Raised hearth
for wood or
concrete installs
Flush Hearth
on Concrete
Foundations Only
Earthcore
Mortar
13
IBV Assembly Instructions (cont.)
Assembly Steps for IBV rebox and smoke dome:
Step 1:The IBV base plate can be set directly on a combustible
oor system. Set the base plate level in a bed of Earthcore Mortar
so that the base plate is in full contact with the underlying oor
system (Figure 4). Do not set the IBV base plate in span.
Raised and Flush Hearth Application:
For a “ush hearth” the IBV must be built upon a
concrete (noncombustible) support slab that has no wood
underpinnings. (Figure 5) For a “ush hearth” application
the IBV three inch (3”) thick base plate is omitted from the
assembly. The rebrick will then be mortared on the concrete
slab and the noncombustible hearth material will butt tight up
against it.
For a “raised hearth” (oor of the replace elevated
above the room’s oor) the IBV base plate can be set on a
structurally sound built up platform that is built to the desired
nished raised hearth height.
When calculating raised hearth height be sure to allow
for the three inch (3”) thick base plate plus the one and one-half
inch (1-1/2”) thick re brick oor in addition to the height of
the eld constructed raised platform. (Figure 6)
WARNING:
“Flush hearth” installations are possible only where the IBV
support is a concrete slab without any wood underpinning
as the base plate is omitted. Never place an IBV on a
combustible oor without the base plate.
Figure 4
Figure 5
Figure 6
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