22
14. MFP-39/44/49:
After the
third row
of firebox is complete,
place #3 rebar (36” long) vertically through the cells until
they reach bottom. Position them adjacent to the rebar or
all-thread sticking up from the hearth.Figure 34.
15.
Install Downdraft Diverter and final row of Side Walls
(Fig.35). All components must be level. Mix approx. 2
cu. ft. of Ready-Mix Concrete. Insert 28” rebar vertically
through the cells, into the holes in the hearth, adjacent to
the rebar and/or all-thread sticking up from the hearth. Fill
all cells with Ready-Mix Concrete mix.
16. Set the Lintel, T-Bar, Lintel Front and Lower Rear
Dome as shown in
Figure 36
. Check that all is
level. If adjustments are needed, use shims and
fill gaps with an appropriate amount of mortar.
Note:
Although you are cautioned to use MASON-LITE
mortar sparingly because it does have such holding power,
you should look over the firebox assembly at the end and fill
in any gaps, especially joint connections, with the mortar.
Important:
Adjustments can only be made while the mortar
is still wet when correcting for squareness and leveling.
17. Assemble Lower Dome Sides as shown in
Figure 37
. The
beveled face lines up with the inward angles of the lintel
sides. Resulting top surfaces should be level.
18. Verify that the Smoke Dome side, front and rear walls are
aligning correctly and that mating surfaces are smooth
and uniform. Make sure connections are covered with
an adequate amount of mortar. Remember that you have
the option of using shims but they must be removed and
any holes filled. Make any adjustments to the fireplace
alignment before continuing to the next step.
19. Assemble Upper Dome and Dome Sides as shown in
Figure 38
. The top surfaces of all dome parts should be
flat and level.
20. Finally, set the Dome Top into position. Be sure that it is
flush in every direction as you place it on the crest of the
smoke dome wall assembly.
Note:
The chimney hole on the Dome Top is not centered
from front to back - it should be offset closest to the rear of the
fireplace. The front of the dome is indicated by a marker (see
Figure 39
)
.
MFP-39/44/49 Fireplace Assembly
Figure 35
Downdraft Diverter
(Smoke Shelf)
Figure 37
Lower Dome Sides (Rating
Plate faces inside)
Figure 34
Add rebar to cells
and fill with mortar.
12 inch
rebar or
all-thread
Figure 38
Upper Dome Sides
Upper Dome
Front/Rear
Figure 36
Lintel
Lower Rear
Dome
T-Bar
Lintel
Front
MFP-39/44/49
Figure 39
Center of chimney hole is
offset towards the rear.
Marker indicates
front of Dome Top.
