FMI MASONRY FIREBOX MM33 - Manual (Page 12)

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CaUTIon: Combustion air inlet ducts shall
not terminate in attic space.
The maximum height for the air vent can not
exceed 3 feet below the flue gas outlet of the
termination.
FaCToRY BUIlT CHIMneY sYsTeMs
The Grand Meridian is designed to be installed with 1)
FMI PRODUCTS, LLC Metal Chimney System.
This Grand Meridian fireplace is intended as a
2)
supplemental heat source only. It is not intended
as a primary heat source.
It is the responsibility of the contractor/installer
3)
(not the manufacturer) to ensure that adequate
combustion air is provided for proper function of
this fireplace. Fireplaces take up a large volume of
replacement air from outside the house and if the
house is of airtight construction, smoke spillage
may occur if proper draft is not achieved.
There are many conditions beyond the
4)
manufacturer’s control regarding improper fireplace
operation. The manufacturer cannot ensure
“smoke free” operation, nor can the manufacturer
take on the responsibility for problems with
surrounding construction; chimneys that have not
venting installation
Figure 13 - Outside Air Kit Venting
Secure to Collars with Metal Tape, Screws
or Straps (Min. of 1/4" x 20" in size)
Air Inlet
Location
Must
Allow For
Bushes
or Snow
Vent Hood
Required
for Wall
Installation
Vented Crawl
Space (Check
Local Codes
Before Installing
in a Vented
Crawl Space)
oPTIonal oUTsIde aIR KIT (Model MM4aK)
The Grand Meridian Fireplace needs enough re-
placement air to function properly and some local
building codes may require outside combustion air
to be provided. If no replacement air is provided,
improper flue drafting may occur, creating negative
pressure whereby smoke may enter the home, es-
pecially in homes that are very well insulated and
tightly sealed. Check local building codes for specific
requirements.
The installation of an outside air kit should be per-
formed during the rough framing of the fireplace due
to the nature of it's location. Outside combustion air
is accessed through a vented crawl space or through
a sidewall (Figure 13). If crawl space is used, check
local codes for proper termination.
Be sure that you carefully check the source of the
outside air before you choose the site for your air in-
take. You don’t want a place where snow will collect,
where bushes or trees will be growing or a location
that is too close to any other structure.
Install Combustion Air Kit into the firebox through the
side wall opening provided. A 4" dia. hole will also be
required through the firebrick side lining (see Figure
12). The tubing that goes out of the firebox wall must
feed into a flexible metal conduit as the source for
outside combustible air. Install a screened termina-
tion cap to keep out small animals.
Figure 12 - Outside Air Kit Installation