Unical .it AQ Series User manual

.it AQ
20 - 24 - 28 - 33
INSTRUCTIONS FOR THE INSTALLER, USE
AND MAINTENANCE

2
Dear Customer,
Thank you for having chosen one of our products, the result of many years of experience and of an ongoing quest for
higher quality in terms of safety, reliability and performance.
In this manual, you will nd all the information and useful advice to be able to use your product in the utmost safety and
eciency.
• Incorrect installation, maintenance that is not performed properly, and improper use of the product relieves the manufac-
turer from any possible damage resulting from use of the stove.
• The appliance must not be used as an incinerator nor must fuel other than pellets be used.
• This manual has been drafted by the manufacturer and is an integral part of the product. It must remain with it during its
entire lifetime. Should the product be sold or transferred, always make sure that the booklet is present as the information
it contains is addressed to the purchaser and to all those involved in its installation, use and maintenance.
• Read the instructions and technical information in this manual carefully before proceeding with installation, use or any
intervention on the product.
• Abiding by the indications provided in this manual guarantees your own safety and that of the product, as well as working
economy and a longer operational life.
• The careful designing and risk analysis performed by our company have produced a safe product. Nonetheless, before
performing any type of operation, it is recommended to scrupulously comply with the instructions provided in this docu-
ment and to always have it on hand.
• Check that the oor where the product is installed is perfectly level.
• The wall where the product is placed must not be made of wood or ammable material. The safety distances must be
maintained.
• While operating, some parts of the stove (door, handle, sides) can reach high temperatures. Therefore pay close atten-
tion and use the due precautions especially in the presence of children, elderly, disabled and animals.
• The stove must be installed by authorised personnel (Authorised Service Centre).
• Diagrams and drawings are supplied as examples; in an eort to pursue a policy of constant development and renewal
of the product, the manufacturer may perform the modications considered appropriate without any prior notice.
• It is recommended to wear gloves when the stove is at its maximum power output to touch the pellet loading door and
the handle to open door.
• installation in bedrooms or rooms with explosive atmospheres is forbidden.
• Only use spare parts recommended by the supplier.
In the event of a re, disconnect electric power, use an approved re extinguisher and, if needed, call the Fire Brigade.
Then contact the Authorised Service Centre.
We remind you that the appliance must be commissioned by our Authorised Service Centre (Law
37/2008) which will check the installation and ll out the warranty.
Any type of unauthorised tampering or replacement of non original components of the stove may be
dangerous for the safety of the operator and releases the manufacturer from any civil and penal liability.
Never cover the body of the stove in any way or obstruct the slits at the top when the appliance is running.
All of our stoves have been tested with in-line ignition.
This instruction booklet is an integral part of the product: always ensure it is supplied with the appliance, even in case of
transfer of ownership or to another user, or in case it is moved to other premises. In the event it is damaged or mislaid
obtain another copy from the area technical service.
These symbols relate to specic messages in this booklet
ATTENTION:
this warning symbol found in various points of this booklet points to the need to read carefully and
understand the message it refers to, since non compliance with the instructions may cause severe damage
to the stove and pose a hazard to the user's safety.
INFORMATION:
this symbol is used to highlight important information for proper stove operation. Failure to comply with the
requirements will aect use of the stove and operation may be unsatisfactory.

3
Our company declares that the stove complies with
the following standards for the European Directive CE
marking.
• 2004 /108 EC (EMC directive) as amended;
• 2006/95 EC (low voltage directive) as amended;
• 2011/65 EU (RoHS 2 directive);
• 2006/42 EC (machinery directive);
• The new CPR-Construction Products Regulation
No.305/2011 which concerns the building sector;
• For installation in Italy, refer to UNI 10683/98 or
subsequent amendments.The installer of the heat-
ing system must issue the declaration of conformity
according to L. 37/2008.
All local and national laws and European standards
must be met when installing the appliance;
• EN 55014-1; EN 55014-2; EN 61000-3-2; EN 61000-
3-3; EN 60335-1; EN 60335-2-102; EN 62233, EN
50581.
Information regarding safety
Please read this use and maintenance manual care-
fully before installing and activating the stove!
If you need explanations, contact your dealer or the
Authorised Service Centre.
• The pellet stove must only be operated in domestic
environments. This stove is controlled by a circuit
board making combustion fully automatic and con-
trolled; the control unit regulates the ignition phase,
5 output levels and the extinction phase, guarantee-
ing safe operation of the stove;
• The basket used for combustion allows most of the
ashes produced by pellet combustion to drop into
the ash pan. Nonetheless, check the basket daily as
not all pellets have high quality standards (use only
quality pellets recommended by the manufacturer);
Liability
With the delivery of this manual, we disclaim any civil
or penal liability for accidents resulting from partial or
total failure to comply with the instructions contained
herein.
We disclaim all liability resulting from misuse of the
stove, from incorrect use by the user, from unauthor-
ised changes and/or repairs, from the use of non-orig-
inal spare parts for this model.
The manufacturer disclaims any direct or indirect civil
or penal liability due to:
• Poor maintenance;
• Failure to comply with the instructions in the manu-
al;
• Use which does not comply with safety directives;
• Installation which does not comply with the regula-
tions in force in the country;
• Installation by unqualied and untrained personnel;
Standards and declaration of conformity
• Changes and repairs not authorised by the manu-
facturer;
• Use of non-original spare parts;
• Exceptional events.
• Only use wood pellets;
• Keep/store the pellets in dry and moisture-free
rooms;
• Never pour pellets directly on the burn pot;
• The stove must only be supplied with quality
pellets with 6mm diameter, of the type recom-
mended by the manufacturer;
• Before connecting the stove electrically, instal-
lation of the exhaust pipes with the ue must be
completed;
• The protective grate inside the pellet tank must
never be removed;
• The environment where the stove is installed
must have sucient air exchange;
• IT IS forbidden to operate the stove with open
door or broken glass;
• Do not use the stove as an incinerator; the stove
must only be used as intended.
Any other use is to be considered improper and
therefore dangerous. Do not place objects other
than wood pellets in the tank;
• When the stove is running, the surfaces, glass,
handle and pipes become very hot: they must
only be touched with adequate protection;
• Keep both the fuel and any ammable material
at an adequate safety distance from the stove.

4
• The appliance is not intended to be used by
persons (including children) whose physical, sen-
sory or mental abilities are impaired, or who lack
the experience or knowledge, unless they have
received supervision or instructions concerning
the use of the appliance by a person responsible
for their safety;
• Do not use the stove as step-ladder or support-
ing structure;
• Do not put laundry on the stove to dry. Any
clothes airers or similar implements must be kept
at a suitable distance from the stove. - Fire haz-
ard;
• It should be carefully explained to any elderly or
disabled persons and especially to children that
the stove material reaches high temperatures,
and they should be kept away from the stove dur-
ing operation;
• Do not touch the stove with moist hands, as it
is an electrical appliance. Always unplug the cord
before operating on the unit;
• The door must always be closed during opera-
tion;
Instructions for safe and ecient use
• The stove must be electrically connected to a
system equipped with an earth conductor as re-
quired by regulations 73/23 EEC and 93/98 EEC;
• The system must be adequately sized for the
stove's stated electrical power;
• Do not wash the stove's internal parts with wa-
ter.
Water might spoil the electrical insulations, and
cause electrical shocks;
• Do not expose your body to hot air for a long
time. Do not overheat the room where you are
and where the stove is installed.
This may harm your physical conditions and
cause health problems;
• Do not directly expose plants or animals to the
ow of hot air;
• The pellet stove is not a cooking appliance;
• During operation the outer surfaces may be-
come very hot. Do not touch them unless using
suitable protections

5
The pellets are tiny cylinders of pressed wood,
produced from sawmill and wood processing
residues (chips and sawdust).
The pellets, as foreseen by current Italian
legislation governing the commercial features
of fuels, must be exclusively produced with
untreated wood sawdust, without any other
added materials.
The binding capacity of lignin, which is contained
in wood, allows a compact product to be obtained
without adding any additives and foreign
chemicals to the wood, thus obtaining a natural,
high yield fuel.
Using low grade pellets or any other unsuitable
material may damage some boiler components
and aect proper operation: this may result in
Quality features of the pellets
voiding the warranty and relevant manufacturer
liability.
For our boilers exclusively use 6 mm diameter
pellets.
If the .it remains o for long periods of time, the
tank must be emptied from any residual fuel.
Store the pellets away from heat sources and not
in humid premises or with explosive atmosphere.
It is strictly forbidden to use any solid or
liquid fuel other than pellets to feed the .it.
Parameter
Diameter (D)
Length (L)
Water content (M)
Ashes (A) 32
Mechanical durability (DU)
Fine particles (< 3.15 mm)
Additives
Lower Caloric Value (Q)
Bulk density (BD)
Nitrogen (N)
Sulphur (S)
Chlorine (Cl)
Arsenic (As)
Cadmium (Cd)
Chromium (Cr)
Copper (Cu)
Lead (Pb)
Mercury (Hg)
Nickel (Ni)
Zinc (Zn)
Melting point of the ashes (DT) 3
M.U.
mm
mm
%us 1
%dm 1
%us
%us
%dm
MJ/kg us
kg/m3
%dm
%dm
%dm
%dm
%dm
%dm
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
°C
EN plus-A1 EN plus-A2
6 (± 1)
31.5 ≤ L ≤ 40
≤ 10 ≤ 10
≤ 0.7 ≤ 1,5
≥ 97.5 ≥ 97.5
< 1 < 1
≤ 2 ≤ 2
16,.5 ≤ Q ≤ 19 16.3 ≤ Q ≤ 19
≥ 600 ≥ 600
≤ 0.3 ≤ 0.5
≤ 0.03 ≤ 0.03
≤ 0.02 ≤ 0.02
< 1 < 1
≤ 0.5 ≤ 0.5
≤ 10 ≤ 10
≤ 10 ≤ 10
≤ 10 ≤ 10
≤ 10 ≤ 10
≤ 10 ≤ 10
≤ 100 ≤ 100
≥ 1200 ≥ 1100
1) us = unaltered state, dm = dry matter
2) Determination at 550°C
3) In this case, the ashes must be produced at 815°C

6
Dimensions
567
698
50622
648
1222
Diametro tubo scarico fumi T1
Diametro tubo entrata aria T2
Diametro andata T3M
Diametro Ritorno T4
S valvola sicurezza T5carico
T3 T4
T1
T2
T5
66,5
225
388
284,5
388
156 90
142
245 193,5
128,5
567
283,5 283,5
.it AQ
T1 ue gas exhaust pipe diameter
T2 air inlet pipe diameter
Flow Diameter T3
Return Diameter T4
T5 safety valve discharge

7
Diametro tubo scarico fumi T1
Diametro tubo entrata aria T2
Diametro Mandata T3
Diametro Ritorno T4
S valvola sicurezza T5carico
T3 T4
T1
T2
T5
Dimensions
.it AQ
T1 ue gas exhaust pipe diameter
T2 air inlet pipe diameter
Flow Diameter T3
Return Diameter T4
T5 safety valve discharge

8
Technical data
Parameter
Unit of
measure-
ment
.it AQ 20 .it AQ 24 .it AQ 28 .it AQ 33
Maximum thermal ow rate (nom. - red.) kW 19.3 - 5.26 23.12 - 5.26 27.34 - 8.95 32.41 - 8.95
Heat output (nom. - red.) kW 18.22 - 5.08 21.96 - 5.08 25.86 - 8.57 30.48 - 8.57
Thermal power to water (nom. - red.) kW 13.98 - 4.2 17.86 - 4.2 20.35 - 6.51 24.38 - 6.51
CO at thermal power (nom. - red.) mg/m386.6 - 337.6 84.4 - 337.6 31.6 - 331.8 29.1 - 331.8
CO at thermal power at 13% O2 (nom. -
red.) mg/m354.9 - 356.6 55.9 - 356.6 19.1 - 330.9 18,4 - 330,9
Eciency at nominal - reduced power % 95.74 - 96.71 94.98 - 96.71 94.56 - 95.79 94.03 - 95.79
Average consumption (nom. - red.) Kg/h 4.03 - 1.08 4.89 - 1.08 5.58 - 1.83 6.61 - 1.83
Heatable surface cu.m. 350 400 510 600
Flue gas ow rate (nom. - red.) g/s 10.1 - 4.5 12.9 - 4.5 15.1 - 7.9 18.6 - 7.9
Draft Pa 12 12 12 12
Flue gas temperature (nom. - red.) °C 99.1 - 62.1 109.2 - 62.1 72.3 - 62.1 72.3 - 125.2
Boiler water content litres 50 50 60 60
Expansion vessel capacity litres 8 8 8 8
Max. operating pressure Bar 2.5 2.5 2.5 2.5
Pellet tank capacity Kg 42 42 57 57
Flue gas exhaust diameter mm 80 80 100 100
Air intake diameter mm 50 50 60 60
Heating connection Inch 3/4 3/4 230 230
Nominal voltage V230 230 230 230
Nominal frequency Hz 50 50 50 50
Max. electric consumption W 400 400 400 400
Heat stove weight Kg 230 230 290 290

9
Operating site
For proper operation and satisfying distribution of
the temperature the heat stove must be placed
in premises where the air required for pellet
combustion may ow (about 40 m3/h must be
available according to installation regulations and
standards in force in the country). The volume of
the room must not be less than 30 m3.
The air must enter through permanent openings
on the walls (near the stove) to the outside with
minimum section greater than 120 cm2.
These openings must be protected by a grille
both inside and outside and constructed so as
not to be obstructed in any way.
The air may also be taken from rooms adjacent
to the one to be ventilated as long as they are
equipped with external air intake and are not used
as bedroom or bathroom and where there is no re
hazard such as: garage, wood sheds, ammable
material warehouses in strict compliance with the
current rules.
Installation of the heat stove is
not permissible in bedrooms,
bathrooms, and where another
heating appliance is already installed
without independent air inow (replace,
stove etc.).
It is forbidden to place the stove in premises
with explosive atmosphere. The oor of the
premises where the stove is to be installed
must be suitably sized to withstand its
weight.
In the event of ammable walls maintain a
minimum rear distance (A) of 10 cm, side
(B) of 40 cm and front of 150 cm. In the
event of especially delicate objects such
as furniture, curtains, sofas considerably
increase stove distance.
The two side walls of the heat stove must be
accessible for maintenance by authorised
technicians.
40 cm
>120 cm2

10
PLEASE NOTE:
- the appliance must be installed by a qualied
technician possessing the technical-
professional requirements according to
Ministerial Decree 37/2008 who, under their
own responsibility, shall assure compliance with
the standards according to good workmanship.
- the boiler must be connected to a central heating
system and/or domestic hot water production
network compatible with its eciency and
output.
- all national, regional, provincial and municipal
laws and regulations in force in the country
where the appliance is installed must also be
taken into account.
- ensure the oor is not ammable: if required
use a suitable platform.
- in the room where the heat generator is
to be installed there must not be any pre-
existing hoods with extractor or collective type
ventilation ducts, nor may they be installed.
Should these appliances be in rooms next to
and communicating with the installation room,
it is forbidden to simultaneously use the heat
generator, if there is a risk that one of the two
rooms might be in a vacuum with respect to the
other.
- installation in bedrooms or bathrooms is not
admissible.
- for water connections (see next chapter) it
is recommended to use exible pipes where
possible.
Distance from objects
It must be possible to inspect the heat stove from
all sides, hence a distance of at least 40 cm on
the rear and sides must be complied with. It is
also recommended to keep the pellets and all
ammable materials at an adequate distance
Operating premises
40 cm 40 cm
40 cm100 cm

11
Water connections
This product has been designed and constructed
to work with closed vessel systems.
The safety valve (T5) discharge must always be
connected to a pipe suitable to withstanding the
high water temperature and pressure, and be
conveyed to the sewer drain.
Heat stove connection to the plumbing
system must be SOLELY carried out
by skilled personnel who are able to
perform installation with perfect workmanship
and complying with the provisions in force in
the country of installation.
The manufacturers disclaim any liability in
the event of damage to property or harm to
persons or failed operation, should the above
warning not be complied with.
Heat stove water connection
.it AQ 20/24
T4T3
T5
Suggestions for use
If heat stove installation calls for interaction with
another pre-existing system including a heating
appliance (gas boiler, methane boiler, oil  red
boiler etc.) contact quali ed personnel who
may then be responsible for system conformity,
according to the provisions of applicable laws.
System washing
In compliance with standard UNI-CTI 8065
and to protect the heating system from harmful
corrosion, scaling or deposits, it is very important
to wash the entire system before connecting
the heat stove in order to remove residues and
deposits.
After washing the system it is recommended to
use inhibitors to protect it against corrosion and
deposits.
Always install shuto valves upstream of the boiler,
in order to isolate it from the water system, should
it be necessary to move it in order to perform
routine and/or extraordinary maintenance.
These are all the more useful on the system  ow
and return piping if the heating system is on a
higher  oor than the boiler.
The pressure discharge pipe must provisionally
be connected to a jug or funnel to prevent water
from leaking and wet the structure and  oor in the
event of overpressure.
Safety valve exhaust pipe
.it AQ 20/24
T5
T4
T3
.it AQ 28/33
SYSTEM
FLOW
SYSTEM
FLOW
SYSTEM
RETURN
SYSTEM
RETURN
SAFETY
VALVE
VENT

12
Flue connection
The ue must have internal dimensions not
exceeding 20 x 20cm or diameter 20 cm; in case
of greater dimensions or poor ue conditions (e.g.
cracks, poor insulation, etc.) it is recommended
to insert a stainless steel pipe in the ue (lining)
of adequate diameter for its entire length, up to
the top.
Check with adequate instruments that there is
proper draft. This type of connection assures ue
gas extraction even in the event of temporary
power outage.
The base of the ue must be tted with an
inspection port for periodic check up and cleaning,
which must be done yearly.
Ensure a wind-proof cowl is installed according to
regulations in force.
Water connections
Flue gas exhaust connection
Filling up the heat stove
After making all the water connections, ll the
heat stove to check tightness under pressure of
all connections.
venting of any air in the system during this
operation is assured by automatic venting.
The COLD lling pressure of the system must be
1 bar.
Should the system pressure go below the
minimum gure set out above during operation,
the User must use the lling cock to bring it back
to the initial value.
For correct HOT operation of the heat stove,
boiler pressure must be 1.5 bar.
Vent
safety
valve
.it AQ 28/33 CAP BLOCKED
CAP LOOSENED BY
ONE TURN

13
Connection to an external duct with
insulated or double wall pipe
Flue connection
Connection to an external duct with
insulated pipe or double wall
In this case only insulated stainless steel pipes
(double wall) smooth on the inside must be used
(exible stainless steel pipes are forbidden)
fastened to the wall.
The base of the external vertical duct must
be tted with an inspection port (“T” tting) for
periodic check ups and cleaning, which must be
done yearly.
Perform airtight connection to the chimney
with ttings and pipes recommended by the
manufacturer. Ensure a wind-proof cowl is
installed according to regulations in force.
Check with adequate instruments that there is
proper draft.
Connection to chimney or ue duct
For proper operation, the connection between the
stove and the chimney or ue duct must not be at
less than a 3% angle, the length of the horizontal
branch must not exceed 2m and the vertical
branch between T ttings (change of direction)
must not be less than 1.5m. Check with adequate
instruments that there is proper draft.
The base of the external vertical duct must be
tted with an inspection port for periodic check
ups and cleaning, which must be done yearly.
Perform airtight connection to the chimney
with ttings and pipes recommended by the
manufacturer.
Flue gas exhaust chimney
Avoid contact of the chimney with combustible
materials (e.g. wooden beams) and in any case
insulate them with reproof material. In the event
of pipes running through wooden roofs or walls it
is recommended to use suitable certied through
kits, available on the market.
In the event of ue re, turn o the stove,
disconnect it from the mains and never open the
door, then call the competent authorities.
Chimney
The chimney must meet the following
requirements:
• Have a cross-section and inner shape like that
of the ue.
• Have a useful outlet cross-section no less than
double that of the ue.
Flue gas exhaust connection
Insulate
external
ducting
Windproof
cowl
Inspection
Inspection
Flue

14
• The chimney coming out of the roof or in contact
with the outside (for example for open lofts)
must be covered with bricks and, in any case,
well-insulated.
• Be built in such a way so that rain, snow or
foreign objects do not enter the  ue and that
winds in any direction and inclination do not
hinder the exhaust of combustion products
(windproof chimney).
• The chimney must be positioned to guarantee
su cient dispersion and dilution of combustion
products and, in any case, outside of the re ux
area. The di erent dimensions and shapes of
this area depend on the inclination angle of the
roof making it necessary to use the minimum
heights.
• The chimney must be windproof and higher than
the peak.
• Any buildings or other obstacles higher than the
chimney must not be too close to it.
Flue gas exhaust connection
Chimney features
YES NO
NO
Heat stove Cycle On/O
Filling the pellet tank
The fuel must be  lled from the top of the stove by
opening the lid.
Pour the pellets into the tank.
To make the procedure easier perform the
operation in two steps:
• pour half of the sack content into the tank and
wait for the fuel to settle at the bottom.
• complete the operation by pouring the second
half;
• After  lling the pellets, always keep the fuel
tank lid closed.
The burn pot must be cleaned before
each ignition.
Never remove the protection grate
inside the tank; when  lling avoid
contact between the pellet sack and
hot surfaces.
Remove all packaging components from
the stove combustion chamber and from
the door. They might burn (instruction
booklets and sundry decals).
As the stove is a heating appliance, its outer
surfaces are especially hot. For this reason the
utmost caution is recommended during operation,
namely:
• Do not touch the housing of the stove and the
various components, do not go near the door, it
might cause burns;
• Do not touch the  ue gas exhaust;
• Do not perform any kind of cleaning;
• Do not discharge the ashes;
• Do not open the ash pan;
• Be careful to ensure children do not go close.

15
Ignition
Press button for a few seconds until the heat
stove starts.
Control panel
The button is used to ignite or extinguish the
heat stove and to quit programming.
The buttons and are used to adjust the
temperature, for programming display and fun-
ctions.
The buttons and are used to adjust the
heating power.
The button is used to set the temperature and
programming functions.
The upper and lower displays are used to view
the various messages.
The upper display will show
the word “Fan” and the lower
display the word “Acc”. During
this stage the appliance will
perform a diagnosis (about 20
seconds) on ue gas extraction.
The next stage “LOAD WOOD”,
indicates the pellets are lled
and the igniter will light up to
start the ame.
When the ue gas temperature
is at 50° C (about 10 minutes)
the heat stove will enable
ignition: the top display will then
read “FirE” while the bottom
display will read “ON”.
After this stage which lasts
5 minutes approximately the
top display will simultaneously
show the heating power (e.g.
“po6“) and ambient temperature
(e.g. “25C“), while the lower
display will show the system's
ow water temperature.
Control panel signals
Before igniting the heat stove ensure the pellet
tank is lled, the combustion chamber is clean,
the glazed door is closed, the plug is plugged in
and the switch at the rear is in position “1”.
The LED is on when parameter UT0
1 in the menu is other than OFF, thus
setting the weekly or daily program.
“SET”
LED SYMBOL DESCRIPTION
The LED is enabled every time the
pellets are being lled.
The LED ashes when the panel
receives a temperature/power change
signal from the infrared remote control.
The LED is on when the room
temperature reaches the gure set in
the SET Water menu.
The LED ashes to signal that the user/
technician menu is being accessed, or
that the temperature setting is being
modied.
The LED switches on when the water
circulation pump is in operation.
1
2
3
4
5
6
6
12
3
4
5
If the ame is not correctly ignited after 10 minutes,
the heat stove locks down: the upper display will
read “ALAR” and the lower display will ash the
words “NO ACC”: wait 10 minutes for the cooling
cycle to be completed, open the door, empty the
burn pot and proceed with a new ignition.
Heat stove Cycle On/O
PLEASE NOTE:
In the event there should be repeated failed
ignitions, but the pellets are fed properly, there
might be an issue connected to breakage of the
electrical igniter.
In this case, while waiting for a technician to
service it, the heat stove may be lit manually using
solid fuel cubes (re starters).
Do not use any ammable liquids for
ignition.
While lling do not let the pellet sack
come into contact with the hot heat
stove.

16
Heat stove extinction
To extinguish the heat stove
press the button for a few
seconds, until the upper
display reads “OFF”.
The 5 available speeds may be scrolled by
pressing the power increase key several
times. Set it to “0” to disable the fan.
In the case shown here the
hot air fan is o. The speed
in fact is set to “0”.
In the case shown here
the hot air fan is working
at speed 5, the maximum
available.
Press buttons and to respectively increa-
se and decrease the desired value.
Water temperature range: 30°C - 80°C
The pellets will immediately stop dropping while
the heat stove will continue operating until the
accumulated heat is completely exhausted, and
go out after 30 minutes at the most.
PLEASE NOTE:
The heat stove is equipped
with an automatism to clean
the burn pot after a certain
length of time: when this hap-
pens the ame is automati-
cally lowered and the display will read “PUL FIRE”;
after a few minutes the heat stove will resume normal
operation.
The heating power is adju-
sted with buttons and
. It is recommended
to set it at Po 9 for the rst
hours of stove operation.
To adjust water temperature press button
once only.
The upper display will show the words "Set H2o"
ashing while the water temperature is shown on
the lower display.
To adjust the room
temperature press the
button twice: the
lower display will show
the words "SET AIR"
ashing, whereas the set
temperature is shown on
the upper display.
Use buttons and to change the value.
Air temperature range: 7°C-40°C
Adjusting the work power and
water temperature
Room temperature adjustment
Hot air fan speed adjustment
The room fan located at the front of the stove may
be enabled or disabled.
The fan may be adjusted by selecting ve dierent
operating speeds.
To adjust the hot air fan proceed as follows: press
button twice to access the room temperature
setting menu.
This adjustment is only required
for switching thermal ventilation on
and o as the temperature on grid
outlet depends on heat stove status.
Manual ignition procedure:
• open the door;
• take a cube of solid fuel and place it on the burn
pot together with a handful of pellets;
• strike a match and light the solid fuel inside the
burn pot;
• wait a few minutes, close the door;
• perform the normal ignition procedure.
Heat stove Cycle On/O

17
To extinguish the heat stove, do not
unplug it but let the automatic extinction
cycle end: prolonged ue gas exhaust
fan operation is normal and may indicate that the
stove is still hot.
In case of low temperatures, moreover, ue gas
exhaust fan and circulating pump may still start
up for a few minutes with stove o, in order to
prevent possible formation of ice in the system's
pipes. In the event of a power outage, when the
Heat stove Cycle On/O
power supply is restored the heating controller
will expel the residual ue gas, increasing the
extractor's speed and displaying the words “Cool
FIRE”. Upon completing the cooling cycle, the
stove will restart automatically and go back to the
operating mode prior to the power outage.
Internal thermostat
Position of the internal room probe
Only upon completing installation it is
recommended to ensure the room probe is
extracted from its housing and away from the
stove's hot structure, to prevent detecting
incorrect temperatures.
The probe is located at the rear of the stove.
When using the internal thermostat, it is
recommended to always set a slightly higher
temperature by a few degrees (e.g. 22°C if you
wish to have 20°C in the room) because the
probe is in any case aected by the stove's hot
structure.
The external thermostat is not included with the
stove and is at the user's expense.
The stove may be temperature controlled even
by an external room thermostat. It is placed in a
middle position with respect to the installation
room and assures better consistency between
the heating temperature required of the stove and
the one it actually delivers.
Installation
Connect the two wires of the cable from the
thermostat installed on the wall to the connector
terminal. Insert the connector in the suitable
socket at the rear of the stove.
The heat stove may work with the “stove in
modulation” mode (standard) or in ECO-STOP
mode.
After connecting the external
thermostat the internal thermostat is
automatically disabled.
The heat stove is standard supplied
with ECO-STOP mode disabled.
External thermostat
Thermostat

18
Thermostat
ECO-STOP mode enabled
If this functionality is enabled, upon reaching the
set temperature the heat stove goes into minimum
operation for a certain time T1. If there is no new
temperature demand during this time, the heat
stove automatically goes out and the message
“STOP-FIRE ECO T OFF” will be displayed.
The heat stove will restart automatically only
if there is a demand for temperature from the
thermostat.
When the room temperature goes below the
gure set on the thermostat (e.g. 18°C) the heat
stove automatically re-ignites until reaching 20°
C again.
Operating example:
If the room temperature detected by the
thermostat probe (internal or external) is 15° C
and the one set on the thermostat is 20 ° C the
heat stove goes into full power and upon reaching
the target it goes into minimum power. The stove
will remain in this mode for 15 minutes and if the
room temperature remains higher than the set
temperature, the heat stove automatically and
temporarily goes out, displaying the words “ECO-
STOP“.
When the room temperature goes below the
gure set on the thermostat (e.g. 18°C) the heat
stove gets ready for automatic re-ignition and
then starts operating until reaching 20 ° C again.
Regardless of external thermostat operation, the
heat stove is tted with an internal thermostat that
works as follows:
“Stove in modulation” mode
Upon reaching the set temperature, the heat
stove will modulate power to the minimum, that is
for as long as power is required again. If despite
reduced power operation in modulation mode
the water temperature continues rising until it
exceeds the set one by 15° C and remains so for
at least 60 minutes, total heat stove extinction will
occur. “STOP-FIRE” appears on the display. The
subsequent automatic re-ignition occurs as soon
as the water temperature goes below 15° C with
respect to the set water temperature.
All automatic re-ignition operations,
either in case of low room temperature
or request for hot water, are possible if
the heat stove is on or in ECO-STOP mode. If
the user manually extinguishes the heat stove
with the power button, the heat stove does
not perform automatic re-ignitions when the
temperature changes or if there is a demand
for hot water.
If the domestic hot water kit is installed, it is
advisable to disable the ECO-STOP mode in
order to shorten response times to demands
for hot water.

19
The chronothermostat function is used to program
automatic cycling on and o of the heat stove
throughout the week.
To enter programming hold the button for
about three seconds, the upper display will
show the parameter “UT01” : press the button
several times and refer to the table below to
program the stove according to your needs. To
exit programming mode at any time press the
button .The chronothermostat parameters are
as follows:
Chronothermostat
Parameter Description Settable values
UT01
OFF; Day 1, ...,Day7
Chrono enable and disable.
Set day of the week
UT02 from 00 to 23Set current hour
UT03 from 00 to 60
Set current minutes
UT04 Reserved
Set technical parameters
UT05 From 00:00 to 23:50 with
10 minute steps
Adjust rst time of
heat stove ignition
UT06 From 00:00 to 23:50 with
10 minute steps
Adjustment of rst heat sto-
ve extinction time
UT07 Between on/o for days
from 1 to 7
Selection of days of the
week when rst time is ac-
tivated
UT08 From 00:00 to 23:50 with
10 minute steps
Adjustment of second heat
stove ignition time
UT09 From 00:00 to 23:50 with
10 minute steps
Adjustment of second heat
stove extinction time
UT10 Between on/o for days
from 1 to 7
Selection of days of the
week when second time is
activated
UT11 From 00:00 to 23:50 with
10 minute steps
Adjust third time of
heat stove ignition
UT12 From 00:00 to 23:50 with
10 minute steps
Adjustment of third heat
stove extinction time
UT13 Between on/o for days
from 1 to 7
Selection of days of the
week when third time is ac-
tivated
UT14 From 00:00 to 23:50 with
10 minute steps
Adjust fourth time of
heat stove ignition
UT15 From 00:00 to 23:50 with
10 minute steps
Adjustment of fourth heat
stove extinction time
UT16 Between on/o for days
from 1 to 7
Selection of days of the
week when fourth time is
activated
UT01: Enable and disable/chronothermostat and
set current day.
This parameter is used to set the current day of
the week or disable programming.
Press buttons and to select the desired
value as shown in the following table:
Example:
if today is Thursday you must select “Day 4”,
whereas if you wish to ignite the heat stove
manually (without programming) you must select
“OFF”, in order to disable the chronothermostat.
Press button to move to the next parameter.
UT02: Set current hour
This parameter is used to set the current hour,
press buttons and to select the current
time.
Press button to move to the next parameter.
UT03: Set current minutes
Press buttons and to adjust the current
minutes.
Press button to move to the next parameter.
UT04: Set technical parameters
Press button to move to the next parameter.
UT05: Adjustment of rst heat stove ignition time
This parameter indicates the time when you wish
to ignite the heat stove: set the desired time with
buttons and , with 10-minute steps.
Press button to move to the next parameter.
UT06: Adjustment of heat stove extinction time
This parameter indicates the time when you wish
to extinguish the heat stove: set the desired time
Display
To p MEANING
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
OFF
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Chronothermostat o

20
Display
top MEANING
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Display
bottom
ON1/OFF1-Yes or No
ON2/OFF2-Yes or No
ON3/OFF3-Yes or No
ON4/OFF4-Yes or No
ON5/OFF5-Yes or No
ON6/OFF6-Yes or No
ON7/OFF7-Yes or No
In the example below, the heat stove is lit on
Saturday and Sunday only.
Conrm and continue with button .
Day 1
Monday
o 1
Day 2
Tuesday
Day 3
Wednesday
Day 2
Thursday
Day 2
Friday
Day 2
Saturday
Day 2
Sunday
o 2 o 3 o 4 o 5 on 6 on 7
UT08 UT16
continue as above to set the second, third and
fourth ignition.
In case the stove is controlled by external ther-
mostat, when the thermostat reaches the pre-
set temperature, the heat stove display will read
“ECo TERM”.
The room thermostat does not imple-
ment the function of cycling the heat
stove on and o, but sets it to saving
mode.
with buttons and , with 10-minute steps.
Press button to move to the next parameter.
UT07: Select days of the week
Press the button to select the days of the
week, whereas by pressing button you enable
(ON) or disable (OFF) the heat stove ignition day
as shown in the following table:
Chronothermostat
Remote control
The remote control is used to adjust water
temperature, power and heat stove ignition/
extinction.
To replace the 3 volt
battery (CR 2025),
located at the rear of
the remote control,
prise the cover open
with a screwdriver,
replace the battery
complying with its
polarity.
Press key to ignite the heat stove, the heat
stove automatically enters the start up stage.
Press keys and to adjust water
temperature, while use keys and to
adjust operation power.
To switch o the heat stove press key ; the
heat stove display will read “OFF”.