Unico Dragon Series User manual

USER MANUAL

2
Q u a l it y m a k es t h e d i f f e re n c e .
Thank you for your trust and your choice of a Unico fireplace insert. We are
convinced that it will fully meet your expectations both in terms of aesthetics and
energetic parameters of the insert.
In order to make the most of the technical parameters of the Unico insert, as well
as to ensure perfect safety during its use, we kindly ask you to read carefully and
follow the instructions in this manual.
We wish you many years of trouble-free use of the Unico insert and countless
happy moments spent in the warmth of the fireplace.
President of the Board
Waldemar Wuczyński

3
1. General information and recommendations 4
2. Compliance with standards and regulations 4
3. Safety recommendations 4
4. Insert installation manual 5
4.1. Fire protection 5
4.2. Ventilation 6
4.3. Combustion air supply 6
4.4. Heating air circulation 6
4.5. Chimney 6
4.6. Connecting the Nemo insert to the central heating system 7
4.7. Notes on the first start-up 8
5. User manual 8
5.1. Fuel 8
5.2. Fuel feeding and firing up 9
5.3. Burning 9
5.4. Regulations 9
5.5. Cleaning the insert 10
6. Notes 11

4
1. General information and recommendations
The Unico Dragon fireplace insert is designed and
manufactured in accordance with the latest trends and
requirements for this type of devices. It is not only a
decorative element of the apartment, but also constitutes an
efficient source of heating that ensures proper thermal
comfort of the building at relatively low operating costs.
The requirement for proper heating, satisfactory aesthetic
impressions, and, above all, operational safety of the Unico
fireplace insert, is strict compliance with these instructions.
If the user fails to do so, the warranty on the insert will be
void, and the user will bear all consequences for improper
operation.
Never carry out any repairs or modifications of the insert
yourself, or the warranty will be voided.
2. Compliance with standards and regulations
Any installation, operation and maintenance works on the
insert must be carried out in accordance with the provisions
of all applicable national and European standards:
•PN - EN 13229:2002 as amended: PN - EN
13229/A1:2005, 13229/ A2:2006, 13229:2002/AC -
fireplace inserts with open fireplaces for solid fuels,
requirements and tests.
•Ordinance of the Minister of Infrastructure of April 12,
2002 on the technical conditions required for buildings
and their location (Journal of Laws No. 75 item 690)
•Ordinance of the Minister of Infrastructure of March 12,
2009 on the technical conditions required for buildings
and their location (Journal of Laws No. 56 item 461)
•Other national and local provisions should also be
complied with.
3. Safety recommendations
Unico fireplace insert is a device that is completely safe,
and provides satisfaction and joy of use when installed and
operated in strict compliance with safety requirements.
Please pay special attention and follow the
recommendations below:
•The insert should be installed and commissioned by a
specialist company with the appropriate qualifications,
experience and tools.
•The insert can be used when it, as well as the entire
installation, is in perfect technical condition.
Any operational malfunctions, damages and
irregularities should be immediately reported to the
installation company.
•The Unico insert is designed to work only with its door
closed. Using the insert with the door open is prohibited.
•During operation of the device, all its components are
heated, so any maintenance works should be carried
out with the use of protective gloves.
•Any servicing or maintenance works can be carried out
only with the fire extinguished.
•Tightness of the insert (tightness of the seals, proper
operation of the air damper) should be checked on a
regular basis (at least once a month).
Proper operation of the ventilation system
should be constantly monitored. In
particular, negative pressure should be
avoided in the room in which the insert is
used. This is extremely important when
using mechanical ventilation.
•The fireplace insert must be protected from children's
reach.
•The room where the insert is installed must be equipped
with a fire extinguisher.
•Use only original spare parts of the Manufacturer.
•Ensure regular maintenance of the insert according to
the instructions.
•Use only the fuel recommended in this manual.

5
4. Insert installation manual
4.1. Fire protection
The fireplace should be installed on a smooth and even
surface after checking its load capacity, taking into account
both the weight of the insert, as well as its housing. It is
recommended to make a foundation for the fireplace that is
min. 50 mm thick.
After mounting, the insert should be levelled with
adjustable feet.
The floor around the fireplace must be made of non-
combustible material, keeping the distances given
below:
The walls around the fireplace should be protected from
heat by using insulation made of non-combustible
materials.
The ceiling above the fireplace should be protected by
making a decompression chamber from insulating
materials. The minimum distances to be kept for the
foundation and installation of the Unico fireplace insert are
shown in Figure 1 and Table 1.
Table 1.
Do not place any objects made of flammable materials on
an insert without housing. It is absolutely necessary to
keep the appropriate distance of flammable objects from
the fireplace:
•min. 200 cm from the edge of the firebox in the
radiation area
•min. 5 cm from the edge of the insert housing outside
the radiation area
4.2. Ventilation
Fig.1
Installation of the fireplace insert must be a self-
supporting structure, without any direct connection to
the insert It should provide easy access to the insert
and its connections for servicing and inspection
purposes. The housing of the insert should be insulated in
such a way that its vertical and slanting surfaces do not heat
up over 120°C, and the horizontal surface (shelves on which
objects can be placed) - over 85°C.
The minimum cubic volume of the room in which the
fireplace insert will be installed should result from the
indicator of 4 m3/l kW of the nominal power of the insert,
but should not be less than 30 m3. For optimal working
conditions of the insert, proper ventilation of the room in
which it will be installed should be provided. The necessary
amount of ventilation air is 10 m3/h per 1 kW of nominal
insert power. If other heating devices are installed in the
room with the fireplace, ventilation should be provided so
that the amount of air for all devices is sufficient and that
they do not interfere with each other.
insert wall - room wall
10 cm
insert wall - insert housing wall
2 cm
insert floor - foundation
15 cm
air outlet grille - ceiling
60 cm
insulation material thickness -
min. 3 cm
walls and ceiling
insulation material thickness -
foundation
min 10 cm
combustion
air supply
non-flammable
material
flammable items
* H - absolute height from the ground
to the bottom of the fireplace
thermal radiation
impact zone

6
NOTE:
Extraction devices operating in the same room as the
fireplace or in a jointly ventilated room can pose problems.
4.3. Combustion air supply
It is absolutely necessary to provide sufficient combustion
air to the fireplace insert. In Unico inserts, this is done from
outside the room through a suction unit.
The suction unit is equipped with a connector for the air
duct with a diameter of 0 98 or 0 125, depending on the
model, with the possibility of mounting it in one of three
designated holes.
Fig. 2.
The section of the air duct that reaches and connects with
the insert must be made of non-combustible materials
(steel or aluminium sheet). The use of plastic pipes (e.g.
PVC), is strictly prohibited.
The other end of the air pipe must be protected with a
ventilation grille that must be cleaned regularly.
In the case of inserts with a lifted glass, it is recommended
to provide an adequate convection air flow. Otherwise it
may lead to an increase in the temperature in the fireplace
chamber, and, as a consequence, damage bearings and
other elements of the insert, as well as the fireplace
housing.
It is recommended to protect the air intake from dust and
sand from the outside, which may damage the air intake
control mechanism.
4.4. Heating air circulation
For proper heat dissipation from hot elements of the insert
and the pipe to the room, appropriate cross-sections of the
heating air inlet and outlet should be provided.
The minimum area of the cold air inlet (at the base of the
fireplace) must be 50 cm2/1 kW of power generated by the
fireplace, assuming that the fireplace is used with
convection.
The minimum surface of the hot air outlet grille (in the
upper part of the housing) must be 40% larger than the
surface of the inlet, assuming that the fireplace is used with
convection. When using grilles with a mesh, the hole
surfaces should be doubled.
For heat-storing use, the inlet and outlet grilles are
individually selected depending on the amount of
accumulated mass used.
Air grilles must be constructed in a way to prevent
clogging.
4.5. Chimney
One of the most important elements of the fireplace insert
installation is the chimney. Its proper performance often
has a decisive impact on the smooth and safe operation of
the entire system.

7
Fig. 3
Before installation, it is recommended to carry out a
technical assessment and obtain an opinion from an
authorized chimney cleaning company.
To connect the insert to the smoke duct, use a pipe made of
certified heat-resistant sheet with a diameter equal or larger
than the diameter of the outlet pipe of the fireplace.
To ensure proper draft and to prevent local sooting, it is
recommended to use pipe elbows with a slope of max. 45°.
The total height of the chimney must be min. 4m.
If the pressure in the chimney is insufficient (lower than the
one in the table for the given model of the insert), a draft
boosting device should be installed on top of the chimney.
4.6. Connecting the Nemo insert to the central heating
system
Fireplace inserts Unico with a water jacket can be used in
gravity or pump heating open systems as an independent
or supporting heating source. The installation should be
secured in accordance with the requirements of PN-B
02413:1991.
a) Open system
•The maximum pressure of the installation should be 1.9
bar.
•An open expansion vessel should be connected with a
pipe of ⌀min. 28 mm.
•The expansion vessel must be located above the
highest point of the installation, the overflow hole should
be 0 1".
•If the fireplace insert is to be installed with another
boiler operating in a closed system, a separating plate
heat exchanger should be used.
•Regardless of the type of installation, air vents should
be used in those places where there might appear air traps.
•The central heating installation should be made in such
a way as to always maintain the temperature of water
return to the fireplace above the dew point, i.e. approx.
50°C (e.g. by installing a thermostatic mixing valve
ensuring an appropriate return temperature). This is a
requirement for the warranty to be recognized in the
event of the insert malfunction. This prevents the insert
from humidity resulting from condensation, and hence
from corrosion.
.
Dragon inserts are equipped with the so-called system
thermal protection of
the floor
air inlet
50cm3 / 1kW of generated power
chimney connection
1.4x air inlet surface
thermal insulation
decompression chamber
(in the case of a wooden
ceiling, ventilate)

8
Fig. 4.
b) Closed (pressure) system
The Unico Nemo fireplace insert with a water jacket can be
used in closed heating systems as an independent or
supporting heating source. The installation should be made
and secured in accordance with the requirements of PN-EN
13229/A1:2005, 13229/A2:2006.
•The maximum pressure in the installation system should
be 1,9 bar.
•A diaphragm expansion vessel should be used.
•The insert should be secured by a 2.0 bar safety valve.
•The Unico Nemo fireplace insert should be equipped
with a water jacket cooler (coil) and a thermostatic
safety valve.
NOTE:
a) In order to facilitate installation, Unico Nemo fireplace
inserts are equipped with connections for installation on
both the right and left side of the body.
b) It is recommended to install fireplace insert accessories,
such as pump, valves, heat exchanger, expansion
vessel, etc., so that they are visible and easily
accessible.
4.7. Notes on the first start-up
•The first start-up of the insert must be made before
installing the fireplace.
•After the first usage of the insert, a check should be
made whether the central heating installation is filled
with water.
•If there is a risk of temporary temperature drop below
0°C, the central heating installation should be filled with
anti-freeze liquid.
•The use of corrosion inhibitors is recommended.
•During the first few hours of burning, the varnish
coating is burned out and, as a consequence, there
might be a specific, often unpleasant smell.
•Before the first use, the gaskets (in the upper part
of the chamber) used for protection during transport
must be removed.
5. User manual
5.1. Fuel
• The fireplace is designed for burning natural wood with
humidity not exceeding 20%.
rura bezpieczeństwa
rura przelewowa (do kanalizacji) K
Fig. 5.
Expansion pipe
Power supply
CH pump
CH return
Controller
Controller sensor
Safety pipe
Overflow pipe
Water supply
pipe
Power supply
Water supply
pipe
Controller sensor
Controller
CH pump
CH return
To sewage system
Diaphragm vessel
1.Safety valve
2. Thermal relief

9
The best fuel material are burning logs of high density
hardwood (over 500 kg/m3whose calorific value equals
about 2100 kWh/m2- such as beech, ash, oak,
hornbeam.
•Wood should be stored outdoors, in a dry and well-
ventilated place.
It is not recommended to burn coniferous wood in the
fireplace for a long time because of the resins it
contains, which can quickly lead to burdensome
soiling of the insert. In addition, softwoods are prone
to sparks, which can at times be dangerous due to the
possibility of sparks flying into the room when opening
the door.
•It is prohibited to burn any materials in the fireplace that
are not natural wood waste, in particular: chipboards,
varnished or stained wood, cardboard and paper, all
kinds of fabrics and plastics.
•It is prohibited to burn or otherwise use flammable
liquids.
5.2. Fuel feeding and firing up
a) Check whether the supply and extraction air systems
are not blocked.
b) Before loading fuel, clean the firebox of excess ash, but
not completely. Move the remaining ash under the rear
wall of the firebox to allow primary air to enter the
chamber from under the front strip.
c) Place thicker wood logs at the bottom of the firebox.
Gradually place increasingly smaller logs and top them
with finely chopped logs and kindling. Kindling
(preferably rolls of wood wool soaked in paraffin) should
be put on top of the pile and lit from the top, which is the
recommended method for Unico inserts, making burning
cleaner with less smoke emission, which, in turn, makes
the whole process more ecological and efficient.
d) Open the combustion air inlets completely.
e) Set fire to the kindling and leave the door slightly
open until the fire does not fade anymore after
closing.
f) Do not use any liquid kindling, gasoline, thinners, etc.
for the fireplace.
5.3. Burning
a) When the first load is burnt out and only embers remain,
you can add wood as needed to match the size of the
insert.
You should take into account that from burning 1 kg
of wood we obtain about 3.4 kW, so no more than
4.5 kg of wood should be put into a 15 kW insert.
Adding larger amounts of fuel at one time may
damage the insert.
b) Logs should be placed as much as possible to the
back of the firebox, so that during burning and sliding
they do not adhere to the glass and fall out when
opening the door.
.
c) The door should always be opened slowly in order to
prevent negative pressure and the gases escaping into
the room.
d) The intensity of combustion is controlled with the
adjustment slide.
5.4. Regulations
•Combustion air regulation
Primary air for combustion is supplied from outside to
the collector installed underneath the insert. A special
regulation system delivers it to the upper and lower
part of the firebox.
•Afterburning system
Extreme positions of the lever allow to completely shut
off or open the primary combustion air supply.
Each lever position in between allows to supply the
appropriate amount of air to the upper and lower parts
of the firebox according to demand.

10
The Dragon inserts are equipped with the so-called
afterburning system. Special channels (permanently
open, not adjustable, except for the use of a controller
with an automatic air damper) supply air to the slats in the
corners of the rear wall. This enables the combustion of
unburned gas residues, thus improving both the efficiency
of the insert and the cleanliness of combustion.
Air supply regulation
•Position 1 - max. to the left - the air is directed to the
firebox floor and the door - the most intense burning.
Position 2 - in the middle - the air is directed only above
the glass - reduced power. Recommended position for
the insert.
•Position 3 - max. to the right - the primary air is
completely shut off - operation in support when the wood
is burnt and only embers remain.
Note: the glass easily gets dirty in this
position.
The air opening direction is indicated by the symbol on the
bar as shown in the diagram below
open c l o s e d
5.5. Cleaning the insert
Systematic cleaning and maintenance of the fireplace insert
is required for its safe and proper operation, and also affects
its aesthetic appearance.
How to clean the insert:
•remove excess ash from the firebox chamber
•clean the walls and shelves in the upper part of the
firebox chamber from soot and other impurities
•clean the glass
Cleaning should be carried out only with the fire put out and
the firebox cool, using protective gloves.
Ash should be removed with a scoop and thrown into
a metal container with a lid or collected using a
fireplace vacuum cleaner.
Wall surfaces inside the combustion chamber should be
cleaned using a soft brush, and if there is soot - a spatula.
The fireplace glass should be cleaned with a special Unico
sponge - the material that the sponge is made from can
remove the most stubborn soot dirt. It can be ordered at:
[email protected] [phone]
NOTE:
Using chemicals that can run down the gasket significantly
shortens its life (due to built up scale) and can lead to
damage (cracking) of the fireplace glass.

11
Before the start of the heating season, a comprehensive
inspection of the insert should be performed and the
following points should be checked:
• any blockages and tightness of the ducts supplying
combustion air, cleanliness of the chimney and its
connections,
• the quality of the gaskets (it is recommended to replace them
with new ones),
• the condition of ceramic plates inside the firebox - in case of
noticeable defects it is recommended to replace them with
new ones. If there are cracks, there is no need to replace
the ceramic components, as it does not affect the
operation of the fireplace.
6. Notes
a) Never use the fireplace insert with the door open.
b) Take proper care if there are children in the room where
the fireplace is used. The glass temperature can often
exceed 300°C, which, when handled carelessly, can
cause burns or fire.
c) In case of any malfunctions or if you need to put out the
fire, close the air intake damper. If this is not enough,
use a spatula to collect the contents of the hearth into a
metal bucket and take it outside the building.
Under no circumstances should you put
out the fire with water!
d) The fireplace insert housing should be designed and
made in a way as to allow any assembly and
disassembly of the entire insert or part of it without the
need to damage it.
e) When installing the insert with the PowerLIFT lifting
glass, it is advisable to place inspection grilles at the
height of the bearings.