Lennox Hearth II-T C INS, II-T C FS operation manual Installation

INSTALLATION

INSTALLING YOUR FREESTANDING PELLET STOVE Standard Horizontal Vent Installation

All PL Venting Components must be listed to UL 641 or ULC S609

1.Locate the proper position for the listed type “PL” wall thimble. Avoid cutting wall studs when installing your pipe. Use a saber saw or keyhole saw to cut the proper diameter hole through the wall to accommo- date the wall thimble. Use extreme caution to avoid cutting into power lines within the wall of the home. The hole size will depend on the brand of pellet vent that you are using. Install the wall thimble in the hole.

2.ALL INTERLOCKING PIPE CONNECTIONS WITH-IN THE ROOM MUST BE SEALED WITH HIGH TEM- PERATURE RTV AND SECURED WITH A MINIMUM OF 3 FASTENERS PER CONNECTION. Position the stove approximately 12” (305 mm) from the wall on the floor pad. Push the “PL” pipe through the wall thimble. Squeeze a bead of high temperature silicone (RTV) sealer around the end of the machined portion of the 3” (76mm) pipe connector on the back of the stove. Firmly push on a section of “PL” pipe until in- ner pipe liner pushes into the bead of RTV sealer.

3.Push the stove with pipe attached towards the wall (the pipe will go through the wall thimble). Do not position the back of the stove closer than 2” (51mm) from the wall (see clearances, page 6). Note: Greater back wall clearance will improve the ease of serviceability of the stove.

Pipe Connector on Stove
	Use RTV High Temp Silicone

Inlet Air	Metal
Port	Fresh Air
	Pipe

4.Install listed type “PL” 45 degree elbow with optional rodent screen or cap (recommended) on outside end of pipe. The rodent screen should be no less than 1/2” (13 mm) mesh and may clog with soot and ash if left unattended during the burn season.

NOTE: The end of the exhaust pipe must extend a minimum of 12” (305 mm) from the outside of the building.

5.If the installation includes a source of outside com- bustion air; cut a separate hole through the wall for the fresh air tube. Use a galvanized or stainless steel pipe for the duct. The minimum size for the duct shall be not less than 50% of the cross sectional flue area. Connect outside air pipe to air inlet on stove. This tube must be terminated with a 45 degree elbow or hood.

NOTES:

Combustion air may also be drawn from a vented crawl space under the home.

All joints for connector pipe are required to be fastened with at least three screws. If vented horizontally, joints shall be made gas-tight (air tight, sealed connection) in a manner as specified on this page (see instruction #2). Install vent at clearances specified by the vent manufac- turer.

Horizontal l Pipe Use RTV High Temp Silicone Wall Thimble Hole Through the Wall for the Thimble Wall Thimble Use RTV High Temp Silicone 45° Elbow

Hole

Through

the Wall for

the Fresh

Air Pipe

45 Degree Elbow Joint

For Fresh Air Pipe

Note: Greater back clearance will improve the ease of serviceability of the stove.

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