Alternate Floor Protector - New Buck Corporation 74 Manual

Optional
Fire Code Sheet Rock
And Metal Fire Stop
Ceiling
"A MINIMUM OF 30.5"
30.5"
FROM
TOP OF UNIT TO TRIM OF
FIGURE 14
7. Next construct the hearth extension out of non-combustible inorganic building materials as follows:
a) The hearth extension must extend 16" in front of the rough framed opening on the 51ZC.
b) The hearth extension width must be at least 37 1/2".
c) The hearth extension must be made of brick 2" thick, a listed "Hearth Extension" or "Floor Protector", or
a hearth extension made of non-combustible inorganic material with a K* factor of:
ALTERNATE FLOOR PROTECTORS MATERIALS
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
NOTE: Follow building and fire codes
2 In.
Min.
RADIATION
SHIELD
Chase
Enclosure
CHASE ENCLOSURE AND CORNER LOCATION FRAMING
2
K = 2.5 BTU ((HR) (ft ) (
as follows:
Required thickness = .9375.0
= 3/8 inch
for each individual state.
15FT.
MAX.
34 3/4"
37 1/2"
o
F/in.)) or R-Value R=0.6 See Page 6 for formula.
o
x 2 inch
Page 16
CAUTION: Refer to chim-
ney manufacturer's instruc-
TOPPER
tions for assembly and disas-
sembly of chimney parts. Be
STORM COLLAR
sure to follow chimney
instructions for proper clear-
ROOF FLASHING
ances to combustibles and
proper air spacing required.
TRIPLE WALL PIPE
2 " X 4" STUDDING
USE FIRE CODE SHEET ROCK
OPTIONAL METAL FIRE STOP
RADIATION SHIELD
2" X 4" STUDDING
A SINGLE HEADER MUST BE
INSTALLED ABOVE CABINET
THESE MEASUREMENTS
ARE CRITICAL
16"
WARNING: Install the hearth protec-
tor only as specified. The hearth exten-
sion must extend a minimum of 16" in
front of the fireplace opening and must
be 37 1/2" wide minimum.
(See Page 5)