Zero Clearance Fireplace Installation; Log Set Installation - Lennox Hearth Products Merit Series Installation And Operation Manual

Zero Clearance Fireplace Installation
This insert may be installed in a masonry or factory built/zero clearance
(ZC) fireplace. When installing in a ZC fireplace, the ZC grate must be
removed and the ZC damper must be removed or secured open. The ZC
doors, screen, refractory or masonry lining, baffles and smoke shelf may
be removed if necessary to install the gas insert. However, do not cut
or alter the fireplace components. The removal of any parts to facilitate
installation must not alter the integrity of the inner or outer shells of the
fireplace cabinet. Any parts removed must be replaceable if the insert is
taken out of the fireplace or the fireplace must be clearly marked with the
metal label that states: "This fireplace has been altered and is no longer
safe to operate." The insert is designed to fit into a ZC fireplace with a
minimum firebox height of 17-1/4" (438mm). To facilitate this the hood
will need to be removed and discarded (Note: The screws should be
replaced in the insert body). Installation of the flue collar is removable
(see Flue Collar Connection).
If the factory-built fireplace has no gas access hole(s) provided, an ac-
cess hole of 1-1/2" (37.5 mm) or less may be drilled through the lower
sides or bottom of the firebox in a proper workmanship like manner. This
access hole must be plugged with a non-combustible insulation after the
gas supply line has been installed.
The installer must mechanically attach the marking supplied with the gas
fireplace insert to the inside of the firebox of the fireplace into which the
gas fireplace insert is installed.
Log Set Installation
If logs are not installed according to the log installation instruc-
tions, flame impingement and improper combustion could
occur and result in soot and/or excessive production of carbon
monoxide (CO), a colorless, odorless, toxic gas.
The size and position of the log set is critical to achieve a safe,
reliable and attractive flame pattern. Any attempt to use a differ-
ent log set in the fireplace will void the warranty and will result
in incomplete combustion, sooting and poor flame quality.
*Brick Panels are not offered for the Medina™ Gas Insert.
1. Remove log rack (2 screws) and install rear log on retainer. See Figures
7 and 8).
2. Reinstall log rack with rear log.
THROUGH LOG RACK AND BURNER PAN.
3. Install light layer of mineral wool directly over ports. See Figure 9.
- A light layer will give a more constant rear flame.
- A heavy layer will give more glow, but will need to be adjusted after
light up.
4. Install front logs on retainer slots. See Figure 10.
5. Place top log on pin. See Figure 11.
6. Place black embers around perimeter of mineral wool. Important!!!
Do not cover ports with black embers. See Figure 11.
10
IMPORTANT!!! SCREWS PASS
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
 Screws
Figure 7
Retainer
Figure 8
Figure 9
Rear Log