11
Fireplace Assembly Procedures
Place the Burntech® fireplace hearth on the floor where the
fireplace is to be installed. For concrete slabs, supporting
floor needs to be rated at ASTM 90.
Draw an outline of the hearth area based on the dimensions
shown in
Figure 12
. Position Hearth slabs and mark rebar
center locations. Drill 4 inches into concrete slab and secure
the 8 pieces of 12 inch rebar with epoxy.
For other than
concrete slabs, draw an outline of the hearth area based on
the dimensions in Figure 5 taking special consideration on
the position of where the all-thread studs will be located in
relation to the anchoring locations.
All-thread rods should
stick up through the holes on the hearth slabs.
Figure 12
Model
W
GBVS-39
43”
GBVS-44
48”
GBVS-49
53”
W
28”
Apply mortar
between joints
Left Side Hearth 2nd
Right Side Hearth 1st
12 inch rebar
Mix a batch of mortar and prepare Right Side Hearth bottom
surface to be bonded as shown in
Figure 13
.
Align Right Side Hearth to the outline created. The overall
width should allow for an approximate gap of 1/8” between
slabs for the additional mortar to unite the remaining slab.
Check for surface flatness, level if necessary.
Figure 13
1/2” away
from edges
1/2” mortar
bead (typical)
Hearth section shown prepared
for Right Side position
Apply mortar bead to
all mating surfaces.
Apply mortar to the remaining Hearth except this time
apply beading on surface to be facing floor as shown in
Figure 14
.
1.
2.
3.
4.
5.
Figure 14
Hearth shown prepared
for Left Side position
Before installing side walls, confirm placement of outside
combustion air access (if required), this can be installed
either side depending on which side is accessible to outside
combustion air (all diagrams in this manual show the
combustion air inlet hole on the right side). Prepare side
wall and rear wall mating surfaces with the prepared mortar
and begin assembly.
Figure 15
Side Wall shown prepared for Right
Side Air Access.
For Left Side, bead opposite side.
1/2” AWAY
FROM EDGES
Keep the assembly of the next sections of the firebox side
walls moving up, keeping components moist, mixing mortar
as you need it and threading the mortar appropriately as
you stack each section, one onto the next. Constantly check
for squareness and levelness while building each course of
block. As you complete each section, make certain that you
adhere the mortar at each and every joint.
Figure 16
Combustion Air Access
Right or Left (Right shown).
Apply
mortar
Apply mortar
Side Wall
Rear Wall
Side Wall
6.
7.
