Hampton Direct Wood Insert HI200 - Manual (Page 8)

HI200 Hampton Wood Cast Insert 8
Clearance diagram for installations
INSTALLATION
Side and Top facing is a maximum of 1.5" thick.
Floor protection must non-combustible, insulative
material with an R value of 1.1 or greater.
* If the hearth extension is fl ush with the fl oor (F)
it must extend 19.5" in front of the body face
(E).
Note: Hearth Extension Width (G) is meas-
ured from edge of fuel door to side of
hearth.
** A non-combustible mantel may be installed
at a lower height if the framing is made of
metal studs covered with a non-combustible
board.
MASONRY AND FACTORY BUILT FIREPLACE CLEARANCES
The minimum required clearances to combustible materials when installed into a masonry or factory built fi replace are listed below.
Adjacent Mantle** Top Side Minimum Minimum Minimum
Side Wall (to Top) Facing Facing Hearth Hearth Hearth Side
(to Side) (to Top) (to Side) Extension Thickness* Extension
A B C D E F G
15" (381mm) 20" (508mm) 14" (356mm) 7-3/8"(187mm) 16" (406mm) [US] 1-1/2" (38mm) 6" (152mm) [US]
18" (457mm) [CAN] 8" (203mm) [CAN]
HOW TO DETERMINE IF ALTERNATE
FLOOR PROTECTION MATERIALS ARE ACCEPTABLE
The specifi ed fl oor protector should be 3/8"
(18mm) thick material with a K - factor of
0.84.
The proposed alternative is 4" (100mm) brick
with a C-factor of 1.25 over 1/8" (3mm) mineral
board with a K-factor of 0.29.
Step (a):
Use formula above to convert specifi cation
to R-value.
R = 1/k x T = 1/0.84 x .75 = 0.893.
Step (b):
Calculate R of proposed system.
4" brick of C = 1.25, therefore
Rbrick = 1/C = 1/1.25 = 0.80
1/8" mineral board of k = 0.29, therefore
Rmin.bd. = 1/0.29 x 0.125 = 0.431
Total R = Rbrick + Rmineral board =
0.8 + 0.431 = 1.231.
Step (c):
Compare proposed system R of 1.231 to
specifi ed R of 0.893. Since proposed system
R is greater than required, the system is
acceptable.
DEFINITIONS
Thermal Conductance:
C = Btu = W
(hr)(ft 2 )( o F) (m 2) )(K)
Thermal Conductivity:
k = (Btu)(inch) = W = Btu
(hr)(ft 3 )( o F) (m)(K) (hr)(ft)( o F)
Thermal Resistance:
R = (ft 2 )(hr)( o F) = (m 2 )(K)
Btu W
Floor Protection
Please check to ensure that your fl oor protection
and hearth will meet the standards for clearance
to combustibles. Your hearth extension must be
made from a non-combustible material.