Osburn MATRIX 2700 INSERT, Инструкция по установке и эксплуатации

Страница: 32 / 60

Page 32
Installation and Operation Manual - Matrix 2700 Insert
ENGLISH
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.
Example:
Common brick K value = 5
Thickness = 4»
R value = Thickness/K = 4/5 = 0.8 Durock K value =1.92
Thickness = 1»
R value = Thickness/K = 1/1.92 = 0.52
Total R value = .8 + 0.52 = 1.32
9.3 Minimum Masonry Opening and Clearances to Combustibles
COMBUSTIBLE MANTEL SHELF
COMBUSTIBLE
TOP SURROUND
C
O
M
BU
S
T
IB
L
E
S
ID
E
S
URR
O
UN
D
A
D
J
A
C
E
N
T
S
ID
E
W
A
L
L
FLOOR PROTECTION
J
I
H
Q
G
F
K
L
O
P
MINIMUM
CLEARANCES
F 19" (483 mm)
G
9 ½" (242 mm)
H 12" (305 mm)
I 12" (305 mm)
Q 84" (213 cm)
MAXIMUM
THICKNESS
O 5" (127 mm)
P
12" (305 mm)
MINIMUM MASONRY
OPENING
J 27
⅛
" (690 mm)
K
17
31 ¾" (806 mm)
L
18
22
⅛
" (562 mm)
17
If a fresh air intake is required, it is recommended to add at least 4" to the width of the minimum opening of the hearth.
18
If projection kit is used L = 20
⅛
" or 18
⅛
"
, otherwise L = 22
⅛
".