DuraVent DuraSeal DS Installation Instructions Manual page 17

Single wall or double wall al29-4c or 316l special gas vent for category i, ii, iii and iv type l vent low temperature venting system
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2.4.lnstall screws in the screw hole and tighten.
2.5.Add the red S-650 caulking over the screws (Figure 21).
Figure 21 -DuraSeal Flex screws
3. Official installation of the lower side of the adapter on the flexible liner
3.1. Add a bead of Viton® caulking (resistance to condensate) all around
the adapter between both tubes of the adapter. Just make sure that
the gap is well filled about 1 /4" of Viton®.
3.2. Add another bead of Viton® caulking at 1 /2" from the edge of the
flexible liner all around the inner side of it (Figure 22).
Figure 22 -DuraSeal Flex Viton® caulking
3.3. Push the adapter on the liner all the way in, until you can't see the
mark made on the flexible liner earlier. Add a bead of the S-650
red caulking all around the outer junction of the adapter and the
flexible liner to make sure everything is well sealed. Also add over
the screw holes (Figure 23).
Figure 23 -DuraSeal Flex S-650 caulking
3.4. lnstall screws in the screw hole and tighten.
3.5. Add the red S-650 caulking over the screws (Figure 24).
Figure 24 - DuraSeal Flex screws
17

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