Osburn 1700-I Owner's Manual

Page 16
Product Specication Manual - Osburn 1700-I
ENGLISH
MATERIAL CONDUCTIVITY (K)
PER INCH
RESISTANCE (R)
PER INCH THICKNESS
Ceramic tile 12.5 0.008
Concrete 1.050 0.950
Mineral wool insulation 0.320 3.120
Limestone 6.5 0.153
Ceramic board (Fibremax) 0.450 2.2
Horizontal still air (1/8" thick)
1
0.135 0,920**
Exemple:
Required floor protection R of 1.00. Proposed materials: four inches of brick and one inch of
Durock® board:
Four inches of brick (R = 4 x 0,2 = 0,8) plus 1 inch of Durock® (R = 1 x 0.52 = 0.52).
0.8 + 0.52 = 1.32.
This R value is larger than the required 1.00 and is therefore acceptable.
In the case of a known K and thickness of alternative materials to be used in combination,
convert all K values to R by dividing the thickness of each material by its K value. Add R values
of the proposed materials as shown in the previous example.
Exemple:
K value = 0.75
Thickness = 1
R value = Thickness/K = 1/0.75 = 1.33
1
Horizontal still air can’t be «stack» to accumulate R-values; each layer must be separated with another non-combustible material.

Osburn 1700-I Specifications

General

Brand	Osburn
Model	1700-I
Category	Indoor Fireplace
Language	English