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INSTALLATION GUIDE EN

SEALED PELLET STOVE

CURVE

comfort Air

- part 1 -

Instructions in English

TABLE OF CONTENTS

TABLE OF CONTENTS ..................................................................................................II

INTRODUCTION ..........................................................................................................1

1WARNINGS AND WARRANTY CONDITIONS .................................................................2

2INSTALLATION .........................................................................................................8

3DRAWINGS AND TECHNICAL FEATURES ....................................................................17

4UNPACKING ........................................................................................................... 19

5CLADDING ASSEMBLY ............................................................................................. 22

6OPENING THE DOORS .............................................................................................38

7REMOVING THE BACK FOR MAINTENANCE ...............................................................39

8CONNECTIONS TO ADDITIONAL DEVICES ..................................................................40

9LOADING THE PELLETS ...........................................................................................42

INTRODUCTION

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 device, even if

the boiler 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 respected when the device is installed.

In Italy, for the installation of devices with biomass lower than 35KW, refer to ministerial decree 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, adapted 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 with care 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.

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 alcohol, petrol, liquid fuel for lanterns, diesel, bio-

ethanol, uids for lighting charcoal or similar liquids to light/rekindle the ame

in these devices. Keep these ammable liquids well away from the appliance

when in use.

• 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.

• This appliance can be used by children aged 8 years and above and

persons with reduced physical, sensory or mental capabilities or lack

of experience and knowledge if they have been given supervision

or instruction concerning use of the appliance in a safe way and

understand the hazards involved. Children must not play with the

appliance. Cleaning and user maintenance shall not be carried out by

children without supervision.

• 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.

1-WARNINGS AND WARRANTY CONDITIONS

• Do not put linen on the product to dry. Any drying racks or similar objects 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

extraction pipes, etc.). Avoid coming into contact with these parts

without adequate protective clothing or suitable means, 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 doors/covers on the appliance must remain closed when it is not

used.

• 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. The 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 present 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.

1-WARNINGS AND WARRANTY CONDITIONS

• 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 with 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).

• Live electrical parts: only power the product once it has been fully assembled.

• Disconnect the product from the 230V power supply before performing any

maintenance operation.

• Improper use or poor maintenance of the product can cause hazardous situations

to arise.

• It is forbidden to manually load the fuel into the brazier. Failure to

follow this warning can lead to hazardous situations.

• Before the product is restarted, always remove any unburned pellets

building up in the brazier due to failed ignition, the emptying of the

tank or any situation that may cause this condition.

1-WARNINGS AND WARRANTY CONDITIONS

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 heating 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 on the following page), 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 not meeting 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 system or the repair of one of its components does not extend the guarantee period, and the original expiry

date remains unchanged.

The guarantee covers the replacement or free repair of parts recognised as being faulty at source due to manufacturing defects.

To benet from the guarantee, in the event of a fault, the customer must have the guarantee certicate and present it with the proof of

purchase document to the Technical Assistance Oce.

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 or relocation

• 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 dimensioning with regards 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 the presence of a boiler, any corrosions, incrustations or breaks 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, electrical discharges, res, faults

in the electric and/or hydraulic system.

• Failure to have the stove cleaned on an annual basis by an authorised technician or qualied personnel will result in the loss of the

warranty.

Also excluded from this guarantee are:

• 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.

Save for the legal or regulatory limits, the guarantee does not cover the containment 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 prescription specied in the manual, especially warnings regarding installation,

use and maintenance of the appliance.

1-WARNINGS AND WARRANTY CONDITIONS

SPARE PARTS

In the event of a malfunction, consult the retailer who will forward the call to the Technical Assistance Service.

Use only 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 be worn 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 FOR THE 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.

WHY A SEALED STOVE?

Products constructed with a perfectly sealed structure do not consume the room’s oxygen but draw all the air form the outer environment

(if suitably ducted) and may therefore be installed in all dwellings that require a high degree of insulation such as “passive” or “high energy

eciency” houses. Thanks to this technology there is no risk of smoke emissions in the room, hence no air intakes and relevant aeration

grilles are required in the installation premises.

Consequently, there will be no more drafts of cold air in the room, which make it less comfortable and reduce the overall eciency of the

system. The sealed stove may even be installed in the presence of forced ventilation or in premises that might have negative pressure with

respect to the outside.

2-INSTALLATION

The instructions in this chapter refer explicitly to the Italian installation regulation UNI 10683. In any case, always

observe the domestic regulations in force.

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.

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 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 ISO 17225-2. 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.

• Moisture content: ≤ 10% of the weight.

• Percentage of ash: max 1.2% of the weight (A1 less than 0.7%).

• 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 render the guarantee and product liability invalid.

15 Kg BAG OF FUEL

2-INSTALLATION

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 in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.

Non-ammable walls Flammable walls

CURVE COMFORT AIR

A = 10 cm

B = 15 cm

A = 12 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

(A)

(B)

2-INSTALLATION

FOREWORD

This chapter on the Smoke Flue has been produced in reference to the prescriptions of European regulations (EN13384 - EN1443 - EN1856

- EN1457).

The chapter provides indications for installing an ecient and correct smoke ue but is under no circumstances to substitute the

regulations 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 intake of air for combustion, the smoke extraction system, the ue or the chimney.

The company declines all liability relating to the poor functioning of the boiler if this is due to the use of an insuciently sized ue in

violation of regulations in force.

SMOKE FLUE

The ue or chimney is of great importance for the proper operation of a solid fuel-burning heating appliance with natural 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 working order. A ue that serves a pellet/wood fuelled appliance must be at least

category T400 (or greater if the appliance requires, 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 in cement must be suitably lined. In both solutions there must be an inspection cap (AT) and/or inspection hatch (AP)

- FIG.1.

It is prohibited to connect more than one wood/pellet (*) or any other type of appliance (vent cowling...) to the same ue.

(*) unless there are national derogations (for instance in Germany), which under suitable conditions allow for the installation of several

appliances in the same replace. In any case, strictly follow the product/installation requirements of the relative regulations/legislation

in force in that country

FIGURE 1 - SMOKE FLUE

15°

30°

2-INSTALLATION

TECHNICAL CHARACTERISTICS

Have the eciency of the ue checked by an authorised technician.

The ue must be sealed against ue gasses, in a vertical direction without narrowing, be made with materials impermeable to smoke,

condensation, thermally insulated and suitable to resist normal mechanical stress over time (we recommend replaces made of A/316

or refractory material with insulated round section double chamber). Be suitably insulated externally to avoid condensation and reduce

smoke cooling. It should be separated from combustible or ammable materials with an air gap or insulating materials: check the distance

specied by the manufacturer of the replace according to EN1443. The chimney opening must be in the same room as the appliance,

or at most in the adjoining room, and have a soot and condensation collection chamber beneath the opening, and be accessible via a

watertight metal hatch.

FLAT ROOF

ROOF AT 15°

ROOF AT 30°

A = 0.50 metres

B = DISTANCE > 2 metres

C = DISTANCE < 2 metres

D = O.50 metres

E = TECHNICAL VOLUME

A = MIN. 1.00 metres

B = DISTANCE > 1.85 metres

C = DISTANCE < 1.85 metres

D = 0.50 metres above highest

point

E = 0.50 metres

F = REFLUX ZONE

A = MIN. 1.30 metres

B = DISTANCE > 1.50 metres

C = DISTANCE < 1.50 metres

D = 0.50 metres ABOVE

HIGHEST POINT

E = 0.80 metres

F = REFLUX ZONE

FIGURE 2

FIGURE 3

FIGURE 4

60°

45°

2-INSTALLATION

ROOF AT 60° ROOF AT 45°

DIMENSIONING

The drop in pressure (draft) of a ue depends on its height. Check the drop in pressure with the values indicated in the technical

characteristics. The minimum height of the chimney is 3.5 meters.

The interior cross-section of the ue can be circular (best variation), square or rectangular (the ratio between the interior sides must be

≤1.5) with the sides joined with a minimum radius of 20 mm. The dimension of the cross-section must be minimum Ø100mm.

The cross-sections/lengths of the chimneys shown in the technical data tables are indications for correct installation. Any alternative

congurations must be correctly dimensioned in accordance with the general method of calculation of UNI EN13384-1 or other proven

eciency methods.

Below is a list of some ues available on the market:

Steel chimney AISI 316 with

double chamber insulated with

ceramic bre or equivalent

resistant up to 400°C.

Refractory chimney with

double insulated chamber and

external lightweight concrete

cladding with cellular material

such as clay.

Traditional square-section clay

chimney with insulating empty

inserts.

Avoid products with an internal

rectangular section where the

larger side is 1.5 times the

smaller side (e.g. 20x40 or

15x30).

EXCELLENT GOOD POOR VERY POOR

A = MIN. 2.60 metres

B = DISTANCE > 1.20 metres

C = DISTANCE < 1.20 metres

D = 0.50 metres ABOVE HIGHEST POINT

E = 2.10 metres

F = REFLUX ZONE

A = MIN. 2.00 metres

B = DISTANCE > 1.30 metres

C = DISTANCE < 1.30 metres

D = 0.50 metres ABOVE HIGHEST POINT

E = 1.50 metres

F = REFLUX ZONE

FIGURE 5 FIGURE 6

2-INSTALLATION

MAINTENANCE

The ue must be kept clean, since the deposit of soot or unburned oils reduces the cross-section reducing the draft and thus compromising

the ecient functioning of the heater and, if large build-ups accumulate, can catch re. The ue and chimney must be cleaned and

checked by a qualied chimney sweep at least once a year. Once the maintenance has been performed, request a written declaration that

the device is safe.

Failure to clean the system jeopardises the safety.

CHIMNEY

The chimney is a crucial element for the heating appliance to work properly: we recommend a wind proof chimney (A), see Figure 7.

The area of the opening for smoke extraction must be at least double the cross-section of the smoke duct/ue system, and arranged so

that smoke extraction is ensured even

in strong wind. The chimney must

prevent rain, snow or animals from

entering the chimney. The height of

outow into the atmosphere must be

beyond the reux zone created by the

shape of the roof or any obstacles near

the outlet (see Figures 2-3-4-5-6).

CHIMNEY COMPONENTS

KEY:

(1) CHIMNEY

(2) REFLUX CHANNEL

(3) SMOKE DUCT

(4) THERMAL INSULATION

(5) OUTSIDE WALL

(6) CHIMNEY CONNECTION

(7) SMOKE CHANNEL

(8) HEAT GENERATOR

(9) INSPECTION ACCESS PANEL

FIGURE 7

FIGURE 8

A B

MIN.1,5 m MIN.1,5 m

MIN.1,5 m

MIN.0,3 m

2-INSTALLATION

EXTERNAL AIR INLET

It is mandatory to provide an adequate external air intake that supplies the combustion air required for the product to work properly. The

ow of air between the outside and the installation room may be direct, through an inlet in an external wall of the room; or indirect, via

air intake from adjoining rooms and connecting permanently with the installation room (see Figure 9 b). Adjoining areas may not include

sleeping areas, garages or general areas with a re hazard. During installation one must check the minimum clearances required for air

intake from outside. Take into account the presence of doors and windows that could interfere with the proper ow of air to the stove (see

diagram below).

The air intake must have a minimum total net area of 80 cm2: the surface must be increased accordingly if within the room there are other

active generators (for example: electric fan for stale air extraction, kitchen hood, other stoves, etc...), which could cause cause depression

in the room. One must verify that, with all the equipment on, the pressure drop between the room and the outside does not exceed a value

of 4 Pa. If necessary increase the intake section of the air inlet, which must be made at oor level and always protected with a bird-proof

outer protection grid and in such a way that it cannot be obstructed by any object.

It is possible to connect the air required for

combustion directly to the outside air inlet,

with a pipe of at least Ø50mm, with maximum

length of 3linear metres; each pipe bend shall be

considered equivalent to a linear metre. To attach

the pipe see the back of the stove.

For stoves installed in studio ats, bedrooms and

bathrooms (where allowed), it is mandatory to

connect the combustion air outside. In particular

for sealed stoves the connection must be sealed

in order not to compromise the overall sealed

characteristic of the system.

FIGURE 9 A - DIRECTLY FROM OUTSIDE

FIGURE 10

FIGURE 9 B - INDIRECTLY FROM THE ADJACENT ROOM

A=AIR INLET

B=ROOM TO BE VENTILATED

C=INCREASE OF THE GAP UNDER THE DOOR

2-INSTALLATION

DISTANCE (metres) The air inlet must be at a distance of:

1.5 m UNDER Windows, doors, smoke outlets, cavities, ....

1.5 m HORIZONTALLY Windows, doors, smoke outlets, cavities, ....

0.3 m ABOVE Windows, doors, smoke outlets, cavities, ....

1.5 m AWAY from smoke outlet

CONNECTION TO FLUE

The connection between the ue and the appliance must be via a smoke duct that conforms with EN 1856-2. The connecting section

must extend no more than 4 m horizontally, with a maximum incline of 3% and containing a maximum of 3 90% bends (accessible for

inspection - do not count the T joint at the appliance outlet).

The diameter of the smoke duct must be equal to or greater than that of the appliance outlet (Ø 80 mm).

TYPE OF DEVICE SMOKE DUCT

Minimum vertical length 1.5 metres

Maximum length

(with 1 accessible 90° bend)

6.5 metres

Maximum length

(with 3 accessible 90° bends)

4.5 metres

Maximum number of accessible 90° bends 3

Horizontal sections

(minimum incline 3%)

4 metres

Use smoke ducts with a diameter of 80mm or 100mm depending on the type of system, with silicone gaskets or similar gaskets that can

withstand the high operating temperatures of the appliance (min. T200 class P1). The use of exible metal tubes in bre cement

or aluminium is prohibited. For direction changes, we always recommend the use of a T joint with an inspection cap allowing

easy access for cleaning the tubes. Always ensure that the inspection cap is replaced and hermetically sealed with the seal in tact after

cleaning.

It is prohibited to connect more than one appliance to the same smoke duct, or the discharge from overhead cowling. It is prohibited to

extract the products of combustion directly through the wall, whether into indoor spaces or outdoors.

The smoke duct must be a minimum distance of 400 mm from ammable or heat-sensitive structures.

2-INSTALLATION

EXAMPLES OF CORRECT INSTALLATION

1. Installation of Ø150mm ue with hole for the passage

of the tube increased by:

minimum 100 mm around the tube if next to non

ammable parts such as cement, brick, etc.; or

minimum 300 mm around the tube (or as prescribed by

data tags) if next to ammable parts such as wood etc.

In both cases, install suitable insulation between the ue

and the ceiling.

Always check and respect the data tags on the ue,

in particular the minimum safety distances from

combustible materials.

The previous rules also apply for holes made in walls.

2. Old ue, minimum pipe Ø100mm with the inclusion of

an external access door for chimney cleaning.

3. External ue made of insulated stainless steel pipes,

i.e. with double walls minimum Ø100mm: all securely

mounted on the wall. With wind-proof chimney. See g.

7 type A.

4. Ducting system using T joints that allow easy access for

cleaning without having to remove the tubes

FIGURE 11

U = INSULATING

V = ANY REDUCTION FROM 100 TO 80 MM

I = INSPECTION CAP

S = INSPECTION ACCESS PANEL

P = AIR INLET

T = T JOINT WITH INSPECTION CAP

A = MINIMUM 40 MM

B = MAXIMUM 4 M

C = MINIMUM 3°

D = MINIMUM 400 MM

E = HOLE DIAMETER

F = SEE FIG.2-3-4-5-6

Ø80

Ø50

560

Ø80

1200

100

560

209

196

187

Ø80

104

290

Ø58

3-DRAWINGS AND TECHNICAL FEATURES

DRAWINGS AND CHARACTERISTICS

CURVE COMFORT AIR STOVE DIMENSIONS

3-DRAWINGS AND TECHNICAL FEATURES

TECHNICAL CHARACTERISTICS CURVE COMFORT AIR

Nominal output power 8,1 kW (6966 kcal/h)

Minimum power output 2,3 kW (1978 kcal/h)

Eciency at Max 90,9%

Eciency at Min 92,6%

Temperature of exhaust smoke at Max 188 °C

Temperature of exhaust smoke at Min 89 °C

Particulate /OGC / Nox (13%O

) 17 mg/Nm3 - 1 mg/Nm3 - 142 mg/Nm3

CO at 13% O

at Min and at Max 0,002 – 0,043%

at Min and at Max 6,4% - 14,0%

Recommended draught at Max*** power 0,10 mbar - 10 Pa***

Minimum draft allowed at minimum power 0,05 mbar - 5 Pa

Smoke mass 4,3 g/sec

Hopper capacity 32 litres

Type of pellet fuel Pellet diameter 6-8 mm and size 3/40 mm

Pellet hourly consumption Min ~ 0,5 kg/h* - Max ~ 1,8 kg/h*

Autonomy At min ~ 40 h* - At max ~ 11 h*

Heatable volume m

174/40 – 199/35 – 232/30 **

Combustion air inlet Ø 50 mm

Smoke outlet Ø 80 mm

Air intlet 80 cm

Rated electrical power (EN 60335-1) 81 W (Max 380 W)

Supply voltage and frequency 230 Volt / 50 Hz

Net weight 170 kg

Weight with packaging 180 kg

Distance from combustible material (rear\sides\oor): 120/200/0 mm

Distance from combustible material (ceiling\front): 800/1000 mm

* Data that may vary depending on the type of pellets used

** Volume that can be heated, according to the power requirement per m

(respectively 40-35-30 Kcal/h per m

)

***Value recommended by the manufacturer (non-binding) for optimal product operation

Tested according to EN 14785 in accordance with European regulation for Construction Products (EU 305/2011).

4-UNPACKING

PREPARATION AND UNPACKING

The packaging consists of a recyclable cardboard box in line with RESY standards and a wooden pallet. All packaging materials can be

reused for similar use or eventually disposed of as urban solid waste, in compliance with the regulations in force.

After having removed the packaging make sure the product is intact.

Handle the product with suitable means paying attention to the applicable safety regulations in force. Do not turn the

packaging over and handle the majolica parts with care.

The stoves are delivered with two packages, one with the stove structure and one with the ceramic cladding.

Open the package, remove the cardboard, polystyrene and any straps and position the stove in the preset place making sure that it

complies with the requirements.

The stove body or unit must always be kept in a vertical position when handled, and handled using carts only. Pay particular attention to

the door and its glass, protecting them from mechanical knocks that would compromise their integrity.

If possible, unwrap the stove near the chosen area of installation.

The packaging materials are neither toxic nor harmful.

CURVE STOVE STRUCTURE PACKAGING CURVE STOVE CERAMIC CLADDING PACKAGING

4-UNPACKING

To remove the stove from the pallet, you must remove the two screws ‘’u’’ and plate ‘’s’’ from the stove’s foot. There are four brackets “s”.

REMOVING FASTENING BRACKETS

4-UNPACKING

Position the stove and connect it to the ue pipe. Use the four adjustable feet (J)to get the stove correctly levelled so that the smoke outlet

is lined up with the connecting pipe.

If the stove needs to be connected to an outlet pipe which goes through the rear wall (to connect to the ue), take utmost care to make

sure that the joint is not forced.

If the stove smoke outlet is forced or used improperly to lift it or position it, the operation of the stove can be

damaged irreparably.

1. TURN THE FEET CLOCKWISE TO LOWER THE STOVE

2. TURN THE FEET COUNTER CLOCKWISE TO RAISE THE STOVE

5-CLADDING ASSEMBLY

On delivery, the Curve stove has no ceramic cladding, as shown in the image below. The xing brackets are in part already mounted on the

structure and in part on the ceramics (see explanations below).

Take the box with the ceramics (gure below) and prepare them for installation. The ceramic surfaces are to be assembled to the structure

in accordance with the indications on the following

pages.

Live electrical parts: only

power the product after

completing assembly.

The ceramics are delicate, therefore handle

with care.

POS. DESCRIPTION No.

A-E-H BOTTOM CERAMIC PANELS 3

B-C-F-I TOP CERAMIC PANEL 4

D-G SIDE CENTRAL CERAMIC PANEL 2

L BOTTOM REAR PANEL 1

k SCREWS TO FIX THE CERAMIC

PANELS (not reported in the

drawing to the side)

M TEMPLATE TO FIX THE CERAMIC

PANELS

STOVE WITHOUT CLADDING

5-CLADDING ASSEMBLY

DISASSEMBLING THE TOP

The top is centrally secured to the structure via two “u” screws. Lift the door on the tank side (rear semicircle) and remove the two “u”

screws. At the front instead, the bracket on the top must be placed on the structure of the stove via two rubber pads (“a”). Ensure the top

is placed safely until the ceramic cladding is installed.

5-CLADDING ASSEMBLY

INSTALLING THE FRONT LOWER PANEL

To assemble the ceramic panel proceed as follows:

• • open decorative door “N” and also rebox door “O” (see opening instructions)

• • remove frame “T1” from the structure by also taking out screw “w”, lifting frame “T1” so that the two joints “x” come out of holes “y”

in place on the stove’s structure

• • then take ceramic panel type “A” and secure it to frame “T1” with the four screws (“k”) supplied with the ceramic panels.

5-CLADDING ASSEMBLY

• now take frame assembly “T1” and ceramic panel “A” and place the latter on the structure by inserting the two joints “x” in the holes

on structure “y”. Secure everything to the structure with screw “w”.

5-CLADDING ASSEMBLY

INSTALLING THE FRONT UPPER PANEL

The assembly procedure is similar to the previous one:

• from the structure, remove frame “T2” by taking out the two screws “w” at the top and screw “z” from below.

• a protection for ceramic panel “s” is secured to frame “T2” and xed with two screws

• to secure ceramic panel “B”, eliminate the two screws and continue by following the instructions and using the screws supplied with

the ceramic panel

Attention! To position the top ceramic panel, use template “M” supplied (see explanation in the following pages).

5-CLADDING ASSEMBLY

• take ceramic panel type “B” and secure it to frame “T2” with the four screws (“k”) supplied with the ceramic panels.

• now take the frame assembly “T2” and ceramic panel “B” and place back the latter on the structure via the two screws “w” at the top

and the “z” screw at the bottom (to be secured under the ceramic panel)

5-CLADDING ASSEMBLY

HOW TO USE THE TEMPLATE TO SECURE THE TOP FRONT CERAMIC PANEL

After removing frame “T2” from the structure of the stove, in line with the instructions reported in the above paragraph, take template “M”

to position the ceramic panel and secure it at the top of frame “T2” with the screws supplied.

As described above, secure ceramic panel “B” to frame “T2” by ensuring that the top of the ceramic panel rests against template “M”. After

mounting ceramic panel “B”, remove template “M”, which will be used for the other ceramic panels.

Secure the frame with the ceramic panel to the stove, as specied in the instructions.

CERAMIC ADJUSTMENT FLAPS

The frame of the ceramic panels is tted with aps (“P”), which

are required to ensure the ceramic parts remain in place and that

during operation they do not generate vibrations.

Try and mount the ceramic panels as described in these pages. If

the panel remains loose in relation to the frame, push out aps

“P” so that they touch the ceramic surface, thereby ensuring the

ceramic panels remain xed in place.

5-CLADDING ASSEMBLY

SIDE PANEL ASSEMBLY

Attention! The frame features slotted holes, thereby allowing for a slight adjustment of the ceramic panels. A

template will be provided to the customer to position the ceramic panels from above.

Proceed as follows:

• from the structure, remove frame “T3” by taking out the two screws “w”

• Lift frame “T3” so that holes “y” on the frame can come out from hooks “x” on the structure

5-CLADDING ASSEMBLY

• now take a type “C” ceramic panel, position it on the frame with the template supplied and secure it to frame “T3”.

• try and place back frame “T3” with the rst ceramic surface “C” and ensure it is aligned with top front ceramic surface “B”; if they are

not aligned, go ahead with a new adjustment

• then secure ceramic panel type “D” and type “E” by again using the positioning template

• secure ceramic panels “D” and “E” with screws “k” supplied

• try and t the frame on the structure again and adjust ceramic panel “D” and “E” if necessary

5-CLADDING ASSEMBLY

• with the ceramic panels mounted, go ahead with the nal xing to the structure

• at the bottom, insert the holes of the frame of the ceramic panels to the hooks on the structure and go ahead with the xing with

the two screws “w” at the top

5-CLADDING ASSEMBLY

Proceed in the same way also for the panel on the left-hand side of the stove:

• remove frame “T4” from the stove

• secure ceramic panels “F”, “G” and “H” by taking into account the adjustments for an alignment with the other ceramic surfaces

already installed

•

5-CLADDING ASSEMBLY

HOW TO USE THE TEMPLATE TO SECURE THE SIDE CERAMIC PANEL (same procedure for the right and left panel)..

Attention! With template “M” start to position the rst ceramic panel at the top.

After removing frame “T3” from the structure of the stove, in line with the instructions reported in the above paragraph, take template “M”

to position the ceramic panel and secure it at the top of frame “T3” with the screws supplied.

As described above, secure ceramic panel “C” to frame “T3” by ensuring that the top of the ceramic panel rests against template “M”.

Remove template “M” and place it under ceramic panel “C”. Then place ceramic panel “D” on the panel and secure it. Then remove template

“M” again and position it under ceramic panel “D” to x it to ceramic panel “E” with the same system. Remove template “M” to x the next

ceramic panels.

Secure the frame with the ceramic panel to the stove, as specied in the instructions.

5-CLADDING ASSEMBLY

REAR PANEL ASSEMBLY

• Remove frame “T5” from the structure by taking out the two screws “w” at the top and loosen the two screws “x” at the bottom

• lift frame “T5” from the structure of the stove and remove it

NOTE: there is no need to remove panel “O” to remove panel “T5”. On panel “O” there are two holes that can be used

for loosening and two screws “x” to take out panel “T5”.

5-CLADDING ASSEMBLY

• take ceramic panel type “I” and secure it to frame “T5” via the four screws “k” (consider it as the base to start xing the template)

• then secure ceramic panel type “L” by again using the positioning template

• secure ceramic panel “L” to frame “T5” via the four screws “k”

• try and secure the frame with the ceramic panels on the structure to check the alignment with the other ceramic panels; perform

the necessary adjustments as required

5-CLADDING ASSEMBLY

• when the checks have been carried out, secure frame “T5” with the ceramic panels on the structure, by using the two screws “x” to

secure the bottom of the panel and the two screws “w” to x the top

5-CLADDING ASSEMBLY

HOW TO USE THE TEMPLATE TO SECURE THE REAR CERAMIC PANEL

Attention! With template “M” start to position the rst ceramic panel at the top.

After removing frame “T5” from the structure of the stove, in line with the instructions reported in the above paragraph, take template “M”

to position the ceramic panel and secure it at the top of frame “T5” with the screws supplied and pre-secured to the template.

As described above, secure ceramic panel “C” to frame “T5” by ensuring that the top of the ceramic panel rests against template “M”.

Remove template “M” and place it under ceramic panel “I”. Then place ceramic panel “L” on the panel and secure it. Remove template “M”

to x the next ceramic panels. Secure the frame with the ceramic panel to the stove, as specied in the instructions.

6-OPENING THE DOORS

The Curve stove is tted with two doors. To open decorative door “E”, insert cold handle “Z” into the designated joint on the door itself. To

open rebox door “F”, insert the cold handle into the hole of handle “P” and pull.

Attention! Only open the doors when the stove is switched o and cold.

DECORATIVE DOOR “E”

FIREBOX DOOR “F”

7-REMOVING THE BACK FOR MAINTENANCE

REAR PANEL

If it is necessary to intervene on any stove component, proceed as follows to remove the rear panel “O”.

• remove the two screws “s”, so that element “P” can be removed

• remove the four screws “v”

• now panel “O” can be completely removed from the structure of the stove (even when the stove has been installed, therefore with

the smoke pipe connected)

8-CONNECTIONS TO ADDITIONAL DEVICES

MODEM INSTALLATION “M”/WEB-WIFI INTERFACE “N”

Install the Modem “M” or the Web-Wi-Fi-Interface “N” using the holes on the back of the product and follow the instructions on the

product chosen. During installation we recommend breaking the knock-out panels in the xing aps so that the modem or the web

interface rest perfectly against the structure.

In the Play Store for Android (Smartphone and Tablet) and in iTunes for iOS, you will nd the APP “MCZ WIFI”

USB SOCKET

There is a USB socket on the back of the stove, if a software update is required; the ceramic/metal parts do not have to be removed to reach

the socket directly in the circuit board (pos. 5 in the PCB).

Attention!

The USB socket must be used by skilled

technicians.

Risk of damaging the product.

8-CONNECTIONS TO ADDITIONAL DEVICES

Comfort Air ducting

Comfort Air stoves can channel the air into other rooms through the connection with the accessory pipes to the rear extension provided

as standard.

If you do not wish to channel the air, the hot air may be let out through the rear vent without connecting any pipe.

9-LOADING THE PELLETS

LOADING THE PELLETS

The fuel is loaded from the top of the stove by lifting rear top hatch “S” and pellet loading door “T”. To open door “T”, insert the cold handle

into the designated hole “f”.

Pour the pellets in slowly so that they are deposited at the bottom of the hopper.

If loading pellets when the stove is running, open the door of the tank using the stove mitten that comes with the

stove itself.

When loading, do not let the pellet bag come into contact with hot surfaces.

Never remove the protection grid inside the hopper.

No other type of fuel other than pellets is to be inserted into the hopper, in compliance with above-mentioned

specications. Store the spare fuel at an adequate safe distance.

Do not pour pellets directly onto the brazier but only into the hopper.

When the appliance is running and when it is turned o, most of the stove surfaces are very hot (door, handle, glass,

smoke outlet pipes, etc.). Therefore it is recommended to avoid coming into contact with these parts.

21/09/16REV.28901606200

MCZ GROUP S.p.A.

Via La Croce n°8

33074 Vigonovo di Fontanafredda (PN) – ITALY

Telephone: +39 0434/599599 r.a.

Fax: +39 0434/599598

Internet: www.mcz.it

e-mail: mcz@mcz.it

MCZ Curve COMFORT AIR Handleiding

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