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LENNOX HEARTH PRODUCTS • MONTEBELLO
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.
DETAILED INSTALLATION STEPS
The appliance is shipped with all gas
controls and components installed and pre-
wired.
1. Remove the shipping carton, exposing the
front glass door on the valve access side.
2. Using a Phillips screwdriver, unfasten two
(2) screws located at the top of the glass
frame (see Figure 46 on page 26). Tilt the
top of the glass frame away from the unit.
Lift it carefully off the bottom door track
and set the door aside, protecting it from
inadvertent damage.
DLX DIRECT VENT GAS FIREPLACES (MDLX40/45) • INSTALLATION INSTRUCTIONS
®
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
following steps for detailed procedures.
Step 1. (Page 9) Construct the appliance
framing. Position the appliance
within the framing and secure with
nailing brackets.
Step 2. (Page 11) Route gas supply line to
the right side.
Step 3. (Page 12) Install the vent system and
exterior termination.
Step 4. (Page 21) Connect 120 VAC electrical
power to the appliance receptacle.
Step 5. (Page 23) Remove glass
door assembly.
Step 6. (Page 23) Make connection to
gas supply.
Step 7. (Page 23) Verifying
appliance operation.
Step 8. (Page 24) Install ceramic panels,
logs, and glowing embers
OR
contemporary burner/floor kit,
porcelain panels, and media.
Step 9. (Page 26) Install glass
door assembly.
Step 10. (Page 26) Adjust burner to ensure
proper flame appearance.
Step 11. (Page 29) Attach safety in
operation warnings.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Step 1. FRAMING
Frame these appliances as illustrated in
Figure 11 on Page 10, unless the appliance
is to be installed in a corner. See Figure 12
on Page 11 for corner framing installations.
All framing details must allow for a minimum
clearance to combustible framing members
as shown in Table 5 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
appliance top spacers 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 10). 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
Unit Being Secured By Its Nailing Flanges
To The Framing
To The Framing
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.
Unit Being Secured by Its Nailing
Unit Being Secured by Its Nailing
Flanges to the Framing
Flanges to the Framing
Figure 10
9
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