EFCO S5500 SSG Captured - Manual (Page 51)

EFCO CORPORATION 6/2012 PART NO. Y556 Page 51 of 81
S-5500 SSG and Captured Corner Mullion Installation Instructions
Section VIII: Exterior Cover & Drive-In Gasket
Installation for Captured System
STEP #4 APPLY CORNER MULLION PRESSURE PLATE
A. Position the pressure plate so there is an equal space on each end of the pressure plate at
the head and sill covers.
B. Screw down the corner mullion pressure plate with the required fasteners at 6” center to
center. Torque all fasteners to 80 inch-pounds. The fasteners should be applied starting at
the bottom of the pressure plate working upward to the end. It is not necessary to cap
seal the heads of the pressure plate screws.
C. Seal the mitered ends of the pressure covers at the head and sill of the corner mullion. Fill
the void between the covers, and tool the sealant smooth. Remove any excess sealant.
D. Fill the void with backer rod that is between the ends of the corner mullion pressure plate
and where the pressure covers at the head and sill intersect.
E. Apply sealant to cover the backer rod, and seal the pressure covers and pressure plate
water-tight as shown below for both the head and sill.
SILL CONDITION
SHOWN, HEAD SIMILAR
CORNER MULLION
PRESSURE PLATE
Apply sealant to cover the
backer rod at the void, and
tool water-tight.
Seal the ends of the pressure covers
and pressure plate water-tight.
Torque the pressure
plate screws to 80
inch-pounds.
Fill void with a small
piece of backer rod to
support the caulk joint.