EFCO 8800 Installation Instructions - Manual (Page 35)

EFCO 2009 Page 35
Series 8700 / 8800 Unitized Curtain Wall Installation Instructions
Figure 74
8. Once the unit is approximately 1/2” above the engagement leg of the starter sill, use clamps to snap the mullions together. Place one clamp at the center of
the mullion at the bottom of the units. Use wood blocks to protect the finished surfaces of the mullions. Tighten the clamp until the mullion halves begin to
snap together. Place another set of wood blocks and a clamp a couple of feet up the unit mullions and tighten it until the mullions snap together. Repeat this
process up the length of the mullion until the mullion halves are snapped together continuously. It may be necessary to work from one clamp to the next
several times, or move the clamps to ensure the mullions are snapped together evenly. See Figure 75.
9. Lower the unit the rest of the way down until it sets hard on the static starter sill.
10. Slide the unit laterally to adjust the mullion width to 3”.
Section 8 - Setting Units at Static Starter Sills
Wood block on both
sides of mullion.
Clamp mullions
and snap together.
Figure 75
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..