Immergas LUXOR 16 Operating instructions

Instructions and
recommendations
Installer
Maintenance technician
IE LUXOR
16 - 20 - 24 - 28 - 33
Pellet boiler
*1.042026ENG*

3
General information ....................................................................4
Loading the pellet tank..........................................................................6
Pellet.........................................................................................................6
Instructions for safe and ecient use.................................................8
Safety devices ..........................................................................................8
Technical features and dimensions..............................................9
LUXOR 16 boiler dimensions...............................................................9
LUXOR 20-24 boiler dimensions.......................................................10
LUXOR 28-33 boiler dimensions...................................................... 11
LUXOR 16-33 boiler technical data...................................................12
Installation ................................................................................. 13
Positioning and limitations.................................................................13
Boiler room ...........................................................................................13
Flue exhaust duct connection.............................................................14
Draught regulator kit (Optional.........................................................14
Foreword................................................................................................15
Flue .......................................................................................................15
Technical features .................................................................................16
Dimensioning .......................................................................................16
Maintenance..........................................................................................17
Chimney pot .........................................................................................17
Chimney components..........................................................................17
Connection to the ue.........................................................................18
Examples of correct installation .........................................................18
Hydraulic connection ..........................................................................19
Residual head graphics ........................................................................21
Puer management..............................................................................22
System diagram.....................................................................................23
Filling the boiler ...................................................................................24
Assembling the control panel .............................................................24
Boiler ignition.......................................................................................25
Control panel ........................................................................................25
Ignition ..................................................................................................25
Inspections and maintenance ....................................................27
Alarm signal..........................................................................................27
Faults with electrical devices...............................................................28
Troubleshooting....................................................................................29
Mechanical or electronic faults...........................................................29
Faults in connection with the hydraulic system...............................31
Boiler maintenance and cleaning with cast iron brazier.................32
Boiler maintenance and cleaning for all models ..............................34
LUXOR diagram...................................................................................36
Product che (in compliance with Regulation 811/203) ................37
INDEX

4
General information
e entire range of products is manufactured according to the
following directives and regulations:
2014/30 EU (EMCD Directive), 2006/42/EC, 2014/35 EU (Low
Voltage Directive), 2011/65/EU; EN 61000-6-2; EN 61000-6-3;
EN 60335-1; EN 60335-2-102; EN 62233; EN 50581; EN 303:5-
2012
Aer removing the packaging, make sure the contents are in-
tact and complete. Should there be a discrepancy, contact your
boiler’s dealer.
Before installing the appliance, it is recommended to wash the
system’s pipes accurately in order to remove any residues that
could stop the appliance from running eciently.
It the boiler is not used for long periods of time, it is recom-
mended to do the following:
- disconnect the plug from the mains power supply
- close the heat system and DHW water valves
- if there is a risk of freezing, empty the heating and DHW
system.
Installation and maintenance must be carried out by qualied
sta in compliance with the laws in force in this regard and
pursuant to the instructions of the Manufacturer.
e Manufacturer shall not be held liable in any way should in-
stallation be carried out by unqualied people and for failure to
comply with the general warnings and installation instructions.
is manual is an integral part of the product: make sure it
always accompanies the appliance, even if it is transferred to a
new owner or user or the boiler is transferred to a new place. If
it is lost, please ask the manufacturer for another copy.
Before installing, using and carrying out maintenance on the
product, you must read these instructions carefully.
e technical installer must provide you with the relative in-
structions before proceeding with rst ignition.
is boiler must only be used for its explicitly intended use.
erefore, all liability for any harm to people and/or animals
or damage to property caused by improper use of the product
will be borne by the user.
Dear Customer,
whilst thanking you for purchasing one of our boilers, we would like to remind you that pellet boilers are the most innovative
central heating solution that is the result of highly advanced technology with top quality processing and a simple and elegant de-
sign that is adapted to any technical room, making the environment cosy that is only obtained by the welcoming heat of a ame.
e boilers, which operate exclusively with wood pellets having a maximum diameter of 6mm, are equipped with a vertical pipe
heat exchanger.
e boilers convey heat to your system with thermal power that is adjusted according to the technical room to heat: just manually
set the water temperature of the central heating system, recommended 65 °C - 70 °C.
e boilers have been provided with sophisticated automatisms and control and safety systems that guarantee ecient and prac-
tical operation.
During rst ignitions of the boiler, the vapours emitted by the paint may cause a bad smell due to hardening. erefore, it is ad-
visable to air the room well in order to prevent prolonged persistence in front of the boiler.
IT IS prohibited to install the appliance in bedrooms or areas having explosive environments.
ATTENTION:
this warning symbol located in various points of this booklet indicates that the message it refers to must be
read carefully and understood, since failure to follow what is written can cause serious damage to the boiler and
endanger the user.
INFORMATION:
this symbol is used to highlight important information for proper boiler operation. Failure to comply with the
provisions will compromise use of the boiler and operation will be unsatisfactory.

5
General information
Responsibility
We decline all liability, both civil and criminal, for accidents
caused by partial or total failure to comply with the
instructions herein.
We decline all liability caused by improper use of the boiler,
improper use by the user, unauthorised modications and/or
repairs, and use of non-original spare parts for this model.
e manufacturer declines all liability, both civil or criminal,
direct or indirect, due to:
•Poor maintenance;
•Failure to comply with the instructions in the manual;
•Use that does not comply with the safety directives;
•Installation that does not comply with the country’s
regulations in force;
•Installation by unqualied or untrained sta;
•Modication and repairs that are not authorised by the
manufacturer;
•Use of non-original spare parts;
•Exceptional events.
Extraordinary maintenance of the boiler must be carried out at
least once a year. is maintenance must be duly programmed
with the Technical Support Service, and is the Customer’s re-
sponsibility.
For safety reasons, it is advisable to remember that:
- during normal product operation, the ame’s door must always
remain closed
- always keep the combustion tank cover closed
- it is not recommended for children or disabled people to use
the boiler unsupervised
- do not touch the boiler barefoot and/or with wet or moist
parts of the body
- avoid direct contact with parts of the appliance that tend to
overheat during normal operation
- the handle to clean the boiler must always be used when the
boiler is cool
- it is forbidden to modify the safety or adjustment devices
without authorisation or instructions from the manufacturer
- do not pull, detach, or twist electrical cables that come out
from the boiler, even if they are disconnected from the mains
power supply
- it is recommended to position the power supply cable in such
a way as to avoid contact with hot parts of the appliance
- the power supply plug must always be accessible aer instal-
lation
- do not block or reduce the combustion air piping, which is
essential for correct combustion
- keep packaging parts away from unsupervised children or
disabled people
- for any problems, contact your dealer or qualied and au-
thorised sta, and in case of repairs, always request original
spare parts
- periodically check and clean the ue exhaust ducts
- an accumulation of unburnt pellets in the burner aer failed
ignitions must be removed before proceeding with new ignition
- do not use any ammable liquids for ignition
- do not bring the pellet bag into contact with the boiler when
lling the pellet tank
- make sure the electric system is suitable
- all local and national laws and European Standards must be
complied with when installing and using the appliance
- this appliance must not be used as a waste disposal incinerator
and must not be used with dierent combustion other than
pellets
- keep the pellets and ammable materials at a safe distance
In the event of a re, disconnect electric power supply, use a
compliant extinguisher and, if necessary, call the Fire Depart-
ment. en contact the Authorised Service Centre.

6
General information
Pellet
Use of poor quality pellets or other unsuitable materials may
damage certain components of the boiler and compromise its
correct operation: this may terminate the warranty and free the
manufacturer of any liability.
Our boilers must be used with 6mm diameter, 30 mm long pellets
having maximum 6%humidity. Store the pellets away from sources
of heat, and not in humid areas or explosive environments.
It is recommended to use EN PLUS A1 certied pellets according to
ISO 17225-2
e fuel must be loaded from the upper part of the boiler, open-
ing the door, while the boiler is o.
To facilitate the procedure, complete the operation in two stages:
•Pour half the contents into the tank and wait for the pellets to
deposit at the bottom;
•Complete the operation by pouring the second half;
•Always keep the cover of the fuel tank closed aer loading
the pellets;
Since it is a central heating product, the boiler has very hot outer
surfaces. For this reason, maximum caution is recommended
during operation, in particular:
•Do not touch the ue exhaust;
•Do not carry out any type of cleaning;
•Do not discharge the ashes;
•Do not open the ash drawer;
•Keep children away;
Loading the pellet tank
•Only use wood pellets;
•Keep/store the pellets in dry places without humidity;
•Never pour pellets directly onto the brazier;
•e boiler must only be fed with high quality pellets having a 6mm diameter, as per type recommended
by the manufacturer;
•e exhaust pipes must be connected to the chimney before electrically connecting the boiler.
•e protection grid situated inside the pellet tank must never be removed;
•e technical room where the boiler is installed must have sucient air exchange;
•IT IS forbidden to operate the boiler with the door open or with the glass broken;
•Do not use the boiler as an incinerator. e boiler must only be used for its intended purpose.
Any other use must be considered improper and therefore dangerous. Do not put any objects into the
tank other than wood pellets;
•e surfaces, glass, handle and pipes overheat when the boiler is on: during operation, these parts
must be touched with care and with adequate protection;
•Keep fuel and any ammable materials at a safe distance from the boiler.
Do not remove the protection grid inside the
tank. When loading, do not let the pellet bag
come into contact with hot surfaces.

7
Instructions for safe and efficient use
•e boiler must be electrically connected to a system
provided with an earth cable, in accordance with the
regulations in force;
•e system must be duly sized according to the boiler’s
declared electrical power;
•Do not wash the inner parts of the boiler with water.
Water may damage the electric insulation, causing electric
shocks;
•e pellet boiler is not a cooking device;
•e external surfaces may become very hot during
operation. Do not touch them unless you are wearing
specic protection;
•e appliance’s power supply cable plug must only be
connected aer installing and assembling the appliance,
and must remain accessible aer installation. It must also be
connected to a suitable and accessible bipolar switch.
•Make sure that the electric cables do not come into contact
with hot surfaces.
• e LUXOR range is certied as a boiler pursuant to
regulation UNI 303-5 /2012.
Its correct use provides for a duly sized Puer. erefore,
for optimal operation, the boiler must be coupled to a
puer having a minimum volume of 20 litres/kW.
•e device can be used by children at least 8 years old as
well as by persons with reduced physical, sensory or mental
capabilities, or lack of experience or required knowledge,
provided that they are under surveillance, or aer they have
been instructed relating to the safe use and have understood
the potential dangers. Children must not play with the
appliance. Cleaning and maintenance destined to be
performed by the user cannot be carried out by children.
• Do not use the boiler as a ladder or support structure;
•Do not dry laundry on the boiler. Any clothes rack or
similar device must be kept at a safe distance from the boiler
- Fire hazard;
•Carefully explain to old and/or disabled people, and
especially all children, that the boiler is made up of material
subject to high temperatures, and they must thus be kept
away during operation;
•Never touch the boiler with wet hands; this is an electric
appliance. Always disconnect the cable before intervening
on the unit;
•e door must always be closed during operation;

8
Instructions for safe and efficient use
IT IS forbidden to tamper with the safety devices. You must rst eliminate the cause that triggered the safety
device before it is possible to ignite the boiler and thus restore operation. Refer to the chapter regarding the
alarms in order to understand how to interpret each alarm that may appear on the boiler’s display.
Antifreeze function: if the probe installed inside the boiler detects water temperature below 5 °C, it automatically enables the
circulation pump in order to prevent system freezing.
Pump anti-block function: in case of prolonged inactivity of the pump, it is enabled for 10 seconds at regular intervals in order
to prevent it from blocking.
e product is classied as rapid disconnection since it has passed the tests provided for by regulation EN 303-5 Chap. 5.14.
Safety valve:
this valve intervenes
to prevent hydraulic system
overpressure.
If boiler or system pressure ex-
ceeds 2.5 bar, it discharges water
from the circuit.
Important!
e appliance’s manufacturer
shall not be held liable for any
ooding caused by the trig-
gered safety valve if it has not
been correctly tted outside
the product to a suitable col-
lection and discharge system.
Automatic vent valve: this
valve discharges air inside the
boiler.
Gearmotor: if the gearmotor
stops due to a “ALAR-NO-
ACC”or “ALAR-NO-
FIAM”warning, the boiler
continues to operate until the
ame goes out as a result of
no fuel and until it reaches
the minimum cooling level.
Electric safety: the boiler is
protected against sudden cur-
rent uctuations (e.g. lighten-
ing) by a main 4 A fuse that
is found in the control panel
situated at the back of the boil-
er close to the power supply
cable. e electronic boards
are also protected with other
fuses.
WATER
RESET
Manual reset safety thermo-
stat for the water temperature: if
the water temperature exceeds
the safety value set at 100 °C,
boiler operation stops imme-
diately and the screen will display
“ALAR-NO-FIAM”. To restart
it , you must reset the thermo-
stat manually.
Flue pressure switch: check the pres-
sure in the ue pipe. is blocks the
pellet loading auger if the discharge
is obstructed or there are signicant
backpressures, for example, in case of
wind, an open combustion chamber
door or ue extractor fault. When
the pressure switch is triggered,
“ALAR-NO-ACC”will be displayed.
Flue temperature probe: this
thermocouple detects the ue
temperature, maintaining op-
eration or stopping the boiler
when the ue gas temperature
rises above the pre-set value.
Water temperature probe: if
the water temperature ap-
proaches the blocking temper-
ature (100 °C), the probe stops
the supply of pellets.
Safety devices

9
Technical features and dimensions
LUXOR 16 boiler dimensions
Key:
REF. Description
A1 System ow A2 System return
C Pressure discharge valve
D Combustion air intake
E Flue exhaust
F Position of main power supply switch
GControl panel
H Water temperature probe
Iermostat

10
Technical features and dimensions
LUXOR 20-24 boiler dimensions
Key:
REF. Description
A1 System ow A2 System return
C Pressure discharge valve
D Combustion air intake
E Flue exhaust
F Position of main power supply switch
GControl panel
H Water temperature probe
Iermostat

11
Technical features and dimensions
Key:
REF. Description
A1 System ow A2 System return
C Pressure discharge valve
D Combustion air intake
E Flue exhaust
F Position of main power supply switch
GControl panel
H Water temperature probe
Iermostat
LUXOR 28-33 boiler dimensions

12
Technical features and dimensions
Models UM LUXOR 16 LUXOR 20 LUXOR 24 LUXOR 28 LUXOR 33 NOMINAL HEAT INPUT kW 16.10 19 23.8 27.17 31.8 NOMINAL WATER HEAT OUTPUT (max .- min.) kW 14.6 - 4.10 17.51 - 5.18 21.51 - 5.20 24.5 - 6.34 29.1 - 6.34 EFFICIENCY CLASS A+A+A+A+A+ EFFICIENCY (Pmax.) %91.0 92.13 90.4 90.1 91.6 PELLET CONSUMPTION (Pmin.- Pmax.) kg/h 0.92-3.30 1.2- 3.9 1.2-4.8 1.4-5.5 1.4-6.4 PELLET TANK CAPACITY l/kg 70 / 46 92/60 92/60 123/80 123/80 OPERATION AT MINIMUM / NOMINAL POWER h 50-13.9 50- 15.5 50- 12.5 56-14.5 56-12 FLUE GAS TEMPERATURE (Pmax - Pmin) °C 116 - 54.3 90.5 – 57 108.1 – 57 133.5 – 64 137.2 – 64 MASS FLUE GAS FLOW RATE (Pmax - Pmin) g/s 9.7 – 3.5 10.4 – 4.7 12.9 – 4.7 15.8 – 4.8 16.9 – 4.8 MINIMUM RECOMMENDED DRAUGHT Pa 8 - 15 8 - 15 8 - 15 8 - 15 8 - 15 VOLUME THAT CAN BE HEATED (data referred to well insu- lated areas)
m3300 380 430 540 620
MAXIMUM OPERATING PRESSURE bar 2.5 2.5 2.5 2.5 2.5 WATER CONTENT litres 31 50 50 60 60 ELECTRIC POWER SUPPLY V/hz 220 / 50 220/50 220/50 220/50 220/50 SPEED / IGNITION ABSORBED POWER W W 82 / 320 144 /350 144 /350 162 /350 162 /350 FLUE EXHAUST PIPE MM mm 80 80 80 100 100 EXPANSION VESSEL CAPACITY litres 8 8 8 8 8 DIMENSIONS (HxLxD) mm 1080x687x560 1240x610x785 1240x610x785 1360x670x866 1360x670x866 WEIGHT kg 180 240 241 290 292 MAXIMUM/MINIMUM CO EMISSIONS (at 10%O2)mg/
Nm3
68 / 391 19.3/245 26.7/245 23.9/228.2 33/228.2
MINIMUM SYSTEM RETURN TEMPERATURE °C 56 56 56 56 56 NOISE LEVEL ACCORDING TO EN15036-1 dB 35 36 36 38 38 BOILER CLASS according to EN 303-5:2012 5 5 5 5 5 ENVIRONMENTAL CLASSIFICATION according to Decree 7/11/17 n. 186
stars 3 4 3 3 3
RECOMMENDED HEAT STORAGE TANK VOLUME: 20 litres/kW OPERATION WITH REGARD TO FLUE EXHAUST: NEGATIVE PRESSURE
LUXOR 16-33 boiler technical data

13
40 cm 40 cm
40 cm
Installation
40 cm
40 cm
40 cm
40 cm
Min.
100 cm2
Distance from objects
eboilermustbeinstalledin suchawaythatitcanbe inspected
from all sides. erefore, you must respect a minimum distance
of 40 cm at the back and sides. It is also recommended to keep
the pellets and ammable materials at a safe distance
POSITIONING AND LIMITATIONS
For all information and any further clarications, refer to the
local national regulations in force.
In the event of simultaneous installation with other central heat-
ing appliances, provide for suitable air inlets for each of them
(according to the instructions of each product).
It is not permitted to install the product:
• in areas that have appliances supplied with
liquid fuel with continuous or discontinuous
operation that take combustion air from the
room in which they are installed, or;
• in areas where type B gas appliances are in-
stalled to heat the rooms, with or without pro-
duction of domestic hot water, and in adjacent
or communicating rooms, or;
• in areas in which the measured operating nega-
tive pressure between the external and internal
technical room exceeds 4 Pa.
It is forbidden to position the product in bedrooms, bath-
rooms, garages and, in general, in places with a re risk.
BOILER ROOM
Check that the room meets the requirements and characteristics
of regulations in force. Also, the room must at least provide as
much airow as required for regular combustion. erefore, it
is required to provide openings on the walls in the room that
meet the following requirements:
•Have a minimum free section of 6 cm2for every 1 kW (859.64
kcal/h). e minimum section of the opening must not be
less than 100 cm2. e section can be calculated by using the
following:
S =K *Q ≥100 cm2
Where “S”is expressed in cm2, “Q”in kW, “K”=6 cm2/kW
•e opening must be situated in the bottom part of an exter-
nal wall, preferably on the opposite side of the combustion
gas exhaust.

14
2
Valvola
oscillante
Blocco valvola
oscillante
Manopola
di regolazione
depressione
Indicatore
di regolazione
depressione
Regolatore
di tiraggio
Max. 2,5 m
Installation
Max. 2.5 m
H >1.5 m
H >4 m
Draught
regulator
Negative pressure
adjustment knob
Oscillating valve
block
Negative pressure
adjustment
indicator
Oscillating
valve
2m. SPEED
Objects or parts that are heat sensitive or ammable
cannot be stored in contact with the product; these
objects must be kept at a minimum front distance
of 80 cm from the outermost design point of the
product.
FLUE EXHAUST DUCT CONNECTION
When making the hole to pass the ue exhaust pipe, you
must take the presence of any ammable materials into
consideration. If the hole must pass through a wall made of
wood or thermolabile material, the INSTALLER MUST
rst use the special wall tting (minimum 13 cm diam.) and
adequately insulate the product’s pipe that passes through it
using suitable insulating materials ( 1.3 - 5 cm thick with min.
heat conductivity of 0.07 W/m°K).
e same minimum distance must also be respected if the
product’s pipe must cover vertical or horizontal sections that
are close to the thermolabile wall.
In outer sections, it is recommended to use a pipe with a double
insulated wall to prevent the onset of condensate.
e combustion chamber operates in negative pressure.
DRAUGHT REGULATOR KIT (Optional)
e draught regulator constantly compensates for possible
draught variations inside the ue due to outdoor atmospheric
conditions.
If the draught inside the ue increases excessively, the
oscillating valve (adjustable) opens and air penetrates into the
ue from the heated room.
e negative pressure (draught) in the boiler remains constant,
thus ensuring perfect combustion.
e draught regulator is a device that must be installed next to
the generator on the ue exhaust pipe.
e device is equipped with an oscillating valve that can be
calibrated according to the negative pressure values.
Calibration is adjusted in order to maintain a constant negative
pressure ratio.
If the calibrated value is exceeded due to strong negative
pressure, the oscillating value opens due to negative pressure
channelled in the chimney, reducing excess draught.
It is recommended to install the draught regulator in ue
sections that exceed 10 metres.

15
Installation
min. 3.5 metres
erefore, it is important that the ue is up to standard and is
always kept in perfect eciency.
A ue that services a pellet boiler must have minimum category
T400 and must withstand soot re.
Flue gas exhaust must be conveyed on a single ue with
insulated steel pipes (a) or on an existing ue that complies
with the intended use (B).
A simple cement sha must be duly ducted with the relative
pipe operating with negative pressure.
Both solutions require an inspection cap (AT) and/or a small
inspection door (AP) and a suitable collecting device for any
condensate - refer to the gure.
It is forbidden to connect several pellet devices or any other
type of device (vent hoods...) to the same ue.
FOREWORD
is chapter regarding the Flue was drawn up in accordance
with the provisions of European regulations (EN13384 - EN1443
- EN1856 - EN1457).
It provides certain information regarding adequate, correct
installation of the ue, but must in no way replace the regula-
tions in force, which the qualied manufacturer must possess.
Check the local authorities for any restrictive regulations that
concern the combustion air inlet, ue exhaust system, ue, and
chimney pot.
e Company declines any liability regarding boiler malfunction
if attributable to a wrongly sized ue that does not comply with
regulations in force.
FLUE
A qualied technician must check the ue’s eciency.
e ue or chimney is very important for correct operation of
a central heating appliance for solid fuels.
FLUE
Backow area
Backow area

16
Installation
AISI 316 steel
chimney with
double insulated
chamber with
ceramic bre
or equivalent
resistance up to
400°C.
Refractory
chimney with
double insulating
chamber and
external sleeve
in lightweight
concrete made
from a clay type
of honeycomb
material.
Traditional square
clay chimney with
empty insulating
inserts.
Avoid chimneys
with internal
rectangular
sections whose
ratio between
the largest and
smallest side is
greater than 1.5
(e.g. 20x40 or
15x30).
VERY GOOD GOOD AVERAGE POOR
e sections/lengths of the chimneys listed in the technical data
table are indications for correct installation. Any alternative
congurations must be correctly dimensioned according to
the general calculation method regarding UNI EN13384-1 or
other approved eciency methods.
Below are a few examples of ues available on the market:
DIMENSIONING
e negative pressure (draught) of a ue also depends on its
height.
Use suitable tools to check that draught is between 8 Pa and
15 Pa.
e internal section of the ue can be round (it is the best),
square or rectangle (the ratio between the internal sides must
be ≤1.5) with the sides connected with a minimum 20 mm
radius.
•Be adequately insulated to prevent condensate and reduce
the eect of ue cooling.
•Must be minimum category T400 and withstand soot re.
In particular, it is recommended to check the data plate of the
ue (according to EN1856-1, EN1443) for the safety distances
that must be respected in the presence of or passing through
of combustion materials and the type of insulating material to
use. ese provisions must be strictly complied with in order
to prevent serious harm to one’s health and safeguard the
integrity of the building.
e chimney’s opening must be in the same room in which
the appliance is installed or, at most, in the adjacent room, and
to install a soot and condensate collection chamber under the
opening, which can be accessed from the metal sealed door.
TECHNICAL FEATURES
e ue that services a pellet device must meet the following
requirements:
•be made with materials that can withstand mechanical
stress, heat, action of combustion products and their
condensate over time.
•be made with waterproof materials against ue gas,
condensate, thermally insulated and suitable to withstand
normal mechanical stress over time
•have a vertical performance with axis deviations not
exceeding 45° and without constrictions
•Must be suitable for specic operating conditions of
the product and provided with CE marking (EN1856-1,
EN1443).
•Be sized correctly in order to meet the ue gas draught/
disposal required to regulate product operation (EN13384-1)

17
Installation
CHIMNEY COMPONENTS
Key:
REF. Description
1 Chimney pot
2Outow route
3Flue pipe
4 ermal insulation
5 External wall
6 Chimney tting
7 Flue duct
8 Heat generator
9 Inspection door
MAINTENANCE
e ue must always be clean since unburnt soot or oil deposits
reduce the section and block the draught, thus compromising
proper operation of the boiler and, if in large quantities, may
catch re.
It is compulsory to clean and check the ue and chimney pot
by a qualied chimney sweep at least once a year. Aer the
inspection/maintenance, ask the technician to leave a written
report stating the system is safe.
Failure to clean the appliance will compromise the system’s
safety.
CHIMNEY POT
e chimney pot is a vital element for the heating appliance
to operate well: it is recommended to have a windbreaker (A)
type of chimney pot.
e area provided for ue gas exhaust openings must be
minimum double the section of the ue/dusted pipe and
adjusted in such a way that ue exhaust is ensured, even if
windy.
It must prevent rain, snow and any animals from entering. e
atmosphere outlet height must be outside the backow area
caused by the shape of the roof and any obstacles nearby.

18
Installation
Backow area
Key:
REF. Description
UInsulating MATERIAL
V Reduction from 100 to 80 mm, if required
I Inspection cap
S Inspection door
P Air inlet
T T-tting with inspection cap
CONNECTION TO THE FLUE
Connection between the appliance and the ue must be made
with a ue duct compliant with EN 1856-2 e connection
section must be maximum 2 m long horizontally, with a
minimum slope of 3%and with a maximum number of three
90°C curves (that can be inspected - the appliance’s T tting
outlet must not be calculated).
e diameter of the ue duct must be equal to or greater
than the appliance’s outlet.
Use ue ducts with silicon gaskets or similar sealing devices
that can withstand the appliance’s operating temperatures (min
T400 class P1).
It is forbidden to use metal exible pipes made of cement bre
or aluminium. For changes in direction, it is recommended to
always use a T tting with an inspection cap, which facilitates
regular cleaning of the pipes.
Always make sure that the inspection caps are closed and
sealed with their relative gasket intact aer cleaning.
It is forbidden to connect the same ue duct to multiple
appliances, or with discharge from overhead hoods. It is
forbidden to install the combustion product’s exhaust directed
to the wall, or towards closed spaces and open air.
e ue duct must be minimum 400 mm away from ammable
construction or heat sensitive elements.
In particular, it is recommended to check the ue’s data plate
for the safety distances to respect in the presence of combustion
materials and the type of insulating material to use. ese
provisions must be strictly complied with in order to prevent
serious harm to one’s health and safeguard the integrity of the
building.
EXAMPLES OF CORRECT INSTALLATION
1. Installation of a Ø150mm ue with boring in order to pass
a pipe increased by:
minimum 100mm around the pipe, if connecting with
non-ammable parts such as cement, bricks, etc.; or
minimum 300mm around the pipe (or as provided on the
data plate), if connecting with ammable parts such as
wood, etc.
In both cases, insert suitable insulation between the ue
and the oor.
It is recommended to check and respect the information
on the ue’s data plate, especially the safety distances from
combustible materials.
e aforesaid rules also apply for holes made on the wall.
2. Old ue, minimum Ø150mm ducting with an external
door to clean the chimney.
3. External ue made exclusively of stainless steel insulated
pipes, meaning with a minimum Ø150mm double wall:
everything must be secured well to the wall. With a
windbreaker chimney pot.
4. Piping system with T ttings that facilitate cleaning without
needing to disassemble the pipes.

19
Installation
SYSTEM
RETURN SYSTEM
FLOW
Boiler connection unit.
(LUXOR 20 - 24 - 28 - 33)
A2A1
C
e safety valve (C) must always be connected to a water
drain pipe. e pipe must be able to withstand high water
temperatures and pressure.
e safety valve must be connected to a draining system in
order to prevent water from overowing and wetting the
structure and oor in case of over-pressures.
Recommendations:
If installation of the boiler provides for interaction with another
existing system complete with a central heating appliance (gas
boiler, methane boiler, diesel oil boiler, etc.), contact qualied
sta that can meet system compliance according to current
provisions of law in this regard.
System washing
In compliance with local, national regulations in force, in order
to protect the heating system from damaging corrosion, scaling
or deposits, it is very important to wash the entire system
before connecting the boiler in order to remove any residues
and deposits. Aer washing the system, it is recommended
to use inhibitors in order to protect it against corrosion and
deposits. Always install interception valves upstream from
the boiler in order to insolate it from the water system should
it be necessary to move or transfer it for routine and/or
extraordinary maintenance. is also applies to the system’s
ow and return pipes, if the central heating system is on a
higher level than the boiler.
HYDRAULIC CONNECTION
Install the boiler in the selected place, making sure it
complies with the provisions.
e boiler’s structure or block must only be handled
vertically with trolleys.
e materials used for packaging are neither toxic nor
harmful. erefore, they do not require special disposal
processes.
Aer removing the packaging, make sure the boiler is
complete and not damaged. If in doubt, contact your dealer.
e boiler must be connected to the hydraulic
system by specialised sta ONLY that is able to
install the device perfectly in compliance with
the provisions in force in the country where it is installed.
e manufacturer declines any liability in the event of
damage to property or harm to people or in the event of
breakdown if the aforesaid warnings are not respected. An
anti-condensation valve must be installed on the sys-
tem’s return. e valve is not supplied with the boiler.
e LUXOR range is provided with an 8-litre expansion
vessel. With regard to extended systems, you must consider an
additional, duly sized vessel on the system next to the generator
or on the puer.
Boiler connection diagram (LUXOR 16)
SYSTEM
FLOW SYSTEM
RETURN

20
M
M
R
R
AB
AB
B
B
A
A
SFIATO
VALV OLADI
SICUREZZA
Installation
SAFETY
VENT VALVE
SAFETY VENT
VALVE
SAFETY
VENT
VALVE
Position of safety valve drain
(LUXOR 28 - 33)
Position of safety valve drain
(LUXOR 20 - 24)
Position of safety valve drain
(LUXOR 16)
Boiler thermostatic valve assembly diagram
(LUXOR 20 /33) (Not supplied)
Boiler thermostatic valve assembly diagram
(LUXOR 16) (Not supplied)