fireplace installation

Continued

you can nudge them in between openings to achieve the precision you need in making component adjust- ments. Once you have removed any shims, you will want to cover any gaps that may have resulted with the mortar.

Assembly Instructions

1)Place the hearth base on top of your non-combus- tible floor or metal base. For concrete slabs, support- ing floor needs to be rated at ASTM 90.

a)Combustible Floor Installations: Mix up a batch of mortar and adhere hearth slabs to the cement board (see Figure 32 & 33, page 21). All- thread rods should stick up through the holes on the hearth slabs.

b)Non-combustible Floor Installations: Draw an outline of the hearth area based on the dimen- sions shown in pages 4 and 5. Position Hearth slabs and mark rebar center locations. Drill 4 inches using Roto-hammer into concrete slab and secure the 8 pieces (10 pieces for MM63) of 12" long rebar with epoxy. See Figure 34 & 35.

2)Mix a batch of mortar and prepare Right Side Hearth bottom surface to be bonded as shown in Fig- ure 36.

3)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.

Left Side Hearth 2nd

Right Side Hearth 1st

Apply mortar

between jointsTwo 26 ga. Ember Protectors required

28"

 

Model

W

 

MM33

37"

W

MM39

43"

MM44

48"

 

12" Long Rebar

MM49

53"

Left Side Hearth 3rd

Center Hearth 2nd

Right Side

Hearth 1st

Apply mortar between joints

67" 28"

Figure 35 - Positioning Hearth Base for MM63

Hearth section shown prepared for Right Side position

 

1/2" MORTAR

APPLY MORTAR

BEAD TYPICAL

BEAD TO ALL

1/2" AWAY

MATING SURFACES

FROM EDGES

Figure 36 - Preparing Hearth Base

4)Repeat step 3 for Left Side Hearth.

5)Before installing side walls, confirm placement of outside air kit (if required). This can be installed ei- ther 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 as shown in Figure 37.

Side Wall shown prepared for Right

Side Air Access.

For Left Side, bead opposite side.

1/2" AWAY FROM EDGES

Figure 34 - Positioning Hearth Base For

MM33,39,44,49

Figure 37 - Preparing Side and Rear Wall Pieces

125160-01A

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