Ferlux FLORA 7 User manual

Quality of Life
MANUAL FOR THE USER AND
INSTALLATION
AIR RANGE
COD. 0153 R2 INGLÉS

2

3
We thank you for choosing us
The Ferlux wood pellet replace is a heating system that has been manufactured with the most advanced
technology and a high level of quality, which allows you to enjoy the extraordinary feeling of a re in total
safety.
• We would ask you to read this manual closely because it contains important instructions regarding safety
for installation, use, and maintenance.
• This manual, along with the documentation supplied, must be kept in a place that is easy and quick to
access.
• Installation of FERLUX air heaters must be performed solely by authorised personnel who follow the
instructions from the manufacturer and in accordance with any regulations in force.
• The manufacturer is not responsible for any possible damage that could be caused by the incorrect
installation of handling of the unit.

4
indice
1. TAKING CARE OF THE MANUAL AND HOW TO CONSULT IT........................................................................................6
2. GENERAL WARNINGS AND SAFETY...........................................................................................................................7
2.1. LEGAL WARRANTY..............................................................................................................................................8
2.2. TECHNICAL ASSISTANCE...................................................................................................................................8
2.3. SPARE PARTS......................................................................................................................................................8
3. TECHNICAL INFORMATION...............................................................................................................................................9
4. FUEL...............................................................................................................................................................15
4.1. WHAT ARE WOOD PELLETS?..........................................................................................................................15
4.2. PROPERTIES OF WOOD PELLETS..................................................................................................................15
4.3. STORAGE OF WOOD PELLETS...................................................................................................................16
5. INSTRUCTIONS FOR INSTALLATION...........................................................................................................................16
5.1. UNPACKING....................................................................................................................................16
5.2. PREVENTION OF DOMESTIC FIRES.............................................................................................................16
5.2.1. PROTECTING THE FLOOR.......................................................................................................17
5.2.2. MINIMUM SAFETY DISTANCES................................................................................................17
5.2.3. MEASUREMENTS TO PIERCE BUILDING ENVELOPES.........................................................18
5.3. SMOKE DUCTING OR CHIMNEY...................................................................................................................18
5.3.1. GENERAL BACKGROUND..........................................................................................................18
5.3.2. CALCULATING THE EXHAUST SMOKE DUCTING............................................................19
5.3.3. INSTALLATION IN TRADITIONAL-TYPE CHIMNEY............................................................20
5.3.4. EXTERIOR STRETCH OF THE CHIMNEY..............................................................................20
5.3.5. CAPPING SMOKE OUTLETS..................................................................................................21
5.4. VENTILATION AND AIR INTAKE..................................................................................................................21
5.5. ELECTRICAL CONNECTION.............................................................................................................................22
6. INSTRUCTIONS WHEN USING THE CONTROL PANEL............................................................................................22
6.1. MENÚ LEVEL 1...................................................................................................................................................24
6.1.1. INFORMATION..............................................................................................................................24
6.1.2. REGULATION THE POWER........................................................................................................24
6.1.3. REGULATION DE ROOM TEMPERATURE.............................................................................24
6.1.4. RESET ERRORS, TURNING THE HEATER ON AND OFF................................................25
6.1.5. LOADING THE PELLET SCREW.................................................................................................25
6.2. MENÚ LEVEL 2....................................................................................................................................................26
6.2.1. [rAir] REGULATION OF THE FAN.............................................................................................26
6.2.2. [Cron] PROGRAMMING SCHEDULES........................................................................................26
6.2.3. [oroL] CLOCK................................................................................................................................30
6.2.4. [tELE] REMOTE CONTROL..........................................................................................................30

5
6.2.5. [rCLr] TECHNICAL MENU 1..........................................................................................................31
6.2.6. [tPAr] TECHNICAL MENU 2...........................................................................................................31
7. USE AND FUNCTIONALITY OF THE HEATER..........................................................................................................32
7.1. ADVICE AND CAUTIONS..................................................................................................................................32
7.2. FIRST LIGHTING................................................................................................................................................32
7.3. STATES OF FUNCTIONALITY..........................................................................................................................33
7.3.1. LIGHTING............................................................................................................................33
7.3.2. NORMAL HEATER OPERATION.................................................................................................33
7.3.3. HEATER OFF................................................................................................................................34
7.3.4. MODULATION (“MOD”).................................................................................................................34
7.3.5. STANDBY........................................................................................................................................34
7.3.6. OFF...................................................................................................................................34
7.3.7. RECOVERY OF THE IGNITION (“REC”).............................................................................35
8. MAINTENANCE AND CLEANING..................................................................................................................................35
8.1. CLEANING THE BRAZIER AND BRAZIER HOLDER............................................................................36
8.2. CLEANING THE ASH DRAWER...................................................................................................................37
8.3. CLEANING THE HEAT EXCHANGER...........................................................................................................37
8.4. CLEANING THE INTERIOR OF THE COMBUSTION CHAMBER...............................................................38
8.5. CLEANING THE GLASS......................................................................................................................................38
9. PROBLEMS, MESSAGES, ERRORS, AND SOLUTIONS............................................................................................39
9.1. PROBLEMS..........................................................................................................................39
9.2. MESSAGES...............................................................................................................................40
9.3. ERRORS AND SOLUTIONS.............................................................................................................................41

6
1. TAKING CARE OF THE MANUAL AND HOW TO CONSULT
IT
Keep this manual safe and store it in an accessible location close to the unit.
In the event that this manual is lost or becomes di󰀩cult to read, ask the installer for a copy or enquire directly with the
manufacturer, specifying the identifying details of the product.
The proper functioning of the heater depends, to a great extent, on the user knowing how it works and knowing what to do at
all times. This manual has a contents page on pages four and ve so that you can easily nd the section to consult to resolve
any questions or issues that may arise.
When you read or consult this manual, you must take the following into account:
It is important to pay special attention to the texts written in ‘bold’
In some cases, capital letters may be used and/or the size of the font will be increased in order to draw your attention
to the paragraph.
The text in ‘italics’ is used when the issue being handled mentions other paragraphs in this same manual, or for
eventual clarications.
In some cases, two or more of the styles above could be combined. This would be the case when we refer to the
reading of other chapters in order to supplement or refer to information.
Example: (see chapter ‘7. USE AND FUNCTIONALITY OF THE HEATER’)
SYMBOLS

7
2. GENERAL WARNINGS AND SAFETY
The installation must be carried out by an authorised person who must provide the purchaser with a declaration for the
installation in which they accept full responsibility for the nal installation.
In the same way, the product must be started up by an authorised person who must provide the purchaser with a product start-
up document in which they accept full responsibility for the nal installation and operation of the installed unit.
FERLUX shall not bear any responsibility in the event that these precautions are shown to have not been met.
All national and local regulations, as well as European regulations, must be satised when the unit is being installed. All national
and local regulations, as well as European regulations, must be satised when the unit is operational.
FERLUX S.A. accepts no responsibility in the event of the aforementioned requirements failing to be met.
Our units are manufactured and tested, with all their parts being monitored, in line with the safety directives of the European
Union, which aim to protect both the user as well as the installer against possible accidents. Technical personnel are strongly
urged to pay close attention to the connections, wiring, and electrical voltage when they are required to perform any kind of
operation on the unit.
The manufacturer is not liable for any responsibility, whether contractual or extra-contractual, for damages caused to persons,
animals, or objects due to errors in the installation, conguration, and/or maintenance.
This heater must only be used for the purpose for which it was specically designed.
Certain extreme weather conditions, such as strong winds, hail, or the risk of frost, could mean that the chimney ue is
insu󰀩cient. Due to the potential risk of back-pu󰀩ng smoke, use of the unit in these circumstances is not recommended. This
cannot be considered as a defect in the unit or as unsatisfactory functionality.
For your safety, you must bear in mind that:
• The user of the heater must be a responsible adult. This unit has not been designed to be used by people whose
physical, sensorial, or cognitive capabilities are limited or who have no experience or expertise in the matter. Children
must be watched closely and taught how to behave in order to guarantee that they do not play with the unit or come into
contact with surfaces that are hot when in operation.
• The connection to the power supply and its corresponding power outlet must be easily accessible at all times. It is
absolutely prohibited to make the unit operate with a damaged power cable. If the power cable is damaged, it must be
immediately replaced.
• Do not disconnect the plug from the power outlet when the unit is turned on.
• The door on the heater must always remain closed when the heater is in operation.
• Avoid coming into contact with areas of the unit that reach a high temperature when in operation, especially with the
glass and the door.
• Following an extended period of disuse, before turning the unit on, check that there are no obstructions in the smoke
extraction ducting 1.
________________________________________
1 In extreme cases or breakdown, safety systems may intervene. In this case, contact the Technical Support Service. DO
NOT DEACTIVATE THE SAFETY SYSTEMS.

8
2.1 LEGAL WARRANTY
In order to be able to enjoy the legal warranty in accordance with EEC Directive 1994/44EC, a user must fully comply
with all of the instructions contained in this manual, and especially:
• Must always act within the limits of use of the heater.
• Must always perform ongoing and thorough maintenance.
• Must authorise the use of the heater only to persons of proven capacity, attitude, and who are properly trained for
such a task.
The manufacturer accepts no responsibility, legal or penal, directly or indirectly, for:
• An installation that is not in full compliance with the regulations in force in the country as well as safety directives.
• Non-compliance on the part of unqualied and/or untrained personnel.
• Usage not in compliance with safety directives.
• Modications and repairs not authorised by the Manufacturer and made to the unit.
• Use of spare parts that are not original or are not specied for that specic model of heater.
• Insu󰀩cient maintenance.
• Exceptional circumstances.
2.2 TECHNICAL ASSISTANCE
FERLUX is capable or providing a solution to any technical problem regarding the use and maintenance of the unit at any
point during its operational life.
2.3 SPARE PARTS
Only use original spare parts.
Do not wait for parts to be damaged before proceeding to replace them. Replacing a worn component before it breaks helps
prevent accidents caused by the sudden breaking of these components, which could cause harm to people or objects.
¡¡¡ATENTION!!!
THE INSTALLATION MUST BE CARRIED OUT BY AN AUTHORISED PERSON WHO MUST PROVIDE
THE PURCHASER WITH A DECLARATION OF CONFORMITY FOR THE INSTALLATION IN WHICH THEY
ACCEPT FULL RESPONSIBILITY FOR THE FINAL INSTALLATION AND, CONSEQUENTLY, THE PROPER
OPERATION OF THE INSTALLED UNIT. FERLUX SHALL NOT BEAR ANY RESPONSIBILITY IN THE EVENT
THAT THESE PRECAUTIONS ARE SHOWN TO HAVE NOT BEEN MET.

9
3. TECHNICAL DATA
The data plate or label is located on the rear part of the unit and shows all the characteristic data for the unit, including the
details of the manufacturer, the serial number, and the CE marking.
A label that is missing or obscured makes the tasks of installing and repairing the unit more di󰀩cult because it may not be
possible to identify the product. In the event of it becoming damaged, request a copy from the Technical Support Service.
PROPERTIES FLORA 7 FLORA 8 NEREA 8 NEREA 10 AROA 8 AROA 10 NATALIA 10
Weight Kg. 95 95 110 110 110 110 110
Height mm 917 917 985 985 1053 1053 982
Width mm 458 458 450 450 460 460 452
Depth mm 499 499 497 497 498 498 498
Diameter of smoke outlet mm 80 80 80 80 80 80 80
Diameter of primary air inlet mm 40 40 40 40 40 40 40
Heatable volume m3150 195 195 245 195 245 245
Maximum useful thermal power kW 7,2 7,9 7,9 10 7,9 10 10
Maximum performance %90 88 88 87 88 87 87
Minimum useful thermal power kW 3,7 3,7 3,7 4,3 3,7 4,3 4,3
Minimum performance %92 92 92 90 92 90 90
Minimum hourly fuel consumption kg/h 0,83 0,83 0,83 0,90 0,83 0,90 0,90
Maximum hourly fuel consumption kg/h 1,66 1,85 1,85 2,20 1,85 2,20 2,20
Tank capacity kg 17 17 22 22 22 22 22
Fuel PELLET
Recommended chimney ue Pa 10-12 10-12 10-12 10-12 10-12 10-12 10-12
Nominal electrical power turned on W300 300 300 300 300 300 300
Nominal electrical power (power 1-5) W60 60 60 60 60 60 60
Nominal voltage V 220-240 220-240 220-240 220-240 220-240 220-240 220-240
Nominal frequency Hz 50 50 50 50 50 50 50
Average temperature of gases at N.T.P. * ºC 145 168 168 208 168 208 208
Average temperature of gases at R.T.P. ** ºC 97 97 97 113 97 113 113
Average concentration of CO2 at N.T.P. * %8,17 8,58 8,58 10,55 8,58 10,55 10,55
Average concentration of CO2 at R.T.P. ** %8,01 8,01 8,01 5,52 8,01 5,52 5,52
Mass ow rate of smoke at N.T.P. * %6,6 7 7 7,95 7 7,95 7,95
Mass ow rate of smoke at R.T.P. ** %3,4 3,4 3,4 15,49 3,4 15,49 15,49
CO concentration 13% O2 at N.T.P. * %0,04 0,03 0,03 0,03 0,03 0,03 0,03
CO concentration 13% O2 at R.T.P. ** %0,04 0,04 0,04 0,04 0,04 0,04 0,04
* P.T.N. _________________Potencia térmica nominal
** P.T.R. _________________Potencia térmica reducida

10
PROPERTIES LUNA 8 LUNA 10 NEREA 12 NEREA 15 ESTELA 12 ESTELA 15 GÉNESIS 6 GÉNESIS 8
Weight kg. 110 110 132 132 132 132 120 120
Height mm 1121 1121 1101 1101 1101 1101 1086 1086
Width mm 606 606 514 514 520 520 897 897
Depth mm 504 504 541 541 542 542 295 295
Diameter of smoke outlet mm 80 80 80 80 80 80 80 80
Diameter of primary air inlet mm 40 40 60 60 60 60 60 60
Heatable volume m3195 245 325 375 325 375 150 210
Maximum useful thermal power kW 7,9 10 12 15,3 12 15,3 6 8
Maximum performance %88 87 86 86 86 86 90 87
Minimum useful thermal power kW 3,7 4,3 8,9 8,9 8,9 8,9 2,9 2,9
Minimum performance %92 90 86 86 86 86 94 94
Minimum hourly fuel consumption kg/h 0,83 0,90 1,9 1,9 1,9 1,9 0,6 0,6
Maximum hourly fuel consumption kg/h 1,85 2,20 2,5 3,3 2,5 3,3 1,3 1,3
Tank capacity kg 22 22 30 30 30 30 20 20
Fuel PELLET
Recommended chimney ue Pa 10-12 10-12 10-12 10-12 10-12 10-12 10-12 10-12
Nominal electrical power turned on W300 300 300 300 300 300 300 300
Nominal electrical power (power 1-5) W60 60 60 60 60 60 60 60
Nominal voltage V 220-240 220-240 220-240 220-240 220-240 220-240 220-240 220-240
Nominal frequency Hz 50 50 50 50 50 50 50 50
Average temperature of gases at
N.T.P. * ºC 168 208 212 237 212 237 124 158
Average temperature of gases at
R.T.P. ** ºC 97 113 184 184 184 184 78 78
Average concentration of CO2 at
N.T.P. * %8,58 10,55 9,29 10,55 9,29 10,55 7,46 7,37
Average concentration of CO2 at
R.T.P. ** %8,01 5,52 7,69 7,69 7,69 7,69 7,40 7,40
Mass ow rate of smoke at N.T.P. * %7 7,95 9,17 10,3 9,17 10,3 - -
Mass ow rate of smoke at R.T.P. ** %3,4 15,49 23,5 23,5 23,5 23,5 - -
CO concentration 13% O2 at N.T.P. * %0,03 0,03 0,03 0,04 0,03 0,04 0,03 0,02
CO concentration 13% O2 at R.T.P. ** %0,04 0,04 0,03 0,03 0,03 0,03 0,04 0,04
* P.T.N. _________________Potencia térmica nominal
** P.T.R. _________________Potencia térmica reducida

11
MODEL FLORA 7/8 kW
MODEL NEREA 8/10 kW

12
MODEL NATALIA 10 kW
MODEL AROA 8/10 kW

13
MODEL NEREA 12/15 kW
MODEL LUNA 8/10 kW

14
MODEL ESTELA 12/15 kW
MODEL GÉNESIS 6/8 kW

15
4. FUEL
The FERLUX wood pellet heater has been designed to burn wood pellets that comply with the requirements established
in Regulation UNE-EN ISO 17225:2014 regarding Solid biofuels and in Regulation ONORM M 7135.
4.1 WHAT ARE WOOD PELLETS?
Wood pellets are a combustible fuel that are made by pressing natural dry sawdust. The sawdust is easily compacted and
the lignin of the material itself acts as a binder, meaning that no glue or other substance is required. This process lends them
a shiny appearance, as though they had been varnished, and makes them denser.
They are very small cylinders that measure just a few millimetres in diameter. Their level of humidity is very low and,
furthermore, they require little storage space (in order to produce the same amount of heat, around three times less volume
of wood pellets is required when compared to rewood).
4.2 PROPERTIES OF WOOD PELLETS
There are various types of wood pellet on the market and they are of varying quality and have di󰀨erent characteristics in
their manufacturing processes and types of wood used.
As was stated previously, this heater is designed to operate with DINplus size wood pellets (marking obtained according to
Austrian regulation Onorm M 7135) and ENplus (marking obtained according to Regulation UNE-EN ISO 17225-2:2004).
The main requirements of these aforementioned regulations are:
Characteristics of the wood pellet according to DINplus and ENplus regulations
Requirement Unit of measurement DINplus ENplus
Diameter mm 4 ≤ D < 10 D06: 6 ±1
D08: 8 ± 1
Length mm ≤ 5 x D 3,15 ≤ L ≤ 40
Lower caloric value MJ/kg (b.h) Q ≥ 18 (MJ/kg en b.s.) 16,5 ≤ Q ≤ 19
Humidity % (b.h) ≤ 10
Ash % (b.s) ≤ 0,5 ≤ 0,7
A wood pellet that has gained certication under either of these two regulations is the best way to assure the proper
functioning of the FERLUX wood pellet heater.
If the wood pellet does not come suitably marked, the appropriate certicate must be requested.
If faced with an unidentied wood pellet, or one which, due to a variety of circumstances, could be deemed to have di󰀨erent
characteristics, there are a series of criteria that can be applied to judge whether or not it is suitable for use, for which you
should be guided by the following advice:
• DO NOT USE pellets with di󰀨erent dimensions than those stated in the previous table.
• DO NOT USE pellets that show coloured grains that do belong to the wood or which are excessively dark.
• DO NOT USE damp pellets.
• DO NOT USE pellets that contain mixed sawdust, resins, or chemical substances, binders, or additives.
The use of unsuitable fuels causes:
• The build-up of pellets in the brazier.
• Dirtiness in the brazier and smoke evacuation ducting.
• Poor combustion.
• Dirty glass.
• Reduction in the performance of the unit.
• Increased consumption of pellets.
• Normal operation of the heater not to be guaranteed.
• Needing to perform more frequent cleaning and maintenance of the heater.

16
5. INSTRUCTIONS FOR INSTALLATION
The installation of FERLUX wood pellet heaters must be performed solely by qualied personnel who follow the
instructions from the manufacturer and in accordance with any and all regulations in force that may be applicable.
Failing this, FERLUX is not responsible in the event of any accident.
It is important to choose the location of the heater in such a way that the path to the vertical connection of the smoke outlet is
as short as possible.
Both the unit as well as any ducting for smoke are liable to reach high temperatures, meaning that it is essential to follow the
instructions from the manufacturer in order to prevent res and hazardous situations. (See section 5.2 PREVENTION OF
DOMESTIC FIRES).
It is also important to take into account the supply of air for combustion, as well as how to maintain suitable atmospheric
conditions inside the enclosure. (See section 5.4 VENTILATION AND AIR INTAKE).
5.1 UNPACKING
In order to unpack the product, cut the strap around the packing, making sure not to scratch or damage it. Remove the
cardboard and the plastic protector, then remove the lower pallet that the heater comes screwed to.
Open the tank for the wood pellets, where you will nd the instruction manual and the power supply cable. Cut the tie that
is holding the room temperature sensor to the rear of the unit and attach it in a suitable position so that it can take proper
measurements of the exterior temperature. Following this, connect the power supply cable to the rear part of the heater and
activate the safety on device to the rear.
5.2 PREVENTION OF DOMESTIC FIRES
• The instructions of the manufacturer must be followed, both for the installation as well as the use of the heater and
any safety rules and regulations that apply to it must also be met. Failing this, FERLUX is not responsible in the
event of any accident occurring.
• It is recommended that any combustible or ammable items be removed away from the source of heat (at least 1.5
m away), such as wooden beams, furniture, curtains, ammable liquids, etc. A protective layer of insulating and
non-ammable material must be positioned in the area of the source of heat where there are claddings that are
ammable or sensitive to heat.
• It is necessary to carry out regular cleaning of the heater and of the smoke ducting, since soot and other accumulated
combustion residue could end up entering the combustion area.
• In the event that the chimney catches re, use the appropriate re extinguishing systems to put out the re or call
the re service for their intervention.
4.3 STORAGE OF WOOD PELLETS
In order to guarantee problem-free combustion, it is necessary to store the wood pellets in a location that is dry and not too
cold. Damp and/or cold wood pellets reduce the power and performance of the fuel and will require the brazier, replace,
and chimney to be more thoroughly cleaned.
Take special care when storing the wood pellets, as well as moving them, avoiding sawdust collecting and the bags
breaking, because if this happens, their level of humidity is prone to increase. If this happens, and the amount of sawdust
changes, the caloric properties of the fuel will vary
USING WOOD PELLETS THAT DO NOT COMPLY WITH THE REGULATIONS PREVIOUSLY STATED
COULD DAMAGE THE HEATER AND COMPROMISE ITS PERFORMANCE, GIVING RISE TO
THE INVALIDATION OF THE WARRANTY AND TERMINATING THE RESPONSIBILITY OF THE
MANUFACTURER FOR THE PRODUCT.

17
5.2.1 PROTECTING THE FLOOR
If your ooring is ammable (parquet, oating platform) or sensitive to heat, it is
necessary to place a protective layer that separates the heater from the oor.
This protection must be make of a material that is resistant to re, such as marble,
steel plating, slabs, etc. This material must be capable of bearing load without being
deformed or broken by the weight of the heater.
This protection must be at least two mm thick and must project at least 150 mm
beyond the heater on both sides and to the rear, and 300 mm at the front.
5.2.2 MINIMUM SAFETY DISTANCES
The following gures show the minimum safety distances that must always be observed.
Safety distances to
ammable material
Safety distances to non-
ammable material
A200 mm 100 mm
B200 mm 100 mm
C1500 mm 750 mm
D500 mm 200 mm

18
5.2.3 MEASUREMENTS TO PIERCE BUILDING ENVELOPES
The ducting for the smoke must pierce the building envelope one or more times depending on where the unit is to be
installed.
The size of the holes that will need to be made depends on the diameter of the ducting and of the material to be
penetrated. Once a pipe has been passed through, the space must be lled with an insulating material (rock wool,
ceramic bre, etc.)
Thickness
of insulation
[mm]
Diameter of
holes to be
made (mm) for
an outlet pipe
measuring Ø80
mm
Wall of ammable wood, or with
ammable parts 100 280
Wall or ceiling of cement 50 180
Wall or ceiling of bricks 30 140
5.3 SMOKE DUCTING OR CHIMNEY
Smoke ducting or a chimney should be used to vent the gases produced by the heater during combustion to the exterior.
The responsibility for the work done to make the smoke ducting lies with the installer, for which reason FERLUX recommends
that the installation be carried out by qualied personnel (who are in possession of an installer’s licence) to whom enquiries
can be made regarding the performance of tests with respect to the smoke ducting, air intake, etc. Furthermore, all the
safety regulations laid out by the specic legislation in force in the country where the unit is being installed must be followed.
5.3.1 GENERAL BACKGROUND
The following points must be taken into account during the installation of the smoke ducting:
• The smoke evacuation system must be unique to each heater (smoke evacuation systems must never be
shared with other units).
• The path of the evacuated smoke must be as short as possible and seek always to be as vertical as possible.
• The internal section of the smoke evacuation ducting system must be uniform and, preferably, circular. In the
event that the section is squared or rectangular, the edges must be rounded with a minimum radius of 20 mm,
bends must be regular and free of irregularities, ensuring that deviations from the path do not exceed 45° with
respect to the axis.
• It is absolutely prohibited to install valves or seals that may obstruct the passage of the smoke.
• Horizontal stretches of the chimney must be avoided, since this causes it to gather dirt and requires the ducting
to be cleaned more often. If such a stretch is inevitable, it must be slightly inclined and a ‘T’ installed at each bend
so that it can be cleaned without requiring disassembly of the entire section. The installation must be carried
out in such a way that regular cleaning is guaranteed without the need to disassemble the entire smoke ducting
assembly.
• The safety regulations and minimum distances must be respected when installing the smoke ducting.

19
5.3.2 CALCULATING THE EXHAUST SMOKE DUCTING
The following instructions must be taken into account for the path of the chimney:
• Tubes made of AISI Type 316 stainless steel, varnished aluminised steel pipes with a minimum thickness of
1.5 mm, and porcelain pipes with a minimum thickness of 0.5 mm shall be used.
• Flexible pipes are allowed if they meet the specications set out by law (made of stainless steel with a smooth
interior wall), coupling pieces must be at least 50 mm in length.
A table is shown below that contains the limitations for the installation:
LIMITATIONS WITH A PIPE Ø 80 mm WITH A DOUBLE
WALLED PIPE Ø 100 mm
Horizontal stretches with a minimum incline of 5% 2 m 2 m
Minimum length (obligatory in vertical stretches) 1,5 m 2 m
Maximum length (with two 90° bends) 4,5 m 8 m
The maximum length for a vertically installed duct with a maximum of two 90° bends and a minimum
of horizontal travel (only to pierce the wall, if necessary) has been calculated.
In the event that the installation is di󰀨erent to that previously stated, it will be necessary to calculate
the ‘equivalent load loss’ for the installation.

20
The ‘equivalent load loss’ of an installation is the result of the sum of the total metres of the installation added to any
additional losses that are shown in the following table:
TYPE OF PATH OR ACCESSORY LENGTH TO SUBTRACT FROM THE TOTAL
ALLOWED
90°bend 1 m
Horizontal stretch 45° bend 1 m
`T´accessory 1 m
Diagonal stretch 0,5 m
45 ° bend 0,5 m
The sum of these losses must be equal to or less than the maximum length allowed shown in the table of
limitations. If this is not met, the diameter of the smoke ducting to be installed must be increased:
LOSS OF EQUIVALENT LOAD ≤ MAXIMUM PERMITTED LENGTH
5.3.3 INSTALLATION IN TRADITIONAL-TYPE CHIMNEYS (see g. 5.3 and 5.4)
If you wish to make use of an existing chimney structure, it is necessary to carry out some tests to check its seal. If
the existing chimney is not sealed, the situation could arise where there is a positive depression with respect to the
atmosphere, meaning that there could be an ingress leak into living spaces. If the seal is not fully tight, it is advisable
to put new pipework in.
If the cross-section of the chimney is excessively large, pipework with a maximum diameter of Ø 150 mm could be
considered, with it being advisable to also install insulation around this.
5.3.4 EXTERIOR STRETCH OF THE CHIMNEY (see g. 5.5)
If an exterior stretch is anticipated for the chimney, it must meet the following requirements:
• The part of the installation that penetrates to the exterior must be made with insulated and double-walled pipes made
of stainless steel and attached to the building.
• This ducting must have an inspection hatch for regular maintenance tasks.
• The chimney must rise to the gable of the house, in line with the requirements stated in section 5.3.