Calux Uniflam Idro 24 kW User manual

Installation and Instructions for stove model
Uniflam Idro
(25-34 kW)
Dear Customer
First of all we would like to thank you for the trust you have placed in us when purchasing one of the Calux
products.
We have prepared this short manual for you in an attempt to make it as easy as possible for you to use our
product.
We also advise you to show the specific technical information given on the following pages to those in
charge of assembling the unit and making the product operational so that these operations can be carried
out as correctly as possible.

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Index
Preamble ...................................................................................................................................3
1 Gurantee ............................................................................................................................4
2 Technical features...............................................................................................................5
2.1 Dimensions and construction ......................................................................................5
2.2 Performance features..................................................................................................7
3 Installation (see this section with a tecnician) .....................................................................7
3.1 Installation of the product ...........................................................................................7
3.2 Heating system............................................................................................................9
3.3 Instructions for the estetical setting of the product....................................................15
4 Use of the product ............................................................................................................22
4.1 Proper operation check .............................................................................................22
4.2 Using the oven ..........................................................................................................24
5 Maintenance ....................................................................................................................27
5.1 Problems and solutions .............................................................................................30

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Preamble
This user’s manual has been edited by the manufacturer and has to be seen as part of the stove.
The information it contains has to be consulted by not technically qualified persons as well as by
technical service staff.
The purpose of this manual is to give all necessary information to ensure proper use and
installation of the heater.
Following the indications provided, is a guarantee of a long life and safe operation of the product as
well as a most economically use.
Drawings and diagrams have illustrative purposes. Due to the fact of continuous development and
improvement of the product, the manufacturer reserves the right to make necessary changes
without notice.
It is advisable to refer to this manual whenever it becomes necessary to work on the heater, so we
suggest you keep it close to the place of the heater where it can easily be found and accessed.
The manual is a document that belongs exclusively to CALUX Ltd and it is not allowed to be given to
third parties without a written permission from the company that holds the rights to it.
During planning, constructing and testing of the stoves the suggested criteria of the following
norms have been adopted: UNI EN 13240 (Room-heaters Fired By Solid Fuel - Requirements
And Test Methods), UNI 9841 (wood burning heaters with forced fluid circulation - Requirements
and testing), UNI 10 412 (hot-water heating - safety requirements), UNI 10683 (wood-burning heat
generators - installation requirements) and the Ministerial Decree of 01/12/1975 (containers of hot
fluids under pressure) and subsequent updates.
The manufacturer assumes no responsibility for any damage caused to persons or property due to
the not respecting of the simple rules of installation and use, described in this manual.
IMPORTANT:
If a technical intervention at the heater is necessary, the water entrance has to be closed and the stove has
to be disconnected from the electricity line. It may also be necessary to discharge the water from the stove.
It is necessary to test the product for a few days after the first start to make sure that the installation has
been done correctly.
In pursuit of continuous improvement of its products and customer satisfaction, CALUX reserves the right
to make any necessary changes without prior notice to raise the quality of their products.

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1. GURANTEE
Calux Srl. guarantees its products against any construction fault and any material defect, that has been
confirmed by the company, throughout the Country.
- 2 years for all components
- 5 years for boilers and exchangers
Repairs and replacements under guarantee of parts or products may be made, at the discretion of Calux
Srl., at the user’s address or at its own plant, charging only carriage costs. Apart from this repair or
replacement, the user may in no case make any claims for compensation for damages of any kind. The
parts or products replaced under guarantee are the property of Calux Srl. and they must be returned to the
latter at the user’s expense. Technical assistance work not under guarantee involves the fixed call-out
charge, costs of labour and materials required for repair according to the current spares price list.
The following are not covered by guarantee:
1. Damage during transport (scratches, dents, etc.);
2. Damage due to incorrect installation of the product or to defects caused by insufficiency or
unsuitability of the flue, wiring, water, power or drainage systems, or damage arising from
environmental conditions due to climate, etc.;
3. Damage caused by carelessness, negligence, tampering, misuse, or repairs made by unauthorised
personnel;
4. Parts made of ceramic, glass, brass, wood, handles, grips, gaskets, external pipes and any other
fittings;
5. Parts treated in galvanising bath, painted parts subject to wear and tear from fire;
6. Deformities associated with the natural and physical features of the materials used (any tile
discolouring);
7. Installation and regulation of the equipment;
8. Plant consultancy and convenience checks;
9. Maintenance, such as cleaning of filters, nozzles, burners, heat exchangers and circulators;
10. Anything that may be considered to be normal deterioration through use.
The equipment will be restored, within the time limits compatible with Calux Srl. organisational
requirements, following the user’s request to:
Repairs or replacements made under guarantee do not give rise to extensions or renewals of the said
guarantee. Any fault of the equipment must be reported by registered letter with A.R. to Calux Srl. within
two months from the date detected. No-one is authorised to alter the guarantee terms and conditions or to
issue other verbal or written ones, apart from Calux Srl. The Company is not liable for any damage caused
to persons or property from breakdown or forced suspension of use of the equipment.
Calux Srl. reserves the right, at any time and at its own final discretion, to make all the changes it considers
useful or necessary to technical data and features of its own products without this having any effect on the
above-mentioned general conditions.

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2. TECHNICAL FEATURES
2.1. Dimensions and Construction
Series Uniflam with Oven
Water inflow
1,5’’
Water
outflow 1,5’’

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Series Uniflam without Oven
Dimensions of
place requirement
mm
25 KW
34 KW
UNI25
UNI25F
UNI34
UNI34F
L1
580
580
780
780
L2
290
290
390
390
L3
150
150
150
150
L4
160
160
225
225
H1
1010
1500
1000
1500
H2
1050
1540
1120
1600
H3
300
300
310
310
H4
920
920
920
920
P1
570
570
570
570
P2
185
185
185
185
D
150
150
180
180
Oven Dimensions and Diameter of Tubes
Model
kg
Diameter
Fume Exit
ᴓ(mm)
Dimensions of the Oven (mm)
H
L
P
25 KW
UNI25
180
150
-
-
-
UNI25F
270
150
210
275
400
34 KW
UNI34
230
180
-
-
-
UNI34F
300
180
210
475
400
External Dimensions

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2.2. Performance features
The following table shows the specifications of our products in accordance with the provisions of
the standards (UNI EN 13240 and subsequent updates)
Main technical features
Uniflam IDRO 25 kW –(without oven)
Uniflam IDRO 34 kW –(without oven)
Dimensions
1050 x 580 x 570 mm
Dimensions
1050 x 780 x 570 mm
Global heating power
Output heating power
Heating power to the ambient
Heating power to the water
Boiler capacity
Max operating water pressure
Max boiler temperature
Efficiency
Average fuel consumption
25 kW
19 kW
3 kW
16 kW
28 lt
1.5 bar
75 °C
76 %
7 kg/h
Global heating power
Output heating power
Heating power to the ambient
Heating power to the water
Boiler capacity
Max operating water pressure
Max boiler temperature
Efficiency
Average fuel consumption
34 kW
25.8 kW
4 kW
21.8 kW
38 lt
1.5 bar
75 °C
76 %
8 kg/h
Max heatable volume
450 m3
Max heatable volume
620 m3
Boiler connection Ø
3/4"
Boiler connection Ø
3/4"
Uniflam IDRO 25 kW –with oven)
Uniflam IDRO 34 kW –( with oven)
Dimensions
1540 x 580 x 570 mm
Dimensions
1600 x 780 x 570 mm
Global heating power
Output heating power
Heating power to the ambient
Heating power to the water
Boiler capacity
Max operating water pressure
Max boiler temperature
Efficiency
Average fuel consumption
Oven max temperature
25 kW
19 kW
3 kW
16 kW
28 lt
1.5 bar
75 °C
76 %
7 kg/h
250 °C
Global heating power
Output heating power
Heating power to the ambient
Heating power to the water
Boiler capacity
Max operating water pressure
Max boiler temperature
Efficiency
Average fuel consumption
Oven max temperature
34 kW
25.8 kW
4 kW
21.8 kW
38 lt
1.5 bar
75 °C
76 %
8 kg/h
250 °C
Max heatable volume
450 m3
Max heatable volume
620 m3
Boiler connection Ø
3/4”
Boiler connection Ø
3/4”
3. INSTALLATION (see section with the installer)
ATTENTION: Please note that the installation of the product has to be done in conformity to all
national laws and local rules and regulations.
Following some simple advices for the installation of our products in accordance to the standards (UNI
10683, UNI 10412, UNI 7129 and subsequent updates).
3.1 Installation of the product
Before installation it has to be checked if the floor is able to resist the weight if the heater, ready for
use (thus also including the heat transfer fluid).
Make sure that the walls around the stove are not made flammable material and are not sensitive to
heat.

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Position the stove at least 80 cm from flammable material, if this is not possible, a thermal protection
has to be done (UNI 7129, UNI 10683).
If the floor is made of flammable material (eg. parquet) it has to be used a plate of fireproof material
under and around the oven. The measure in front of the oven has to be at least the height from the
ground to the fire mouth + 30 cm, but not least then 60 cm. To the other sides it has to be the distance
from the floor to the fire mouth + 20 cm, but not least then 40 cm.
Make sure to install the oven in a surrounding where its function is not affected negatively.
Place the heater on the floor and ensure the correct position by using a standard spirit level.
Make sure that the sum of the volumes of heated rooms directly from the product and heated them
through hot water supply is not higher than calculated by us in the experimental phase.
WARNING: Not proper calculated needs of warming can lead to malfunction of the product and
dissatisfaction of the customer.
Indoor positioning
Our product, both in the AIR and the IDRO version, is a heater that draws air that is necessary for its
combustion process directly from the environment to be heated.
For this reason and for the even more important reason of safety for the people using it, the heater
must be installed in a sufficiently ventilated place in order to guarantee a continuous flow of air at all
times.
It is therefore essential to make air vents connected to the outside. See example in figure 2.1
Figure 2.1: Example of making an air vent.
Detail A

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2.2 Heating system
CHIMNEY
The proper installation of the fume exhaustion ensures a proper operation of our heating
generators.
In normal use the chimney has to ensure then right depression (Draft) sufficient combustion
air and flue gas exhaust (Smoke), this it is essential for a successful functioning of the stove.
Following are suggestions we would like to give out of our checks and theoretical calculations:
Respect the right balance between cross-sectional and vertical tubes, in all cases it is not
recommended to use chimneys with a height of less than 3 meters or more than 10 meters.
It is recommended to consult for the installation of the fireplace the regulations regarding the
size of the flue (UNI 9615, UNI 7129 and subsequent updates).
WARNING: We do not recommend the use of rectangular sections with ratio is bigger than 1.5.
Install the pipe to seal the combustion products.
The proper isolation and insulation of the flue (by using steel wool or ceramic fiber to ensure
high-temperature gas), especially in the outer segment exposed to the weather to avoid the
risk of condensation.
WARNING: The formation of condensation water inside the chimney can cause the absorption
of ashes and the formation of deposits that can cause problems to the product (f.es. too much
smoke).
Have constant section throughout its vertical development free from obstacles and
bottlenecks. All angles have to be bigger than 45 ° to the vertical.
The construction of the chimney in stainless steel or aluminium, round and with a smooth
inner surface.
WARNING: You may use our product in smoke systems with divided stoves only if this is in
accordance with statutory regulations and laws at local, national and European level
(Ministerial decree of 12.01.1975, UNI 7129).

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Another important element of the system is the chimney flue. This, according to the standards (UNI 10683,
UNI 7129 and subsequent updates), should meet the
following requirements:
- Have the insight material equivalent to that of the tube.
- Have a fume exit of at least twice the size of the inner section of the chimney, to facilitate the release of
smoke.
- Be impervious to rain, snow and foreign bodies and being save against wind, in terms that the fume exit is
also ensured in the case of strong wind.
The chimney cap should be positioned at least 50 cm over the rooftop, to guarantee an efficient discharge
of combustion into the atmosphere. Not respecting this minimum distance could lead to a reflow of the
combustion and counterpression in the cinmney
Separate flues on a rooftop should have a minimum distance of at least 2m. The distance to other externals
like buildings or trees should be at least 8m.

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HEATING
To be used in the right way our stoves need to be connected to a suitable plumbing.
WARNING: Do not use in any manner the stove without having it first connected to a suitable
water supply. This operation beyond the termination of the guarantee can do irreparable damage
to the product.
ATTENTION: Our heat generators can be connected only to systems with an open expansion tank.
It is strictly forbidden to connect the stove to systems with a closed expansion tank.
For the construction of a thermal system with open expansion tank its considerable to follow the
instructions provided by national rules. Following some indications given by UNI 10412 and
subsequent updates:

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- THE PLANT SHOULD ONLY BE LOADED BY NATURAL FALL FROM THE EXPANSION VESSEL AND
ABSOLUTELY NEVER DIRECTLY FROM THE WATER SYSTEM (Water in the network has a higher
pressure than our generator can take).
NB: THE MAXIMUM PRESSURE OF WORKING OF THE GENERATOR SHOULD NEVER EXCEED 1.5 BAR
The expansion vessel must consist of a covered container located above the highest point reached
by the water in the system.
- Safety tubes, loading and venting must be protected from freezing in case this may occur
- The safety pipe needs to connect the highest part of the generator with the atmosphere and
have no counterslopes, except in cases when it is intended to come out in the
top of the tank.
- The inlet pipe needs to pool the lower part of the generator with the lower part of the expansion
and does not have to have counterslopes that prevent the movement by gravity into the circuit
(security and inlet pipes, generator, expansion vessel).
The vent tube communicating with the outside must have at least the same size of the
safety pipe. As vent pipe can also be used the overflow pipe - which has at minimum the size of
the security tube.
Where applicable it can be useful to install the heater on a lower level compared to the radiators
to help finishing the thermal energy.
It may be convenient to use a water softening filter to reduce the formation of limestone in case
of very hard water.

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SCHEDULE OF THE WATER CONNECTION:
1. Stove
2. Open expansion valve
3. Electronically central
4. Circulator
5. Immersion sonde
6. Security tube
7. Sanitary water ingress
8. Sanitary water exit
9. Valve of thermic outgo
10. Outgo of heating water
11. Backflew of hot water
12. Tube to load the product
13. Tube to unload the product
14. Valve of sfere
15. Tube in case of overload
16. Fume tube in inox
17. Cap
18. Collector

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ISTALLATION WITH STOVE AND WALL BOILER
1. Stove
2. Open expansion valve
3. Electronically central
4. Circulator
5. Immersion sonde
6. Security tube
7. Sanitary water ingress
8. Sanitary water exit
9. Valve of thermic outgo
10. Outgo of heating water
11. Backflew of hot water
12. Tube to load the product
13. Tube to unload the product
14. Valve of sfere
15. Tube in case of overload
16. Fume tube in inox
17. Cap
18. Collector
19. Valve of retake
20. Changer
21. Wall boiler
1. Stove
2. Open expansion valve
3. Electronically central
4. Circulator
5. Immersion sonde
6. Security tube
7. Sanitary water ingress
8. Sanitary water exit
9. Valve of thermic outgo
10. Outgo of heating water
11. Backflew of hot water
12. Tube to load the product
13. Tube to unload the product
14. Valve of sfere
15. Tube in case of overload
16. Fume tube in inox
17. Cap
18. Collector
19. Valve of retake
20. Basement boiler
21. Three way valve
ISTALLATION WITH STOVE AND CENTRAL HEATING BOILER

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CAUTION: The drain valve should be positioned at the lowest point of the water circuit.
IMPORTANT NOTICE: Please note that all pictures shown in the manual are provided free of charge
and just as indication. Due to this, Calux S.r.l. does not assume any responsibility.
3.3 Installation instructions for the aesthetical part of the product (UNIFLAM Series)
The UNIFLAM stove comes in two separate packages, one containing the pro-
product and the other containing the ceramic coating. For the assembly of the aesthetics a screw
driver or other tool to unscrew crossed head screws is needed.
WARNING: The following pictures showing the operation of fitting of the ceramics show stove
model UNIFLAM 34 KW with oven. The given instructions are applicable for the entire range of
UNIFLAM stoves. For the size and composition of the ceramics kit, refer to the summary table at
the end of this paragraph.
1. To assemble the front ceramics you have to remove the right panel of the stove, as shown in
figure 3.5.
2. Place the ceramics over the heating chamber on front of the oven.
Place the larger piece in the centre as shown in Figure 3.5.
3. Place the ceramics also over the oven.
Place the larger piece in the centre as shown in Figure 3.5.
4. Replace the right panel on the stove.

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5. For the positioning of the ceramics the hand bar has to be removed
6. Open the ash tray, unscrew the screws and remove the handle as shown in Figure 3.6.
The minimum room height
should be 2,80m
Figure 3.5: Front ceramics positioning
Figure: 3.6.
Only with
34kW stove

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7. Open the pottery ash tray. Place the larger piece in the centre, see Figure 3.7.
8. Replace the hand bar and re-fix it.
9. Place the side ceramics on the left and right side of the stove, take care to position the smaller
ones as last ones, as shown in Figure 3.8.
Figure: 3.7.
Figure: 3.8.
Only with
34kW stove

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CAUTION: To place the ceramics at the top of the stove, the cover plate has to be moved.
10. Unscrew the screw on the backside and open cover plate Figure 3.9.
11. Push the top cover in the front direction as indicated in Figure 3.10 with the effect that the top
can be raised up sufficiently to position the ceramics.
Figure: 3.9.
Figure: 3.10.
Top of the stove
Top cover plate
Screws to unscrew
Top of the stove
Top cover plate
Fixing system of the
cover plate

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12. Place the ceramics on the upper circle as shown in Figure 3.11.
13. To replace the cover plate is necessary to reposition the top by a small force in the direction
shown in Figure 3.12 to ensure the correct coupling between the two components. After
making sure that the cover is integral with the top, it can be fixed with the screw again.
Figure: 3.11.
Figure: 3.12.

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SMOKE VALVE REMOVAL
If it is necessary to remove the fume valve in order to simplify the ascetical assembly just
described or to perform any other service, following some instructions:
1. Remove first of all the knob for adjustment of the gas valve; figure 3.13.
2. Remove the screw holding the pin and remove it from its location see Figure 3.14.
Figure: 3.13.
Figure: 3.14.