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125160-01_D
27
FIREPLACE INSTALLATION
Continued
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
46. The top surfaces of all dome parts should be flat and level.
MM-63 Assembly Instructions:
1. Place the Fireplace hearth base on top of your non-combustible
floor or metal base. For concrete slabs, supporting floor needs
to be rated at ASTM 90.
2. a) Combustible Floor Installations:
Mix a batch of mortar and
adhere hearth slabs to the cement board (see Figure 32, Page
22). All-thread rods should stick up through the holes on the
hearth slabs.
b) Non-combustible Floor Installations:
Draw an outline
footprint 67” x 28” for the MFP-63 footprint and mark the
centers for the rebar locations using the hearth slabs as
templates. Drill holes for rebar 4 inches into the concrete slab
and secure the 10 pieces of 12” long rebar with epoxy.
28
"
(712 mm)
67
"
(1702 mm)
Figure 48 - Positioning Hearth Base for MM63
Center Hearth 2
nd
Left Side Hearth 3
rd
Right Side
Hearth 1
st
Apply mortar
between joints
Lower Dome Sides (Rating
Plate faces inside)
Figure 45 - Attaching Lower Dome Sides (
MFP-39/44/49)
Upper Dome Sides
Upper Dome
Front/Rear
Center of chimney hole is
offset towards the rear.
Figure 46 - Attaching Upper Dome & Sides (
MFP-39/44/49)
Figure 47 - Attaching Top Dome (MM39-44-49)
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 47).
12-
1
/
2
"
(318 mm)
10
"
(254 mm)