Typical Installation Sequence; Detailed Installation Steps; Step 1. Framing; Step 2. Routing Gas Line - Lennox LSS-35CN Installation Instructions Manual

DETAILED INSTALLATION STEPS

The appliance is shipped with all gas controls and
components installed and pre-wired. Remove
the shipping carton, exposing the front glass
door. Remove ceramic panel kit from the top of
the fireplace and set it aside with care. Remove
the cardboard from underneath the pressure
relief plates. Open the two latches (located
under the firebox floor) securing the glass
door. Remove the door by tilting it outward at
the bottom and lifting it up. Set the door aside
protecting it from inadvertent damage. See
Figure 48 on page 27.

TYPICAL INSTALLATION SEQUENCE

The typical sequence of installation follows,
however, each installation is unique resulting
in variations to those described.
See the page numbers references in the follow-
ing steps for detailed procedures.
Step 1. (page 13) Construct the appliance fram-
ing. Position the appliance within the framing
and secure with nailing brackets.
Step 2. (page 13) Route gas supply line to
appliance location.
Step 3. (page 13) Install the vent system and
exterior termination.
Step 4. (page 23) Field Wiring
Install the operating control switch (not factory
provided) and bring in electrical service line for
forced air circulating blower.
Step 5. (page 23) Make connection to gas
supply.
Step 6. (page 26) Install the ceramic panel,
logs, and glowing embers.
Step 7. (page 26) Checkout appliance opera-
tion.
Step 8. (page 26) Install glass door frame
assembly.
Step 9. (page 27) Adjust burner to ensure
proper flame appearance.
Step 10. (page 28) Affix warning labels.

Step 1. FRAMING

Frame these appliances as illustrated in
Figure 10 on page 9, unless the appliance is to
be installed in a corner. See Figure 11 on page
9 for corner framing installations. All framing
details must allow for a minimum clearance to
combustible framing members as shown in
Table 6 on page 8.
See Figure 12 on page 10 for the facing detail.
See Figure 13 on page 10 for the Non-Com-
bustible requirements. See Figures 14 and 15
on page 11 for Hearth Requirements.

Step 2. ROUTING GAS LINE

Route a 1/2" (13 mm) gas line along the inside
of the right side framing as shown in Figure
17. Gas lines must be routed, constructed and
made of materials that are in strict accordance
with local codes and regulations.
All appliances are factory-equipped with a flex-
ible gas line connector and 1/2" inch shutoff
valve. (See step 5 on page 23).
Figure 17
Step 3. INSTALL THE VENT SYSTEM
General Information
These instructions should be used as a guide-
line and do not supersede local codes in any
way. Install vent according to local codes,
these instructions, the current National Fuel
Gas Code (ANSI-Z223.1) in the USA or the
current standards of CAN/CGA-B149.1 and
-B149.2 in Canada.
These fireplaces are designed, tested
and listed for operation and installation
with, and only with, Secure Vent™ Direct
Vent System Components, Secure Flex™
Flexible Vent Components manufactured
by Security Chimneys International and Z-
FLEX™ Model GA Venting Systems listed
to UL1777 and ULCS635 manufactured by
Flexmaster Canada Limited.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
These approved vent system components
are labeled for identification.
use any other manufacturer's vent
components with these appliances.
Some local jurisdictions may require the gap
between the outer wall of the vent system and
the firestop penetration opening to be sealed.
This is not a requirement of the listing of this
product, however this gap may be sealed using
aluminized tape or similar non-combustible
material.
The vent system may not service multiple
appliances, and must never be connected to a
flue serving a solid fuel burning appliance. The
vent pipe is tested to be run inside an enclosing
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.
Select Venting System - Horizontal or Vertical
With the appliance secured in framing, de-
termine vent routing and identify the exterior
termination location. The following sections
describe vertical (roof) and horizontal (exterior
wall) vent applications. Refer to the section
relating to your installation. A list of approved
venting components is shown in the two tables
on page 29.
VERTICAL TERMINATION SYSTEMS (ROOF)
Figure 18, and Figures 28 through 30
on pages 14 and 17 and their associated
Vertical Vent Tables illustrate the various verti-
cal venting configurations that are possible for
use with these appliances. Secure Vent pipe
applications are shown in these figures; Secure
Flex pipe may also be used. A Vertical Vent
Table summarizes each system's minimum and
maximum vertical and horizontal length values
that can be used to design and install the vent
components in a variety of applications.
Both these vertical vent systems terminate
through the roof. The minimum vent height
above the roof and/or adjacent walls is speci-
fied in ANSI Z223.1-(latest edition) (In Canada,
the current CAN-1 B149 installation code) by
major building codes. Always consult your lo-
cal codes for specific requirements. A general
guide to follow is the Gas Vent Rule (refer to
Figure 4 on page 6).
DO NOT
13