Oldcastle BuildingEnvelope 3000 Series Thermal MultiPlane - Manual (Page 47)

The example below sho ws installation of the center
set system, options for front or back set are also
available. Please reference price catalog for specific
extrusions and anchors required for your installa-
tion. Please note the locations of various seals and
insure proper locations of these seals when install-
ing typical runs and expansion sections of each of
these systems. These seals are show n in the sub-sill
installation and assembly sections of this manual.
The sub-sills for these products are designed so
that sill anchors may be properly sealed prior to
frame installation. The frame is either installed over
the hook-in anchors or dropped into the sill receptor.
This prevents any additional fasteners from
penetrating the sill and potentially causing leaks
from under the sill. Be sure to properly cap seal all
sill anchors prior to beginning installation of
frames.
Multiple units may require the use of an expansion
mullion if total run exceeds 24 feet in length. When
elevation exceeds the 24 foot limit, locate expan-
sion mullions at a distance of no more than every
20 feet. Locate splice in sub-sill at a distance of no
more than every 12 feet. A minimum of 7/16" clear-
ance betw een the jamb and sill end dam must be
provided at each end of units when using expansion
mullions. This will allow the minimum 3/8" clearance
to move the units side ways so that the second unit
may be rotated into position and interlocked into
first unit. Once in position units should be centered
into opening to provide equal joints at the jambs.
OBE recommends the use of the FG-2188 PVC
filler in the jambs and head to improve the perim-
eter seal.
EXPANSION MULLION
INSTALLATION
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S E R I E S 3 0 0 0 T H E R M A L M U L T I P L A N E I N S T A L L A T I O N M A N U A L
7/16"
1/4" 1/16"
3/8" 3/8"
1/4"
2 1/4"