Installation
h
orizontal
t
hrough
W
all
i
nStallation
:
The ENVIRO EF THERMO can be vented by a couple of different methods.
1.
NOTE: Use only listed type “PL” or “L” pellet venting products. Failure to use listed components may
cause damage or personal injury or death.
2. Choose a location for your stove that meets the requirements stated in this manual and allows
installation with the least amount of interference to house framing, plumbing, wiring, etc.
3. Install a non-combustible hearth pad underneath the unit extending 6 inches (15 cm) in
front of and to the sides.
4. Place the stove 15” (38.1 cm) away from the wall. If the stove is to be set on a hearth pad, set the
unit on it.
5. Locate the center of the exhaust pipe on the stove. Extend that line to the wall. Once you have
located the center point on the wall, refer to pellet vent manufacturer installation instructions for the
correct hole size and clearances to combustibles.
6. Install the wall thimble as per the instructions written on the thimble. Maintain an effective vapor
barrier.
7. Install a 2’ or 3’ (61 or 92 cm) length of 3” (7.6 cm) or 4” (10.2 cm) listed type “PL” or “L” vent pipe
into the wall thimble. The pipe should install easily into the thimble.
8. Install the fresh air intake (see the section entitled FRESH AIR CONNECTIONS).
9. Connect the exhaust vent pipe to the exhaust pipe on the stove.
10. All Joints in the vent system shall be fastened with (3) three screws. Seal the connection with high
temperature silicone.
11. Push the stove straight back, leaving a minimum of 1” (2.5 cm) clearance from the back of the stove
to the wall. Seal the vent pipe to the thimble with high temperature silicone.
12. The pipe must extend at least 12’ (30.5 cm) away from the building. If necessary, bring another
length of pipe (PL type) to the outside of the home to connect to the first section. Do not forget to
place high temperature silicone around the pipe that passes through the thimble.
13. Install a vertical pipe; or, if all requirements for direct venting are met, install vent termination. The
stainless steel cap termination manufactured by the vent manufacturer is recommended. However,
when the vent terminates several feet above ground level and there are no trees, plants, etc. within
several feet, a 45 degree elbow can be used as termination. The elbow must be turned down to
prevent rain from entering.
NOTE:
• It is recommended that horizontal through wall installations have 3 to 5 feet (91 to 152 cm) of vertical
pipe in the system to help naturally draft the unit in the event of extreme weather or a power outage.
• Some horizontal through wall installations may require a “T” and 3 to 5 feet (91 to 152 cm) of vertical
pipe outside the building to help draft the unit. This may be required if a proper burn cannot be
maintained, after the stove has been tested and the airflow set. This is due to the back pressure in the
exhaust caused by airflow around the structure.
• Follow vent manufacturer’s guidelines for installation of venting. High temperature sealant must be
used when connecting the vent pipe to the unit’s starter pipe. Improper seals at the vent joints may
cause combustion byproducts to leak into the room where installed - seal as required.
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