H. Masonry Chimney Liner
For optimal performance, masonry chimneys used to vent this appliance should be:
1.Lined with a 6 inch (152mm) stainless steel liner.
•Installations into a clay flue without a stainless steel liner may reduce draw which affects performance, cause the glass to darken and produce excessive creosote.
2.It is recommended that a chimney with a larger diameter than 6 inches (152mm) be relined.
•The oversized flue can cause poor performance and contribute to the accumulation of creosote.
3.Have the chimney cleaned before the stove is installed and operated.
The following bullets list the more critical requirements for a properly constructed chimney:
•The masonry wall of the chimney, if brick or modular block, must be a minimum of 4 inches (102mm) nominal thickness.
•A chimney of rubble stone must be at least 12 inches (305mm) thick.
•The chimney must have a fire clay flue liner (or equivalent) with a minimum thickness of 5/8 inch (16mm) and must be installed with refractory mortar.
•An equivalent liner must be a listed chimney liner system or other approved material.
•Since an oversized flue contributes to the accumulation of creosote, the size of the flue should be checked to determine that it is not too large for the appliance.
•The chimney should also be checked to ensure it meets the minimum standard of the National Fire Protection Association (NFPA) Standard 211.
•A chimney support package must be used when a connection is made through the ceiling to a factory built chimney.
•An approved thimble and chimney support package are absolutely necessary to provide safe clearances to combustible wall and ceiling material.
NOTICE: In Canada, the installation shall conform to
NOTICE: Check with your local building authorities and/or consult the National Fire Protection Association (NFPA 211).
Wood Stud 2 in. |
|
(51mm) |
|
Clearance from |
|
chimney wall | Fireclay liner 5/8 in. |
| |
| (16mm) Minimum |
| or Equivalent. |
Header |
|
Fireclay liner 5/8 in. (16mm) Minimum or Equivalent.
Sill support
Thimble Assembly: 12 in. (305mm) of brick separation between clay liner and combustibles.
Figure 36.1
36 | Heatilator • |