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LENNOX HEARTH PRODUCTS • ELITE LINEAR VIEW DIRECT-VENT GAS FIREPLACE (MODELS LDV42, LDV54) • INSTALLATION INSTRUCTIONS
VENTINg
INSTALLATION
gENERAL VENTINg INfORMATION
AND IMPORTANT NOTICES
• These instructions should be used as a
guideline and do not supersede local
codes in any way. Install venting accord-
ing to local codes, these instructions,
and the current National fuel gas Code
(ANSI-Z223.1) in the USA or the current
standards of CAN/CSA-B149.1 in Canada.
• Ensure that clearances are in accordance
with local installation codes and the re-
quirements of the gas supplier.
Dégagement conforme aux codes d'in-
stalla tion locaux et aux exigences du
foumisseunde gaz.
• Use only approved vent components. See
"Approved Vent Components" (on this
page), and "Installation Accessories" at
the back of this manual.
• These fireplaces must be vented directly
to the outside.
• The vent system may not service multiple
appliances and must never be connected
to a flue serving a solid fuel burning appli-
ance.
• The vent pipe is tested to be run inside an
enclosed wall (such as a chase). There is no
requirement for inspection openings in the
enclosing wall at any of the joints in the vent
pipe.
• Secure Vent™ components are shown in
these figures; Secure Flex™ pipe also may
be used.
WARNINg
Under no circumstances may sepa-
rate sections of concentric flexible
vent pipe be joined together.
Remember to maintain minimum
clearances to combustibles!
See CLEARANCES section in this manual.
NOTICE:
It is important to install
horizontal runs on a steady, (i.e., no
"dips"), slightly positive incline of
approximately 1/4 inch rise-per-foot (20
millimeters rise-per-meter) horizontal,
in a direction away from the fireplace.
(Slightly smaller rise-per-foot run ratios
are acceptable.) Use a carpenter's level
to measure from a constant surface, and
adjust support straps as necessary.
APPROVED VENT COMPONENTS
These appliances are designed, tested, and
listed for installation and operation with the
following vent components, which are labeled
for identification:
• Secure Vent™ direct-vent system compo-
nents by Security Chimneys International.
• Secure flex™ flexible vent components by
Security Chimneys International.
• Z-fLEx™ model GA venting systems listed
to UL1777 and ULCS635 by Flexmaster
Canada Limited.
Do NOT use any other manufacturers' vent
components with these appliances.
See "Installation Accessories" at the back of
this manual for catalog numbers.
ATTAChINg SECURE VENT™
COMPONENTS
Secure Vent™ direct-vent system components
are unitized concentric pipe components
featuring positive twist-lock connections (see
Figure 13-1).
To attach venting components:
1. Attach the dimpled end of one section to
the incline channel end of the other section,
making sure to align the four dimples with
the inlets of the four incline channels.
2. Push the section being attached against the
adjoining section until fully engaged.
3. Twist the section being attached CLOCK-
WISE, running the dimples down and along
the channels until seated at the ends of the
channels. The sections are properly seated
when the arrow on one section aligns with
the dimple on the other section.
The unitized design of Secure Vent compo-
nents will engage and seal both the inner and
outer pipe without the need for sealant or
screws. If desired, however, a #6 x 1/2" screw
may be used at each joint (not required).
Align dimples in upper vent
section with inlets of locking
incline channels on lower vent
section (or appliance collar).
Twist upper vent section
ClOCKWISE until arrows
and dimples align.
Arrow
Dimple
Locking
Incline
Channel
Connected Vent
Lower Vent Section or Appliance Collar
Figure 13-1
NOTE: DIAGRAMS AND ILLUSTRATIONS ARE REPRESENTATIVE AND ARE NOT DRAWN TO SCALE.
www.LennoxHearthProducts.com
fIRESTOP/SPACER
REqUIREMENTS
Vertical firestop/Spacer must be
used anywhere vent pipe passes
through a combustible floor or
ceiling.
horizontal firestop/Spacer must be
used anywhere vent pipe passes
through a combustible wall.
• Use Secure Vent™ Firestop/Spacer with
Secure Vent™ vent pipe.
• Use Secure flex™ Firestop/Spacer with
Secure flex™ vent pipe.
• See "Installation Accessories" at the back of
this manual for catalog numbers.
Installing Vertical (Ceiling)
firestop/Spacer
1. Install vertical firestop/spacer at all ceiling
joists.
• If living space is above the ceiling, install
• If attic space is above the ceiling, install
2. Route vent sections through the framed
ceiling opening (see Page 9), and secure
firestop/spacer with 8d nails (or other
appropriate fasteners) at each corner.
3. Install attic insulation shield (REqUIRED)
to keep insulation materials from touching
vent pipe.
(Attic insulation shield may be used to
obtain required clearances to combus-
tibles. See "Installation Accessories" at
the back of this manual for ordering infor-
mation).
Note: Caulk firestops only where pipe
penetrates an outside wall, attic, or other
unconditioned space.
Installing horizontal (Exterior Wall)
firestop/Spacer
See Figure 23-1. Install horizontal firestop/
spacer over the opening at the exterior side
of the framing, long side up, with the 3-inch
spacer clearance at the top, and nail into place.
(The firestop/spacer also may be installed over
the opening on the interior side of framing).
Arrow
Sections
firestop/spacer on bottom side of ceiling.
firestop/spacer on top side of joist.
13
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