24
29. Rear walls are staggered on every row as shown in
Figures 45 and 46.
30. After the third row
of firebox is complete, install Downdraft
Diverter sections (MFP63-4) as shown in Figure 47.
31. After the last side walls are installed, place #3 rebar (10
each, 36 inch long) vertically through the cells, into the
holes in the hearth, adjacent to the rebar and/or all-thread
sticking up from the hearth and fill all cells with Ready-Mix
concrete mix.
32. Set the Lintel and Lower Rear Dome in place as shown
in
Figure 48
. Check that all is level. If you need to
make adjustments, use shims between the lowest
wall component and the top surface of the base plate.
Once leveled, fill any resulting gaps with mortar.
Important:
Adjustments can only be made while the mortar
is still wet when correcting for squareness and leveling.
33. Assemble Dome Sides (MFP63-7) as shown in
Figure
49
. The beveled face lines up with the inward angles
of the lintel sides. Top surfaces should be level.
34. Position Middle Domes (MFP63-10) so that outer faces
are flush to the lower dome as shown in
Figure 50
.
35. Carefully install Dome Middle Sides (MFP63-8) as shown
in
Figure 50
.
Figure 46
Rear Wall (long)
Rear Wall
(short)
Stagger positions of rear wall
Figure 45
Rear Wall (long)
Rear Wall
(short)
Apply
mortar
MFP-63 Fireplace Assembly
Figure 47
Downdraft
Diverter (short)
Downdraft
Diverter (long)
Figure 48
MFP63-6
Lintel
MFP63-5
Lower Rear
Dome
Fill all cells with
mortar mix.
Figure 49
Rating Plate
MFP63-7
Dome Side