Installation Guide
9
determine it’s structural condition.
2. Carefully read the pellet stove or insert 
installation instructions.
3. Measure and record the dimensions as 
shown in Figure 8. 
4. Use dimension “A” to determine total pipe 
requirements. Add 12 additional inches 
to insure the termination is an adequate 
distance above the rooine.
5. The gross pipe required will be “A” 
dimension plus 12". Five feet of this will be 
Flex Pipe. The remainder will be rigid pipe. 
For each joint, subtract 1-1/ 2" to allow for 
the overlap. You may need extra pipe, or an 
adjustable length pipe section to achieve the 
correct height.
6. Assemble the rst rigid pipe section to 
the Flex Pipe, insuring that the “UP” arrows 
shown on the pipe labels are, in fact, pointing 
up. Push the sections together and twist to 
lock. Screws are not required for a rm lock, 
however, should it be desired to use them, 
use stainless steel sheet metal screws 1/4" 
long - DO NOT penetrate the inner liner of 
the pipe.
7. Repeat this process for the remainder of 
the pipe sections, and lower the assembly 
down the chimney as shown in Figure 9. 
Lower it below its normal position in order 
to connect the Flex Pipe to the pipe on the 
appliance. It may be necessary to tie a line to 
the top section, to pull it back up later.
8. In making the connection at the appliance, 
congurations other than the one shown in 
Figure 10 may be made. It may be necessary 
to contact the manufacturer of the unit to 
determine exactly what may or may not be 
done to make the correct connection. Some 
typical arrangements are shown in Figures 
11 and 12. A Pipe Adapter may be needed, 
depending on the exit size of the stove or 
insert collar.
9. If a Tee is necessary to make the 
connection, as shown in Figure 12, the Tee 
has a removable Clean Out Adapter on its 
base to enable cleaning. The Tee Support 
Bracket to hold the Tee to the rear of the 
appliance is mandatory. If it is desired to 
mount the Tee Support to the rear of the 
stove, obtain approval from the manufacturer 
of the stove before drilling, tapping, or 
performing any other alterations to the 
appliance.
10. Connect the appliance to the coupling 
on the bottom of the Flex Pipe, by twisting 
to the locked position. Push the appliance 
into the replace to its nal resting place. Go 
to the top of the chimney and pull the vent 
system up to it’s desired height.
11. For the termination of the pellet vent, 
you will use a Tall Cone Flashing, and a Storm 
Collar. This will require 14" of pipe above the 
top of the masonry chimney. Pull the pipe up 
Figure 7
PELLET VENT
CHIMNEY
ADAPTER
DVL/DURABLACK
CHIMNEY ADAPTER
CHIMNEY
SUPPORT BOX
PELLET VENT
CHIMNEY
ADAPTER
EXISTING
DURATECH,
DURAPLUS, OR
DURACHIMNEY
SYSTEM
PELLET
VENT
SYSTEM










