DuraVent Ventinox Rigid Factory-Built Lining System - Manual (Page 6)

8. Installation of wall radiation shield through a
combustible wall.
• From inside, frame a hole14 1/2" x 14 1/2" (368
mm x 368 mm) in the wall where the vent will pass
through.
• Adjust the insulated wall radiation shield length to
fit the wall thickness and lock the two parts together
with three (3) screws supplied.
CAUTION: Make sure the wall radiation shield is
always in contact with the masonry chimney.
• Slide the wall radiation shield over the length and fix
it to the wall using four (4) screws supplied (fig. 6).
Note: The void in the four corners between the wall
radiation shield and the wall frame can be filled with
fiberglass insulation.
Fig. 5
Fig. 6
1. At the bottom of the masonry chimney, set up a brick
or other non-combustible support on which the liner
will rest.
Note: On an installation lower than 30 feet, you may
support the liner from the top support.
2. Attach the tee to the first liner length. Insert the liner
with the male (smaller connection) end down. Twist
lock the parts together (fig. 2 page 4).
3. You may remove the horizontal branch to facilitate
lowering the liner into the chimney, then attach it
when in place. If you keep it, make sure it is solidly
attached.
4. To lower the liner into the chimney, we suggest that
you tie a small hook to a long rope and grip the hook
on the tee. Make sure the rope is on the outside
of the liner, so you will be able to add lengths and
lower the assembly down the chimney (fig. 10). Add
lengths until the liner protrudes about 10" above the
masonry chimney top.
5. Install the support plate on top of the masonry
chimney using lag bolts and /or cement.
6. Slip the support collar over the liner until it rests on
the support plate. Tighten the bolt to fasten it to the
liner.
Fig. 7 - Existing masonry relining installation
VENTINOX LINING SYSTEM - 6
EXISTING CHIMNEY RELINING (fig.7) :
If you choose to insulate the liner
See insulating liner section (Page8).