Astria Craftsman STP2 Manual de Instruções de Instalação e Operação - Página 9

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Figure 15a - Firestop Thimble
SUPPORT SECTIONS (12S-8DM)
The chimney support section is a 4-strap 12" length of pipe. The height
of a vertical chimney pipe supported ONLY by the fireplace, must not
exceed 20 feet. Chimney heights above 20 feet must be supported.
20 FT.
(6.096m)
Figure 16 - Elbow Offset
ELBOW OFFSET INSTALLATION
Chimney weight above offset rests on return elbow. Straps must be
securely nailed to rafters or joists (see Figure 17).
To achieve desired offset, you may install combinations of 12", 18", 36" and
48" length of double wall pipe (see offset chart and Figure 18).
Maximum length of pipe between supports is 6 feet of angled run. A maxi-
mum of two 6 feet angled run sections per chimney system (see Figure 19).
2" (5.1cm)
Minimum
2" (5.1cm)
Minimum
Ceiling
Support
Straps
Figure 17 - Chimney Supports
126650-01B
VENTING INSTALLATION Continued
Thimble
38FST or
FST30
Firestop
12S-8DM
Support
Required
20 FT.
(6.096m)
Return
Elbow
Angled Firestop
Return
Elbow
OFFSET
4
9
12
14
17
21
22
26
26
31
34
38
39
43
46
48
Screws
RETURN
ELBOW
6' MAX
(15.2cm)
OFFSET
ELBOW
RETURN
ELBOW
6' MAX
(15.2cm)
OFFSET
ELBOW
Figure 19 - Typical Offset Installations
TYPICAL OFFSET INSTALLATIONS
Astria.US.com
RISE
CHIMNEY LENGTH
A
B
48" 36" 18" 12"
/
"
16
/
"
3
3
8
8
/
"
25
/
"
1
1
2
4
/
"
30
/
"
1
1
3
2
8
/
"
34"
3
8
/
"
39
/
"
1
5
1
8
4
/
"
46"
1
1
2
/
"
48
/
"
1
3
1
4
8
/
"
54
/
"
1
3
7
8
8
/
"
60"
1
1
3
8
/
"
63
/
"
1
3
3
4
4
/
"
69"
1
1
3
4
/
"
75
/
"
2
5
5
8
8
/
"
77
/
"
1
1
7
7
8
8
/
"
84
/
"
1
1
3
1
4
2
/
"
87
/
"
2
1
3
3
4
4
/
"
93
/
"
2
7
3
8
8
B
A
Figure 18 - Raise and Offset
6' MAX
(15.2cm)
CEILING
SUPPORT
PIPE
V12S-8DM
6' MAX
(15.2cm)
6' MAX
(15.2cm)
1
2
1
2
1
1
RETURN
ELBOW
OFFSET
ELBOW
RETURN
ELBOW
6' MAX
(15.2cm)
9