RED COMPACT 35 User manual

INSTALLATION AND USER GUIDE EN
translation of original instructions
PELLET BOILER
COMPACT 35

II
TABLE OF CONTENTS
TABLE OF CONTENTS......................................................................................II
INTRODUCTION............................................................................................. 1
1WARNINGS AND WARRANTY TERMS.............................................................. 2
2INSTALLATION INSTRUCTIONS ..................................................................... 7
3DRAWINGS AND TECHNICAL SPECIFICATIONS................................................17
4INSTALLATION AND ASSEMBLY....................................................................20
5PLUMBING CONNECTION............................................................................23
6  ELECTRICAL CONNECTIONS .......................................................................26
7  INITIAL STARTUP....................................................................................27
8  MENU ITEMS AND OPERATION ...................................................................30
9SAFETY DEVICES AND ALARMS ....................................................................45
10MAINTENANCE AND CLEANING..................................................................50
11PROBLEMS/CAUSES/SOLUTIONS ................................................................56
12WIRING DIAGRAM ...................................................................................59

1
INTRODUCTION
Technical Dept. - All rights reserved - Reproduction is prohibited
DDear Customer,
Our boilers are designed and built in compliance with the European standard EN 303-5 (manual or automatic loading solid fuel
boilers). They also meet the essential requirements of directive 2006/95/EC (Low Voltage) and directive 2004/108/EC (Electromagnetic
Compatibility).
To get the best performance out of your boiler, we suggest you read the instructions in this manual carefully before
starting it up for the rst time.
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.
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.

2
1-WARNINGS AND WARRANTY TERMS
SAFETY PRECAUTIONS
• Installation, electrical connection, function test and maintenance must only be carried out by authorised and
qualied personnel.
• Install the product in accordance with all local and national legislation and regulations in force in the region or state.
• Only use the fuel recommended by the manufacturer. The product must not be used as an incinerator. It is strictly forbidden to use
liquid fuel.
• Do not put any fuel other than wood pellets in the hopper.
• The instructions provided in this manual must always be complied with to ensure the product and any electronic appliances
connected to it are used correctly and accidents are prevented.
• The user, or whoever is operating the product, must read and fully understand the contents of this installation guide before
performing any operation. Errors or incorrect settings can cause hazardous conditions and/or poor operation.
• Do not climb on or lean on the product.
• Do not put linen on the product to dry. Any drying racks or 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.). Therefore, avoid touching
these parts without wearing suitable protective clothing, such as heatproof gloves.
• It is forbidden to use the product with its door open.
• 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.
• Do not wash the product with water. The water could get inside the unit and damage the electrical insulation and cause electric
shocks.
• 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.
• 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.
• Evaluate the static conditions of the surface on which the weight of the product will stand and provide suitable insulation if it is
made of a ammable material.

3
1-WARNINGS AND WARRANTY TERMS
Technical Dept. - All rights reserved - Reproduction is prohibited
INFORMATION:
Please contact the retailer or qualied personnel authorised by the company to resolve a problem.
• You must only use the fuel specied by the manufacturer.
• Check and clean the smoke extraction pipes regularly (connection to the chimney).
• Always keep the cover of the fuel hopper closed.
• Store this installation and use manual with care as it must accompany the product for the duration of its useful life. If the product is
sold or transferred to another user, ensure the manual is also handed over.
INTENDED USE
The product only works with wood pellets and must be installed indoors.
WARRANTY CONDITIONS
The company guarantees the product, with the exception of elements subject to normal wear listed below, for a period of 2 (two)
years from the date of purchase attested by:
• a document to serve as proof of purchase (invoice and/or receipt) that shows the name of the vendor and the date on which the
purchase was made;
• forwarding of the completed certicate of guarantee within 8 days of purchase.
Furthermore, in order for the guarantee to be valid, the device must be installed and calibrated by qualied personnel, and where
necessary, the user must be issued with a declaration of conformity and correct functioning of the product.
We suggest performing the product function test before completing the ner calibrations.
Any installation that fails to comply with the regulations in force will invalidate the product guarantee, as will improper use or failure to
carry out the maintenance prescribed by the manufacturer.
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.
rmed at all or as indicated by the manufacturer.

4
1-WARNINGS AND WARRANTY TERMS
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 caused by the user continuing to operate the appliance even after the fault has been noticed
• any corrosion, incrustation or cracking caused by water ow, condensation, hardness or acidity of the water, improper de-scaling
treatments, lack of water, mud or limescale deposits
• ineciency of chimneys, ues or parts of the system aecting the appliance
• damage caused by tampering with the appliance, atmospheric agents, natural disasters, vandalism, electrical discharges, res.
• faults in the electric and/or hydraulic system.
Also excluded from this guarantee are:
• parts subject to normal wear such as seals, glass, claddings and cast iron grids, painted parts, handles and electric cables, bulbs,
indicator lights, knobs, all removable parts from the rebox.
• Chrome variations of painted parts.
• masonry work
• parts of the system not supplied by the manufacturer
Any technical interventions on the product to eliminate the defects mentioned above 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 the guarantee but as technical assistance to be granted as part of any eventual and specic agreed conditions and in
accordance with the fee applicable 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.

5
1-WARNINGS AND WARRANTY TERMS
Technical Dept. - All rights reserved - Reproduction is prohibited
SPARE PARTS
In the event of a malfunction, consult the retailer who will forward the call to theTechnical Assistance Service.
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 FORTHE CORRECT DISPOSAL OF THE PRODUCT.
The owner is the sole party responsible for demolishing and disposing of the product. This must be performed in compliance with laws
related to safety and environmental protection in force in his/her country.
At the end of its working life, the product must not be disposed of as urban waste.
It must be taken to a special dierentiated waste collection centre set up by the local authorities or to a retailer that provides this service.
Separating and recycling prevents potential negative eects on the environment and health (often caused by inappropriately disposing of
product parts). It also allows materials to be recovered in order to obtain signicant savings in energy and resources.

6
1-WARNINGS AND WARRANTY TERMS
RULES FOR INSTALLATION
The product is a boiler that uses wood pellets.
Below is a list of European regulations regarding the installation of the product:
EN 303-5:2012: Solid fuel boilers, with manual or automatic loading, nominal thermal power of 500 kW - Terminology, requisites, tests
and marking.
EN 12828 Heating systems design.
Electrical systems with rated voltage not exceeding 1000 V AC and 1500V 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 ues
EN 13384-1 Chimneys - Thermal and dynamic uid calculation methods - Part 1: Chimneys connected to a single appliance
Below are some applicable regulations for Italy:
UNI10683:2012Heatgeneratorsfuelledbywoodorothersolidbio-fuels-Test,installation,controland maintenance(forthermochemical
power at the rebox lower than 35kW)
UNI/TS 11278 general technical regulation for the choice of smoke duct/ue
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) air 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 re-ghting 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.
The Clean Air Act 1993 and Smoke Control Areas
Under the Clean Air Act local authorities may declare the whole or part of the district of the authority to be a smoke control area. It is
an oence to emit smoke from a chimney of a building, from a furnace or from any xed boiler if located in a designated smoke control
area. It is also an oence to acquire an“unauthorised fuel”for use within a smoke control area unless it is used in an“exempt”appliance
(“exempted”from the controls which generally apply in the smoke control area).
The Secretary of State for Environment, Food and Rural Aairs has powers under the Act to authorise smokeless fuels or exempt appliances
for use in smoke control areas in England. In Scotland andWales this power rests with Ministers in the devolved administrations for those
countries. Separate legislation, the Clean Air (Northern Ireland) Order 1981, applies in Northern Ireland. Therefore it is a requirement that
fuels burnt or obtained for use in smoke control areas have been “authorised” in Regulations and that appliances used to burn solid fuel
in those areas (other than“authorised” fuels) have been exempted by an Order made and signed by the Secretary of State or Minister in
the devolved administrations.
Further information on the requirements of the Clean Air Act can be found here : http://smokecontrol.defra.gov.uk/
Your local authority is responsible for implementing the Clean Air Act 1993 including designation and supervision of smoke control areas
and you can contact them for details of Clean Air Act requirements”
The Compact 35 has been recommended as suitable for use in smoke control areas when burning wood pellets in
accordance with class A1-A2 specied in the standard EN14961-2.

7
2-INSTALLATION INSTRUCTIONS
Technical Dept. - All rights reserved - Reproduction is prohibited
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 EN14961-2. These certications include, for example, ENPlus, DINplus, Ö-Norm M7135, and in particular, guarantee the
following characteristics:
• caloric value: 4.6 ÷ 5.3 kWh/kg.
• Water content: ≤ 10% of the weight.
• Percentage of ash: max 1.5% of the weight.
• Diameter: 6±1/8±1 mm.
• Length: ≤ 40 mm.
• Content: 100% untreated wood without the addition of binding substances (max 5% bark).
• Packaging: in sacks made from ecologically compatible or biologically decomposing material.
The company strongly recommends using certied fuel for its products (ENplus, DINplus, Ö-Norm M7135).
Poor quality pellets or others that do not comply with the characteristics specied previously may compromise the
operation of your product and can therefore render the guarantee and product liability invalid.
15 Kg BAGS OF FUEL

8
2-INSTALLATION INSTRUCTIONS
PRECAUTIONS REGARDING INSTALLATION
IMPORTANT!
Product installation and assembly must be carried out by qualied personnel.
The product must be installed in a suitable place that allows easy access for it to be opened regularly and for routine maintenance to be
performed.
The installation area must be:
• suitable to enable the appliance to operate correctly.
• Equipped with an adequate smoke extraction system.
• Equipped with adequate ventilation from outside.
• Equipped with 230V 50 Hz power supply with an EC compliant earthing system.
IMPORTANT!
The product must be connected to a chimney that expels the smoke at the highest point of the building.
The chimney must be of suitable dimensions, caulked, and tted with a condensation collector for collecting the
water vapour that can form due to the high performance of the appliance and the consequently low temperatures
of the outgoing fumes.
The chimney must comply with regulations in force.
The holes of the external air inlet and the smoke outlet pipe must be drilled before positioning the product.
THE OPERATING AREA
The boiler must be installed indoors in an area well protected from atmospheric elements.
The surface on which it stands and/or support points must have sucient load bearing capacity to support the total weight of the
appliance, its accessories and covers.
To ensure the appliance works well, we recommend installing the boiler detached from any walls or furniture, and with good air circulation
to allow eective ventilation for the appliance. The product should be located in an area that allows sucient space for normal use and
maintenance operations.
The volume of the room should be no less than 15 m3.
It is essential that an adequate outdoor air intake is provided that supplies the air for combustion needed for the product to function
correctly.
These air inlets must be arranged so that it is impossible for them to be obstructed.
Protect the inlets with grilles, metal mesh, etc., without reducing the net cross-section.
Remember that the ventilation grilles always have the useful cross-section in cm2indicated on one side. When
choosing the grille and size of the inlet, check that the useful cross-section of the grille is larger or equal to the
section required for product operation.
The ow of air between the outside and the room of installation may be direct, through an inlet in an external wall of the building; or
indirect, through the intake of air from rooms adjoining and connecting permanently with the room of installation. Adjoining areas may
not include sleeping areas, garages or general areas that present a re hazard.
For air ducts, up to 3m increase the cross-section by approximately 5%, while for ducts that run for longer increase it by 15%.
IMPORTANT!
The air ow can also be drawn from an adjoining room to that of the room where the product is installed, provided
the air can ow freely through permanent openings to the outside; avoid connection to sleeping areas and rooms
that present a re hazard in general.

9
2-INSTALLATION INSTRUCTIONS
Technical Dept. - All rights reserved - Reproduction is prohibited
POSITIONING AND RESTRICTIONS
In the case of simultaneous installation with other heating appliances, provide appropriate air inlets for each one (according to the
instructions of each product).
Installation of the product is not permitted:
• in rooms where there are liquid fuel appliances with continuous or intermittent operation that draw the
combustion air from the room they are installed in;
• in rooms where there are B-type gas heating appliances, with or without domestic hot water production and
interconnecting rooms;
• in rooms in which the decrease in pressure during use, as measured between the pressure outside and the
pressure in the room, is greater than 4 Pa.
The product may not be installed in rooms used as sleeping areas, bathrooms, garages or in rooms that present a
re hazard in general.
BOILER ROOM
Check that the room meets the requirements and provisions of the standards in force. There must also be a ow of at least enough air in
the room for normal combustion. Vents must be installed in the walls of the room that meet the following requirements:
• Increase the cross-section by at least 6 cm2for each 1 kW (859.64kcal/h) The minimum cross-section of the opening must not,
however, measure less than 100 cm. The cross-section can be calculated using the following relations:
S = K * Q ≥ 100 cm2
Where“S”is in cm2,“Q”in kW,“K”= 6 cm2/kW
• The opening must be located at the base of an external wall, preferably opposite the one with the outlet for combusted gases.
Heat-sensitive or ammable objects cannot be stored near the product; keep such objects at a minimum distance of
80 cm from the outermost point of the product.

10
min.3,5 metri
AT
(A)
AP
(B)
2-INSTALLATION INSTRUCTIONS
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
Have the eciency of the ue checked by an authorised technician.
Theue or chimneyisvital tothecorrect functioning of aforceddraft solid fuelheating appliance,giventhatboilers withhighperformance
have cooler fumes with consequently weaker draft and the possible formation of condensation.
It is therefore essential that the ue meets all construction standards and is always maintained in perfect condition.
A ue that serves a pellet/wood fuelled appliance must be at least categoryT400 (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 either case, ensure to include an inspection cap (AT) or inspection door (AP) and a
suitable device for collecting condensation - FIG.1.
It is prohibited to connect more than one wood/pellet or any other type of appliance (vent cowling...) to the same ue.
FIGURE 1  SMOKE FLUE

11
ABC
D
E
A
B
C
D
15° E
F
2-INSTALLATION INSTRUCTIONS
Technical Dept. - All rights reserved - Reproduction is prohibited
TECHNICAL CHARACTERISTICS
Flues serving a pellet/wood fuelled appliance must meet the following requirements:
• made of materials that are suciently resistant to mechanical stress, heat, the action of the products of combustion and their
vapours.
• made of materials that are impermeable to fumes, condensation, be thermally insulated and resistant to normal mechanical stress
over time
• go in a vertical direction and deviate no more than 45° from the vertical axis and be free of choke points
• be suited to the specic operating conditions of the product and have CE marking (EN1856-1, EN1443).
• Be of the correct size to suit the draft/smoke extraction requirements necessary for the product to work properly (EN13384-1)
• Be suitably caulked externally to avoid condensation and reduce the cooling of the smoke.
• Be at least category T400 (or greater if the appliance requires) and resistant to soot res.
We recommend in particular to check on the data tags of the ue (in accordance with EN1856-1, EN1443) the safety distances that must
be respected in presence of passing combustible materials and the type of insulating material to be used. These indications must be
followed rigorously to avoid serious harm to personnel and surrounding infrastructure.
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.
Smoke must be extracted through a single ue (see g. 3) with insulated steel tubes (A) or though an existing ue that complies with
the intended use (B). A simple air shaft in cement must be suitably lined. In either case, ensure to include an inspection cap (AT) and/or
inspection door (AP) and a suitable device for collecting condensation - FIG.1.
It is prohibited to connect more than one wood/pellet or any other type of appliance (vent cowling...) to the same ue.
FLAT ROOF
ROOF AT 15°
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
FIGURE 2
FIGURE 3

12
A
B
C
D
E
30°
F
A
B
D
60°
E
C
F
A
B
C
D
E
45°
F
2-INSTALLATION INSTRUCTIONS
ROOF AT 30°
ROOF AT 45°
ROOF AT 60°
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 4
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
FIGURE 6
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

13
2-INSTALLATION INSTRUCTIONS
Technical Dept. - All rights reserved - Reproduction is prohibited
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 a minimum Ø150mm.
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

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1
9
9
2
3
4
5
6
7
8
9
2-INSTALLATION INSTRUCTIONS
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 8
FIGURE 7

15
2-INSTALLATION INSTRUCTIONS
Technical Dept. - All rights reserved - Reproduction is prohibited
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 outlet of the appliance (Ø 100 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 ues of 100mm diameter and silicon seals or similar seals that can resist 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.

16
T
I
S
I
U
B
A
P
U
I
I
C
4
3
D
2
I
E
V
U
1
F
2-INSTALLATION INSTRUCTIONS
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 tube Ø150mm with the inclusion
of an external access door for chimney cleaning.
3. External ue made of insulated stainless steel tubes,
i.e. with double walls minimum Ø150mm: all securely
mounted to 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

17
3-DRAWINGS AND TECHNICAL SPECIFICATIONS
Technical Dept. - All rights reserved - Reproduction is prohibited
DRAWINGS AND CHARACTERISTICS
COMPACT 35 HYDRO DIMENSIONS (in cm)

18
3-DRAWINGS AND TECHNICAL SPECIFICATIONS
TECHNICAL CHARACTERISTICS COMPACT 35 HYDRO
Product class (EN 303-5:2012) 5
Nominal thermal power to rebox 34,5 kW (29670 kcal/h)
(Max) nominal output power: 32,0 kW (27520 kcal/h)
Minimum output power 8,1 kW (6966 kcal/h)
Eciency at Max 92,8%
Eciency at Min 90,0%
Temperature of exhaust smoke at Max 140°C
Temperature of exhaust smoke at Min 60,5°C
Maximum temperature that can be set 80°C
Maximum operating temperature 95°C
Particulate/OGC / Nox (10%O2) 23 mg/Nm3- 2 mg/Nm3 - 196 mg/Nm3
CO at 10% O2at Min and at Max 0,014 - 0,005%
CO2at Min and at Max 5,6 - 10,3%
Recommended draught at Max power 0.10 mbar - 10 Pa
Recommended draught at Min power 0.05 mbar - 5 Pa
Mass of smoke 21.5 g/sec
Hopper capacity 146 litres
Type of pellet fuel Pellet diameter 6-8 mm and size 5/30 mm
Pellet hourly consumption Min ~ 1.3 kg/h* - Max ~ 6.7 kg/h*
Autonomy At min ~ 80 h* - At max ~ 16 h*
Heatable volume m3 688/40 - 786/35 - 917/30**
Water content 30 litres
Maximum operating pressure 3 bar - 300 kPa
Combustion air inlet External diameter 80 mm
Smoke outlet External diameter 100 mm
Air inlet 100 cm2
Nominal electrical power (EN 60335-1). 190 W (Max 440 W)
Supply voltage and frequency 230Volt / 50 Hz
Net weight 300 kg
Weight with packaging 320 kg
* Data that may vary depending on the type of pellets used.
**Heatable volume based on the requested power per m3 (respectively 40-35-30 Kcal/h per m3)