16
FIGURE 14
Assembly Instructions - (cont.)
Step 3: Continue assembly of the second, third and fourth
courses of the rebox side wall and back wall. Apply mortar to
the top of each layer of wall components, set the next course
above into place. Be sure to mortar all vertical joints of the side
wall to back wall connection when setting each component to
its mate. (Figure 13)
Look for some mortar to squeeze out along the joints
of all contact surfaces as a sign that the joint is thoroughly
sealed with the approved mortar.
Step 4: When all of the MAGNUM rebox wall components are
set, check the top surface of the rebox for level.
If necessary, adjust the top surface of the box assembly for level
by inserting a shim between the lowest wall component and the
top surface of the MAGNUM base plate. (Figure 8)
Any gap created under the wall components during the
Shim leveling process must be lled with mortar to full bearing
against the base plate.
Step 5: Make sure that the rebox assembly has been set level
and square. Adjust as required while the mortar is still wet.
Make a nal inspection of all contact joints in the re-
box assembly to be sure they are properly sealed. Fill any and
all gaps in the assembly, as necessary, with the approved mortar.
Step 6: The MAGNUM comes with an eight inch (8”) thick
damper beam assembly, a four piece component group that is to
be assembled on top of the rebox.
The damper beam assembly consists of two long lintel
pieces and two short damper beam side pieces.
The two lintels are identical in shape, size and in
length, equal to the width of the MAGNUM replace model
that they serve.
Properly placed, one lintel is to sit on top of the rebox
back wall and ush with it; the other lintel sits ush with the
front of the rebox, spanning the rebox opening. These com-
ponents both sit on their narrow base so that their beveled face
points down and into the rebox interior. (Figure 15)
The damper side pieces are designed to sit on the
rebox side wall between the front lintel and the back lintel.
(Figure 14)
Each of the damper side pieces is designed specically
for its own side of the unit. When properly set, each damper
side piece ts ush with the outside face of the rebox sidewall
so that its interior bottom edge aligns with the interior angle of
the rebox side wall that it sits on. (Figure 14)
Be sure to mortar all damper beam components to the
top surfaces of the rebox.
Mortar the contact surfaces of each damper side com-
ponent where it meets the front and back damper beam assem-
bly lintel components.
FIGURE 13
FIGURE 15
ECI
MORTAR
TWO COURSES
BACK WAL L
FIRST DAMPER
SUPPORT IN
PLACE
DAM PER
CAST IR
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