E. Vertical Venting - Using An Existing Chimney
Page 25
1998-2006 Edition
When using an existing chimney to install the vent system for the pellet stove, be sure to line the entire
length of the chimney with three (3) inch or four (4) inch (76mm or 102mm) listed galvanized or stainless
steel flex pipe. Use four (4) inch (102mm) diameter flex pipe if the chimney has a prior history of bad draft
or if you have a chimney exceeding eleven (11) feet (3.4m) in height.
Contact local chimney installation experts for the proper procedures that are required to install a flexible
vent system for your particular vent configuration. Remember to clean the existing fireplace cavity and
chimney pipe of all soot and creosote deposits before attempting to install the flexible vent system.
Parts List
1. 3" or 4" (76mm or 102mm) Stainless Steel Flex Pipe
2. 1-5/8" (41mm) ID Rigid or Flex Hose
3. Air Intake end cap / rodent screen
4. Existing Flashing
5. Existing Storm Collar
6. 3" or 4" (76mm or 102mm) Rain Cap
7. Existing Vent Pipe.
Note: If the vertical length of the existing chimney is greater than
11 feet (3.4m), use 4" (102mm) Stainless Steel Flex Pipe to line
the entire length of the chimney.
See also Chapter IV Section D “Clearances to Combustible Material Requirements” on Page 10.
FIGURE 12: Relining an Existing Chimney
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