mFi MASON-LITE MFP- 75, Instructions Manual

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13
MFP-75 Fireplace Assembly
MFP-75 Assembly Instructions:
1. Place the Mason-Lite 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. All-thread rods should stick up through the holes on
the hearth slabs.
b)
Non-combustible Floor Installations: Draw an
outline footprint 79” x 28” for the MFP-75 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 4 pieces of 12” long rebar
with epoxy.
3. Mix a batch of mortar and prepare bottom surface of Right
Side Hearth to be bonded, then lower the piece into place on
the outline created before. Align lower Right Side Hearth on
the outline created. The 79” width dimension allows for an
approximate gap of 1/8” between slabs for the additional
mortar to unite the remaining slabs. Continue process for
remaining hearth sections while moistening and adding mortar
between joints at slab ends.
4. Apply mortar in like manner to the Center Hearth and place next to the
Right Side Hearth. Check that surface is LEVEL and use shims if
necessary.
5. Apply mortar to the remaining Hearth except this time apply
beading on surface to be facing floor.
6.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).
7.Prepare side wall mating surfaces with the prepared
mortar.
8. 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 every
joint.