13
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • MERIT PLUS
®
DIRECT VENT GAS FIREPLACES (MPDP35/40) • CARE AND OPERATION INSTRUCTIONS
Step 2. Install Volcanic Stone.
Sprinkle the volcanic stone in a pleasing pat-
tern. The volcanic stone should be placed
directly on top of the firebox bottom, along the
front and to the back at the right and left sides
of the burner. Position any optional ceramic
fiber liners before placing the stone. Logs
should be positioned after the volcanic stone.
Note:
This appliance is provided with enough
Glowing Embers for several applications, do
not feel compelled to use all that is in a new
bag. For best glowing effect, replace the ember
material annually. Replacement Glowing Em-
bers are available (Catalog Number 88L53).
Glowing Embers
Bag of Glowing
Embers (rockwool)
Separate into Quarter
Size (separate) Pieces
Figure 9
Glowing Embers
Figure 10
REFERENCE
Firebox Accessories / Parts
Cat. No.
Model No.
Description
88L53
FGE
Bag of Glowing Embers
80L42
FDVS
Bag of Decorative
Volcanic Stone
Do not use more than is necessary. When
properly positioned, the Glowing Embers will
cover approximately 65% of the front burner
and with no appreciable gaps or openings.
Ensure that the main burner ports remain
uncovered by the ember material.
Step 4. Placement of Logs
All 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.
Step 5.
Position the individual logs as shown
in
Figures 11 and 12
. Logs should be placed
in the order shown. All logs that have notches
to fit over the grate tines should be positioned
with these notches directly against the grate.
Handle logs carefully to prevent breakage.
Proper log placement is critical to encourage
outstanding flame appearance and prevent
sooting. When positioned properly as shown,
logs will be positioned between flame peaks
and will not impinge any flames.
Refer to
Figure 11
for MPDP35 Series ap-
pliances and
Figure 12
for MPDP40 Series
appliances.
Step 3.
Separate the Glowing Embers into
pieces about the size of a quarter (
Figure 9
).
Keep the pieces fluffed up, not matted.
Distribute these pieces over the front surface
of the burner, as shown in
Figure 10
,
but DO
NOT PLACE OVER BURNER SLOTS
.
WARNINGS
•
DO NOT attempt to install the
logs until the appliance instal-
lation 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, soot-
ing, 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 appli-
ance 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 accord-
ing to the log installation
instructions, flame impinge-
ment and improper combus-
tion could occur and result in
soot and/or excessive produc-
tion of carbon monoxide (CO),
a colorless, odorless, toxic
gas.
INSTALL VOLCANIC STONE, GLOWING
EMBERS, AND LOGS
NOTE: Turn off all electricity to the appliance
before you install the volcanic stone, embers
and logs.
Step 1.
Remove the appliance front door (see
Removing Glass Enclosure panel on
Page 12
).
