Superior Custom WRT40PFWS Installation And Operation Instructions Manual page 9

2" (5.1cm)
Minimum
2" (5.1cm)
Minimum
Straps
Return
Elbow
Figure 17 - Chimney Supports
6' Max.
(15.2 cm)
6' Max.
(15.2 cm)
Figure 18 - Typical Offset Installations
FIRESTOP SPACERS (FS-10)
Firestop spacers are required at each point where the chimney pen-
etrates a floor or ceiling joist space. Their purpose is to establish
and maintain the required clearance between the chimney and the
combustible materials. When the pipe passes through a framed
opening into a living space above, the firestop must be placed onto
the ceiling from below as shown in Figure 19.
They also provide complete separation from one floor space to
another or attic space as required by most codes. When the double
wall pipe passes through a framed opening into an attic space, the
firestop must be placed into an attic floor as shown in Figure 20.
When penetrating a floor or ceiling at an angle, use firestop spacer
number 30FS-10 (see Replacement Parts, page 15 and Accessories,
page 16).
126616-01A
VENTING INSTALLATION Continued
Angled Firestop
Ceiling
Support
6' Max.
(15.2 cm)
6' Max.
(15.2 cm)
6' Max.
(15.2 cm)
6' Max.
(15.2 cm)
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Figure 19 - Firestop Spacer with Living Space Above Ceiling
Firestop
Spacer
Figure 20 - Firestop Spacer with Attic Space Above Ceiling
10' FOOT RULE
All chimney terminations must extend a minimum of 3 feet above the
highest point where it passes through the roof and must be at least 2
feet above roof with a 10 foot horizontal span (see Figure 21).
IMPORTANT: If an exposed portion of chimney is greater than 4 feet
above the roof line, use support wires to keep chimney secure. Support
wires may be attached to outer pipe of chimney with screws, if screws
do not penetrate inner flue pipe.
Figure 21- 10 Foot Rule
Existing
Ceiling
Frame
Firestop
Spacer
Screws or
Staples
(Min. of 8)
Screws or Staples
(Min. of 8)
Existing
Ceiling
Frame
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