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4
Chimney and Termination Requirements
A. Chimney Requirements
Vertical distances are measured from the base of the
fireplace as shown in Figure 4.1.
Table 4.1 Chimney Requirements
• Minimum overall straight height
• Minimum height with offset/return
• Maximum height
• Maximum chimney length between an offset
and return
• Maximum distance between chimney
stabilizers
• Double offset/return minimum height
• Maximum unsupported chimney length
between the offset and return
• Maximum unsupported chimney height above
the fireplace
• Maximum unsupported chimney above roof
NOTICE:
A maximum of two pairs of offsets and returns
may be used.
WARNING! Risk of Fire!
air space clearance to insulation and other combustible
materials around the chimney system. Failure to do so
may cause overheating and fire.
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling firestop
41-1/4 in.
(1048 mm)
Effective
Height
Figure 4.1
Chimney Requirements
Majestic Royalton Series • BE36/42 • 4044-197 Installation Manual • Rev J • 09/18
13
14.5 ft
90 ft
20 ft
35 ft
20 ft
6 ft
35 ft
6 ft
You must maintain 2 in. (51 mm)
6 ft (1.83 m) max.
unsupported chimney
above roof
35 ft (10.7 m)
max. straight
unsupported
chimney height
14.5 ft (5.03 m) min. height/single offset-return
20 ft. (6.10 m) min. height/double offset-return
90 ft (27.4 m) max. height
NOTICE:
construction and check to be sure inadvertent loading has
not dislodged the chimney section from the fireplace or at
any chimney joint.
Table 4.2 Chimney Component Dimensions
(3.96 m)
HEIGHT OF CHIMNEY COMPONENTS
(4.42 m)
Chimney Stabilizer
(27.43 m)
SL3
(6.1 m)
Offsets/Returns
(10.67 m)
SL315
SL330
(6.1 m)
Chimney Sections*
(1.83 m)
SL306
(10.67 m)
SL312
(1.83 m)
SL318
SL324
SL336
SL348
* Dimensions reflect effective height.
You must provide support for the pipe during
in.
mm
4-3/4
121
13-3/8
340
15-1/2
394
4-3/4
121
10-3/4
273
16-3/4
425
22-3/4
578
34-3/4
883
46-3/4
1187
15
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