16
Assembly Instructions - 86072 - 60
Step 5:
Continue stacking the remaining three courses of back
wall. Be sure to reverse the positions of the 38-1/2” # 67 and
the 22-1/4” # 67 in each successive course. In this way, the
butt joint where the two # 67 components meet are staggered
from course to course. The overall width dimension at the
back of the firebox should be 73-1/2” including the sidewalls.
(Figure 20).
Step 6:
Steel angle 4” x 6” x 5/16”, one required, 73-1/2” long
to span firebox opening.
This steel angle sits on top of the uppermost side wall
component with the four inch leg in the horizontal position.
To avoid a thickness problem with the placement of the
steel angle it is necessary to cut a notch in the top Side wall
component where the angle is to sit. This notch should be cut
approximately 5/16” deep. The notch should start at the front
face of the side wall component (at both the left and right hand
walls) and run to a point 4” back toward the firebox (Figure
21).
The steel angle sits in this notch. The six inch leg of
the steel angle is in the vertical position and is to be located in
alignment with the front of the firebox. The ends of the steel
angle should not protrude beyond the outer firebox side walls
(Figure 21). Mortar between the steel and the notch in the top
of the side wall is not needed.
Step 7:
Damper support (front & rear), Part # 69, four required,
to be field cut to fit.
Bevel cut one end of each of two # 69 damper
supports to 35-1/2” in length from the long point of the bevel
cut to the un-cut square end. (Figure 22). The long point of the
bevel cut is to be at the top of the damper Support
For best results a 15˚ bevel angle is suggested.
Step 8:
Bevel cut one end each of two # 69 damper supports
to 38” with the long point of the bevel at the bottom of the
damper support. The bevel angle must be at the same angle –
in this case, 15 degrees - to match with the bevel angle of the
other damper supports already cut in Step 7 (Figure 23).
Step 9:
Set the cut damper supports along the front and along
the rear of the firebox using one of each of the cut pieces (one
with the long point at the top of the piece and one with the long
point at the bottom of the piece) together as pairs.
Note:
Be sure to put Earthcore Mortar on the contact surfaces
of the vertical joints where the components connect. 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. Fill any and all gaps in the assembly, as
necessary, with the approved mortar.
FIGURE 19
73 ½”
38”
”
35 1/2”
DISCAR
D
DISCAR
D
15 DEG.
ANGL
E
4”
5/16”
FIGURE 20
FIGURE 21
FIGURE 22
FIGURE 23
Содержание Magnum 86072-60
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Страница 40: ...40 DM Chimney System Lateral Support cont FIGURE 81 FIGURE 82 ...
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