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FREQUENTLY ASKED QUESTION
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INDEX
Background
Meridian Insert Design Questions
Tile Colors Available
Installation Questions
Maintenance questions
Operational Questions
Cooking in a Meridian
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BACKGROUND
The urgent need
for an alternate fuel to heat our homes became painfully evident with the OPEC
oil embargo of 1973. Today, that need not only remains, but is even greater.
There is are economic, ecological, and political reasons for seeking an
alternate, renewable source of fuel for heating and cooking. If your budget is
straining to cover oil at its current cost, think how cold (or broke) you could
be in another couple of years.
The oil embargo
was the impetus for Richard Johnson to start the design work for his Meridian
stove. Richard foresaw an immediate and a long-term need for a stove that used
wood (a renewable resource), and that was highly efficient as well as
aesthetically outstanding. It was, Richard felt, time to evolve beyond the down
and dirty (and inefficient and ugly) metal stove to something that made use of
state-of-the-art materials, design principles that incorporated an advanced
knowledge of thermodynamics, and was so distinctive and distinguished in
appearance that people would welcome it as a centerpiece for their living rooms.
MERIDIAN INSERT DESIGN QUESTIONS
Besides
the beauty, what is the benefit of ceramic over metal?
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In all high-heat
furnaces and kilns, refractory ceramic is the mandatory material. Ceramic
walls allow higher temperatures for complete combustion, and will not
deteriorate from excessive and continuous firings. Ceramic furnaces and
crucibles are used to melt metal and cast iron.
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Ceramic has the
extraordinary characteristic of heat retention, while the thermal mass allows
the heat to be stored and released long after the fire has gone out.
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Ceramic heat has
a unique, mild but penetrating warmth.
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The exterior of
a Meridian ceramic stove is safe to touch at all times.
Characteristics of Ceramics.
Ceramic bodies have widely differing compositions and characteristics. The
foremost criterion for our Meridian is the ability of the ceramic to withstand
the high temperatures that occur in the combustion chamber. Basically, we must
have a zero coefficient of expansion ceramic body. That is, one that does not
expand or contract with heat so that neither the rate at which temperature rises
or the peak it attains damages or degrades the ceramic. We use this wonderful
refractory formula in our brass foundry furnace, and our Kamado ceramic barbeque
grills and kiln. There is nothing better than our Meridian ceramic formula.
Second, the
Meridian has an extremely low R factor. This is the rate at which heat passes
through the walls. It’s a measure of heat retention ability. The Meridian
combustion chamber walls have the finest available formula, which results in
high heat for complete combustion, and the retention of that heat in the outer
walls. This permits slow release of the heat, over a long period of time, an
ideal characteristic for a stove.
Consider how
different two ceramic mugs are in terms of how they transfer heat. One, thin
walled, will rapidly pass the heat of its contents through and literally be too
hot to handle. Another, the same size but with thicker walls, holds much of the
heat within, and can be handled comfortably. Our Meridian furnace mimics the
latter, tightly holding and then slowly dissipating its heat.
Yet a stove isn’t
of much use if you can’t warm your hands on a cold day. The ceramic glass on the
Meridian provides a heat as well as a visual window through which warmth passes
readily, to provide quick warmth while the stove retains its overall efficiency.
Why install a
Meridian insert into a beautiful fireplace?
The Meridian you
install will be no less beautiful than the existing fireplace, and may in fact
be more attractive! But the most important reason for installing the Meridian is
to replace the inefficiency of a traditional fireplace with a ceramic insert
that is vastly better at making full use of the fuel to warm your rooms, rather
than the outside! That increased efficiency translates very directly and
substantially into a decrease in heating expense.
Unfortunately,
your beautiful fireplace is very inefficient as a heat source. It does provide
wonderful radiant heat while sitting close in front of the fire, but at the same
time it is drawing cold outside air in and sending 80% of the warm air up the
chimney. The net warmth, if any, is negligible. This is one reason most
fireplaces are seldom used
Ease of use is
another reason for choosing a Meridian. An open fireplace is often difficult to
start, difficult to refuel, and difficult to keep lit. A Meridian is easy in
every way. Its spherical ceramic combustion chamber is fast to start, easy to
keep going, long burning, and needs little or no attention. You will enjoy using
your Meridian often. We have customers who have used their Meridian continuously
all winter long for more than 20 years.
What is meant by the term
“Meridian heat”?
There are four
types of what we call “Meridian heat”:
1. Slow Radiation.
The heavy ceramic walls or ceramic mass store and release the ceramic heat as a
slow, penetrating warmth. Often called a “Kachlofen” heat after the famous
centuries-old German and Scandinavian ceramic tiled stoves. There is nothing
like ceramic heat.
2. Instant
Radiation.
The ceramic glass emits instant radiant heat from the fire, almost as if there
were no door. Returning home after being away, you will be warmed the second you
start the fire. There is no waiting for the ceramic mass to become heat soaked.
3. Infrared Rays.
Infrared, or long-wavelength radiation is much like the warmth we receive when
in the sun, versus that in the shade. If you can see the flames through the
ceramic glass door from where you are sitting, you are being warmed by infrared
as the rays pass through the glass.
4. Convection.
After the warmth of the ceramic walls, nothing is more important than having the
warmth from natural convection obtained from the double walled construction. All
Meridians are designed with an airspace between the combustion chamber and the
outer walls. The extremely hot, trapped air expands, moving upward and out of
the Meridian. This air circulates air throughout the room(s). This natural,
convective warm room air does not require a fan (more cost savings), since its
movement depends on the fuel load of the fire. Convection, created by the double
wall design, is an absolute necessity for proper operation of a stove or
fireplace.
Is
there an advantage to the round or spherical combustion chamber?
Yes! A spherical
combustion chamber is the single most important factor in proper combustion. The
general engineering design rule is simply that “round is better than square” in
combustion chambers. This is true in our car engine cylinders, jet engines,
better kilns, furnaces, and a properly designed wood stove. This is an easy
choice from a design point of view, but a difficult choice from a manufacturing
perspective! A good sphere is very difficult to make. But it’s essential, so
we’ve mastered the art of doing it. You will be rewarded by seeing the proper
circulation and mixing, and the complete combustion resulting from the spherical
design, or when viewing the flames through the glass. Or, more important, when
you and your neighbors view the emissions from the top of your chimney…..nothing
but clear, smokeless and clean emissions.
Do the heavy ceramic combustion chamber walls increase the efficiency with which
wood is burned?
Yes. The heavy
walls are extremely important. Heavy ceramic walls are nearly as important for
proper and complete combustion as a spherical design. You will find that there
is virtually no ash. You will find you need to remove ashes very infrequently,
and when you do they will remarkably different and more compacted, indicating a
very complete burning or consumption of the wood.
Where does the insert
obtain its combustion air?
The combustion air
and its oxygen, needed to burn the wood or provide oxygen to the gas log, is
provided by air drawn down the chimney. Nice warm room air is not used for
combustion. This feature is one of the keys to the efficiency of the Meridian
insert. You are not wasting warm room air to feed oxygen to the fire. To do so
would displace this warm room air and replace it with cold air drawn from
outside your home.
Is a Meridian a
radiant heater or a convective heater?
Meridian stoves
provide both radiant and convective heat. They provide immediate and intense
radiant heat through the large ceramic glass, and continue providing penetrating
and mild ceramic heat from the thermo mass of the ceramic structure.
Equally important
is that Meridians are double walled. That is, the combustion chamber is entirely
separate from the exterior walls, leaving airspace between them. The extremely
hot air between expands and rises, pushing hot room air through the Meridian
exhaust vents and creating circulation by natural convection.
Is a fan or blower necessary to circulate the heat from the double wall?
No.
Natural convection will do an excellent job, without the need for a noisy (and
expensive-to-operate) fan or blower. The amount of convective heat being
circulated depends on the fuel load. The hotter the combustion chamber, the
hotter the air is and the faster heat is circulated. Cold air is never blown
around the room.
Does our fireplace opening need to fit the Meridian insert exactly?
No. We take
your fireplace opening dimensions and make a “surround” or collar, matching
stove’s tile color to cover and seal the space, if any, between the insert and
the opening. It is important to close this airspace, and it can be done
attractively by the surround.
If the hearth or
bottom of the fireplace is below the front opening of the insert, the hearth
must be raised level with the front of the fireplace. Often, all that’s required
is to place bricks or pour a small amount of concrete to make the floor level
and even with the front of the insert’s opening. Often this hearth or floor is
raised, so there is no airspace above the insert and the top of the opening of
the fireplace.
How heavy is the insert?
The Meridian
insert weighs approximately 600 pounds.
If I buy a gas Meridian insert or stove, can I later use wood? Or vice versa?
Yes.
The Meridian gas insert can be operated on wood or gas and converted without
major modification, by just removing the gas burner and plugging the hole with
our High Temperature Coating.. The chimney or flue must be an all-fuel system.
Is the glass in the door subject to cracking due to high temperature?
No. The glass is a high temperature ceramic glass that will withstand all
temperatures that can be obtained from wood. The glass is guaranteed to
withstand 2000 degrees F.
What about the door?
The door, frame,
and handle are over 50 pounds of solid brass pr cast iron and will never deteriorate or lose
their beauty.
INSERT AND SURROUND TILE COLORS
Do I have a choice of tile colors for the Meridian insert and surround?
You
certainly do. We offer a wide selection of tile colors and textures. Your
Meridian will be custom made for you, with close attention to your selection and
direction as to the color scheme and texture. Matching your décor is of the
utmost importance in warming your heart as well as your room.
INSTALLATION QUESTIONS
What measurements should I send you when ordering my Meridian insert?
We need the
measurement (in inches) of the height and width of the front of the fireplace
opening, the height and width of the rear (back), and the depth (distance from
the front to the back). With these measurements, we can determine the dimensions
of the surround that will seal the opening, if any, between the insert and the
fireplace opening
Does our fireplace opening need to fit the Meridian
insert exactly?
No. We take your
fireplace opening dimensions and make a “surround” or collar with tile to match
the stove. It is important to close this airspace, and this is accomplished
attractively with the surround. The surround is mortared or otherwise secured to
the fireplace wall to form an airtight seal.
Can the average
homeowner install the Meridian insert?
Absolutely. There are no structural modifications whatever to your fireplace.
You can expect to reward your friends with a beer or two for helping with the
moving portion of the installation, as the Meridian is approximately 600 pounds
(relatively heavy). It is, however, fully assembled, strong and in no way
fragile.
What tools and equipment will I need to install the Meridian insert?
There are no
special tools needed. A piano dolly, pallet jack or sturdy cart is helpful in
moving the Meridian to the fireplace. A set of Teflon skid pads, available at
most home supply places, can also make the job easier. A power screwdriver is
handy for dismantling the crate.
How will I install my new Meridian insert into the fireplace opening?
Your
new Meridian insert will come with simple and detailed instructions. Basically,
the insert will just slide into the fireplace opening, and rest flush with the
front of the fireplace.
Placing the
Meridian insert is facilitated by having two 1/8t”x2”x24” metal
runners on the bottom of the insert, 20 inches apart. Before installing the
insert, two similar thin metal strips are placed on the fireplace hearth. When a
light coat of oil or grease is applied to one of the strips, the Meridian slides
easily into the fireplace opening. These metal strips are supplied with the
Meridian.
Another method is
to use two pieces of one inch or other diameter pipe approximately 20 inches
long underneath the insert, so it can be rolled into the fireplace opening. The
pipe is often left under the insert.
Is a flue
pipe or other direct connecting flue necessary?
If the present
chimney is carefully inspected and found to be structurally sound and clean of
creosote, nothing else needs to be connected. Just slide your Meridian insert
into the fireplace and it will operate beautifully.
Can
the Meridian insert be installed into a non-combustible wall?
Generally (subject
to local codes) yes. For homes constructed of brick, block, or other
non-combustible wall materials, and where building departments permit, the
Meridian can be installed much as a wall air conditioner would be. Just cut a
hole in the wall and slide the Meridian in. Of course, proper bracing is
necessary, as is an approved exterior flue pipe. The transformation of a cold
room into a warm living room is remarkable.
When I move can I take the Meridian insert with me? Will I have to repair the
fireplace after I remove the Meridian insert?
Whoever said you
can’t take it with you wasn’t talking about a Meridian. You can easily remove
your Meridian insert and take it with you when you move. However, you will find
that the Meridian often adds considerable value if you are selling. If the home
you’re leaving was a rental, be sure to remove the Meridian as you do all your
valuable possessions. The Meridian is not attached to the real property, and
thus remains yours (rather than the landlord’s).
MAINTENANCE QUESTIONS
How do I clean the
glass on my Meridian insert?
The ceramic glass
is self cleaning and you will never need to clean the glass. The combustion
chamber’s high temperature keeps the glass absolutely clear.
Is the brass coated to resist tarnishing? How do I clean the brass on my
Meridian insert?
The brass door is
not coated and is polished the same way brass has been polished for centuries,
or left unpolished for an antique, beautiful, and natural look. The most
important feature of solid brass is that it is solid. You can be assured
that this 50 pound solid brass door and frame will never chip, flake, or be
damaged by accidentally hitting it. This is a lifetime investment in quality.
How often is it
necessary to clean the chimney or flue?
You will rarely be
cleaning your Meridian. The Meridian ceramic and spherical combustion chamber
provides the high heat needed to burn hot and clean. The benefit is the lowest
emissions of any contemporary stove. Look at the top of your chimney while the
Meridian is lit and you will see. . .no smoke! Look at the combustion walls . .
.they are white! Look at the glass door. . .it’s clear! Look at your neighbors
faces. . . smiling!
OPERATIONAL QUESTIONS
How much area will the
Meridian insert heat?
A reasonably
accurate answer can only be arrived at after figuring out how well insulated the
room is, ceiling height, square footage, fuel load, ambient temperature etc.
The Meridian
insert is putting out a tremendous amount of BTU’s per hour or more, so you can expect that a
large area will be heated by radiation and convection. A quick answer would be
approximately 700 to 1000 square feet, and possibly much more. You will not be
disappointed.
Will
wood burn longer in my Meridian insert then my fireplace?
The Meridian, with
its spherical, heavy-walled ceramic construction, will burn longer and more
efficiently than any stove in the world, and certainly far better than your
existing fireplace.
How often will I have to add wood?
That depends on the type of wood and the combustion air (draft) settings, but as
an average, every 4 to 9 hours.
The Meridian will
burn not only hotter, but also more controllably and above all else, cleaner
than any competing stove. By controlling the amount of combustion air, you
control the rate and length of the burn. One of the criteria might be the
ability to have coals to restart the fire in the morning. With a Meridian,
you’ll have them.
COOKING IN A MERIDIAN
Can we cook in our
Meridian insert or stove?
You certainly can.
In the tradition of our Kamado ceramic BBQ grills, which are the best cookers in
the world, you will have the finest oven in the world, surpassing even our
Kamado. As all Kamado owners know, cooking food in ceramic is different and
better. Please visit the Kamado forum, at
www.kamado.com. You might want to ask
a question or two about cooking in ceramic.
Where the Meridian
will exceed even the Kamado is in the presence of additional ceramic mass. This
is the critical component for long-retained heat and extremely high
temperatures. Like “char rare” steaks? Or the moistest turkey you have ever had?
Just put one in before bed and it will be just as you like it in the morning.
All you need is our simple instructions, a stainless steel grill grid, and a
heat deflector.
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