Lennox Hearth MERIT PLUS MP-36OD - Manual (Page 6)

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 6
ASSEMBLY STEPS
Note: The following steps represent the normal
sequence of installation. Each installation is
unique, however, and might require a different
sequence.
1. Position fi rebox prior to framing or into
prepared framing.
2. (Outdoor Installations) Waterproof the
fi replace. See Waterproofi ng The Fireplace
on Page 6.
3. Install the chimney system.
4. Install an outside air cover or an airgate kit, if
fi replace is being installed indoors (optional
accessory, see Page 23 for ordering infor-
mation). The Airgate kit is required on all
INDOOR installations when an outside air
kit is installed. The Airgate Kit is NOT ap-
proved for use on outdoor installations.
5. Install outside air kit (provided). This kit
is required on ALL outdoor installations
(optional for indoor installations).
6. Plumb gas line if a decorative gas appliance
will be used. (Gas connections should only
be performed by an experienced, licensed/
certifi ed tradesman).
7. Complete the installation, fi nish wall mate-
rial, surround and hearth extension to your
individual taste.
8. Assemble and attach optional glass door
assembly.
Study the illustration of the installation, Figures
1 & 2, to get a general idea of each element of
your fi replace system.
PRE-INSTALLATION NOTES
The fi replace may be installed directly on a
combustible fl oor or raised on a platform of an
appropriate height. Do not place fi replace on car-
peting, vinyl or other soft fl oor coverings. It may,
however, be placed on fl at wood, plywood, particle
board or other hard surfaces. Be sure fi replace
rests on a solid continuous fl oor or platform with
appropriate framing for support (and for indoor
installation ensure that no cold air can enter the
room from under the fi replace).
The fi replace may be positioned and then the
framing built around it, or the framing may be
constructed and the fi replace positioned into
the opening.
Usually, no special fl oor support is needed for
the fi replace, however, to be certain:
1. Estimate the total weight of the fi replace
system including chimney and surround
materials such as brick, stone, etc., to be
installed. Shipping weight for the fi replace
may be found on Page 9 (see Product
Reference Information).
2. Measure the square footage of the fl oor space
to be occupied by the system, surrounds and
hearth extensions.
3. Note the fl oor construction, i.e. 2 x 6’s, 2 x
8’s or 2 x 10’s, single or double joists, type
and thickness of fl oor boards.
4. Use this information and consult your local
building code to determine if you need ad-
ditional support.
If you plan to raise the fi replace and hearth
extension, build the platform assembly then
position fi replace and hearth extension on
top. Secure the platform to the fl oor to prevent
possible shifting.
WATERPROOFING THE FIREPLACE
Outdoor Installations
Although the fi replace is designed to drain to
the front most of the water from rain and other
sources that may enter the hearth area, conden-
sation and unusual conditions may cause water
to collect inside the fi replace bottom.
To prevent water collection, the builder must
provide a means to drain water from under
the fi replace by building or installing a water
collector of the builder's choice before posi-
tioning the fi replace on its location.
INDOOR INSTALLATIONS ONLY
Outside Air Cover
If the optional outside air kit is not required
in an indoor installlation, you must install the
outside air cover to close the opening for the
outside air kit (see Figure 8, Photo C).
WARNING
Indoor Installations - If the optional
outside air kit is not required, the
outside air cover must be installed
for safe fi replace operation.
AVERTISSEMENT
Installations d’intérieur - si le kit
extérieur facultatif d’air n’est pas
exigé, la couverture extérieure
d’air est exigent pour l’opération
sûre de cheminée.
The Outside Air Cover is included in the Instal-
lation Instrctuions package provided with this
fi replace. Follow the steps below:
a. Remove the Outside air collar located on
the side of the fi replace. Do not discrd the
screws (see Figure 8, Photos A & B).
b. With the screws previously removed, install
the cover provided with the installation
instructions kit (see Figure 8, Photo C).
Figure 8
Four (4) Screws
Outside Air Collar
Viewed from right side of fi replace
Outside air collar Removed
Outside Air Cover Installed
Required on indoor installations if
an outside air kit is NOT installed.
A
B
C
Outside Air Kit Gate Installation
(optional kit) Indoor Installations Only
The installation of the Air Gate (shutter) is required
on all indoor installations to prevent cold air
infi ltration when an outside air kit, OAK-OD (duct
& hood), is installed. The Outside Air Kit Gate,
OAKG-OD (air gate & arm), must be purchased
and installed before the fi replace is installed.
1. Remove the Outside Air Collar located on
the right hand side of the fi replace (retain
the screws). See Figure 8, Photos A & B.
2. Install the Outside Air Kit Gate (OAKG-
OD) per the instructions in the kit and the
following instructions using the screws
provided.
a. Assemble the Air Gate Arm to the Air
Gate as shown in Figure 9.
b. Take the Air Gate Assembly and feed the
arm through the round opening (see Figure
10 ) and then through the side frame opening
in the front as shown in Figure 11.
Right Side
Outside Panel
on Fireplace
Right Outside
Panel on
Fireplace
Right Side
Outside Panel
on Fireplace