duo hydro-air
INSTALLATION GUIDE
PELLET STOVE
DUO HYDRO-AIR
PART 1 - REGULATIONS AND ASSEMBLY
Instructions in English
EN
TABLE OF CONTENTS
TABLE OF CONTENTS................................................................................................... II
INTRODUCTION...........................................................................................................1
1-WARNINGS AND WARRANTY CONDITIONS..................................................................2
2-INSTALLATION..........................................................................................................9
3-DRAWINGS AND TECHNICAL FEATURES.....................................................................18
4-INSTALLATION AND ASSEMBLY................................................................................20
5-HYDRAULIC CONNECTION........................................................................................32
6-ELECTRICAL CONNECTION.......................................................................................35
II
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 fireplaces/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 qualified installation
technician with the appropriate requisites must issue a certificate 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
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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 clarifications.
“NOTE” provides the reader with additional information.
SYMBOLS USED IN THE MANUAL
CAUTION:
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.
Technical Dept. - All rights reserved - Reproduction is prohibited
1
1-WARNINGS AND WARRANTY CONDITIONS
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2
SAFETY PRECAUTIONS
Installation, electrical connection, function test and maintenance
must only be carried out by authorised and qualified personnel.
Install the product in accordance with all local and national legislation
and regulations in force in the region or state.
A bad use or unproper maintainance of the product can bring to a
serious risk of explosion in the combustion chamber.
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, bioethanol, fluids for lighting charcoal or similar liquids to light/rekindle the flame
in these devices. Keep these flammable 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 from 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 shall not play with the
appliance. Cleaning and user maintenance shall not be made 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.
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.
1-WARNINGS AND WARRANTY CONDITIONS
• 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
effective earthing device.
• Switch the product off 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.
• Shut the stove down in the event of a breakdown or bad running and
contact the engineer immediately.
• Pellets must not be fed manually into the burner – this wrong
behaviour can generate an abnormal amount of unburned gas, with a
risk of explosion in the chamber.
• Accumulated unburnt pellets in the burner after a failed ignitions
must be removed before lighting.
• Failure too clean and maintain the brazier can result in improper running and
explosions within the stove. Make sure you remove and clear the holes in the
brazier and any loose encrustations every time you empty the ash from the
stove or every time you have a failed ignition.Make sure that the holes in the
brazier are never reduced in size as this will affect the safe performance of the
stove if not maintained.
• Do not wash the product with water. The water could get inside the unit and
damage the electrical insulation and cause electric shocks.
Technical Dept. - All rights reserved - Reproduction is prohibited
3
1-WARNINGS AND WARRANTY CONDITIONS
• A carbon monoxide alarm must be fitted in the room where the appliance is
sited Refer too ADJ part 2.34 through too 2.36 page 41 (ONLY FOR UK).
• If there is a fire in the flue pipe, extinguish the stove, disconnect it from the
power supply and never open the door. Then contact the competent authorities.
• Do not light the stove with flammable materials if the ignition system breaks
down.
• 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 fire hazard and is
equipped with power and air supplies and smoke extractors.
• In the event of fire in the chimney, turn off 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 flooring is made of flammable
materials.
• In the event of a malfunction with the ignition system, do not force it to light by
using flammable materials.
• Special maintenance must only be performed by authorised and qualified
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 flammable material (e.g.
wood, fitted carpet or plastic).
• Live electrical parts: only power the product after completing assembly.
• Disconnect the product from the 230V power supply before performing any
maintenance operation.
• IF ANY SMOKE SPILLAGE IS SEEN WITHIN THE ROOM OR THE APPLIANCE
SUFFERS FROM AN EXPLOSIVE IGNITION PLEASE TURN OFF THE
APPLIANCE, VENTILATE THE ROOM AND CONTACT THE INSTALLER/
4
1-WARNINGS AND WARRANTY CONDITIONS
SERVICE ENGINEER IMMEDIATELY.
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.
• Use only the fuel recommended by MCZ (for Italy pellets with a diameter of 6 mm and for other European countries with a diameter
of 6-8 mm) and provided only with an automatic supply system.
• Periodically check and clean the smoke outlet ducts (connection to the flue pipe).
• Accumulated unburnt pellets in the burner after repeated failed ignitions 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.
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 certificate 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 effective.
We recommend functionally testing the product before completion with the relevant finishes, where provided (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.
In order to activate the product warranty the commissioning document which is supplied with the appliance and also is
available as a download from the Specflue website must be filled in correctlty and returned within 14 days (ONLY FOR UK).
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5
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 fix 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 flow, condensation, hardness or acidity of the
water, improperly performed descaling treatments, lack of water, mud or limescale deposits
• inefficiency of chimneys, flues or parts of the plant affecting the equipment
• damage caused by tampering with the appliance, atmospheric agents, natural disasters, vandalism, electrical discharges, fires, faults
in the electric and/or hydraulic system.
• Failure to have stove maintenance performed on an annual basis by an authorised technician or qualified 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 specific 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 specified in the manual, especially warnings regarding installation,
use and maintenance of the appliance.
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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 modified 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 differentiated waste collection centre set up by the local authorities or to a retailer that provides this service.
Separating and recycling prevents potential negative effects on the environment and health (often caused by inappropriately disposing of
product parts). It also allows materials to be recovered in order to obtain significant savings in energy and resources.
Technical Dept. - All rights reserved - Reproduction is prohibited
7
1-WARNINGS AND WARRANTY CONDITIONS
RULES FOR INSTALLATION
The product in question is a stove that uses wood pellets.
Below is a list of European regulations regarding the installation of the product:
EN 12828 Heating systems design.
IEC 64-8 Electrical systems with rated voltage not exceeding 1000 V AC and 1500 V DC.
EN 1443 General chimney regulation
EN 1856-1 metal smoke ducts
EN 1856-2 metal smoke extraction channels
EN 1457 chimneys - Interior terracotta / ceramic flues
EN 13384-1 Chimneys - Thermal and dynamic fluid calculation methods - Part 1: Chimneys connected to a single appliance
Below are some applicable regulations for Italy:
UNI 10683:2012 Heat generators fuelled by wood or other solid bio-fuels - Test, installation, control and maintenance (for thermochemical
power at the firebox lower than 35kW)
UNI/TS 11278 general technical regulation for the choice of smoke duct/flue
UNI 10847:2000 Smoke extractor systems for liquid and solid fuelled generators - Maintenance and control - Guidelines and procedures
UNI 8065 water treatment in civil plants.
UNI 9182 Hot and cold (sanitary) water supply and distribution systems.
Installation must be carried out with reference to the diagram of the heating system prepared in accordance with the
standards and local recommendations in force:
In any case, respect:
For the heating appliance Local requirements concerning the chimney connection.
Local requirements for fire-fighting standards.
For electrical parts - EN 60335 ''Safety of electrical household appliances and similar"
Part 1 - General requirements
Part 2 - Special regulations for appliances with gas, gas oil and solid fuel burners with electrical connections.
8
2-INSTALLATION
The instructions contained in this chapter explicitly refer to the regulations of the Italian installation Standard UNI
10683. In any case, always comply with 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 offers different 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 3 and 40 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 calorific 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.
15 Kg BAG OF FUEL
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 certifications for pellets currently available on the European market guarantee that the fuel complies with class A1/
A2 according to ISO 17225-2. (formerly EN 14961). These certifications include, for example, ENPlus, DINplus, Ö-Norm M7135, and in
particular, guarantee the following characteristics:
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calorific 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: 3÷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 certified fuel for its products (ENplus, DINplus, Ö-Norm M7135).
Poor quality pellets or others that do not comply with the characteristics specified previously may compromise the
operation of your product and can therefore render the guarantee and product liability invalid.
Technical Dept. - All rights reserved - Reproduction is prohibited
9
2-INSTALLATION
FOREWORD
The installation position must be chosen according to the room, to the smoke extraction system, to the chimney flue. Check with local
authorities whether there are any restrictive regulations in force regarding the combustion air inlet, the smoke outlet system, the
flue 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 qualified technician, who must issue a declaration of conformity of the system to the purchaser and
will assume full responsibility for final 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 reflux of smoke in the room
• fumes extraction takes place in total safety (sizing, smoke seal, distances from flammable materials..).
We especially recommend to check the data tags of the flue 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 flue. It is forbidden to install the stove in rooms with a fire hazard.
Installation in studio flats, 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 effective aeration of
the appliance and a good distribution of heat in the room.Observe distances from flammable or heat-sensitive objects (sofas, furniture,
wood panelling, etc..) as specified below. The front distance from flammable materials must be at least as set out in the product’s technical
data table.
If particularly delicate objects are present, such as furniture, curtains or sofas, increase the stove clearance accordingly.
If the floor is made of wood, it is recommended to fit a floor protection sheet in compliance with the Standards in
force in the country of installation.
A
Non-flammable walls
Flammable walls
A = 5 cm
B = 5 cm
A = 10 cm
B = 10 cm
DUO HYDRO AIR
B
If the floor 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 floor with adequate load capacity.
If the existing construction does not meet this requirement, one must take appropriate measures (for example a load distribution plate).
10
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 efficient and correct smoke flue but is under no circumstances to substitute the
regulations in force, which the qualified 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 flue 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 insufficiently sized flue in
violation of regulations in force.
SMOKE FLUE
The flue 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 efficiency with cooler flue gasses and consequently less draught, it is therefore essential that the
flue is built up to standard and always kept in perfect working order. A flue that serves a pellet/wood fuelled appliance must be at least
category T400 (or greater if the appliance requires, and resistant to soot fires. Smoke must be extracted through a single flue made of
insulated steel (A) or an existing flue 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 flue.
min.3,5 metri
The stove must be connected to a flue pipe or an internal or external vertical duct conforming to EN 1856-1-2 to suit the
appliance and types of fuels to be burnt – refer to detailed guidance in sections 2, 3 and 4 in ADJ (ONLY FOR UK)
AP
(A)
AT
(B)
FIGURE 1 - SMOKE FLUE
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11
2-INSTALLATION
TECHNICAL CHARACTERISTICS
Have the efficiency of the flue checked by an authorised technician.
The flue must be sealed against flue 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 fireplaces 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 flammable materials with an air gap or insulating materials: check the
distance specified by the manufacturer of the fireplace 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
D
A
B
C
E
A = 0.50 metres
B = DISTANCE > 2 metres
C = DISTANCE < 2 metres
D = 0.50 metres
E = TECHNICAL VOLUME
FIGURE 2
ROOF AT 15°
B
C
D
A
F
E
15°
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 AREA
FIGURE 3
ROOF AT 30°
B
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 AREA
C
D
A
30°
E
F
FIGURE 4
12
2-INSTALLATION
ROOF AT 60°
ROOF AT 45°
B
B
C
C
D
D
E
A
F
60°
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 AREA
FIGURE 5
A
E
45°
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 AREA
F
FIGURE 6
DIMENSIONING
The drop in pressure (draft) of a flue 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 flue 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
configurations must be correctly dimensioned in accordance with the general method of calculation of UNI EN13384-1 or other proven
efficiency methods.
Below is a list of some flues available on the market:
AISI 316 steel chimney with
double chamber insulated
with ceramic fibre or
equivalent resistant up to
400°C.
Refractory chimney with Traditional
square-section Avoid products with an
double insulated chamber and clay chimney with insulating internal rectangular section
external lightweight concrete empty inserts.
where the larger side is 1.5
cladding with cellular material
times the smaller side (e.g.
such as clay.
20x40 or 15x30).
EXCELLENT
GOOD
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POOR
VERY POOR
13
2-INSTALLATION
MAINTENANCE
The flue must be kept clean, since the deposit of soot or unburned oils reduces the cross-section reducing the draft and thus compromising
the efficient functioning of the heater and, if large build-ups accumulate, can catch fire. The flue and chimney must be cleaned and
checked by a skilled chimney sweep at least once a year. Once the check/maintenance has been performed, request a signed report stating
that the system is safe.
Failure to clean the system jeopardises its 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/flue 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 outflow into the
atmosphere must be beyond the reflux
zone created by the shape of the roof or
any obstacles near the outlet (see Figures
2-3-4-5-6).
FIGURE 7
CHIMNEY COMPONENTS
1
3
4
KEY:
(1) CHIMNEY CAP
(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
2
9
5
6
7
FIGURE 8
8
9
9
14
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
flow 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 fire 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 flow 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. A check must be carried out to ensure that, with all equipment on, the pressure drop between the room and the
outside does not exceed a value of 4 Pa. (also for Oyster appliances if combustion air has not been suitably ducted outside). If necessary
increase the intake section of the air inlet, which must be made at floor level and always protected with a bird-proof outer protection grid
and in such a way that it cannot be obstructed by any object.
FIGURE 9 A - DIRECTLY FROM OUTSIDE
FIGURE 9 B - INDIRECTLY FROM THE ADJACENT ROOM
B
B
C
A
A
A=AIR INLET
B=ROOM TO BE VENTILATED
C=INCREASE OF THE GAP UNDER THE DOOR
MIN.1,5 m
MIN.1,5 m
MIN.0,3 m
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 flats, 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.
MIN.1,5 m
FIGURE 10
Technical Dept. - All rights reserved - Reproduction is prohibited
15
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 flue 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°C 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 flexible metal tubes in fibre 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 flammable or heat-sensitive structures.
SUPPLEMENTARY ISTRUCTIONS ONLY FOR UK
FOR CONNECTION TO THE FLUE PIPE, NOT MORE THAN 150mm OF HORIZONTAL PIPE MUST BE USED AND NOT MORE THAN 4 x
45° bends MUST BE USED. I accordance with UK Building Regulations .
All exterior flue or flue used internaly above 1.8m should be twin wall insulated pipe installed in accordance with ADJ reference page 23
section 1.31 and 1.32 and 1.33 & Hetas regulations.
The external fluepipe must have internal dimensions of a minimum of 150mm, and maximum 180mm.
Check with suitable instruments that there is a minimum draught of 5 Pa. on low fire and 10pa on high fire. The flue must
always run under negative pressure and a cold flue pull of – 2>3 pascals must be secured.
16
2-INSTALLATION
EXAMPLES OF CORRECT INSTALLATION
1
U
F
E
V
I
2
1. Installation of Ø150mm flue with hole for the passage
of the tube increased by:
minimum 100 mm around the tube if next to non
flammable parts such as cement, brick, etc.; or
minimum 300 mm around the tube (or as prescribed by
data tags) if next to flammable parts such as wood etc.
In both cases, install suitable insulation between the
flue and the ceiling.
Always check and respect the data tags on the flue,
in particular the minimum safety distances from
combustible materials.
The previous rules also apply for holes made in walls.
2. Old flue, minimum pipe Ø100mm with the inclusion
of an external access door for chimney cleaning.
3. External flue made of insulated stainless steel pipes,
i.e. with double walls minimum Ø100mm: all securely
mounted on the wall. With wind-proof chimney. See fig.
7 type A.
4. Ducting system using T joints that allow easy access
for cleaning without having to remove the tubes
3
D
B
U
I
I
A
U
C
I
4
S
T
P
I
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
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17
3-DRAWINGS AND TECHNICAL FEATURES
DRAWINGS AND CHARACTERISTICS
043
1213
DUO HYDRO - AIR STOVE DIMENSIONS
187 226
413
558
64
417
080 048
582
18
10
202
382
080
3-DRAWINGS AND TECHNICAL FEATURES
TECHNICAL CHARACTERISTICS
Nominal output power
Nominal output power (H2O)
Minimum output power
Minimum output power (H2O)
Efficiency at Max
Efficiency at Min
Temperature of exhaust smoke at Max
Temperature of exhaust smoke at Min
Particles/OGC/Nox (13%O2)
CO at 13% O2 at Min and at Max
CO2 at Min and at Max
Smoke mass
Max operating temperature
Recommended draught at Max power***
Recommended draught at Min power
Hopper capacity
Type of pellet fuel
Pellet hourly consumption
Autonomy
Heatable volume m3
Combustion air inlet
Smoke outlet
Air inlet
Rated electrical power (EN 60335-1)
Supply voltage and frequency
Net weight
Weight with packaging
Distance from flammable material (back)
Distance from flammable material (side)
DUO HYDRO-AIR
22,3 kW (19178 kcal/h)
18,0 kW (15480 kcal/h)
4,4 kW (3784 kcal/h)
3,0 kW (2580 kcal/h)
92,5%
95,0%
160°C
71°C
2 mg/Nm3 - 0,2 mg/Nm3 - 132 mg/Nm3
0,040 – 0,012%
7,03% - 12,49%
12,6 g/sec
2,5 bar - 250 kPa
0,10 mbar - 10 Pa***
0,02 mbar - 2 Pa
44 litres
Pellet diameter 6-8 mm and size 3÷40 mm
Min ~ 0,9 kg/h* - Max ~ 4,9 kg/h*
At min ~ 28 h* - At max ~ 5 h*
481/40 – 550/35 – 642/30 **
Ø 50 mm
Ø 80 mm
80 cm2
120 W (Max 420 W)
230 Volt / 50 Hz
190 kg
200 kg
100 mm
100 mm
* Data that may vary depending on the type of pellets used
** Volume that can be heated, according to the power requirement per m3 (respectively 40-35-30 Kcal/h per m3)
***Value recommended by the manufacturer (non-binding) for optimal product operation
Tested according to EN 14785 in accordance with European regulation for Construction Products (UE 305/2011)
Technical Dept. - All rights reserved - Reproduction is prohibited
19
4-INSTALLATION AND ASSEMBLY
PREPARATION AND UNPACKING
The packaging consists of a recyclable cardboard box according to RESY standards, recyclable EPS foam inserts, wooden pallets. 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 ceramic parts with care.
The DUO stove is delivered with two overlapping packaging:
• the first contains the stove structure (fig. 1).
• the second (fig.2) contains the box with the ceramic cladding (1 top, 2 front panels, 6 side panels)
Open the packaging, remove the two screws on the right and the two screws on the left (see figure 4) that secure the base of the stove to
the pallet, and position the stove in the selected place, ensuring that it is complies with the above instructions.
FIGURE 2 - CERAMIC PANEL
PACKAGING
FIGURE 1 - REMOVING PACKAGING
SCREWS
20
4-INSTALLATION AND ASSEMBLY
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.
The product must always be handled with care. If possible, unwrap the stove near the chosen area of installation.
The packaging materials are neither toxic nor harmful, therefore no particular disposal measures are required.
Therefore, the end user is responsible for product storage, disposal or possible recycling in compliance with the relative applicable laws in
force. Do not store the unit/stove or its cladding without their packaging.
Position the stove and connect it to the flue pipe. Use the four adjustable feet (J) to get the stove correctly levelled so that the smoke
outlet (S) is lined up with the connecting pipe (H).
If the stove needs to be connected to an outlet pipe which goes through the rear wall (to connect to the flue), 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.
J
H
S
J
1. TURN THE FEET CLOCKWISE TO LOWER THE STOVE
2. TURN THE FEET COUNTER CLOCKWISE TO LIFT THE STOVE
Technical Dept. - All rights reserved - Reproduction is prohibited
21
4-INSTALLATION AND ASSEMBLY
ASSEMBLING THE FRONT AND SIDE CLADDING
The stove is delivered with all ceramic parts packaged and therefore, before installing the side tiles and the top, it is necessary to insert
the front panels.
In order to insert the front panel it is necessary to work on the right side of the stove (handle side) and proceed as follows:
• Remove the micro-perforated sheet metal grille "B" removing the two screws "c" (fig.3).
• Remove the two screws “d”, lift and remove the bracket“E” (fig.4)
c
d
B
E
A
FIGURE 3 - REMOVAL OF GRILLE B
22
FIGURE 4 - REMOVAL OF E BRACKET
4-INSTALLATION AND ASSEMBLY
•
Lift profile “A” to remove it from the base and place it in a safe position (fig.5)
FIGURE 5 - REMOVAL OF PROFILE A
A
A
Technical Dept. - All rights reserved - Reproduction is prohibited
23
4-INSTALLATION AND ASSEMBLY
•
Take the two front ceramic pieces “F” and “G” and insert them on the right (handle side) towards the left so that they fit exactly in
the seat (fig.6)
FIGURE 6 - ASSEMBLY OF FRONT CERAMIC PANELS “F” - “G”
G
A
F
24
4-INSTALLATION AND ASSEMBLY
•
After inserting ceramic pieces “F” and “G”, reinsert profile “A”, bracket “E” tightening the two screws “d” (fig.7).
FIGURE 7 - ASSEMBLY OF PROFILE “A” AND BRACKET “E”
d
E
G
F
A
Technical Dept. - All rights reserved - Reproduction is prohibited
25
4-INSTALLATION AND ASSEMBLY
• At this point insert side ceramic pieces “R”, “S”, “T” (fig.8) sliding them from the top towards the bottom on the guide of profile “A”.
ATTENTION!
On the top and lower part of the ceramic tile we recommend placing small pieces of felt in order to avoid that the
ceramic tiles break and also to level the spacing if necessary.
FIGURE 8 - SIDE PANEL ASSEMBLY
R
S
T
26
4-INSTALLATION AND ASSEMBLY
On the left side (opposing the handle - fig.9) remove the micro-perforated grille "B" from the structure removing the two screws "c".
Insert the three ceramic pieces “U”, “V”, “Z” sliding them from the top towards the bottom on the guide of profile “A”.
ATTENTION!
On the top and lower part of the ceramic tile we recommend placing small pieces of felt in order to avoid that the
ceramic tiles break and also to level the spacing if necessary.
c
U
B
V
Z
A
A
FIGURE 9 - SIDE PANEL ASSEMBLY
Technical Dept. - All rights reserved - Reproduction is prohibited
27
4-INSTALLATION AND ASSEMBLY
At this point it is possible to screws the micro-perforated grilles "B" (fig.10) to the structure and proceed with top positioning.
FIGURE 10 - ASSEMBLY OF GRILLES “B”
B
B
28
4-INSTALLATION AND ASSEMBLY
ASSEMBLY OF THE CERAMIC TOP
Assemble the top "K" resting it on the four top rubber supports (see details below - fig.12) of the stove. The part under the ceramic top is
equipped with four small cavities corresponding with the rubber supports.
FIGURE 11 - TOP ASSEMBLY
K
FIGURE 12 - DETAIL OF TOP RUBBER SUPPORTS
Technical Dept. - All rights reserved - Reproduction is prohibited
29
4-INSTALLATION AND ASSEMBLY
LOADING THE PELLETS
Fuel is loaded from the upper part of the stove by lifting the door. Pour the pellets into the hopper.
This is easier if performed in two steps:
Pour half of the contents into the hopper and wait for the fuel to settle on the bottom.
Then pour in the rest.
Never remove the protection grid inside the hopper. When loading, do not let the pellet bag come into contact with
hot surfaces.
No other type of fuel other than pellets is to be inserted into the hopper, in compliance with above-mentioned
specifications.
Store the spare fuel at an adequate safe distance.
Do not pour pellets directly onto the brazier but only into the hopper.
Most of the stove surfaces are very hot (door, handle, glass, smoke outlet pipes, hopper door etc.), therefore it is
recommended to avoid coming into contact with these parts without appropriate protective clothing.
LOADING THE PELLETS
CONDUIT FOR THE AUXILIARY TANK (optional)
It is possible to purchase conduit to be fastened, using four screws, to the back of the stove, in correspondence of the knock-out panel,
first the
square and then the round piece is to be removed.
This conduit makes it possible to insert pellets into the tank through an auxiliary tank (not supplied).
1
30
2
4-INSTALLATION AND ASSEMBLY
SAFETY
PROCEDURE TO FOLLOW IF ANY SMOKE SPILLAGE IS SEEN WITHIN THE ROOM OR THE APPLIANCE SUFFERS FROM AN EXPLOSIVE
IGNITION PLEASE TURN OFF THE APPLIANCE, VENTILATE THE ROOM AND CONTACT THE INSTALLER/ SERVICE ENGINEER IMIDIATLEY.
User Training
In ALL cases the installation and commissioning engineer MUST carry out a thorough handover of the appliance to the
homeowner / end user. The following elements should be covered to the satisfaction of the end user. Failure to do this may
result in unsafe use of the appliance:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Explanation of the appliance and how it works
Necessity to maintain ventilation to the appliance and the issues that may arise otherwise
Fuel useage and supply
How to light the appliance safely
What to do in the event of failed ignitions
What to do in the event of alarms (in particular those generated when the appliance runs out of fuel)
How to maintain the appliance correctly and the importance of carrying out these tasks each month
It is good practise to agree a date for the fisrt annual service
Explain the importance of the CO alarm in accordance with approved document J of the building regs (ONLY FOR UK)
Explain the need for the flue draft stabiliser and its position within the flue system (ONLY FOR UK)
Discuss the use of secondary heating systems if applicable
Explain how the remote control or room stats operate and their optimal positioning
Explain the need for the appliance data plate in accordance with approved document J of the building regulations (ONLY FOR UK)
The commissioning process and paperwork should also be explained to the homeowner. A copy of the base settings on the
commissioning paperwork should also be left with the appliance (ONLY FOR UK).
Technical Dept. - All rights reserved - Reproduction is prohibited
31
5-HYDRAULIC CONNECTION
PLUMBING SYSTEM CONNECTION
IMPORTANT!
The connection of the stove to the plumbing system must be carried out ONLY by specialized personnel who are
capable of carrying out installation properly, in compliance with current standards in the country of installation.
The manufacturer will not be held responsible for damage to persons or things in the event of failed operation if the
aforementioned warning is not complied with.
It is important that ONLY qualified engineers are used to fit and commission the appliance in ALL cases. The installing
engineer MUST hold a QCF recognised biomass qualification. Any company using sub-contractors MUST ensure they also
hold the relevant qualifications (ONLY FOR UK).
CONNECTION DIAGRAM
A1
A2
C
E
Heating water supply 3/4”M
Heating water return 3/4”M
3 bar safety shut off valve– 1/2”F
System emptying device 1/2”F
C
E
A1
A2
67
50
169
55 60
106
187
IMPORTANT!!!
CLEAN THE ENTIRE SYSTEM BEFORE CONNECTING THE STOVE, IN ORDER TO REMOVE ALL RESIDUE AND DEPOSITS.
Upstream from the stove, always install shutters so as to disconnect it from the plumbing system should it be
necessary to move it, or when it requires routine and/or special maintenance.
Connect the stove using hoses so that the stove is not too strictly connected to the system, and to allow slight
movements.
32
5-HYDRAULIC CONNECTION
CONNECTING THE SYSTEM
Make the connections to the corresponding fittings shown in the diagram on the previous page. Make sure the pipes are not placed under
tension or undersized.
IT IS STRONGLY RECOMMENDED TO WASH THE ENTIRE SYSTEM BEFORE CONNECTING THE STOVE IN ORDER TO GET RID
OF RESIDUES AND DEPOSITS.
Upstream from the stove, always install shutters so as to disconnect it from the plumbing system should it be
necessary to move it, or when it requires routine and/or special maintenance. Connect the stove using hoses so that
the stove is not too strictly connected to the system, and to allow slight movements.
The pressure discharge valve (C) is always connected to a water drain pipe. The pipe must be adequate to support the
water's high temperature and pressure.
CLEANING THE SYSTEM
It is mandatory for the connections to be easy to disconnect by way of unions with rotating connection.
Install suitable shutters to cut off the tubes from the heating system. Assembling the safety valve on the system is compulsory.
In order to protect the heating system from damage caused by corrosion, incrustation or deposit build-up, it is important to clean the
appliance before installation, using suitable products, in compliance with Standard UNI 8065 (water treatment of thermal plants for civil
use).
The use of FERNOX PROTECTOR F1 (available at our authorised centres) product is recommended, this provides long term protection
against corrosion and calcium build-up for heating systems. It prevents the corrosion of the metal parts of the appliance, i.e. the ferrous
metals, copper and copper and aluminium alloys. It also reduces the noise produced by the boiler. Refer to the instructions on the product.
Cleaning should be performed by a qualified technician.
We also recommend the use of FERNOX CLEANER F3 and LEAK SEALER F4, always available from our authorised distribution centres.
FERNOX F3 is a neutral product for rapid and efficient cleaning of heating appliances. It has been designed to eliminate residues, oily
deposits and incrustations from existing appliances of all ages. It can help restore the heating efficiency of the boiler and reduce the noise
it generates.
FERNOX F4 is intended to be used with all heating appliances to seal micro fractures that cause small and inaccessible leaks.
FILLING THE SYSTEM
To fill the system, the stove can be equipped with an end piece (optional) with a non-return valve (D), for manual filling of the heating
system (if the option is not installed, the filling tap on the main boiler will be used). During this operation, any air in the system is released
from the automatic vent valve located under the top.
To ensure the valve vents, it is advisable to loosen the grey cap one turn and leave the red cap blocked (see figure). The filling pressure
of the system WHEN COLD must be 1 bar. During operation, if the system pressure drops (due to evaporation of dissolved gases in the
water) to values lower than the minimum indicated above, the user must use the filling tap to bring the pressure back up to its normal
pressure.
For proper operation of the stove WHEN HOT, the pressure in the boiler must be 1.5 bar.
To monitor system pressure, the end piece (optional) is equipped with a pressure gauge (M).
Upon completion of this operation, always close the tap.
Technical Dept. - All rights reserved - Reproduction is prohibited
33
5-HYDRAULIC CONNECTION
END PIECE WITH A FILLING TAP
(D) AND PRESSURE GAUGE (M)
(ACCESSORY)
VENT VALVE UNDER THE TOP
WATER CHARACTERISTICS
The characteristics of the water used to fill the system are very important to prevent the build-up of mineral salts and the formation of
incrustations along the pipes, in the boiler and in the heat exchangers.
Therefore, please GET YOUR PLUMBER'S ADVICE CONCERNING:
•
•
•
•
•
Hardness of water circulating in the system, to prevent problems of incrustation and limescale, especially in
the domestic water heat exchanger. (> 25° French).
Installation of a water softener (if water hardness exceeds 25° French).
Filling the system with treated water (demineralised).
Possibly providing an anti-condensation circuit.
Installation of plumbing bumpers to prevent banging along the fittings and pipes.
If you have very extensive systems, with a large amount of water, or which require frequent refilling, the installation of water softening
systems.
It should be remembered that incrustations drastically reduce performance due to low thermal conductivity.
34
6-ELECTRICAL CONNECTION
ELECTRICAL CONNECTION
First connect the power cable to the back of the stove and then to a wall socket.
The main switch must only be activated to switch the stove on; otherwise, it is advisable to keep it switched off.
It is recommended to disconnect the power cable when the stove is not used.
ELECTRICAL STOVE CONNECTION
STOVE POWER SUPPLY
After connecting the power cable to the back of the stove, turn the switch at the back to position (I).
The luminous switch button will light up.
The switch on the back of the stove is used to power the system.
On the rear of the stove there is a fuse holding compartment which is located underneath the supply socket. Use a screwdriver to open the
STOVE POWER SUPPLY
FUSE HOLDER COMPARTMENT
STOVE SWITCH
fuse-holder compartment and if necessary replace them (3.15 A delayed)
Technical Dept. - All rights reserved - Reproduction is prohibited
35
Via La Croce n°8
33074 Vigonovo di Fontanafredda (PN) – ITALY
Telephone: +39 0434/599599 r.a.
Fax: 0434/599598
Internet: www.mcz.it
www.mcz.it e-mail: [email protected]
8901505500
REV 0
12/01/15
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