Cadel aquos 24 h2O User manual

©2015 CADEL srl | All rights reserved – tutti i diritti riservati
en PELLET STOVE
installation, use and maintenance manual
aquos
24
h
2
o

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AQUOS 24 H2O
EN
Summary
1 INTRODUCTION .................................................... 3
1.1 REVISIONS TO THE PUBLICATION.....................3
1.2 CARE OF THE MANUAL AND HOW TO CONSULT IT ... 3
1.3 SYMBOLS USED IN THE MANUAL ..................... 3
2 WARNINGS AND WARRANTY TERMS................... 3
2.1 SAFETY PRECAUTIONS...................................... 3
2.2 INFORMATION:.................................................5
2.3 INTENDED USE...................................................5
3 WARRANTY CONDITIONS .................................... 5
3.1 SPARE PARTS..................................................... 6
4 WARNINGS FOR THE CORRECT DISPOSAL OF THE
PRODUCT ..................................................................... 6
4.1 RULES FOR INSTALLATION ............................... 6
4.2 SPECIFICATIONS FOR ITALY ............................. 7
5 INSTALLATION INSTRUCTIONS ............................. 7
5.1 PELLETS .............................................................. 7
5.2 PRECAUTIONS REGARDING INSTALLATION ... 8
5.3 THE OPERATING AREA ..................................... 8
5.4 POSITIONING AND RESTRICTIONS................... 8
5.5 MINIMUM DISTANCES ...................................... 9
5.6 CONNECTION OF THE SMOKE EXHAUST DUCT .... 9
5.7 INTRODUCTION ..............................................10
5.8 CHIMNEY FLUE................................................10
5.9 TECHNICAL FEATURES.................................... 11
5.10 MAINTENANCE..............................................12
5.11 CHIMNEY POT................................................ 12
5.12 CHIMNEY COMPONENTS ............................. 12
5.13 EXTERNAL AIR INLET....................................... 13
5.14 CHIMNEY FLUE CONNECTION ..................... 13
5.15 EXAMPLES OF CORRECT INSTALLATION...... 14
6 TECHNICAL DRAWINGS AND CHARACTERISTICS.... 16
6.1 DIMENSIONS ...................................................16
7 INSTALLATION AND ASSEMBLY ......................... 18
7.1 PREPARATION AND UNPACKING ................. 18
7.2 CERAMIC AND METAL SIDES INSERTION ...... 19
8 PLUMBING CONNECTION ................................. 20
8.1 PLUMBING CONNECTION ............................. 20
8.2 HYDRAULIC KIT ............................................... 20
8.3 SYSTEM WASHING .......................................... 22
8.4 SYSTEM FILLING............................................... 22
9 ELECTRICAL CONNECTIONS.............................. 24
9.1 GENERAL PRECAUTIONS ............................... 24
9.2 ELECTRICAL CONNECTION........................... 24
10 INITIAL START-UP ................................................ 24
10.1 GENERAL PRECAUTIONS .............................. 24
10.2 OPENING/CLOSING THE DOOR .................. 26
10.3 SETTINGS TO BE CARRIED OUT BEFORE THE
INITIAL START-UP..................................................... 26
10.4 LOADING THE PELLETS .................................. 26
10.5 DUCT FOR ADDITIONAL TANK (OPTIONAL).... 27
11 MENU ITEMS AND OPERATION .......................... 27
11.1 CONTROL PANEL DISPLAY ........................... 27
11.2 MAIN MENU................................................... 28
11.3
PROGRAMMED MODE (TIMER) - MAIN MENU.... 28
11.4 SLEEP FUNCTION (MAIN MENU)................... 29
11.5 ADJUSTMENTS MENU .................................... 29
11.6 SETTINGS MENU ............................................. 30
11.7 AUTO ECO MODE......................................... 32
11.8 SYSTEM CONFIGURATIONS .......................... 34
11.9 OPERATING MODE ....................................... 38
11.10 START-UP....................................................... 38
11.11 POWER OUTPUT ........................................... 38
12 SAFETY DEVICES AND ALARMS ......................... 38
12.1 SAFETY DEVICES ............................................ 38
12.2 PRESSURE SWITCH ......................................... 38
12.3 SMOKE TEMPERATURE PROBE ...................... 39
12.4 CONTACT THERMOSTAT IN THE FUEL HOPPER.... 39
12.5 CONTACT THERMOSTAT IN THE BOILER....... 39
12.6 WATER TEMPERATURE PROBE....................... 39
12.7 ELECTRICAL SAFETY....................................... 39
12.8 SMOKE FAN ................................................... 39
12.9 GEAR MOTOR ............................................... 39
12.10 TEMPORARY POWER CUT ........................... 39
12.11 FAILED START-UP .......................................... 39
12.12 ANTIFREEZE FUNCTION ................................ 39
12.13 PUMP ANTI-SEIZURE FUNCTION................... 39
12.14 ALARM ALERTS............................................. 39
12.15 ALARM RESET ............................................... 40
12.16 NORMAL SHUTDOWN (ON THE PANEL: OFF
WITH FLASHING FLAME) ........................................ 40
12.17 BLACKOUT WITH THE BOILER ON................ 40
12.18 BLACKOUT ABOVE 10” WITH BOILER IN
SHUTDOWN STAGE ................................................ 40
13 MAINTENANCE AND CLEANING....................... 41
13.1 DAILY OR WEEKLY CLEANING PERFORMED BY
THE USER ................................................................. 41
13.2 BEFORE EACH START-UP ............................... 41
13.3 CHECKS TO BE PERFORMED EVERY 2/3 DAYS.... 41
13.4 CLEANTHEEXCHANGER AND THE UNDERGRATE
SPACE EVERY 2/3 DAYS ........................................ 41
13.5 PERIODIC CLEANING PERFORMED BY A
QUALIFIED TECHNICIAN........................................ 42
13.6 CLEANING THE SMOKE EXHAUST SYSTEM AND
GENERAL CHECKS.................................................43
13.7 END-OF-SEASON SHUTDOWN...................... 43
13.8 CHECKING THE INTERNAL COMPONENTS.... 44
14 FAULTS/CAUSES/SOLUTIONS ............................. 45
14.1 CHECKING THE INTERNAL COMPONENTS.... 45
15 WIRING DIAGRAM ............................................. 47

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1 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).
1.1 REVISIONS TO THE PUBLICATION
The content of this manual is strictly technical and property of CADEL srl.
No part of this manual can be translated into another language and/or altered and/or reproduced, even
partially, in another form, by mechanical or electronic means, photocopied, recorded or similar, without prior
written approval from CADEL srl.
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.
1.2 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.
1.3 SYMBOLS USED IN THE MANUAL
ATTENTION:
carefully read and understand the relative message because failure to comply with what is
written can cause serious damage to the product and put the user’s safety 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 make adjustments.
MANUAL
carefully read this manual or the relative instructions.
2 WARNINGS AND WARRANTY TERMS
2.1 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.

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• 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 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.
• 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.
• 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 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 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

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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 after completing assembly.
• Disconnect the product from the 230V power supply before performing any
maintenance operation.
2.2 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.
• According to (EU) No. 305/2011 regulation, the " Declaration of Performance" is available online at the web
sites www.cadelsrl.com / www.free-point.it.
2.3 INTENDED USE
The product only works with wood pellets and must be installed indoors.
3 WARRANTY CONDITIONS
The company guarantees the product, with the exception of elements subject to normal wear listed below, for
a period of 2 (two) years from the date of purchase attested by:
• a document to serve as proof of purchase (invoice and/or receipt) that shows the name of the vendor and
the date on which the purchase was made;
• forwarding of the completed certicate of guarantee within 8 days of purchase.
Furthermore, the product must be installed and started by specialised personnel who must, where provided,
issue a declaration of conformity of the plant and of the proper functioning of the product, for the warranty to
be valid and effective.
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 Ofce.
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.
• Inefciency of chimneys, ues or parts of the plant affecting 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

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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.
3.1 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.
4 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 signicant
savings in energy and resources.
4.1 RULES FOR INSTALLATION
RULES FOR INSTALLATION
The product is a boiler that uses wood pellets.
Below is a list of the 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 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 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:
UNI 10683:2012 Heat generators fuelled by wood or other solid bio-fuels - Test, installation, control and maintenance
(for thermochemical 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.
UNI CTI 8065 WATER TREATMENT IN THERMAL PLANTS FOR CIVIL USE
The hydraulic circuit to which the boiler is connected must compulsorily provide a circulation pump sized to
ensure adequate ow of the heat carrying uid in any situation.

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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.
4.2 SPECIFICATIONS FOR ITALY
Fire-prevention standard: M.D. 28/04/2005 circ. no. 52 and of Ministry of Health 20/04/1982 point 5.1.
5 INSTALLATION INSTRUCTIONS
The requirements in this chapter 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
5.1 PELLETS
Wood pellets are manufactured by hot-extruding compressed sawdust which is produced during the processing
of natural dried wood (without paints). 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 diameter varies between 6 and 8 mm, with a standard length ranging from 5 to 30 mm. Good quality pellets
have a density that varies between 600 and over 750 kg/m3, with a moisture content that ranges from 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.
Fig. 1 - Pellet's bag
The poorer the quality of the fuel, the more often the internal parts of the brazier and
combustion chamber must be cleaned.
DINplus, Ö-Norm M7135 and Pellet gold are examples of the major quality certications of pellets in the European
market and guarantee that the following are complied with:
• caloric value: 4.9 kWh/kg.
• Water content: max 10% of the weight.
• Percentage of ash: max 0.5% of the weight.
• Diameter: 5 – 6 mm.
• Length: max 30 mm.
• Content: 100% untreated wood with no added binding agents (max percentage of bark: 5%).
• Packaging: in bags made from environmentally friendly or biologically decomposable material.
The company strongly recommends using certied fuel for its products (DINplus, Ö-Norm
M7135 or Pellet Gold).
Poor quality pellets or others that do not comply with that specied previously compromises
the operation of your product and can therefore render the warranty and product liability
null and void.

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5.2 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 for it to be regularly opened and routine maintenance to be
performed.
The site must be:
• compliant for proper operation.
• Equipped with an adequate smoke expulsion system.
• Equipped with ventilation intake from outside.
• Equipped with 230V 50 Hz power supply with an EC compliant earth system.
The product must be connected to a chimney or an internal or external vertical duct that complies with the
regulations in force. The product must be positioned in such a way that the electrical socket is accessible.
IMPORTANT!
The product must be connected to a chimney or a vertical duct that can expel the smoke
at the highest point of the building.
In any case smoke derives from combustion of types of wood and if it comes in contact with
or close to walls, these can become dirty. Moreover, utmost attention is required as they are
almost invisible but very hot and can cause burns. The holes of the external air inlet and the
smoke outlet pipe must be drilled before positioning the product.
5.3 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 suf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 effective ventilation for the appliance. The product should be located in
an area that allows suf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.
5.4 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).

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The product cannot be installed (except for sealed or closed operation appliances with
external ducted combustion air intake):
- in bedrooms or bathrooms;
- 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;
- where another heating appliance is installed without an independent air ow.
It is forbidden to place the product in an explosive atmosphere.
5.5 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 the distances
from ammable or heat-sensitive objects (sofas, furniture, wood panelling, etc..) as specied below. The front
distance from ammable 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 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.
Fig. 2 - Distances to follow
TYPE NON-FLAMMABLE WALLS FLAMMABLE WALLS
AQUOS 24 H2O A = 5 cm / B = 5 cm A = 10 cm / B = 10 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).
5.6 CONNECTION OF THE SMOKE EXHAUST DUCT
When making the hole for the passage of the smoke discharge pipe, one must take into account the possible
presence of ammable materials. If the hole must be made through a wooden wall or thermolabile material,
the INSTALLER MUST rst of all use the appropriate wall tting (minimum diameter 13 cm) and suitably insulate the
pipe of the product that passes through it using adequate insulating materials (1.3 - 5 cm thick with minimum
thermal conductivity 0.07 W/m°K).
The same minimum distance must be applied if the pipe of the product must pass through vertical or horizontal
sections near the thermolabile wall.
It is recommended to use an insulated double-wall pipe in external sections in order to prevent condensation
from forming.
The combustion chamber works in negative pressure.

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Fig. 3 - Rear view of a pellet stove (example)
5.7 INTRODUCTION
This chapter about the Chimney Flue has been drawn up in cooperation with Assocosma (www.assocosma.org)
and is based on European Standards (EN 15287 - EN 13384 - EN 1856 - EN 1443 - UNI 10683:2012).
It provides instructions for a good and correct execution of the chimney ue but it does not absolutely replace
the current standards which the qualied manufacturer/installer should comply with.
Please check with your local authorities if exists any restrictive regulation which regards the
combustible air inlet, the fumes exhaust system, the chimney ue and the chimney pot.
The company declines any responsibility regarding the bad running of the stove if it is due to the use of a no
correctly dimensioned chimney ue which does not respect current regulations.
5.8 CHIMNEY FLUE
Fig. 4 - Chimney Flues

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LEGEND Fig. 4 page 10
1Chimney ue with insulated stainless-steel pipes
2Chimney ue on the existing chimney
3Inspection plug
4Inspection door
5≥ 3,5 mt
• The chimney ue or chimney is of great importance for the correct running of the heating appliance.
• It is fundamental that the chimney ue is perfectly built and always maintained with a perfect efciency.
• The chimney ue must be sole (see Fig. 4 page 10) with insulated stainless-steel pipes (1) or installed on the
existing chimney ue (2).
• Both this solutions must be endowed with an inspection plug (3) and/or an inspection door (4).
5.9 TECHNICAL FEATURES
Fig. 5 - Inclined roof
LEGEND Fig. 5 page 11
1Height over the ridge of the roof = 0,5 mt
2Roof inclination ≥ 10°
390°
4Measured distance at 90° from the roof surface = 1,3 mt
• The chimney ue must be sealed from fumes.
• It must have a vertical run without narrowing. It must be realized with fume and condensation resistant
materials with thermal insulation and able to last against usual mechanical stresses.
It must be insulated to avoid condensation and to reduce fume cooling effects.
• The stove must be spaced out from fuels or ammable materials with an air gap or with insulating materials.
Check the distance with the chimney manufacturer.
• The chimney entrance must be placed in the same room where the appliance is installed or otherwise in
the adjacent room and it must be provided with a solid and condensation collection chamber under the
entrance, accessible through the sealed metal gate.
• Auxiliary exhaust fans cannot be installed neither along the chimney nor on the chimney pot.
• The inner section of the chimney ue can be round (the best one) or square and the jointed sides must have
a minimum radius of 20 mm.
• The section dimension must be:
•minimun Ø100 mm (for stoves up to 8.5 kw)
•minimun Ø120 mm (for stoves to 9 kw up)
• Made the efciency of the chimney ue overhauled by an expert stove-repairer and if necessary cover the
chimney ue with materials in compliance with current regulations.
• The ue system must be placed on the roof.
• The chimney ue must be provided CE in accordance with EN 1443 regulation. Please nd attached an
example of label:

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Fig. 6 - Example of label
5.10 MAINTENANCE
• The fumes extraction pipes (fumes conduit + chimney ue + chimney pot) must always be cleaned, scrubbed
and checked by an expert stove-repairer, in compliance with current regulations, with the instructions of the
stove-manufacturer and the directives of your insurance company.
• In case of doubts, please follow the most restrictive regulations.
• Have your chimney ue and chimney pot checked and cleaned by an expert chimney sweep at least once
a week. The chimney sweep has to release a written declaration about the security of the system.
• Not cleaning compromise safety.
5.11 CHIMNEY POT
Fig. 7 - Anti-wind chimney pots
The chimney pot is important for the correct running of the heating appliance:
• We recommend using an anti-wind chimney pot, see Fig. 7 page 12.
• The hole width for fumes exhaust must be the double of the chimney ue width and tted in a way that the
fume exhaust is assured also in case of wind.
• It should prevent the inltration of rain, snow and animals.
• The outlet height in the atmosphere must be away from the reux area caused by the roof structure or by
obstacles laying nearby (see Fig. 5 page 11).
5.12 CHIMNEY COMPONENTS
Fig. 8 - Chimney components

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LEGEND Fig. 8 page 12
1Chimney pot
2Fume outlet
3Chimney ue
4Termal insulation
5External wall
6Chimney union
7Fume pipe
8Heat generator
9Inspection door
10 T-union with inspection plug
5.13 EXTERNAL AIR INLET
Fig. 9 - Direct air inow Fig. 10 - Indirect air inow
LEGEND Fig. 9 page 13 - Fig. 10 page 13
1Room to ventilate
2Adjacent room
3External air inlet
4Cleft under the door
• The room must be endowed with an external air recycling for a good climate in your ambient.
• The air inow from outside to the inner occurs directly, through an opening on the external wall of the room
(see Fig. 9 page 13); otherwise it occurs indirectly by air suction from rooms adjacent to the one to ventilate
(see Fig. 10 page 13).
• Bedrooms, garages, and store of ammable materials are excluded.
• The air inlet should have a total net surface of 80 sqcm2: the aforesaid surface is to widen if inside the room
there are other activated appliances (for example: electric ventilators for foul air suction, cooker hoods, other
stoves, etc...) which depress the environment.
• At switched on appliance it is necessary to check that the pressure fall between the room and the outside
does not exceed 4,0 Pa value: if necessary widen the air inlet (EN 13384).
• The air inlet must be realized at a height close to the oor with an external grid against birds. In such a way it
cannot be obstructed by any object.
• In case of installation with sealed-chamber the air inlet is not necessary.
5.14 CHIMNEY FLUE CONNECTION
Your pellet stove works through a fume draught forced by a fan. It is obligatory to check that all pipes are
realized in compliance with the following regulation on material selection: EN 1856-1, EN 1856-2 e UNI/TS 11278.
All must be effected by specialized personnel or companies as provided by UNI 10683:2012.
• The connection between the appliance and the chimney ue should be short in order to favor the draught
and to avoid condensation in the pipes.
• The fume conduit should be equivalent or longer than the outlet joint ones (Ø 80 mm).
• Some stove models are endowed with a lateral and/or back exhaust. Check that the unused exhaust is
sealed with the plug given with standard equipment.
SYSTEM TYPE Ø80 mm PIPE Ø100 mm PIPE
Minimum vertical length 1,5 mt 2 mt
Maximum length (with 1 union) 6,5 mt 10 mt
Maximum length (with 3 unions) 4,5 mt 8 mt

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SYSTEM TYPE Ø80 mm PIPE Ø100 mm PIPE
Maximum number of unions 3 3
Level section (minimum inclination 3%) 2 mt 2 mt
Installation at a height above 1200 m a.s.l. NO Obligatory
• Use a plate pipe for stoves of Ø80 mm or Ø100 mm depending on the type of system and with silicone gaskets.
• It is forbidden to use metal, bre cement or aluminium exible pipes.
• For change of direction it is obligatory always to use a union (with angle > 90°) with inspection plug which
enables an easy periodic cleaning of the pipes.
• Please assure you that after the cleaning the inspection plugs are sealed with its efcient gasket.
• It is forbidden to connect more appliances to the same fume conduit.
• It is forbidden to convey in the same fume conduit exhausts from overhanging cooker hoods.
• It is forbidden to exhaust ue gases directly from the wall towards the outside and closed spaces also at open top.
• It is forbidden to connect any other appliance (wood stoves, cooker hoods, boilers, etc...).
• The fume conduit must be placed at a distance of minimum 500 mm from ammable or heat-susceptible components.
5.15 EXAMPLES OF CORRECT INSTALLATION
Fig. 11 - Example 1
LEGEND Fig. 11 page 14
1Insulating material
2Reduction from Ø100 to Ø80 mm
3Inspection plug
4Minimum safety distance = 0,5 mt
• Chimney ue installation Ø100/120 mm with an enlarged drilling for pipe transit.
Fig. 12 - Example 2

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LEGEND Fig. 12 page 14
1Insulating material
2Inspection plug
3Chimney inspection entrance
4Minimum safety distance = 0,5 mt
5Inclination ≥ 3°
6Level section ≤ 1 mt
• Old chimney ue with an inserted pipe of minimum Ø100/120 mm and with an external door which enables
the chimney cleaning.
Fig. 13 - Example 3
LEGEND Fig. 13 page 15
1Insulating material
2Inspection plug
3Minimum safety distance = 0,5 mt
• External chimney ue entirely made up of insulated stainless steel pipes, i.e. with double wall of minimum
Ø100/120 mm: all must be rmly attached to the wall. For chimney against wind effects please (see Fig. 7
page 12).
• Ducting system through T-unions which enables an easy cleaning without disassembling the pipes.
We recommend to check with your chimney ue manufacturer the safety distances which
must be respected and the type of insulating material. The aforesaid regulations are valid
also for holes made on the wall (EN 13501 - EN 13063 - EN 1856 - EN 1806 - EN 15827).

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6 TECHNICAL DRAWINGS AND CHARACTERISTICS
6.1 DIMENSIONS
Fig. 14 - Aquos 24 H2O dimensions

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TECHNICAL CHARACTERISTICS AQUOS 24 H2O
Nominal output power:: 24,8 kW (21328 kcal/h)
Nominal output power (water):: 22,7 kW (19522 kcal/h)
Minimum output power: 6,0 kW (5160 kcal/h)
Minimum output power (water): 5,0 kW (4300 kcal/h)
Efciency at Max 91.6%
Efciency at Min 95.1%
Temperature of exhaust smoke at Max 120 °C
Temperature of exhaust smoke at Min 70 °C
Particulate/OGC / Nox (13%O2) 7,2 mg/Nm3- 5.4 mg/Nm3- 138 mg/Nm3(13% O2)
CO at 13% O2at Min and at Max 0,024% – 0,008%
CO2at Min and at Max 5,8% - 9,5%
Permissible max. water pressure 2,5 bar (250 kPa)
Recommended draught at Max power 0,10 mbar - 10 Pa***
Recommended draught at Min power 0,0 mbar - 0 Pa
Mass of smoke 17,1 g/sec
Hopper capacity 106 litri
Type of pellet fuel Pellet diameter 6-8 mm and size 3/40 mm
Pellet hourly consumption Min ~ 1.2 kg/h* - Max ~ 5.2 kg/h*
Autonomy At min ~ 60 h* - At max ~ 14 h*
Heatable volume m3533/40 – 609/35 – 711/30 **
Combustion air inlet External diameter 80 mm
Smoke outlet External diameter 100 mm
Air intlet 80 cm2
Rated electrical power (EN 60335-1) 120 W (Max 430 W)
Supply voltage and frequency 230 Volt / 50 Hz
Net weight 210 kg
Weight with packaging 230 kg
Distance from combustible material (rear) 100 mm
Distance from combustible material (sides) 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 (EU 305/2011).

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7 INSTALLATION AND ASSEMBLY
7.1 PREPARATION AND UNPACKING
Fig. 15 - Removing the package screws Fig. 16 - Hook for handling
The stove is supplied complete with all its electrical and mechanical components and factory-tested:
Open the package and remove the two screws between the bracket and the stove that fasten the bracket to
the pallet (Fig. 15 page 18).
Set the stove in the pre-selected place, making sure this complies with the requirements. The stove body or unit
must always be kept in a vertical position when handled and moved by using carts only. Pay particular attention
that its door and its glass are protected from knocks that might compromise their integrity.
Always handle the product with care. If possible, unpack the stove near the chosen place of installation. The
materials that make up the packaging are neither toxic nor harmful, and so require no particular disposal
measures.
The product, as shown in Fig. 16 page 18, is equipped with a hook to ease handling.
After removing the packaging make sure that the stove is complete and not damaged:
if in doubt contact the dealer.
The product packaging contains the following documents:
• Instructions booklet
• Annex G - Technical inspection report for heat system with heat output below 35 kW.
• Warranty
Therefore, the end user is responsible for product storage, disposal or possible recycling in compliance with the
relative applicable laws. Position the product without its cladding and connect it to the chimney. Once the
connections are complete, assemble the cladding (steel sides).
If the product must be connected to an exhaust pipe that goes through the rear wall (to enter the chimney),
make sure not to force it in.
Adjust the 4 feet (J) to level the stove so that the smoke exhaust and the pipe are coaxial. The ceramic sides must
not be tted when the feet are adjusted as this is carried out inside the cladding.
Attention!!
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.

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Fig. 17 - 1. Turn the feet clockwise to lower the product.
7.2 CERAMIC AND METAL SIDES INSERTION
Remove, on the upper part, the metal top (A).
Take the ceramic sides (B) or the metal side (B1) from the box and insert them onto the prole (C) in correspondence
of the guide, from the top downwards.
Repeat the same operation for both sides.
Reposition the metal top.
Fig. 18 - Sides insertion
We recommend using small velcro felt disks, to be applied to the ends of the ceramics to
prevent contact between them.
We recommend inserting the ceramics when installation of the stove is complete.

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8 PLUMBING CONNECTION
8.1 PLUMBING CONNECTION
IMPORTANT!
If installation of the product involves interaction with another, pre-existing system complete
with heating equipment (gas boiler, methane boiler, diesel boiler, etc.), contact qualied
personnel, who subsequently will be responsible for conformity of the system in compliance
with the applicable law in force.
The Company declines all responsibility for damage to persons or things in the event of
failed or incorrect operation, if the aforementioned warnings are not complied with.
Fig. 19 - Plumbing connection
LEGEND
1OUTLET
2SAFETY VALVE
3FILLING
41/2”G MALE DOMESTIC WATER OUTLET
51/2”G MALE DOMESTIC WATER INLET
63/4”G MALE HEATING RETURN
73/4”G MALE HEATING DELIVERY
Make the connections to the corresponding ttings shown in the diagram above. Make sure the pipes are not
placed under tension or undersized.
IMPORTANT!!!
FLUSH THE ENTIRE SYSTEM BEFORE CONNECTING THE BOILER IN ORDER TO REMOVE RESIDUES
AND DEPOSITS.
Always install gate valves upstream from the boiler 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 boiler using hoses so that the boiler is not too strictly connected to the system,
and to allow slight movements.
8.2 HYDRAULIC KIT
The boiler is equipped with a complete kit for the production of domestic water made up of:
• Plate heat exchanger
• A 3-way diverter valve
• Flow switch