Hearth And Floor Protection Requirements; Minimum Clearances - SCAN DSA 4 Instructions For Use Manual

4.3 Hearth and floor protection requirements:

The floor in front of the fireplace needs thermal protection of ¾ inch (19 mm) thick mineral fiber
millboard with a value of k=0.84 BTU/IN FT
of the fireplace extending out 24 inches (610 mm).
If the floor is 3½ inches (89 mm) below the level of the fireplace, the k=0.84 thermal protection
only needs to be ½ inch (12.5 mm) thick extending out 24 inches (610 mm).
If the floor is a full 7 inches (178 mm) below the bottom opening of the fireplace, the floor only
needs to be covered with non-combustible material, minimum ⅜ inch (10 mm) thick extending
out 18 inches (455 mm).
To substitute alternate insulation material, you need to know the "k" factor for that material. To
calculate the required thickness for the alternate material; use the following formula.
__"K"__
* 0.50 =
0.45
Example: "k" value of brick = 5
___5___
* 0.50 = 5.5 inch
0.45

4.3.1 Minimum Clearances:

Masonry
Fireplace
WARNING: Minimum clearance to combustibles must be observed when installing this
fireplace. The listed clearances for your SCAN DSA fireplace are determined in laboratory tests.
2 o
HR F when the floor is level with bottom opening
Of alternate material.
thickness of alternate
material in inches.
5.5 inches of brick is required to meet
the requirement.
A = Sidewall to insert
B = Mantel to insert
with mantel shield
C = Top facing
D = Side facing
E = Hearth (Front) USA
E = Hearth (Front) Canada* 18" / 455 mm
F = Hearth
*Does not include the distance the insert
sticks out on the hearth 3" / 75mm.
See heart requirements above.
12" / 305 mm
18" / 455 mm
11" / 280 mm
4" / 100 mm
16" / 405 mm
8" / 200 mm
Page 8