EFCO S5500 SSG Captured - Manual (Page 48)

EFCO CORPORATION 6/2012 PART NO. Y556 Page 48 of 81
S-5500 SSG and Captured Corner Mullion Installation Instructions
Section VIII: Exterior Cover & Drive-In Gasket
Installation for Captured System
STEP #2 APPLY HORIZONTAL PRESSURE COVERS AT HEAD AND SILL
A. Plug the ends of the horizontal pressure covers including heads, intermediates,
and sills with backer rod. Recess the backer rod at least 1/4” from each end and
apply a generous amount of sealant to cover the ends of the covers.
B. Tool the sealant smooth, but allow it to slightly extend past the ends of the cover
as shown.
C. Run a continuous bead of sealant in the reglet of the horizontals immediately
before applying the exterior pressure cover as shown on sheet 49. Do not block
weeps with sealant.
D. Slide on and rotate the pressure covers as shown to engage the horizontal cam. Be
sure the weep holes in the sill pressure cover are facing downward. See inset
illustration on page 49. Apply the drive-in wedge gaskets.
E. Refer to “Section X: Exterior Cover & Drive-In Gasket Installation” beginning on
page 49 of the Series 5500 Outside Glazed Installation Instructions for more
information.
Apply backer rods at
each end of cover.
Apply sealant on each end of
cover (mitered end shown).
HEAD AND SILL
PRESSURE COVERS