head of the unit below
Once unit is approximately 1/2”
above engagement leg of stack
sill, snap mullions together.