Heat & Glo AT-ZC Installer's Manual page 10

CAUTION 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.
Termination
Cap