PELLET STOVES
Index
INSTALLATION AND USE MANUAL
page 1
Index Technical service - Rights reserved MCZ S.p.A. –Reproduction prohibited
ENGLISH
INTRODUCTION ....................................................................................................................................3
1. WARNINGS AND GUARANTEE CONDITIONS.....................................................................................5
1.1. SAFETY WARNINGS........................................................................................................................5
1.2. OPERATING WARNINGS..................................................................................................................6
1.3. GUARANTEE CONDITIONS ..............................................................................................................7
1.3.1. Limitations...............................................................................................................................7
1.3.2. Exclusions................................................................................................................................7
2. THEORETICAL NOTIONS ON INSTALLATION....................................................................................9
2.1. PELLETS ........................................................................................................................................9
2.2. PRINCIPLES OF OPERATION..........................................................................................................10
2.2.1. Section plane of an MCZ pellet stove........................................................................................11
2.3. WORKING ENVIRONMENT.............................................................................................................12
2.4. PRECAUTIONS..............................................................................................................................13
2.5. CONNECTION TO THE EXTERNAL AIR INTAKE................................................................................13
2.6. CONNECTION OF THE SMOKE DISCHARGE PIPE.............................................................................14
2.7. CONNECTION TO THE FLUE PIPE...................................................................................................15
2.8. CONNECTION TO AN EXTERNAL FLUE WITH INSULATED OR DOUBLE-SKINNED PIPE........................15
2.9. CONNECTION TO FLUE PIPE OR SMOKE DUCT ...............................................................................15
2.10. OPERATING ABNORMALITIES DUE TO FLUE DRAUGHT PROBLEMS...............................................16
3. INSTALLATION AND ASSEMBLY......................................................................................................17
3.1. DRAWINGS AND TECHNICAL CHARACTERISTICS............................................................................17
3.1.1. SATURN ................................................................................................................................17
3.1.2. OMEGA..................................................................................................................................18
3.1.3. PLANET.................................................................................................................................19
3.1.4. MERCURY..............................................................................................................................20
3.1.5. TECHNICAL CHARACTERISTICS...............................................................................................21
3.2. PREPARATION AND PACKAGING....................................................................................................22
3.3. INSTALLATION OF THE CERAMIC CLADDING FOR OMEGA-PLANET ..................................................23
3.4. ELECTRICAL CONNECTION............................................................................................................23
4. OPERATION .....................................................................................................................................24
4.1. WARNINGS PRIOR TO FIRST LIGHTING.........................................................................................24
4.2. CHECK PRIOR TO FIRST LIGHTING................................................................................................25
4.3. LOADING PELLETS........................................................................................................................25
4.4. CONTROL PANEL and REMOTE CONTROL.......................................................................................25
4.4.1. REMOTE CONTROL and BATTERY REPLACEMENT........................................................................26
4.5. SETTINGS TO BE MADE PRIOR TO FIRST LIGHTING.......................................................................26
4.5.1. Setting current time................................................................................................................26
4.5.2. Scelta della lingua del display..................................................................................................27
4.6. SELECTION OF RECIPE .................................................................................................................27
4.6.1. HOW TO IDENTIFY THE RECIPE:.............................................................................................27
4.6.2. Procedure for recipe selection .................................................................................................29
4.6.3. Memorization of recipe on stove..............................................................................................29
4.7. FIRST LIGHTING ..........................................................................................................................29
4.7.1. Lighting from panel ................................................................................................................29
4.7.2. Lighting from remote control...................................................................................................30
4.7.3. Switching off from panel.........................................................................................................30
4.7.4. Switching off with the remote control.......................................................................................30
4.8. VIEWING THE FLAME....................................................................................................................31
4.8.1. The shape .............................................................................................................................31
4.8.2. The colour.............................................................................................................................31
4.8.3. Character ..............................................................................................................................31
4.9. OPERATING MODES......................................................................................................................32
4.9.1. Manual and automatic ............................................................................................................32
PELLET STOVES
Index
INSTALLATION AND USE MANUAL
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ENGLISH
4.9.2. Manual mode.........................................................................................................................32
4.9.2.1. Changing from manual to automatic mode.........................................................................33
4.9.3. Automatic mode.....................................................................................................................33
4.9.3.1. Internal digital thermostat (equipped in the stove) .............................................................33
4.9.3.2. External thermostat (optional) ..........................................................................................33
4.9.3.3. Changing from automatic to manual mode.........................................................................34
4.9.4. Automatic mode with ECO-STOP .............................................................................................34
4.9.4.1. ECO-STOP mode activation...............................................................................................35
4.9.5. Programmed mode.................................................................................................................35
4.9.5.1. Current date and clock.....................................................................................................35
4.9.5.2. Timer activation...............................................................................................................35
4.9.5.3. Programme.....................................................................................................................36
4.10. SAFETIES..................................................................................................................................38
4.10.1. Alarm indications ................................................................................................................39
4.10.2. Other alarm signals.............................................................................................................40
4.10.3. Lockout of the stove............................................................................................................40
4.11. SHUTTING DOWN THE STOVE ...................................................................................................41
5. MAINTENANCE AND CLEANING ......................................................................................................42
5.1. CLEANING TO BE DEALT WITH BY USER........................................................................................42
5.2. CLEANING TO BE DONE BY A SPECIALIZED TECHNICIAN ................................................................43
5.3. CHECK OF INTERNAL COMPONENTS..............................................................................................44
6. PROBLEMS / CAUSES / SOLUTIONS ...............................................................................................45
7. ELECTRICAL DIAGRAMS AND SPARE PARTS...................................................................................47
7.1. ELECTRICAL DIAGRAM SATURN - OMEGA - PLAMET........................................................................47
7.2. ELECTRICAL DIAGRAM MERCURY ..................................................................................................48
7.3. Maintenance and/or replacement of the electronic board..................................................................49
7.4. SPARE PARTS COMMON TO SATURN, OMEGA AND PLANET.............................................................50
7.5. SPARE PARTS MERCURY ...............................................................................................................56
PELLET STOVES Chapter 1
INSTALLATION AND USE MANUAL
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Introduction Technical service - Rights reserved MCZ S.p.A. –Reproduction prohibited
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INTRODUCTION
Dear Customer,
We would like to thank you for the preference which you have decided
to bestow on MCZ products, and particularly for choosing one of the
MCZ Pellet range.
We are convinced that as you use it, you will appreciate the quality of
the product, which is the fruit of careful planning and meticulous
testing. Our object is to combine technological complexity with
simplicity of use, and, above all, with safety.
In order to get the best performance from your stove and to
enjoy to the full the warmth and the sense of well-being which
the flame will diffuse through the home, we recommend that
you read this booklet carefully before lighting the stove for the
first time.
Once you have learnt the basics, you will be able manage to best
advantage the various levels of power and the potential for presetting,
and you will also pick up a few little hints about cleaning and setting.
While thanking you again, may we remind you that the stove MUST
NOT be used by children, and that they must always be kept at a safe
distance from it!
Revisions of this publication
In order to improve the product, the manufacturer reserves the right to
make modifications to this publication without any advance notice.
Even partial reproduction of this manual is prohibited without the
manufacturer's authorization.
Care of manual
• Take care of this manual and store it in a place that can be easily
and quickly reached
• If this manual is lost or destroyed, or if it is in any case in poor
condition, you may ask for another copy from your retailer or
directly form the manufacturer, specifying the product identification
data.
How to read the manual
• An essential item or one that requires special attention is shown in
"bold face print".
•
"Italics"
are used for messages provided by the stove or for
additional clarifications.
• NOTE: a "NOTE" provides the reader with additional information
on the topic.
PELLET STOVES Chapter 1
INSTALLATION AND USE MANUAL
page 4
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The following symbols stand for specific messages in
this booklet
ATTENTION:
This warning sign, used at various points in this booklet,
indicates that the message to which it refers should be
carefully read and understood, because failure to comply
with what these notices say can cause serious
damage to the stove and put the user's safety at risk.
INFORMATION:
This symbol is intended to highlight important information
for the proper functioning of the stove. Failure to comply
with what these notices say will compromise the use of the
stove and is likely to result in unsatisfactory operation.
REFER TO MANUAL:
This symbol tells the final reader to refer to this use and
installation manual because there are specific instructions
concerning the operation to be performed.
SEQUENCE OF OPERATIONS:
This indicates a series of buttons to push to access a menu
or to make adjustments.
VIEW MESSAGES:
This symbol tells the user to view the messages shown on
the control display.
PELLET STOVES Chapter 1
INSTALLATION AND USE MANUAL
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Warning and guarantee conditions Technical service – Rights reservedMCZ S.p.A. Reproduction prohibited
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1. WARNINGS AND GUARANTEE CONDITIONS
1.1. SAFETY WARNINGS
• Installation of the stove, making the electrical
connections, checking its operation, and
maintenance are all tasks which should be carried
out by qualified and authorised personnel.
• Install the stove in accordance with the
regulations in force in your local area, region and
country.
• For the correct use of the stove and of the electronic
apparatus connected to it, and to prevent accidents, the
instructions given in this booklet must always be
followed.
• In addition, adjustment and regulation must be carried
out by adults. Errors or incorrect settings can give rise
to hazardous conditions and/or bad running.
• Before beginning any operation, the user, or whoever is
preparing to work with the stove, must read and
understand the entire contents of this instruction
booklet.
• The stove must only be used for its intended purpose.
Any other use is to be considered improper and
therefore dangerous.
• Do not stand on the stove or use it as a support.
• Do not place laundry to dry on the stove. Laundry
hangers and the like must be placed at an appropriate
distance from the stove – there is a fire hazard.
• All responsibility for improper use is taken entirely by
the user and such use relieves MCZ of any civil or
criminal responsibility.
• Any kind of tampering or unauthorised substitution of
non-original spare parts can be hazardous for the safety
of the operator and relieves MCZ of any civil or criminal
responsibility.
• A number of the surfaces of the stove are hot (door,
handle, glass, smoke outlet pipes, etc.). It is therefore
necessary to avoid touching these parts without suitable
safety gear, for example insulated gloves or hand-
protection systems.
• Carefully explain this hazard to elderly people, disabled
people and particularly to all children, keeping them
away from the stove while it is running.
• The stove must not be operated with the door
open or the glass broken.
• Do not touch the stove with wet hands, in view of the
fact that it is an electrical appliance. Always disconnect
the supply cable before doing anything to the unit.
• Before carrying out any cleaning or maintenance
operation, make sure in advance that the stove is
disconnected from the mains electricity supply, by
turning off the main switch located on the back of the
stove, or by unplugging the supply cable.
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INSTALLATION AND USE MANUAL
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• The stove must be connected to an electrical system
which is equipped with an earth conductor, as laid down
in directives 73/23 EEC and 93/98 EEC.
• The system must be of adequate rated capacity for the
stated electrical power of the stove.
• Incorrect installation or faulty maintenance (not
conforming to the requirements set out in this booklet)
can cause harm to people, animals or property. In such
cases MCZ is absolved from any civil or criminal
responsibility.
1.2. OPERATING WARNINGS
• Shut the stove down in the event of a breakdown or
poor operation.
• Pellets must not be fed manually into the burner.
• The accumulation of unburned pellets in the burner
after repeated "ignition failures" must be removed
before lighting.
• Do not wash the inside of the stove with water.
• Do not wash the stove with water. Water may get into
the inside of the unit and damage the electrical
insulation, causing electrical shock.
• Do not expose the body to hot air for extended periods.
Do not overheat the room where you are and where
the stove is located. This may cause physical harm and
pose a health hazard.
• Do not expose plants and animals directly to the flow of
hot air. This may be harmful to plants and animals.
• Do not put anything in the hopper other than wood
pellets.
• Install the stove in a location which is suitable for
firefighting, and equipped with all services such as air
and electricity supply and provision for discharging
combustion gases.
• If the stove and the ceramic cladding are in storage, it
should be in a place that is free of humidity, and they
should not be exposed to temperature extremes.
• It is inadvisable to base the stove directly on the floor,
and if the floor is made of flammable material, it must
be suitably insulated.
• Do not light the stove with flammable materials if the
ignition system breaks down.
INFORMATION:
• In case of any problems, get in touch with your dealer,
or a qualified engineer authorised by MCZ, and if a
repair is necessary, insist on the use of original spare
parts.
• Only fuel recommended by MCZ must be used (for Italy
only pellets with a diameter of 6mm, for other European
countries with a diameter of 6-8mm) and provided
exclusively by the automatic supply system.
PELLET STOVES Chapter 1
INSTALLATION AND USE MANUAL
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Warning and guarantee conditions Technical service – Rights reservedMCZ S.p.A. Reproduction prohibited
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• Periodically check and clean the smoke outlet ducts
(connection to the flue pipe).
• The accumulation of unburned pellets in the burner after
repeated "ignition failures" must be removed before
lighting.
• The pellet stove is not a cooking appliance.
• Always keep the cover of the fuel hopper closed.
• Keep this instruction manual carefully because it must
stay with the stove throughout its working life. If the
stove is sold or transferred to another user, always
make sure that the booklet goes with the product.
• If it gets lost, ask MCZ or your authorised dealer for
another copy.
1.3. GUARANTEE CONDITIONS
MCZ guarantees the stove, excluding the components
listed below which are subject to normal wear and
tear, for a period of two years from the date of purchase,
as proved by a supporting document which gives the name
of the vendor and the date on which the sale took place.
The guarantee is conditional on the guarantee certificate
being filled in and returned within 8 days, and requires that
the product be installed and tested by a specialised installer,
according to the detailed instructions given in the instruction
booklet supplied with the product.
The term 'guarantee' is to be understood to denote the free-
of-charge replacement or repair of parts recognised to
have been defective at the start by reason of
manufacturing defects.
1.3.1. Limitations
The above guarantee does not cover components relating to electrical
and electronic parts, or fans, on which the guarantee period is 1 year
from the purchase of the product, documented as specified above. The
guarantee also does not cover parts subject to normal wear and tear:
gaskets, glass, and all the removable parts of the firebox.
The replacement parts will be guaranteed for the remainder of the
guarantee period starting from the date of purchase of the product.
1.3.2. Exclusions
Variations in colour in the painted or ceramic parts, and crackling of the
glaze on the ceramics, do not constitute grounds for a claim under the
guarantee, as they are natural characteristics of the material and of the
use of the product.
The guarantee does not cover any parts which may be found to be
faulty as a result of negligence or carelessness in use, or of incorrect
maintenance, or of installation not complying with MCZ's specification
(see the relevant chapters in this user manual).
MCZ refuses to accept any responsibility for any damage which may be
caused, directly or indirectly, by persons, animals or things in
consequence of the failure to observe all the prescriptions laid down in
PELLET STOVES Chapter 1
INSTALLATION AND USE MANUAL
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Warning and guarantee conditions Technical service – Rights reservedMCZ S.p.A. Reproduction prohibited
ENGLISH
the instruction booklet, especially those concerning warnings on the
subject of installation, use and maintenance of the appliance.
In case of an unsatisfactory product, contact your retailer and/or the
local importer.
Damage caused by transport and/or handling is excluded from the
guarantee.
For installation and use of the product, reference must be made
exclusively to the booklet supplied.
The guarantee will be invalidated in the event of damage caused by
tampering with the appliance, atmospheric agents, natural disasters,
electrical discharges, fire, defects in the electrical system, and lack of,
or incorrect, maintenance in terms of the manufacturer's instructions.
REQUESTS FOR SERVICE:
Any request for service must be addressed to the
retailer, who will forward the claim to MCZ's
technical assistance service.
MCZ DECLARES THAT THE STOVE WHICH YOU HAVE
PURCHASED COMPLIES WITH EEC DIRECTIVE
89/336 and 72/23 and SUCCESSIVE AMENDMENTS
MCZ refuses to accept any responsibility in the event
that the stove or any other accessory have been
improperly used or modified without authorisation.
For all replacement of parts, only original MCZ spare
parts must be used.
PELLET STOVES Chapter 2
INSTALLATION AND USE MANUAL
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Theoretical notes for installation Technical service – Rights reserved MCZ S.p.A. – Reproduction prohibited
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2. THEORETICAL NOTIONS ON INSTALLATION
2.1. PELLETS
Wood pellets are manufactured by hot-extruding compressed sawdust
which is produced during the working of natural dried unpainted wood.
The compactness of the material comes from the lignin which is
contained in the wood itself, and allows the production of pellets
without the use of glues or binders.
The market offers different types of pellet with characteristics which
vary depending on what mixture of woods is used. The diameter goes
from 6 mm to 8 mm and the standard length is between 5 mm and 30
mm. A good quality pellet has a density between 550 kg/m
3
and 700
kg/m
3
with a water content that is between 5% and 8% by weight.
In order to guarantee the stated hourly consumption rates and
to optimise combustion, for pellet stoves MCZ has prepared a
patented method which makes it possible to identify and
classify any kind of pellet with a diameter of 6 mm and 8 mm
based on its specific weight and piece size.
By using the special PelletBox® and following the procedure set out in
the paragraph on lighting the stove, the user can determine the correct
settings for configuring the stove.
Along with being an ecological fuel which makes the best use of wood
residues thus producing cleaner combustion than that produced with
fossil fuels, pellets also have technical advantages. Whereas good wood
has a calorific power of 4.4 Kw/kg (with 15% humidity, so after about
18 months of seasoning), that of pellets is 5.3 Kw/kg.
To guarantee good combustion, the pellets must be stored in a clean,
dry place. The pellets are usually supplied in 15 kg. sacks, therefore
storage is very handy.
Good quality pellets ensure good combustion, thus lowering the
emission of harmful agents into the atmosphere.
The poorer the quality of the fuel, the more
frequently will intervention be necessary for cleaning
the internal parts, such as the grate and the
combustion chamber.
The pellets must be produced from pure wood which has not been
treated chemically.
The standards DIN 51731 and ONORM M 7135 certify a high-quality
pellet with the following characteristics:
Calorific power: 5.3 kW/kg
Density: 700 kg/m
3
Moisture content: 8% max by weight
Ash percentage: 1% max by weight
Diameter: 6-6.5mm
Length: 30 mm max
Pellet fuel
PelletBox®
15 Kg fuel sack
PELLET STOVES Chapter 2
INSTALLATION AND USE MANUAL
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Theoretical notes for installation Technical service – Rights reserved MCZ S.p.A. – Reproduction prohibited
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Content: 100% untreated wood, with no added bonding
substances (bark percentage 5% max)
Packaging: in bags made from ecologically compatible or
biodegradable material
MCZ emphatically recommends using certified fuel
in its stoves.
The use of fuel of inferior quality or not conforming
to the specification given above compromises the
running of your stove and can therefore lead to the
termination of the guarantee and of the
manufacturer's responsibility for the product.
MCZ pellet stoves operate exclusively with pellets
with a diameter of 6 mm (only for Italy) and 6-8mm
(European countries) with a length between 5mm
and 30mm.
2.2. PRINCIPLES OF OPERATION
The pellets are picked up from the hopper on board the stove and
transported by a feed screw. They are then introduced into the
combustion chamber and fall directly into the stainless steel grate.
The quantity of pellets introduced into the grate and the corresponding
air of combustion are predetermined, programmed and controlled by an
electronic board.
In the lighting phase, the electronic board activates the smoke
extraction fan and the ceramic sparkplug, which heats up and causes
the fuel to ignite at a temperature of about 200°C. After about 20
minutes, the lighting phase is complete, and the control unit puts the
stove into operating mode.
In this phase, on the basis of the instructions which we provide via the
infrared remote (5 power levels), the electronic board regulates the
exact relationship between quantity of fuel, combustion air and
convection air, and provides continuous monitoring of all the
components connected to it, indicating if necessary the presence of any
operating problems and stopping the process.
- SEE SECTION DRAWING ON NEXT PAGE -
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INSTALLATION AND USE MANUAL
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Theoretical notes for installation Technical service – Rights reserved MCZ S.p.A. – Reproduction prohibited
ENGLISH
2.2.1. Section plane of an MCZ pellet stove
-
Pellet loading door
Pellet compartment sensor
Convection hot air outlet
Ventilated hot air outlet
Degflector grill
Glass cleaning air
Firebox in Alutec®
Door with glass (750° C)
Stainless steel grate
Secondary combustion air
Primary combustion air
Central ash drawer
Side ash drawer
Smoke aspirator
Door handle
Ceramic cladding
Control panel
Rear closing panel
Pellet hopper
Chamber (heat exchanger)
Pellet feeding
Pellet feed screw
Pellet duct
Electronic control board
Combustion air intake Ø 50
Smoke sensor
Smoke discharge Ø 80
Hot air fan
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INSTALLATION AND USE MANUAL
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ENGLISH
2.3. WORKING ENVIRONMENT
For proper functioning and a good temperature distribution, the stove
should be positioned in a location where it is able to take in the air
necessary for combustion of the pellets (about 40 m
3
/h must be
available) ,as laid down in the standard governing the installation (UNI
- CIG 7129, 7131 and in accordance with national standards in effect).
The volume of the room must not be less than 30 m
3
.
The air must come in through permanent openings made in walls (in
proximity to the stove) which give onto the outside, with a minimum
cross-section area of 100 cm
2
.
These openings must be made in such a way that it is not possible for
them to be obstructed in any way.
Alternatively, the air may be drawn from rooms next door to the room
which needs ventilation, provided that these rooms have an air intake
from outdoors and are not used as bedrooms or bathrooms and
provided there is no fire risk such as there is for example in garages,
woodsheds, and storerooms.
It is not permissible to install the stove in bedrooms,
bathrooms or showers, and in a room where another
heating appliance is installed (fireplace, stove etc.)
which does not have its own independent air intake.
Locating the stove in a room with an explosive
atmosphere is prohibited.
The floor of the room where the stove is to be
installed must be strong enough to take its weight.
If the walls are not flammable, position the stove with a clearance to
the rear of at least 10 cm
In the case of walls made of flammable material, maintain a minimum
clearance to the rear of 20 cm, a clearance to the sides of 50 cm, and a
clearance to the front of 150 cm If the room contains objects which
are believed to be particularly delicate, such as hangings, sofas and
other furniture, their distance from the stove should be considerably
increased.
If there is wood flooring, place a floor protection
and adhere to national standards currently in effect.
Example of installation with Saturn stove
150 cm
20 cm
20 cm
Example of installation with Saturn stove
5
0
c
m
Floor protection
Min. 100 cm
2
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INSTALLATION AND USE MANUAL
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Theoretical notes for installation Technical service – Rights reserved MCZ S.p.A. – Reproduction prohibited
ENGLISH
2.4. PRECAUTIONS
IMPORTANT !
Installation and assembly of the stove must be
carried out by a qualified engineer.
The stove must be installed in a suitable position to allow the normal
operations of opening and ordinary maintenance.
The site must be:
• capable of providing the environmental conditions for operation
• provided with 230V 50 Hz (EN73-23) electricity supply
• capable of taking an adequate system for smoke discharge
• provided with external ventilation
• provided with an earth connection complaint with CE standards
The stove must be connected to a flue pipe or an internal or
external vertical conduit conforming to the current standards.
The stove must be positioned in such a way that the electrical
plug is accessible.
IMPORTANT !
The stove must be connected to a flue pipe or a
vertical conduit which can discharge the fumes at the
highest point of the building.
The fumes are however derived from the combustion
of wood products, and if they come into contact with
or close to walls, they can make dirty marks.
Also take care because the fumes are very hot but
almost invisible, and can cause burns on contact.
The holes for the passage of the smoke pipe and for
the intake of air from outside should be made before
positioning the stove unit.
2.5. CONNECTION TO THE EXTERNAL AIR INTAKE
It is essential that at least as much air must be able to flow into the
room where the stove is installed as is required for proper combustion
in the appliance and for the ventilation of the room.
To do this, make a hole in the external wall near the stove with a
clearance section of at least 100 cm². (12 cm diameter hole or square
10x10cm), protected by a grille on the outside.
The air intake must:
• communicate directly with the room where the stove is installed
• be protected by a grille, metal mesh or suitable guard, as long as
this does not reduce the area below the minimum.
• be positioned in such a way as to be impossible to obstruct
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INSTALLATION AND USE MANUAL
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It is not compulsory to connect the air intake directly
with the stove (so that it draws air directly from
outside), but it is essential at all events to ensure an
airflow of 50 cubic metres per hour by the use of a
hole of the dimensions given.
See standard UNI 10683 REV.
2.6. CONNECTION OF THE SMOKE DISCHARGE PIPE
When making the hole for the passage of the smoke discharge pipe, it
is necessary to take into account the possible presence of flammable
materials. If the hole will be going through a wall made of wood or any
other material which is sensitive to heat, the INSTALLER MUST first
of all use the special wall union (diam.13cm minimum) and properly
insulate the pipe of the stove that passes through it, using adequate
insulation materials (thickness1.3—5 cm with minimum thermal
conductivity of 0.07 W/m°K).
The same is true if the stove pipe must run through vertical or
horizontal stretches passing in proximity (min.20cm) to the heat-
sensitive wall
As an alternative we recommend the use of insulated pipe, which can
also be used on the outside to avoid condensation.
The combustion chamber works in low pressure. The smoke duct for
the discharge of fumes will also be under low pressure when connected
to an efficient flue pipe as directed.
Pipes and unions with suitable gaskets must always
be used, to guarantee a hermetic seal.
All sections of the smoke duct must be accessible for
inspection and removable to enable periodic internal
cleaning. Tee connectors with inspection caps should be
used.
Position the stove in consideration of all the instructions and
considerations above.
IMPORTANT !
All 90 degree changes of direction in the flue pipe
must be fitted with suitable tee connectors to allow
the possibility of inspection (see the pellet stove
accessory list).
It is absolutely unacceptable to fit a grille on the end
of the discharge pipe, because it could lead to poor
running of the stove.
FOR FLUE PIPE CONNECTION DO NOT USE MORE
THAN 2-3 M. OF HORIZONTAL PIPES AND DO NOT
USE MORE THAN THREE 90° BENDS
Example of installation with Saturn stove
View of Saturn stove
air
Combustion
Smoke
outle
t
3-5 %
2-3 m MAX.
Inspection
Inspection
Height greater than 4 m
Minimum 1,5
–
2m
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INSTALLATION AND USE MANUAL
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2.7. CONNECTION TO THE FLUE PIPE
The flue pipe must have internal dimensions not greater than 20x20
cm or a diameter of 20 cm; in the case of larger dimensions or poor
operation of the flue pipe (e.g. cracks, poor insulation, etc.) it is
advisable to insert a stainless steel pipe of a suitable diameter all the
way up to the top. Fig.5
Check with suitable instruments that there is a minimum draught of 10
Pa.
At the bottom of the flue pipe, provide an inspection cap to allow
periodic checking and cleaning, which must be done annually.
Make a gas-tight connection to the flue pipe, using pipes and
connectors as recommended by us.
It is compulsory to check that an anti-wind chimney has been installed,
in accordance with current standards.
This type of connection ensures the evacuation of the
fumes even in the event of a temporary power cut.
2.8. CONNECTION TO AN EXTERNAL FLUE WITH
INSULATED OR DOUBLE-SKINNED PIPE
The outside flue must have minimum internal dimensions of 10X10 or a
diameter of 10 cm and maximums 20x20 cm or a diameter of 20 cm;
Check with suitable instruments that there is a minimum draught of 10
Pa. Fig.6
The only type of pipe which is permissible is insulated (double-walled)
stainless steel, smooth on the inside, fixed to the wall. Flexible stainless
steel pipe must not be used.
At the bottom of the flue pipe, provide an inspection cap to allow
periodic checking and cleaning, which must be done annually.
Make a gas-tight connection to the flue pipe, using pipes and
connectors as recommended by us.
It is compulsory to check that an anti-wind chimney has been installed,
in accordance with current standards.
This type of connection ensures the evacuation of the
fumes even in the event of a temporary power cut.
2.9. CONNECTION TO FLUE PIPE OR SMOKE DUCT
For proper functioning, the connecting pipe between the stove and the
chimney or flue duct must have a slope of not less than 3%. The length
of the horizontal stretch must not exceed 2/3 metres, and the vertical
distance between one tee connector and another (change of direction)
must not be less than 1.5m.
Check with suitable instruments that there is a minimum draught of 10
Pa. Fig.7
At the bottom of the flue pipe, provide an inspection cap to allow
periodic checking and cleaning, which must be done annually.
Make a gas-tight connection to the flue pipe, using pipes and
connectors as recommended by us.
Fig. 5
Fig. 6
Fig. 7
Flue pipe
A
nti-wind
chimney
Inspection
0,5 m
Insulted
external
duct
Inspection
0,5 m
3-5 %
2 - 3 m MAX.
M
i
n
i
m
o
1
,
5
-
2
m
t
.
Inspection
0,5 m
Flue pipe
Minimum 1,5 – 2 m
PELLET STOVES Chapter 2
INSTALLATION AND USE MANUAL
page 16
Theoretical notes for installation Technical service – Rights reserved MCZ S.p.A. – Reproduction prohibited
ENGLISH
It is compulsory to check that an anti-wind chimney has been installed,
in accordance with current standards.
This type of connection ensures the evacuation of the
fumes even in the event of a temporary power cut.
2.10. OPERATING ABNORMALITIES DUE TO FLUE
DRAUGHT PROBLEMS
Of all the meteorological and geographical factors which affect the
operation of a flue pipe (rain, fog, snow, altitude a.s.l., exposure to
sun, exposure to cardinal points, etc.) the wind is undoubtedly the most
important one. In fact, apart form the thermal difference caused by
the temperature difference inside and outside the chimney, there is
another kind of pressure difference: the dynamic pressure caused by
the wind. Updrafts always increase the depression and hence draft.
Horizontal wind increases draught if the chimney has been properly
installed. A downdraft always decreases the depression, at times
inverting it.
Besides the direction and force of the wind, the position of the flue and
the cowl with respect to the roof of the building and the surrounding
landscape is important.
The wind also indirectly affects the operation of the fireplace, creating
high and low pressure areas not only outside but also inside dwellings.
In rooms directly exposed to the wind (2) a high pressure area may be
created which may favour the draught of stoves and fireplaces, but
which may be contrasted by high external pressure if the chimney is
exposed to the wind (1). On the contrary, in rooms opposite to the
direction of the wind (3) there may be a dynamic low pressure area
which competes with the natural thermal depression in the fireplace,
which may however at times be compensated by placing the smoke
duct on the side opposite from the wind (4)
IMPORTANT !
The operation of the pellet stove is noticeabl
y
sensitive to the conformation and position of the flue
which is adopted.
Hazardous conditions can only be overcome by
suitable setting-up of the stove carried out by
qualified MCZ personnel.
Least favorable position
Most favorable position
WIND
Down draft
Pressure area
Depression area
45° down draft at 8m/sec. High
pressare of 17 Pa
Horizontal wind 8m/sec.
Depression of 30 Pa
1
2 3
4
1-2 = High pressure area
3-4 = Low pressure area
WIND
PELLET STOVE Chapter 3
INSTALLATION AND USE MANUAL
page 17
Installation and assembly Technical service – Rights reserved MCZ S.p.A. – Reproduction prohibited
ENGLISH
3. INSTALLATION AND ASSEMBLY
3.1. DRAWINGS AND TECHNICAL CHARACTERISTICS
3.1.1. SATURN
PELLET STOVE Chapter 3
INSTALLATION AND USE MANUAL
page 18
Installation and assembly Technical service – Rights reserved MCZ S.p.A. – Reproduction prohibited
ENGLISH
3.1.2. OMEGA
PELLET STOVE Chapter 3
INSTALLATION AND USE MANUAL
page 19
Installation and assembly Technical service – Rights reserved MCZ S.p.A. – Reproduction prohibited
ENGLISH
3.1.3. PLANET
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