Caution, Attention – Lennox Hearth MERIT PLUS MP-36OD User Manual

Page 5

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

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)

Level

Chase Enclosure - Indoor Installation

Figure 3

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"

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