Lennox Hearth MERIT PLUS MP-36OD - Manual (Page 5)

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
5
Figure 4
Insulate Joists
Same As Ceiling
Draft Stops
Firestop
CTDT
Termination
Note: Non-
Combustible
Chase
Flashing
Must Be
Used To
Cover
Chase
Opening
Optional
Insulation
In Outside
Walls Of
Chase
Solid
Continuous
Surface
Outside
Base Insulation
(Thermal Barrier)
8'
Level
Chase Enclosure - Indoor Installation
Figure 3
Hearth
Hearth
Indoor Locations - Top View
Indoor Locations - Carefully consider the
position of the fi replace opening with re-
spect to the location of adjacent or nearby
stairwells, bath or kitchen exhaust fans
and/or return air registers for forced air
furnaces/air conditioners that could cause
a smoking fi replace condition if the house
is tightly insulated.
Figure 5
When choosing a location, care must be taken
to avoid places where fl ooding or running
water may be a problem.
DO NOT place furniture or other items such
as plants or decorative objects within 60" of
the fi replace front face.
Figure 7 Clearances
Restrictions for Outdoor installations:
• Outside Air Kit must be installed and
fully open on the outdoor installation. On
the indoor installation is optional unless
mandated by local building codes.
• Minimum chimney height for the outdoor in-
stallation is 7' 3" (one 4 foot pipe section).
• Only non-combustible materials are al-
lowed on the front face (Front Fireplace
Frame) and around the perimeter within
1-5/8” on the top and 1/2" on the sides
(see Figures 1, 51 & 52).
Combustible materials may project beyond the
sides of the fi replace opening as long as they
are kept within the shaded areas illustrated in
Figure 7.
CLEARANCES
Minimum clearance to combustibles for the
appliance is as follows: sides and back - 1” (25
mm), fl oor - 0” (0 mm), adjacent wall - 12” (305
mm), ceiling - 37 1/2” (953 mm).
Note: Clearance at the nailing tab is 0" (0mm)
(see Figure 25).
Note: Adjacent wall considerations are for
an adjacent wall on only a single side. Walls
should not be placed at minimum distance
at both sides of the fi replace.
Outdoor Locations - Top View
Figure 6
LIVING SPACE
PATIO
Optional
Hearth
Extension
Air Inlet (inlet
must be free of
any obstructions)
Outdoor Locations - Carefully consider the
position of the fi replace opening with respect
to the location of adjacent or nearby stair-
wells, doors, windows, walk ways and over
hanging trees, patios and wires.
Do NOT cover frame surface
with combustible materials.
12" Wall
Covering
45°
12"
1"
Door
Opening
Safe
Zone
To ensure that the outside air
kit remains open for an outdoor
installation, this fi replace should
not have a combustion air gate
control installed (OAKG-OD). If
this unit is installed indoors,
you must install the outside
combustion air cover provided or
an optional outside air kit gate
(OAKG-OD) before the fi replace
is framed in place.
CAUTION
Assurer que les restes extérieurs
de kit d’air ouverts pour une instal-
lation extérieure, cette cheminée
n’ont pas une commande de porte
d’air de combustion a installé
(OAKG-OD). Si cette unité est
installée à l’intérieur, vous devez
installer la couverture extérieure
d’air de combustion fournie ou
une porte extérieure facultative
de kit d’air (OAKG-OD) avant
que la cheminée soit encadrée
en place.
ATTENTION
Optional
Outside Chase
LOCATION OF FIREPLACE
Carefully select the proper location for heat
circulation, aesthetics, chimney obstructions,
air inlet location and clearance to side wall(s).
With proper pre-planning, a slight adjustment
of a few inches can save considerable time and
expense later during construction and assembly.
See Figures 5 & 6 for examples.
When locating the fireplace, limit the final lo-
cation of combustible finish materials to the
“Safe Zone” shown in Figure 5.
DO NOT permanently place furniture or other
items such as decorative pillows within 60"
of the fi replace front face.
[DETAIL/CUTAWAY]
Damper Rod in LEFT (CLOSED) Position
To adjust damper, PULL damper rod
FORWARD (toward front of fireplace),
then slide all the way LEFT (CLOSED) or
RIGHT (OPEN), until locked in position.
Damper
CLOSED
Damper
OPEN
Combustion Air Actuator
~
Lintel Damper Rod