Installation guide

19
WARNING: Combustible oor installations are limited to TFS
models only.
8” Metal Base (TFS-63)
The TFS-63 Burntech® Metal Base (TFSB63) ensures the
minimum eight inch clearance above combustible ooring is
maintained.
A layer of 1/2” minimum Concrete Board is required on the
top and mid section below as shown in Figure 24. The required
sizes are shown in the table below.
 IMPORTANT:
Remember to tighten up nuts below the oor after replace
installation in order to take up any slack in the threads.
Hearth Ember Shields:
Metal safety stripping is required between the front of the
Fireplace Hearth and Hearth Extension (not supplied). A 26
gauge galvanized 4” wide metal strip can be used. The length
needs to extend 2 inches beyond each side of the replace
opening. If two strips are used, make sure they overlap at
least two inches in the middle. The strip is placed about 2” into
the underside of the platform at the front.
Note: When using an on-site constructed hearth extension,
you may use a sand-cement grout between the hearth and
extension instead.
6” Metal Base (TFS-33/39/44/49)
The Burntech® Metal Base ensures the minimum six inch
clearance above combustible ooring is maintained.
A layer of 1/2” minimum Concrete Board is required on the
top and mid-section of the Metal Base as shown in Figure 25.
The required sizes are shown in the following table:
Note: The insulation (concrete) board chosen must meet a
thermal conductivity rating ≥ 0.4 Btu-in/hr-ft²-F°.
1/2” Thick Cement Board Dimensions
Model A1 A2 B1 B2
TFS-33 37” 28” 30” 23”
TFS-39 43” 28” 36” 23”
TFS-44 48” 28” 41” 23”
TFS-49 53” 28” 46” 23”
6” Metal Bases
Model P/N
TFS-33 TFSB33
TFS-39 TFSB39
TFS-44 TFSB44
TFS-49 TFSB49
1/2” Thick Cement Board Dimensions
Model A1 A2 B1 B2
TFS-63 67” 28” 60” 23”
Combustible Floor Installations
Figure 25
TFS-33/39/44/49: 6” Metal Base Assembly
26 ga. galv.
Hearth Ember Shields
Anchor Bracket All-Thread Rods are secured to the bottom ange
of the Metal Base with eight (8) at washers (2”OD x 9/16”ID x
0.10”) and eight (8) 1/2-13 UNC Nuts.
Place Cement Board
on top rails of platform.
Place Cement Board on
top of cross-members.
Eight (8) All-Thread Rods are secured to the top ange
of the Metal Base with sixteen (16) at washers (2”OD x
9/16”ID x 0.10”) and sixteen (16) 1/2”-13 UNC Nuts.
A2
A1
B2
B1
Figure 24
TFS-63: 8” Metal Base Assembly
Place 1/2” cement
board on top of
cross members.
Place 1/2” cement board
on top rails of platform.
Hearth Ember Shields
26ga. galvanized
Anchor Bracket All-Thread Rods are secured to the bottom ange
of the Metal Base with eight (8) at washers (2”OD x 9/16”ID x
0.10”) and eight (8) 1/2-13 UNC Nuts.
Ten (10) All-Thread Rods are secured
to the top ange of the Metal Base with
twenty (20) at washers (2”OD x 9/16”ID x
0.10”) and twenty (20) 1/2-13 UNC Nuts.
A1
A2
B2
B1