Hearth & Home Technologies 5100-I User Manual

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5100-I  WOOD INSERT
Page 8
January 30, 2004
R
250-1960  Rev B
Floor
Ceiling
Caulk
       
Floor
(second Story)
Non-Combustible
Firestopping
Material
Minimum 1 inch (25mm) 
clearance from exterior 
chimney to sheathing
Firestopping
2 inch 
(51mm)
A chimney must be the required height above the roof 
or other obstruction for safety and for proper draft oper-
ation.  The requirement is that the chimney must be at 
least 3 feet (91cm) higher than the highest point where 
it passes through the roof, and at least 2 feet (61cm) 
higher than the highest part of the roof or structure that 
is within10 feet (305cm) of the chimney, measured hori-
zontally.  Refer to Figure 8C.
CHIMNEY REQUIREMENTS 
Non-combustible
fire stopping material
Minimum 2 inch (51mm) clearance
from combustible material
and insulation
ceiling
At least 2 ft
(61cm)
At least 3 ft
(91cm)
CHIMNEY HEIGHT
10 ft
(305cm)
CHIMNEY TOP VIEW
FLUE
Foundation
1/2" (12.7mm) airspace
5/8" (16mm) 
Fireclay Flue 
Liner
Chimney Wall 
4" (102mm) 
Nominal
Figure 8A
Figure 8C
Figure 8B
Figure 8D
OVALIZING ROUND STAINLESS STEEL 
LINERS 
Ovalizing round stainless steel liners to acommodate 
the liner passing through the damper region of a fire-
place is an allowable and acceptable practice.
Ensure that the ovalization is minimized to the extent 
required to fit through the damper.