Installation; Venting Installation - Lennox Hearth Products Elite series Installation And Operation Manual

INSTALLATION

Venting Installation
Your Lennox Hearth Products gas insert must be vented to the outside in
accordance with the current edition of the National Fuel Gas Code ANSI-
Z223.1 (In Canada, the current CAN/CSA B149.1 installation code). The
insert must not be connected to a chimney flue serving a separate solid
fuel burning appliance.
This gas insert requires a 3" diameter listed flex liner. The vent should
terminate with a listed direct vent termination cap. The chimney should be
sealed around the cap to prevent air and rain from entering the chimney.
Adhere to the vent manufacturer's instructions for installation and vent
termination. These appliances are approved for use with the following
vent kits.
Cat. No. Model
H0909 FKDVI Flex Liner Kit, DVI 3" X 35' (requires 2, one for
exhaust and one for intake)
TKDVI TKDVI Termination Kit, DVI (termination cap and
flashing)
DV3FK35 DV3FK35 Flex Liner and Termination Kit, 3" X 35'
(includes two flex liners, termination and four
gear clamps)
Vertical Venting
The vent pipes must be connected to the proper collars on the unit and
the exhaust vent pipe must be connected to the termination cap or the
unit will not operate. The combustion air vent pipe can be connected to
the termination cap or it can terminate inside the chimney.
The bottom opening of the chimney must be sealed around the vent pipes
if the combustion air vent is not connected to the termination cap. Use
unfaced fiberglass insulation to seal around the vent pipes. The insulation
may give off an odor during the first hour of operation.
Note: The minimum vertical rise (exhaust vent) is 10 feet (3.1 M) and the
maximum vertical rise is 35 feet (10.7 M). These dimensions are measured
from the starting collars of the unit to the end of the vent pipe.
The fireplace and fireplace chimney must be clean and in good working
order and constructed of non-combustible materials. Inspect chimney
cleanouts for proper fit and seal.
* Other approved vent components include; Standard Simpson Dura-vent Co-linear
Chimney Liner Kit, Direct Vent Termination #991, Liner Termination Kit (includes
termination connector and flashing) #923GK and 3" x 35' Alum Flex #2280
Vent Kits
Description
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
The existing fireplace chimneys may take
various contours which the flexible liners will
accommodate. However, keep the flexible liner
as STRAIGHT as possible, avoid unnecessary
bending.
Vertical Cap
Liner Requirements:
Use 3" (76 mm) diameter listed gas
vent liner (UL1777 ONLY) for the
EXHAUST
Use 3" (76 mm) diameter listed
liner (UL 181 or UL1777) for the
AIR INTAKE.
Vertical Height Min. = 10 ft. (3.1 M)
Vertical height Max. = 35 ft. (10.7 M)
Note: Measured from flue collar on
unit to the end of the vent pipe or liner
The flexible vent pipe
must NOT be allowed to
sag behind insert or in
fireplace flue.
Figure 6
Make sure that both liners will pass through existing damper area. Remove
or lock damper to allow the passage of the flexible liners. If the damper
will not allow the passage of both liners, DO NOT PROCEED FURTHER.
(If fireplace is masonry) Consult a local mason for removal of the damper
without risk of structural damage or leakage (if the fireplace is factory
built) The appliance may NOT be installed into the fireplace.
Direct-Vent Fireplace Insert Vent Requirements - Use liner
listed to UL181 (Factory-made Air Ducts And Air Connec-
tors) or UL1777 (Chimney Liners) for the AIR INTAKE. Use
liner listed to UL1777 ONLY for the EXHAUST.
Do not substitute the heat-rated flex liner (UL1777) for the
exhaust with any other type liner or a fire may result caus-
ing property damage, personal injury or loss of life.
The standard cap
in T ermination K it,
TKDVI, is a high
wind cap
Termination
Connector
Exhaust
Intake
Combustion Air Intake
WARNING
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