26
INSERT PELLET STOVE
(continued)
Installation into a Masonry Fireplace:
1. Have the masonry chimney inspected by a certified
chimney sweep or installer to determine its structural
condition.
2. Determine the amount of venting required to reach
the top of the chimney and then add 14” to ensure the
termination is an adequate distance above the roofline.
3. The first 5’ of your exhaust vent will be Simpson
Dura Vent pellet stove flex vent the remainder will be
rigid pipe. For each joint subtract 1-1/2” to allow for
the overlap. You may need an adjustable length
section to achieve the correct height. The air intake
may be 2” aluminum flex vent.
4. Assemble the first rigid section (of the exhaust
pipe) to the pellet stove flex vent insuring that the
“UP” arrows shown on the pipe labels are pointing up.
Push the sections together and twist to lock. Repeat
the process for the remainder of the pipe sections and
lower the assembly down the chimney. Lower the
intake and exhaust pipes below their normal position
in order to connect the to the back of the appliance. It
may be necessary to tie a line to the top section, of
venting, to pull it back up to the correct position after.
5. In order to connect to the exhaust of the stove you
will need to install a pipe adapter to the exhaust fan
and the either a 90º elbow or a clean out tee with cap.
The air intake can be attached, to the appliance, by
using a hose clamp.
6. Connect the stove to the coupling on the bottom of
the exhaust flex vent and twist to the locked position.
Push the appliance into the fireplace to its final
position. Go to the top of the chimney and pull the
vent system up to the desired height.
7. For the exhaust termination of the pellet vent use a
tall cone flashing and a storm collar. This requires
14” of pipe above the top of the masonry chimney.
Pull the pipe up through the flashing to the desired
height and mark where the storm collar will go. Slip
the storm collar down over the pipe and fasten it to the
pipe with a 1/4” stainless steel sheet metal screw. The
storm collar will then support the entire exhaust vent
system.
8. To install the air intake vent through the chimney
cap you may cut a hole and install cap as shown or
attach air intake vent to a flashing and cap. The
chimney top must be properly sealed to prevent rain
and or snow from entering the chimney.
9. Install the cap and seal around the joint of the
storm collar and any other joints that are visible.
10. This completes the masonry chimney installation.
Exhaust Cap
Air Inlet
Rigid Vent Pipe
Flexible Exhaust
Vent
Damper Removed or
Fastened Open (for
Canada) or sealed off
(United States)
Steel Plate or Flashing
Mantle
Minimum 6” (150 mm) non-
combustible Floor Protection
90º elbow or clean out Tee
Figure 20
