The appliance must be installed on a non-combustible Masonry hearth extending the full width and depth
under the heater (including the vent pipe), and must extend an additional 16" (152mm) beyond the front
of the fireplace opening. Additional Ember Protection if required must extend 6" (150mm) in front of and
beyond each side of the Firebox Viewing Door.
Fireplace Dimensions
Mantel or Top Facing
Side Facing
Hearth
Adjacent
Wall
SIDE FACING AND ADJACENT
WALL MEASURED FROM
SIDE OF STOVE
MINIMUM 54” FROM BASE OF
UNIT TO CEILING
MANTEL DISTANCE
MEASURED FROM TOP OF
FIREBOX
Clearances to Combustibles
Minimum Clearance to Combustibles:
Side of Top to Sidewall 12" [305mm]
Side of Top to 3-1/2" [89mm] Max. deep Mantle Side Facing
8 -1/2" [216mm]
Top of stove to Mantle or Mantle Facing
13" [330mm]
Height of Ceiling above Stove's Base 54" [1.37m]
In Front of unit
36" [915mm]
Minimum Fireplace Size:
Width: at front
29-1/2" [750mm]
at rear
24" [610mm]
Depth
16" [405mm]
Height
21-1/4" [540mm]
Hearth must extend 16 inches from the
fireplace face
29 -1/2”
[750]
16”
[405]
24”
[610]
21-1/4”
[540]
16”
[405]
[ ] Dimensions are in mm
Non-Combustible Masonry fireplace hearth
Figure 10: TN40 INSA Fireplace opening specs.
8-1/2”
203mm
13”
380mm
12”
305mm
Figure 11: TN 40 INSERT CLEARANCES.
Installer Information
18
5055.538-A_080317-28
TN40 INS
