17
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • MERIT
®
SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • INSTALLATION INSTRUCTIONS
WARNING
•
dO NOT attempt to install
the logs until the appliance
installation has been
completed, the gas line
connected and tested for leaks
and the initial burner operation
has been checked out.
•
The size and position of the log
set was engineered to give the
appliance a safe, reliable and
attractive flame pattern. Any
attempt to use a different log
set in the fireplace will void
the warranty and will result
in incomplete combustion,
sooting, and poor flame
quality.
•
Logs get very hot and will
remain hot up to one hour
after gas supply is turned off.
Handle only when logs are
cool. Turn off all electricity
to the appliance before you
install grate, volcanic stone,
embers, and logs.
•
This appliance is not designed
to burn wood. Any attempt to
do so could cause irreparable
damage to the appliance and
prove hazardous to your safety.
•
If logs are not installed
according to the log
installation instructions, flame
impingement and improper
combustion could occur and
result in soot and/or excessive
production of carbon monoxide
(CO), a colorless, odorless,
toxic gas.
4. Place the glowing ember material
(rockwool).
Note: The bag of Glowing Embers
contains enough rockwool for several
applications; therefore, do not use the
entire bag at one time. For best glow-
ing effect, replace the ember material
annually.
Refer to Figure 22. Separate the glowing
ember material into pieces about the size
of a quarter. Keep the pieces fluffed up, not
matted. Distribute the pieces over the sur-
face of the burner, as shown in Figures 23
and 24. Do not use more than is necessary.
Position the embers on the small holes of
the ember bed area.
Note: Make sure the glowing ember
material does NOT cover the main
burner slots.
Bag of Glowing
Embers (Rockwool)
Separate into individual
“Quarter-sized” pieces.
Figure 22
Step 8. Install Volcanic Stone,
Glowing Embers (Rockwool),
and Logs
NOTE: Turn OFF all electricity to the fire-
place before installing volcanic stone,
glowing embers, or logs.
1. Remove the front glass enclosure panel
(see “Removal and Installation of Glass
Enclosure Panel,” on previous page).
2. Install ceramic brickaded panel liners
.
3. Install decorative volcanic stone.
Refer to
Figure 21. Sprinkle the decorative volcanic
stone in a pleasing pattern directly on the
firebox bottom, along the slope and to the
back, at the right and left sides of the burner.
Figure 21
Volcanic Stone
Place Volcanic
Stone As Shown
5. Install the Logs.
The logs have locating notches or slots to
help ensure that they are properly positioned.
The top logs that rest on lower logs, do so
over notches, indents or nubs. Proper log
placement is critical to prevent sooting.
Logs should be placed in the gaps between
the flame peaks and should be positioned so
they do not impinge the flames. Follow the
log placement instructions exactly.
MLBV-35:
Install logs as shown in Figure 23.
MLBV-40:
Install logs as shown in Figure 24.
