15
VCG Designer Series • DSR36 Installation Manual • 4012-130 • Rev A • 02/20/15
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling firestop
35 ft (10.67 m) max. straight
unsupported chimney height
16 ft (4.88 m) min. height (single offset-return)
20 ft. (6.10 m) min. height (double offset-return)
90 ft (27.4 m) max. height
6 ft (1.83 m) max.
unsupported chimney
above roof
47-1/4 in.
(1200 mm)
Effective
Height
Figure 4.1 Chimney Requirements
NOTICE:
A maximum of two pairs of offsets and returns
may be used.
WARNING! Risk of Fire!
You must maintain 2 in. (51 mm)
air space clearance to insulation and other combustible
materials around the chimney system. Failure to do so
may cause overheating and fire.
NOTICE
:
You must provide support for the pipe during
construction and check to be sure inadvertent loading has
not dislodged the chimney section from the fireplace or at
any chimney joint.
A. Chimney Requirements
Vertical distances are measured from the base of the
fireplace as shown in Figure 4.1.
4
Chimney and Termination Requirements
Table 4.2 Chimney Component Dimensions
Table 4.1 Chimney Requirements
ft
meters
• Minimum overall straight height
14.5
4.42
• Minimum height with offst/return
16
4.88
• Maximum height
90
27.43
• Maximum chimney length bewtween an offset
and return
20
6.10
• Maximum distance between chimney stabilizers
35
10.67
• Double offset/return minimum height
20
6.10
• Maximum unsupported chimney length between
the offset and return
6
1.83
• Maximum unsupported chimney height above the
fireplace
35
10.67
• Maximum unsupported chimney above roof
6
1.83
HEIGHT OF CHIMNEY COMPONENTS
in.
mm
Chimney Stabilizer
SL3
4-3/4
121
Offsets/Returns
SL315
13-3/8
340
SL330
15-1/2
394
Chimney Sections*
SL306
4-3/4
121
SL312
10-3/4
273
SL318
16-3/4
425
SL324
22-3/4
578
SL336
34-3/4
883
SL348
46-3/4
1187
* Dimensions reflect effective height.