Astria Craftsman STP2 Handbuch für Installation und Betrieb - Seite 6

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FRAMING
1. Frame opening for fireplace using dimensions shown in Figures
6 and 7.
2. If fireplace is to be installed directly on carpeting, tile (other than
ceramic) or any combustible material other than wood flooring,
fireplace must be installed upon a metal or wood panel extending
full width and depth of fireplace.
1" (2.5 cm) Min.
To Combustibles
21
5
/
"
16
(54 cm)
42
5
/
(108 cm)
Figure 6 - Framing Clearances
3. Set fireplace directly in front of this opening and slide unit back
until nailing flanges touch side framing.
4. Check level of fireplace and shim with sheet metal if necessary.
5. Before securing firebox to prepared framing, ember protector
(provided) must be placed between hearth extension (not sup-
plied) and under bottom front edge of firebox to protect against
glowing embers (see Figure 8 and Hearth Extensions). If firebox
is to be installed on a raised platform, a Z-type ember protector
(not supplied) must be fabricated to fit your required platform
height (see Figure 7). The ember protector should be made of
sheet metal (28 gauge minimum) to prevent corrosion.
6. Using screws or nails, secure fireplace to framing through flanges
located on sides of fireplace (see Figure 9).
Figure 7 - Framing Firebox with "Z" Type Ember Protectors
6
FIREPLACE INSTALLATION Continued
12
/
" Dia.
3
8
(31.4 cm) Outer Pipe
2" (5.1 cm) Min.
Clearance From Outer
Pipes to Combustibles
24"
(61 cm)
12"
(31 cm)
"
8
"Z" Type
Ember Protector
(Not Supplied)
Platform Must be
Solid, Flat and
Fully Supported
www.Astria.US.com
Ember
Protector
(Typ. 2 of 2)
Figure 8 - Ember Protectors
1/2" (1.27 cm)
Minimum to
Combustibles
Nailing
Flanges
Prepared
Framing
Figure 9 - Nailing Flanges
HEARTH EXTENSIONS
A hearth extension projecting a minimum of 20" in front of and a
minimum of 12" beyond each side of fireplace opening is required
to protect combustible floor construction in front of fireplace. Fab-
ricate a hearth extension using a material which meets the following
specifications: a layer of noncombustible, inorganic material having
a thermal conductivity of k = .84 BTU IN/FT
thick. For example, if material selected has a k factor of 0.25, such
as glass fiber, the following formula would apply:
0.25 x 1.0" = 0.30" thickness required
0.84
Thermal conductivity "k" of materials can be obtained from manu-
facturer or supplier of noncombustible material.
If hearth extension is to be raised, a "Z" type ember protector must
be used (see Figure 7 and Figure 11, page 7).
WARNING: Hearth extension is to be installed
only as shown in Figure 10, page 7.
1/2"
(1.2 cm)
Max.
Nails or
Screws
HR °F (or less) at 1"
2
126650-01A