Lennox Hearth Figure 11, DETAILED INSTALLATION STEPS, Figure 12 - Nailing Flanges, Step 1. FRAMING, TYPICAL INSTALLATION SEQUENCE

9
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
WARNING
Failure to position the parts in
accordance with these diagrams
or failure to use only parts specifi-
cally approved with this appliance
may result in property damage or
personal injury.
AVERTISSEMENT
Risque de dommages ou de
blessures si les pièces ne sont
pas installées conformément à
ces schémas et ou si des pièces
autres que celles spécifiquement
approuvées avec cet appareil sont
utilisées.
Figure 11
REMOVE
CARDBOARD
BEFORE USING
Pressure Relief
Plates
Remove Cardboard Before
Using Appliance
REMOVE
CARDBOARD
BEFORE USING
DETAILED INSTALLATION STEPS
The appliance is shipped with all gas controls
and components installed and pre-wired.
1. Remove the shipping carton. Remove the
shipping pad, exposing the front glass
door.
2. Open the two latches (located under the fire-
box 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 Removing
and Installing Glass Doors on Page 32.
3. Remove the top louvered panel and locate
the pressure relief plates (see Figure 11).
4. Lift the pressure relief plates and remove
the cardboard from beneath each plate (be
careful not to damage the white gasket).
Figure 12 - Nailing Flanges
Note: The nailing flanges, combustible members
and screw heads located in areas directly adjacent
to the nailing flanges, are EXEMPT from the 1/2”
clearance to combustible requirements for the
firebox outer wrapper. Combustible framing may be
in direct contact with the nailing flanges and may
be located closer than 1/2” from screw heads and
the firebox wrapper in areas adjacent to the nailing
flanges. Frame the opening to the exact dimensions
specified in the framing details of this manual.
Nailing Flanges Are
Provided At All Four
Corners At 5/8”, 1/2”
And Flush Settings
Side
Framing
Unit
Nailing Flange
Left Side Front Corner of Fireplace Shown
(Right Side Requirements the Same)
Unit Being Secured By Its Nailing Flanges
To The Framing
Step 1. FRAMING
Frame these appliances as illustrated in Figures
13 and 14 on Pages 10 and 11 (Figure 14
applies to corner framing installations only).
All framing details must allow for a minimum
clearance to combustible framing members as
shown in Table 6 on Page 8.
If the appliance is to be elevated above floor level,
a solid continuous platform must be constructed
below the appliance.
Headers may be in direct contact with the appli-
ance top spacers when they are bent up vertically
maintaining the 3" clearance to the fireplace top,
but must not be supported by them or notched
to fit around them. All construction above the
appliance must be self-supporting. DO NOT use
the appliance for structural support.
The fireplace should be secured to the side
framing members using the unit's nailing
flanges - one top and bottom on each side of
the fireplace front. See Figure 12. Use 8d nails
or their equivalent.
Left Side Front Corner of Fireplace Shown
(Right Side Requirements the Same)
Unit Being Secured By Its Nailing
Flanges To The Framing
NOTE: The nailing flanges, combustible mem-
bers and screw heads located in areas directly
adjacent to the nailing flanges, are EXEMPT from
the 1/2” clearance to combustible requirements
for the firebox outer wrapper. Combustible fram-
ing may be in direct contact with the nailing
anges and may be located closer than 1/2”
from screw heads and the firebox wrapper in
areas adjacent to the nailing flanges. Frame
the opening to the exact dimensions specified
in the framing details of this manual.
TYPICAL INSTALLATION SEQUENCE
The typical sequence of installation is outlined
below. However, each installation is unique
and may result in variations to the steps
described.
See the page numbers references in the follow-
ing steps for detailed procedures.
Step 1. (Page 9) Construct the appliance fram-
ing. Position the appliance within
the framing and secure with nailing
brackets. Bend up the appropriate
header spacing guides for the drywall/
finish material thickness to be used
(see Figure 49). Bend up the outer
pair for 1/2" materials and the inner
pair for 5/8" materials. Bend out the
appropriate nailing flanges for the
drywall/finish material to be used.
Nailing flanges are provided for flush
framing, 1/2 inch and 5/8 inch framing
depths (see Figure 12).
Step 2. (Page 11) Route gas supply line to
appliance location.
Step 3. (Page 12) Install the vent system and
exterior termination.
Step 4. (Page 24) Field Wiring
a. Millivolt Appliances – Install the
operating control switch (not factory
provided) and bring in electrical service
line for forced air-circulating blower
(optional equipment).
b. Electronic Appliances – Field wire
and install operating control switch.
Step 5. (Page 25) Install blower kit (optional
equipment).
Step 6. (Page 26) Make connection to gas
supply.
Step 7. (Page 27) Verifying appliance opera-
tion.
Step 8. (Page 28) Install the logs, decorative
volcanic stone and glowing embers.
Step 9. (Page 32) Removing and Installing
glass door assembly.
Step 10. (Page 32) Adjust burner to ensure
proper flame appearance.
Step 11. (Page 34) Install the hoods.
Step 12. (Page 35) Attach Safety in Operation
Warnings.