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TO AVOID DOWNDRAFTS AND/OR COLD AIR
PROBLEMS, IT IS RECOMMENDED TO SEAL
OFF THE AREA BETWEEN THE TERMINATION
CAP AND THE TOP OF THE SOLID-FUEL
CHIMNEY OPENING INTO WHICH THE VENT
CAP HAS BEEN INSTALLED.
WHEN USING THE LINK-DV4-30 VENT SYSTEM,
IT IS REQUIRED TO SEAL AROUND THE
FLEXIBLE VENT PIPES IN THE DAMPER AREA.
SEE FIGURE 3. USE FIBERGLASS INSULATION
OR OTHER SUITABLE NON-COMBUSTIBLE
MATERIAL.
VENT SYSTEM APPROVALS
AT-ZC LINK-DV30
LINK-DV4-30
TABLE 1
WARNING: MAJOR U.S. BUILDING
CODES SPECIFY MINIMUM CHIMNEY
AND/OR VENT HEIGHT ABOVE THE
ROOF TOP. THESE MINIMUM HEIGHTS
ARE NECESSARY IN THE INTEREST OF
SAFETY. FIGURE 2 SHOWS MINIMUM
HEIGHTS, PROVIDED THE
TERMINATION CAP IS AT LEAST 8-FEET
FROM A VERTICAL WALL.
NOTE: This also pertains to vertical vent systems
installed on the outside of the building.
Roof Pitch H (min.) ft.
flat to 6/12 1.0
6/12 to 7/12 1.25
over 7/12 to 8/12 1.5
over 8/12 to 9/12 2.0
over 9/12 to 10/12 2.5
over 10/12 to 11/12 3.25
over 11/12 to 12/12 4.0
over 12/12 to 14/12 5.0
over 14/12 to 16/12 6.0
over 16/12 to 18/12 7.0
over 18/12 to 20/12 7.5
over 20/12 to 21/12 8.0
Figure 2. Minimum Height from Roof to Lowest
Discharge Opening
Termination
Cap
CAUTION