Hearth & Home Technologies 5100I-NL-B User Manual

Page 15

R 

438-0380D

September 1, 2008

Floor

Ceiling

Caulk

Floor

(second Story)

Non-Combustible

Firestopping

Material

2 inch

(51mm)

Ovalizing round stainless steel liners to accommodate the

liner passing through the damper region of a fireplace is an 

allowable and acceptable practice.
Ensure  that  the  ovalization  is  minimized  to  the  extent

required to fit through the damper.

REqUIRED:  A minimum NFPA 11 required stainless steel 

liner  connector  pipe  extending  to  the  first  flue  liner  of  the 

existing code approved masonry chimney. To eliminate dilu-

tion air in the chimney, seal the damper area of the chimney

around the chimney connector.
BEST: A complete relining of the chimney system with a 6

inch (152mm) diameter listed, stainless steel liner. The liner

must  be  connected  to  the  insert  flue  collar  and  extend  the 

entire height of the chimney, terminating slightly above a plate

that seals the top of the chimney. All joints should be secured

with 3 sheet metal screws. The sections must be attached to

the insert and to each other with the crimped (male) end point-

ing toward the insert.

Figure 15.1.

Minimum clearances to combustibles must be maintained.
A full reline is required for factory-built fireplace installations in 

Canada and is highly recommended in USA. 

To ensure that insulation or any other combustible material

does not contact the chimney, a chimney inside the house

must have at least 2 inches (51mm) of air space clearance

around  the  chimney.   A  chimney  outside  the  house  must

have at least 1 inch (25mm) clearance to the combustible

structure.  Noncombustible fire stops must be installed at the 

spaces where the chimney passes through floors and/or ceil-

ings.

 Figures 15.2 and 15.3.

Fire Risk.

Do NOT pack insulation or other 

combustibles between spacers.
•  ALWAYS maintain specified clearances 

around venting and spacers.

•  Install spacers as specified.
Failure to keep insulation or other material 

away from vent pipe may cause fire.

LINER CONNECTOR

FLUE

 GAS 

DIRECTION

CRIMPED

END

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