EFCO 945 Series - Manual (Page 13)

To ensure that the unit will assemble correctly, verify that the expansion mullion
halves are fabricated opposite of each other. See Fig. 4. Apply butyl type sealant to the
ends of all horizontal members that come in contact with the expansion mullion. Install
anchors into the head. Before assembly, apply wax lubricant to all STC8 fasteners.
Fasten the expansion mullion to all horizontal members. Fasten the other vertical mullion,
jamb, etc. to the other end of the horizontals. Make sure that you have applied butyl type
sealant to the other ends of the horizontal members. Wipe off all excess sealant.
ANCHOR
FT46 (SHOWN)
FT47 OPTIONAL
STC8
EXPANSION MULLION
HALF (DEEP POCKET)
(8313)
NOTE: For inside glazed systems, install
exterior glazing gasket (WC12) prior to
assembly. For outside glazed systems,
install interior glazing gasket (WNE0) prior
to assembly of units.
SILL
(8344)
HEAD
(8300)
INT. HORIZONTAL
8301 - (SHOWN)
8302 - OPTIONAL
GENERAL NOTE: If the D.L.O. is 36" wide or less, 2
strap anchors are required. D.L.O.’s greater than 36"
require 3 anchors. Anchor widths and locations
should be verified by a structural engineer for job
specific conditions.
[FIG. 4]
BAB 11/2000
APPLY BUTYL
TYPE SEALANT
TO THE AREA
THAT
CONTACTS THE
VERTICAL
MULLION FILLER
BEFORE
ATTACHING TO
THE EXPANSION
MULLION.
EXPANSION MULLION
HALF (SHALLOW
POCKET)
(8312)
SECTION IV - UNIT ASSEMBLY
(CON’T)
CAPTURED AND STRUCTURAL GLAZED MULLION SYSTEMS
STEP 3) HORIZONTALS TO EXPANSION MULLION
ASSEMBLY
(CAPTURED SYSTEM SHOWN, STRUCTURAL GLAZED SYSTEM SIMILAR)
PAGE 11