11
Fire Brick Installation
Fire Brick Installation:
The manufacturer requires that the Vent-Free firebox
be lined with a minimum one and one-eighth (1-1/8”) thick
rated fire brick. The pattern for the fire brick lining is an
owner option. Standard N or S -Type brick mortar is a suitable
fire brick mortar for the Vent-Free. Add a small portion of
Earthcore mortar to make it a sticky consistency with a 1/4”
notch trowel bed joint. Because of different climates, the
use of good masonry practices for your area should also be
considered.
Hint:
Before application, wet down the surface area, then
apply water dipped firebrick for improved adherence.
All required through-wall accesses (gas and electrical
line feeds and combustion air supply access holes) should be
drilled before the required fire brick lining is installed.
It takes a total of about five gallons of mortar mix
(dry measure) to fire brick line a Vent-Free.
Face joints of one quarter inch (1/4”) to three-eighths
inch (3/8”) give a good appearance to the finished brick-work
however, larger face joint dimensions are also acceptable.
Step 1
. Wet mop the inside of the Vent-Free with a damp
sponge to remove dust and loose particles from the interior
before installing fire brick.
Step 2.
Start the fire brick at the front edge of the floor of the
Isokern firebox, proceeding inward toward the back.
Step 3.
Next, apply fire brick to the back wall of the unit
starting at the bottom of the back wall and working upward to
the top of the back wall.
Step 4.
Finally, set the side wall fire brick by starting at the
front edge of the unit’s side wall and working inward toward
the back wall fire brick.
Earthcore makes no claims as to the perforance
of fire brick or fire brick mortars.
½“ Expansion
Gap
Fire brick floor
(built first)
½“ Expansion Gap
(No Gaps)
Firebrick Floor &
Back Wall (built first)
Summary of Contents for VF-36
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