New Buck Corporation 85 User Manual
Page 26
SECTION V
FREE-STANDING MOBILE HOME
INSTALLATION
FOR MINIMUM CLEARANCES SEE PAGE 21.
FLOOR PROTECTION
Floor protector must be 3/8" minimum thickness non-combustible material or equivalent.
With the floor protector or hearth extension material specified as one layer of 2" thick brick
with a K* factor of 5.0, you may use alternate materials as long as the K* factor (s) is calculated
as follows:
FORMULA: Required thickness = (K of alternate material/K of millboard) X (thickness
of millboard)
EXAMPLE: An alternate inorganic non-combustible millboard with a K* of .9375
would require a thickness as follows:
Required thickness = (.9375/5.0) x 2 in.
= 3/8 inch
K* FACTORS OF ALTERNATE MATERIALS
Material
K
Required
Thickness
Ceroform
126
.21
1/8"
Limestone
8.0
3.2"
Concrete
8.0
3.2"
Sandstone
13.0
5.2"
Marble
18.0
7.2"
Hearth extension or floor protector thickness above four (4) inches are generally not acceptable
due to cost, floor load capacity, and look. The alternate we recommend is using Ceroform No.
126 millboard 1/8" minimum and putting any type decorative brick or stone (any thickness) on
top of it.
* The K* factor represents the thermal conductivity of a material and is the time rate of heat
flow through a homogeneous material under steady-state conditions, through unit area, per unit
temperature gradient in the direction perpendicular to a surface.
CHIMNEY
These models are designed for connection to Simpson Duravent, Metal Fab and Ameritec
HT-103 2100 deg pipe.
24