EFCO 8800 Installation Instructions - Manual (Page 41)

EFCO 2009 Page 41
Series 8700 / 8800 Unitized Curtain Wall Installation Instructions
Section 9 - Setting Units at Dynamic Starter Sills
Clamp mullions
and snap together.
Figure 89 Figure 88
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..
Wood block on
both sides of
mullion.
19. 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 89.