Owner`s manual
IIO
WTO
IJHTHHMINf.' IF
fJ
.OOR PRlJT
I;.
T TION /tI
AIR
HIAI.S AHf.'A CCEPTA
IlL
,.;
,f
All floor protection materials must be non-combustible (i,c .• metals. brick, stone, mineral fiberboard. erc.).
Any
organic materials (i.e., plastics. wood. paper products, etc.] are combustible and must not be used.
,f
The floor protector specified may include some fo
rm
of
thermal designation such as Revalue (thermal
resistance).or K-factor (thermal conductivity), or
Cofac
tor (thennal conductance). 3/8" thick rock bo
ard
or
min
er
al
wool bOHnl lllccls
th
ese
1l
1,ee ifieHlioll'l.
TIle technical means
of
determining
if
a proposed alternate Iloor protector meets requirements listed in the
appliance man
ual
is to follow this procedure:
a) Convert spccificetion ro Revalue:
• Revalue given - no conversion needed.
• K-value is given with a required thickness
(
1)
in inches:
R
-I
/K
XT
(
I)
• Ccvalue is given:
R - lie (2)
b) Determine the
({
-vallie
of
the proposed alternate
l100
r protector.
• Use the formula in step
(0) to couvert values not expressed as "R."
•
For multiple layers. add Revalues
of
each Inyer to determine overall R-valuc.
e) If
the overall R-value
of
tbc system is greater than the Revalue of the speci
fi
ed floor protector, the
alternate is
a
cc
eptable.
EXAMPLE:
The specified
fl
oor protector should be
y.,
inch thick material with a K-vnlue
of
.84. The proposed alternate is 4"
brick with a C-valuc of 1.25 over
liS" mineral boardwith a K-value
of
.29.
Stc l' (8):
Use formula
(I)
to convert specification to Rcvuluc. R +
11
K X T +
11
.84 X .75 + .893
,
Step (h): Calculate R of proposed system.
4" brick
ofC
'" 1.25
Rbrick - IIC -
1/1.25 - .80
1/8' mineral board
of
K - .29
Rmin.bd. -
1/.29 X .125 - .431
T otal R- Rbrick + Rmincral board -
.8 -t .431- 1.231
Tl
lt"f
lllll
i
('
ol
ll
i
llf
ll
lll
f r - C - !J.Y
(hr) (A2) (F)
T l
lf
f umt COll ti
llf
livlly - k - (11 111)Cin)
(hr) (A
')
(
1-")
..
"'"
(hr) (ft)
(f)
T hr TlIIII!
l{
r,I,
lll
llf
r · R -
(ftl)
(lid
(0
Btu
Step (c): Compare proposed system
of
R
of
1.231 10 speci
fi
ed R
of
.893. Since proposed system R is
greater than required, the system is acceptable.
Simply
Plll.
3/
S"t
hick rock board or mineral wool board
will
meet Ihcsc speci
fi
cations.
MA
(iN
UMZC MANUA\. -
~
2009
M<;l; ••
16