(NO GAPS)
FIRE BRICK FLOOR
1/2" GAP
EXPANSION
(BUILT FIRST)
1/2" GAP
EXPANSION
FIRE BRICK
FLOOR AND
BACK WALL
(BUILT FIRST)
19
Assembly Instructions - Fire Brick Installation
Fire Brick Installation:
The manufacturer requires that the MAGNUM
Series replace rebox be lined with a minimum one and one-
eighth (1-1/8”) thick rated re brick. The pattern for the re
brick lining is an owner option. Standard N-Type brick mortar
is a suitable re brick mortar for the Standard replace and
good masonry practices should be followed.
All required through-wall accesses (gas and electrical
line feeds and combustion air supply access holes) should be
drilled before the required re brick lining is installed.
It takes a total of about ve gallons of S-Type brick
mortar mix (dry measure) to re brick line a MAGNUM
replace.
Face joints of one quarter inch (1/4”) to three-eights
inch (3/8”) give a good appearance to the nished brickwork
however, this is just a suggestion and other face joint dimen-
sions are also acceptable.
Step 1. Wet mop the inside of the MAGNUM replace with
a damp sponge to remove dust and loose particles from the
interior before installing re brick.
Step 2. Start the re brick at the front edge of the oor of the
Isokern rebox, proceeding inward toward the back.
HINT: Dip each rebrick into water before applying.
Step 3. Next, apply re brick to the back wall of the unit start-
ing at the bottom of the back wall and working upward to the
top of the back wall.
Step 4. Finally, set the side wall re brick by starting at the
front edge of the unit’s side wall and working inward toward
the back wall re brick.
Isokern makes no claims as to the performance
of re brick or re brick mortar(s). It is typical for heat
stress cracks to appear in the re bricks in wood burning
replaces.
FIGURE 24
FIGURE 23
FIGURE 22
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