MCZ Flat Technical specifications

USE AND INSTALLATION MANUAL EN
Translation of original instructions
PELLET STOVE
FLAT
COMFORT AIR MADE OF CERAMICS
FLAIR
COMFORT AIR MADE OF STEATITE NuTech Renewables Ltd
unit 11, warrenpoint Enterprise centre,
Newry Road, Warrenpoint
Co.Down,. BT34 3LA
Tel; + 44 28 417 53031
Email: [email protected]
www.nutechrenewables,.com

II
TABLE OF CONTENTS
TABLE OF CONTENTS .................................................................................................. II
INTRODUCTION ..........................................................................................................1
1WARNINGS AND WARRANTY CONDITIONS .................................................................2
2FUEL.......................................................................................................................6
3INSTALLATION.........................................................................................................7
4FLUE.......................................................................................................................8
5DRAWINGS AND TECHNICAL FEATURES....................................................................15
6INSTALLATION AND ASSEMBLY ...............................................................................18
7REMOTE CONTROL MAX..........................................................................................36
8EMERGENCY PANEL................................................................................................41
9SAFETY DEVICES AND ALARMS................................................................................44
10MAINTENANCE AND CLEANING..............................................................................48
11PROBLEMS/CAUSES/SOLUTIONS ...........................................................................52
12WIRING DIAGRAMS..............................................................................................55

1
INTRODUCTION
Technical Dept. - All rights reserved - Reproduction is prohibited
Dear Customer,
our products are designed and manufactured in compliance with European reference Standards for construction products (EN13240
wood-burning stoves, EN14785 pellet-burning appliances, EN13229 replaces/wood-burning inserts, EN 12815 wood-burning cookers),
with high quality materials and extensive experience in the transformation processes.The products also meet the essential requirements
of Directive 2006/95/EC (Low Voltage) and Directive 2004/108/EC (Electromagnetic Compatibility).
To get the best performance, we suggest you read the instructions in this manual carefully.
This installation and use manual forms an integral part of the product: ensure that the manual is always supplied with the appliance,
even if it changes owner. If the manual is lost, you can request another copy from the local technical service or download it directly from
the company website.
All local regulations, including those regarding national and European regulations, must be observed when the appliance is installed.
In Italy, for the installation of systems with biomass below 35KW, refer to ministerial decree D.M. 37/08, and the qualied installation
technician with the appropriate requisites must issue a certicate of compliance for the system installed. (By system one means
Stove+Chimney+Air inlet).
REVISIONS TO THE PUBLICATION
The content of this manual is strictly technical and the property of MCZ Group Spa.
No part of this manual may be translated into other languages and/or adapted and/or reproduced, even in part, in other mechanical or
electronic forms, photocopies, recordings or other, without the prior written authorisation from MCZ Group Spa.
The company reserves the right to make changes to the product at any time without prior notice. The proprietary company reserves its
rights according to the law.
CARE OF THE MANUAL AND HOW TO CONSULT IT
• Take care of this manual and keep it in an easily accessible place.
• Should the manual be misplaced or ruined, request a copy from your retailer or directly from the authorised Technical Assistance
Department. It can be downloaded from the company website.
• The“text in bold”must be read with particular care.
• The“text in italics”draws attention to other sections in this manual or clarications.
• “NOTE”provides the reader with additional information.
SYMBOLS USED IN THE MANUAL
ATTENTION:
read the relative message carefully as failure to observe the information provided could result in serious
damage to the product and put the persons who use it at risk.
INFORMATION:
failure to comply with these provisions will compromise the use of the product.
OPERATING SEQUENCES:
sequence of buttons to be pressed to access the menus or change settings.
MANUAL
carefully read this manual or the relative instructions.

2
1-WARNINGS AND WARRANTY CONDITIONS
SAFETY PRECAUTIONS
• Installation, electrical connection, function test and maintenance must only be carried out by authorised and
qualied personnel.
• Install the product in accordance with all local and national legislation and regulations in force in the region or state.
• Only use the fuel recommended by the manufacturer. The product must not be used as an incinerator. It is strictly forbidden to use
liquid fuel.
• Do not put any fuel other than wood pellets in the hopper.
• The instructions provided in this manual must always be complied with to ensure the product and any electronic appliances
connected to it are used correctly and accidents are prevented.
• The user, or whoever is operating the product, must read and fully understand the contents of this installation guide before
performing any operation. Errors or incorrect settings can cause hazardous conditions and/or poor operation.
• Do not climb on or lean on the product.
• Do not put linen on the product to dry. Any drying racks or the like must be kept at a safe distance from the product. Fire hazard.
• All liability for improper use of the product is entirely borne by the user and relieves the Manufacturer from any civil and criminal liability.
• Any type of tampering or unauthorised replacement with non-original spare parts could be hazardous for the operator’s safety and
relieves the company from any civil and criminal liability.
• Many of the surfaces of the product get very hot (door, handle, glass, smoke outlet pipes, etc.). Avoid coming into contact with
these parts, without adequate protective clothing or suitable implements, such as gloves with thermal protection or
“cold handle” operating systems.
• It is forbidden to operate the product with the door open or the glass broken.
• The product must be powered by an electrical system that is equipped with an eective earthing device.
• Switch the product o in the event of a fault or malfunction.
• Accumulated unburned pellets in the burner after each “failed start-up” must be removed before lighting again. Check that the
burner is clean and positioned properly before lighting again.
• Do not wash the product with water. Water could get inside the unit and damage the electrical insulation and cause electric shocks.
• Do not stand for a long time in front of the product in operation. Do not overheat the room you are in and where the product is
installed. This could cause injuries and health problems.
• Install the product in a location that does not feature a re hazard and is equipped with power and air supplies and smoke extractors.
• In the event of re in the chimney, turn o the device, disconnect it from the mains electricity and do not open the hatch. Then
contact the competent authorities.
• The product and the cladding must be stored in a dry place and must not be exposed to weathering.
• It is recommended not to remove the feet that support the product in order to guarantee adequate insulation, especially if the
ooring is made of ammable materials.
• In the event of a malfunction of the ignition system, do not force it to light by using ammable materials.
• Special maintenance must only be performed by authorised and qualied personnel.
• Assess the static conditions of the surface on which the weight of the product will rest and provide suitable insulation if it is made of
ammable material (e.g. wood, tted carpet or plastic).

3
1-WARNINGS AND WARRANTY CONDITIONS
Technical Dept. - All rights reserved - Reproduction is prohibited
INFORMATION:
Please contact the retailer or qualied personnel authorised by the company to resolve a problem.
• You must only use the fuel specied by the manufacturer.
• When the product is switched on for the rst time it is normal for it to emit smoke due to the paint overheating for the rst time.
Therefore make sure the room in which it is installed is well ventilated.
• Check and clean the smoke extraction pipes regularly (connection to the chimney).
• The product is not a cooking appliance.
• Always keep the cover of the fuel hopper closed.
• Store this installation and use manual with care as it must accompany the product for the duration of its useful life. If the product is
sold or transferred to another user, ensure the manual is also handed over.
INTENDED USE
The product only works with wood pellets and must be installed indoors.
WARRANTY CONDITIONS
The company guarantees the product, with the exception of elements subject to normal wear listed below, for a period of 2 (two)
years from the date of purchase attested by:
• a document to serve as proof of purchase (invoice and/or receipt) that shows the name of the vendor and the date on which the
purchase was made;
• forwarding of the completed certicate of guarantee within 8 days of purchase.
Furthermore, the product must be installed and started by specialised personnel who must, where provided, issue a declaration of
conformity of the plant and of the proper functioning of the product, for the warranty to be valid and eective.
We recommend testing the product before completion with the relative nishes (claddings, painting of walls, etc.).
Installations that do not meet the current standards, improper use and lack of maintenance as expected by the manufacturer, void the
product warranty.
The guarantee is valid on the condition that the instructions and warnings contained in the use and maintenance manual are observed,
and therefore the product is used correctly.
The replacement of the entire appliance or the repair of one of its components does not extend the warranty period, and the original
expiry date remains unchanged.
The warranty covers the replacement or free repair of parts recognised as faulty at source due to manufacturing defects. To
benet from the warranty, in the event of a fault, the customer must have the warranty certicate and show it with the proof of purchase
document to theTechnical Assistance Oce.

4
1-WARNINGS AND WARRANTY CONDITIONS
EXCLUSIONS
The guarantee does not cover malfunctions and/or damage to the appliance that arise due to the following causes:
• Damage caused during transportation and/or handling
• all parts that develop faults due to negligence or improper use, incorrect maintenance, installation that does not comply with the
manufacturer’s instructions (always refer to the installation and use manual provided with the appliance)
• incorrect sizing with regard to the use or faults in the installation or failure to adopt the necessary devices to guarantee proper
execution
• improper overheating of the equipment, use of fuels not conforming to the types and quantities indicated in the instructions provided
• further damage caused by incorrect user interventions in an attempt to x the initial fault
• worsening of the damage due to the continued use of the equipment by the user, once the defect has been noticed
• in presence of a boiler, any corrosion, incrustations or breakages caused by water ow, condensation, hardness or acidity of the water,
improperly performed descaling treatments, lack of water, mud or limescale deposits
• ineciency of chimneys, ues or parts of the plant aecting the equipment
• damage caused by tampering with the appliance, atmospheric agents, natural disasters, vandalism, electric shocks, res, faults in
the electric and/or hydraulic system.
The following are also not covered by the warranty:
• parts subject to normal wear such as gaskets, glass, claddings and cast iron grids, painted, chrome-plated or gilded parts, handles
and electric cables, bulbs, indicator lights, knobs, all parts which can be removed from the hearth.
• Variations in colour of the painted or ceramic/serpentine parts and craquelure ceramics as they are natural characteristics of the
material and product use.
• masonry work
• plant parts (if present) not supplied by the manufacturer
Any technical interventions on the product to eliminate the above-said defects and consequent damages must be agreed upon with
the Technical Assistance Centre, who reserves the right to accept the relative appointment or not. However, said interventions will not
be carried out under warranty but as technical assistance to be granted at part of any eventual and specic agreed conditions and in
accordance with the fee in force for the work to be carried out.
The user will also be charged for any costs incurred to remedy the incorrect technical interventions, tampering or damage to the appliance,
not attributable to original faults.
With the exception of the legal or regulatory limits, the warranty does not cover the reduction of atmospheric and acoustic pollution.
The company declines all liability for any damage which may be caused, directly or indirectly, to persons, animals or objects as
a consequence of non compliance with any provision specied in the manual, especially warnings regarding installation, use
and maintenance of the appliance.

5
1-WARNINGS AND WARRANTY CONDITIONS
Technical Dept. - All rights reserved - Reproduction is prohibited
SPARE PARTS
In the event of a malfunction, consult the retailer who will forward the call to theTechnical Assistance Service.
Only use original spare parts. The retailer or service centre can provide all necessary information regarding spare parts.
We do not recommend waiting for the parts to get worn out before having them replaced. It is important to perform regular maintenance.
The company declines all liability if the product and any other accessory is used improperly or modied without
authorisation.
All parts must be replaced with original spare parts.
WARNINGS FORTHE CORRECT DISPOSAL OF THE PRODUCT.
The owner is the sole party responsible for demolishing and disposing of the product. This must be performed in compliance with laws
related to safety and environmental protection in force in his/her country.
At the end of its working life, the product must not be disposed of as urban waste.
It must be taken to a special dierentiated waste collection centre set up by the local authorities or to a retailer that provides this service.
Separating and recycling prevents potential negative eects on the environment and health (often caused by inappropriately disposing of
product parts). It also allows materials to be recovered in order to obtain signicant savings in energy and resources.

6
2-FUEL
The instructions in this chapter refer explicitly to the Italian installation regulation UNI 10683. In any case, always observe the regulations
in force in the country of installation.
PELLETS
Wood pellets are manufactured by hot-extruding compressed sawdust which is produced during the working of natural dried wood. The
compactness of the material is guaranteed by the lignin contained in the wood itself and allows pellets to be produced without glue or
binders.
The market oers dierent types of pellets with characteristics that vary according to the wood mixtures used. The most common
diameter on the market is 6 mm (although 8 mm diameter is available too) with a length, on average, of between 5 and 30 mm. A good
quality pellet has a density of between 600 and 750 or more kg/metres cubed and a water content that accounts for 5 to 8% of its weight.
Pellets have technical advantages besides being an ecological fuel, as the wood residue is used completely, thereby achieving cleaner
combustion than that of fossil fuels.
While good-quality wood has a caloric value of 4.4 kW/kg (15% moisture, after about 18 months of seasoning), whereas that of pellets
is around 4.9 kW/kg. To ensure good combustion, the pellets must be stored in a dry place and protected from dirt. Pellets are usually
supplied in 15 kg bags, therefore, storing them is very convenient.
Good quality pellets guarantee good combustion, thereby decreasing harmful emissions into the atmosphere.
The poorer the quality of the fuel, the more often the internal parts of the brazier and combustion chamber must
be cleaned.
The main quality certications for pellets currently available on the European market guarantee that the fuel complies with class A1/A2
according to EN14961-2. These certications include, for example, ENPlus, DINplus, Ö-Norm M7135, and in particular, guarantee the
following characteristics:
• caloric value: 4.6 ÷ 5.3 kWh/kg.
• Water content: ≤ 10% of the weight.
• Percentage of ash: max 1.5% of the weight.
• Diameter: 6±1/8±1 mm.
• Length: ≤ 40 mm.
• Content: 100% untreated wood without the addition of binding substances (max 5% bark).
• Packaging: in sacks made from ecologically compatible or biologically decomposing material.
The company strongly recommends using certied fuel for its products (ENplus, DINplus, Ö-Norm M7135).
Poor quality pellets or others that do not comply with the characteristics specied previously may compromise the
operation of your product and can therefore make the guarantee and product liability invalid.
15 Kg BAGS OF FUEL

7
3-INSTALLATION
Technical Dept. - All rights reserved - Reproduction is prohibited
FOREWORD
The installation position must be chosen according to the room, to the smoke extraction system, to the chimney ue. Check with local
authorities whether there are any restrictive regulations in force regarding the combustion air inlet, the smoke outlet system, the
ue or the chimney cap. The manufacturer declines all responsibility in the event of installations that do not comply with the laws in
force, incorrect room air exchange, electrical connection non-compliant with the standards and inappropriate use of the appliance. The
installation must be carried out by a qualied technician, who must issue a declaration of conformity of the system to the purchaser and
will assume full responsibility for nal installation and consequent good operation of the product.
In particular one must ensure that:
• there is a suitable combustion air inlet and smoke outlet in compliance with the type of product installed
• other stoves or devices installed do not cause depression in the room where the product is installed (for sealed appliances only, a
maximum of 15 Pa of depression in the room is allowed)
• when the product is switched on there is no reux of smoke in the room
• fumes extraction takes place in total safety (sizing, smoke seal, distances from ammable materials..).
We especially recommend to check the data tags of the ue for the safety distances that must be observed in presence
of combustible materials and the type of insulating material to be used. These indications must be followed strictly to
prevent serious harm to people and the integrity of the home. The installation of the appliance must ensure easy access to
clean the appliance itself, the smoke outlet pipes and the ue. It is forbidden to install the stove in rooms with a re hazard.
Installation in studio ats, bedrooms and bathrooms is only allowed with sealed or closed appliances equipped with
suitable combustion air ducting directly outside. Always maintain adequate distance and protection in order to prevent
the product from coming into contact with water.
In the event there are several appliances installed, the external air inlet must be sized accordingly.
MINIMUM DISTANCES
It is recommended to install the stove detached from any walls and/or furniture, with a minimum clearance to allow eective aeration
of the appliance and a good distribution of heat in the room. Observe the distances from ammable or heat-sensitive objects (sofas,
furniture, wood panelling, etc..) as specied.The front distance from ammable materials must be at least 80 cm.
If particularly delicate objects are present, such as furniture, curtains or sofas, increase the stove clearance accordingly.
If the oor is made of wood, it is recommended to t a oor protection sheet in compliance with the Standards in
force in the country of installation.
FLAT - FLAIR Non-ammable walls Flammable walls
Comfort Air A = 2 cm
B = 15 cm
A = 2 cm
B = 20 cm
If the oor is made of combustible material, it is recommended to use protection made of non-combustible material (steel, glass...) that
also protects the front from falling combusted material during cleaning operations.
The appliance must be installed on a oor with adequate load capacity.
If the existing construction does not meet this requirement, one must take appropriate measures (for example a load distribution plate).

min.3,5 metri
AT
(A)
AP
(B)
8
4-FLUE
FOREWORD
The Chimney Flue chapter has been drawn up with reference to the provisions of European Standards (EN13384 - EN1443 - EN1856 -
EN1457).
The chapter provides instructions for installing a chimney ue eciently and properly, but under no circumstances is it a substitute of the
Standards in force, which the qualied technician must be in possession of. Check with local authorities whether there are any restrictive
regulations in force regarding the combustion air inlet, the smoke outlet system, the ue or the chimney cap.
The company declines all liability relating to the poor functioning of the stove if this is due to the use of an insuciently sized ue in
violation of the Standards in force.
CHIMNEY FLUE
The ue or chimney is of great importance for the proper operation of a solid fuel-burning heating appliance with forced draught, as
modern heating appliances have high eciency with cooler ue gasses and consequently less draught, it is therefore essential that the
ue is built up to standard and always kept in perfect order. A ue that serves a pellet/wood fuelled appliance must be at least category
T400 (or greater if the appliance requires so) and resistant to soot res. Smoke must be extracted through a single ue made of insulated
steel (A) or an existing ue that complies with the intended use (B).
A simple air shaft made of cement must be suitably lined. In both solutions there must be an inspection cap (AT) and/or inspection hatch
(AP) - FIG.1.
It is forbidden to connect more than one wood/pellet-burning appliance or of any other kind (vent hoods... ) to the same ue.
FIGURE 1  SMOKE FLUE