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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • MERIT PLUS
®
DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS
Step 9. INSTALL VOLCANIC STONE,
GLOWING EMBERS, AND LOGS
Glowing Embers
Bag of Glowing
Embers (rockwool)
Separate into Quarter
Size (separate) Pieces
Figure 51
Figure 52
REFERENCE
Firebox Accessories / Parts
Cat. No. Model No. Description
88L53 FGE Bag of Glowing Embers
80L42 FDVS
Bag of Decorative
Volcanic Stone
Step 3. Separate the Glowing Ember
(Rockwool) into pieces about the size of a
quarter (Figure 51). Keep the pieces fl uffed
up, not matted. Distribute these pieces over
the front surface of the burner, as shown
in Figure 52. 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 fl ame peaks
and should be positioned so they do not
impinge the fl ames.
Step 5. Position the individual logs as shown
in Figures 53, 54, and 55. Logs should be
placed in the order shown. All logs that have
notches to fi t 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 fl ame appearance and prevent
sooting. When positioned properly as shown,
logs will be positioned between fl ame peaks
and will not impinge any fl ames.
Refer to Figure 53 for MPD33 Series
appliances, to Figure 54 for MPD35 Series
appliances and to Figure 55 for MPD40 and
MPD45 Series appliances.
WARNING
• DO NOT attempt to install the
logs until the appliance installa-
tion 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 appli-
ance a safe, reliable and attractive
fl ame pattern. Any attempt to use
a different log set in the fi replace
will void the warranty and will
result in incomplete combustion,
sooting, and poor fl ame 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 accord-
ing to the log installation instruc-
tions, fl ame impingement and
improper combustion could
occur and result in soot and/or
excessive production of carbon
monoxide (CO), a colorless,
odorless, toxic gas.
NOTE: Turn off all electricity to the appliance
before you install volcanic stone, embers
and logs.
Step 1. Remove the appliance front door (see
Removing Glass Encloslure panel on Page 32.
Step 2. Install decorative volcanic stone—
Sprinkle the decorative volcanic stone in a
pleasing pattern. The volcanic stone should
be placed directly on top of the fi rebox
bottom, along the front and to the back at the
right and left sides of the burner. Position any
optional ceramic fi ber 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 Embers are available (Catalog
Number 88L53).
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