DuraVent DuraFlex AL Installation - Manual (Page 7)

7
Figure 6
Figure 7
MORTAR
SLeeVe
FLex LINeR
FLex PULLeR
ROPe (NOT
INCLUDeD)
Figure 8
MORTAR
SLeeVe
B-VeNT
FeMALe
ADAPTOR
2 - 3 INCHeS
made in the chimney wall, break out
sufficient masonry to form an opening
large enough for the Mortar Sleeve
or Flex Liner to pass through easily.
If a Tee application is necessary, a
larger hole may be required (See Tee
Installation Section).
Step 3. extending the Flex Liner from
its compressed length requires two
people. extend half of the length at a
time by:
a. At the midpoint of the liner, face
each other. See Figure 5
b. Both holding firmly onto the
liner, one person steps backwards
FLEXIBLE LINER INSTALLATION
The basic flexible liner installation
procedure for gas appliances such as
Category I furnaces, water heaters,
and boilers is as follows:
Step 1. Measure and record the
interior dimensions of the masonry
chimney and the height of the chimney
from the top, down to the penetration
through the masonry where the liner
will pass.
Step 2. After locating where the
appliance flue connection will be