Page 1
TECHNICAL INFORMATION,
INSTALLATION
AND OPERATING INSTRUCTIONS
Cabinet Warm Air Heater
for oil burner
BG SERIES
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2
Dear Customer,
We thank your for having chosen a BG series WARM AIR HEATER: an innovative product, both modern and
of high quality, that will ensure you comfort, tranquillity and safety for many years. This in particular if the
heater is entrusted to a DESA Italia After-Sales-Service unit, which, with its specifical
ly trained personnel,
can maintain the heater at its highest level of efficiency, with low operation costs, and which has original
spare parts available, if necessary.
This instruction manual contains important indications and suggestions that must be followed to allow an
easy installation and an optimum use of the BG series WARM AIR HEATER
.
Thank you again
DESA Italia s.p.a.
RANGE
In this Manual we refer to the TYPE. The following table shows the range and the correspondence between Type and
Commercial Name.
TYPE MODEL
1 BG 50
2 BG 70
3 BG 90
4 BG 110
5 BG 190
6 BG 260
7 BG 390
GUARANTEE
BG series WARM AIR HEATERS are covered by a SPECIFIC GUARANTEE that starts on the date of purchase of the
device, which date the buyer should document; if he cannot do this, the guarantee starts on the date of manufacture of
the device.
The guarantee conditions are specified in detail in the GUARANTEE CERTIFICATE, supplied with the device, and we
suggest you read them carefully.
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INDEX
GENERAL INFORMATION:
RANGE 2
GUARANTEE 2
INDEX 3
GENERAL NOTES 4
FUNDAMENTAL SAFETY RULES 5
DESCRIPTION OF THE HEATER 6
CONTROL PANEL 7
IDENTIFICATION 8
WIRING DIAGRAM 9
FITTER:
RECEIPT OF THE PRODUCT 10
DIMENSIONS 10
HANDLING AND TRANSPORT 11
POSITIONING 11
MOUNTING THE DISTRIBUTION PLENUM 12
FITTING THE DOUBLE THERMOSTAT 14
SETTING THE DOUBLE THERMOSTAT 15
DUCTING 16
FIXED PROTECTIONS 16
ELECTRIC CONNECTION 16
DISCHARGE OF COMBUSTION PRODUCTS 18
INSTALLATION OF THE BURNER 19
ADJUSTMENTS 19
AFTER SALE SERVICE:
FIRST START-UP PREPARATION 21
FIRST START-UP 22
CONTROLS 24
CHECKS 24
MAINTENANCE 25
TROUBLE SHOOTING 27
NOTES 30
In some parts of the Manual, we use the following symbols:
ATTENTION: For actions that require special care and adequate
Preparation.
FORBIDDEN: For actions that absolutely MUST NOT be taken.
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GENERAL NOTES
This Instruction Manual is an integral part of the device and as such must always be kept with the device. This is also
the case when the heater is sold to another user. The Manual must therefore be conserved and consulted carefully
before any action. In the case of damage or loss, you can at any time ask the local After Sales Service for a copy of the
Manual.
After removing the packaging, first make sure that the contents are complete and undamaged. If the heater does not
match with the Manual in any way, contact the Agency that sold the heater.
Installation of the BG series WARM AIR HEATER must be carried out by qualified companies under Law 5 March 1990
n°46. On completion of the job, they provide the owner with a declaration of conformity of the correctly carried out
installation, that is according to the current applicable Norms requires and according to the indications provided by the
Manufacturer in this Instruction Manual.
The heaters have been manufactured for room heating and they must be used for this purpose, compatibly with their
performance characteristics. The Manufacturer accepts no contractual or extracontractual responsibility for damage
caused to people, animals or property, due to errors in installation, adjustment and maintenance or to improper use.
Excessive temperature represents a risk for health and a waste of energy. Avoid leaving rooms closed for long periods of
time. Open the windows periodically to ensure an adequate air change.
During the first start-up, there may be smells and smoke due to evaporation of the liquid used to protect the heat
exchanger during storage; this is a normal phenomenon that will disappear after a brief operation time. The rooms must
be adequately aerated.
On leaving the heater unused for a long period, you should carry out at least the following operations:
• Turn off the main heater switch and the main plant switch.
• Close the main fuel supply valve.
If the heater is not used for a long period of time, we suggest you contact the After Sales Service or other professionally
qualified personnel for restarting.
All heaters must be fitted exclusively with original accessories. The Manufacturer is not responsible for any damage
caused by improper use of the heater and by the use of accessories that are not original.
All references to Law, standards, directives and technical rules in this manual are to be considered as informative only
and valid at the date of printing of the Manual. The enforcing of new dispositions or the alteration of current ones do not
create any Manufacturer obligations towards third parties.
Repairs and maintenance must be carried out by the After Sales Service or by qualified personnel as specified in this
Manual. Do not alter or tamper with the heater: this can create dangerous situations and the Manufacturer will not be
responsible for any damage.
The systems that must be installed (oil pipes, electrical supplies, etc.) have to be suitably fastened and must not
represent any obstacle that could cause tripping.
The Manufacturer is responsible for conformity of his product to laws, directives and instructions standards current at
the date of sale. Knowledge and observation of legislative instruments and of standards for the design of systems, and
for installation, operation and maintenance are the exclusive responsibility of respectively the designer, the installation
personnel and the user.
The Manufacturer is not responsible for failure to observe the instructions in this Manual, for the consequences of any
operation carried out that is not specifically foreseen, or for any translations causing erroneous interpretations.
The heater is designed for operation at the thermal power and the airflow rate as specified in the Technical Data
Chapter. A thermal power that is too low and/or an airflow that is too high can lead to condensation in the flue, with
consequent irreparable corrosion to the heat exchanger. A thermal power that is too high and/or an airflow that is too
low cause abnormal overheating of the heat exchanger with consequent actuation of the safety systems and damage to
the heat exchanger.
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FUNDAMENTAL SAFETY RULES
The use of devices that employ electrical energy and/or fuel oil requires the observance of some fundamental safety
rules such as:
Children ad unassisted disabled persons must not use the warm air heaters.
Do not operate electrical equipment such as switches, electric household equipment etc if you can smell fuel or other
combustibles. In this case:
• Open the doors and windows to aerate the room.
• Close the fuel supply valves.
• Call in quickly the After Sales Service or other professionally qualified personnel.
Do not touch the heater if you are barefoot or if parts of your body are wet.
Do not carry out any cleaning or maintenance operation without first deactivating the heater by setting the main system
switch to "OFF" and without first closing the fuel supply.
Do not alter the safety and adjustment systems without prior authorisation and indications by the heater Manufacturer.
Do not pull, detach or twist the electric cables that exit the heater, even if the heater is not connected to the electrical
supply.
Do not open any doors that access the inside of the heater without turning the main system switch to "OFF".
Do not abandon or leave available to children the heater packing materials (cartons, nails, plastic bags, etc.), as these
are a potential source of danger.
Do not install the heater near flammable material, or in areas where there is a corrosive atmosphere.
Do not place any object on the heater or push anything through the grilles in the casing nor in the flue ducts.
Do not touch the flue ducts as during normal operation these can reach high temperatures and represent a risk.
Do not use any adapters, multiple sockets and cable extensions for the electrical connection of the heater.
Do not install the heater in the open air nor where it could be subject to atmospheric events.
Do not install the heater directly in limited spaces without adequate ventilation, as the burner air suction can create a
pressure drop in the room and consequently cause serious problems.
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5 5
4
3
6
7
10
9
8
15
11
12
13
14
2
1
2
2
16
2
DESCRIPTION OF THE HEATER
The warm air heater with fuel oil burner is a device that heats ambient air using thermal energy produced by
combustion.
An airflow produced by a centrifugal fan is in contact with the heat exchanger wall, so heat is exchanged with no
intermediate fluid. The combustion products, after losing heat, are expelled. This system allows considerable reduction
of installation and operating costs, and is particularly well suited to applications where use of the heater is intermittent
or occasional. During the summer, the heater can also provide ventilation only.
GENERAL CONSTRUCTION FEATURES
The most important parts of the heater are:
• Combustion chamber with flame inversion in stainless steel type AISI 430 resistant to high temperatures, with low
thermal loading, of appropriate shape and volume.
• Tube bundle with oval section fire tubes and turbulence imprints to offer maximum heat efficiency.
• Flue collector at the rear.
• Plenum for direct air diffusion with horizontal guide vanes, each separately adjustable, on four sides.
• Outer casing consisting of removable panels in painted steel sheet.
• Heat insulation, anti-radiation, for the surfaces exposed to radiation from the heat exchanger.
• Centrifugal fan, high performance, with double air intake and low sound emission level.
The electrical system comprises:
Double thermostat Fan-Limit adjusted and electrically connected to offer the following functions:
• Function “FAN” (25-35°C), controls the fan start up approximately 60 seconds after ignition of the burner,
and stops the fan at approximately four minutes after the burner stops. This avoids the emission of cold air on
start-up, and allows the accumulated heat in the heat exchanger to be removed, guaranteeing complete
recovery before stopping.
• Function “LIMIT” (100°C), with Manual reset, stops burner operation if the air is overheated.
• Three way switch to allow heating, ventilation only in summer, and plant stoppage.
Type 1÷4
1. Distribution plenum
2. Air delivery
3. Inspection doors
4. Burner plate
5. Air inlet
6. Flame inspection
7. Double thermostat FAN – LIMIT
8. Chimney connection
9. Combustion chamber
10. Electric centrifugal fan
11. Control panel
12. Casing
13. Front fluegas collector
14. Fire tubes
15. Rear fluegas collector
16. Adjustable vanes
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Type 5÷7
1. Distribution plenum
2. Air delivery
3. Inspection doors
4. Burner plate
5. Air inlet
6. Flame inspection
7. Double thermostat FAN – LIMIT
8. Chimney connection
9. Combustion chamber
10. Electric centrifugal fan
11. Fan support plate
12. Transmission belt
13. Motor
14. Belt tightening
15. Control panel
16. Casing
17. Front fluegas collector
18. Fire tubes
19. Rear fluegas collector
20. Adjustable vanes
CONTROL PANEL
The control panel fitted to the heater allows all operations necessary for system running.
1. Function selector (HEATING / STOP / VENTILATION)
2. Steath gland
3. Cable gland
10
9
1211 1413
15
16
2
8
2
17
19 20 18
5
4
5
22
3
6
1 7
0
3
2
1
FAN - LIMIT
288-E
TA
0
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IDENTIFICATION
The BG warm air heater can be identified by the Technical Plate that shows the main technical and performance data.
It if gets damaged or lost, you should ask for a copy to the Assistance Technical Service.
MANUFACTURER
IDENTIFICATION
WARM AIR HEATER
Model
Serial Nr
Country PIN Code
Category Code
Type Year
Nominal heat rating kW
Thermal power delivered kW
Air flow-rate (+20°C) m3/h
Electrical supply
Maximum electric power taken kW
Maximum current taken A
Electric protection grade
Fuel used: oil
TECHNICAL DATA
Type 1 2 3 4 5 6 7
Total heat rating kW 46,8 71,1 93,0 104,6 190,0 258,8 391,0
kcal/h 40.300 61.200 80.000 90.000 163.400 222.600 336.250
Heat delivered kW 42,2 64,4 83,9 94,2 168,2 230,3 347,6
kcal/h 36.300 55.400 72.100 81.090 144.600 198100 298.950
Efficiency % 90,1 90,5 90,1 90,1 88,5 89 88,9
Pressure of the Combustion
chamber
Pa 18 20 25 8 2 39 32
Combustion chamber
volume
dm3
48,8 77,4 129,5 228,5 490,0 640,0 1050,0
Net smoke temperature °C 200 220 220 220 249 248 227
Consumption
- Oil
(4)
kg/h 3,95 6,00 7,84 8,82 16,0 21,8 32,9
Device type B23
Airflow +20°C
Nm3/
h
2.800 4.500 5.300 6.300 11.500 15.300 23.000
DT
°K 43 41 45 45 43 45 45
Thermostat settings
°C 25-35-100
Operation temperature
°C -5/+40
Electrical supply
230V 50Hz ~ 400V 3N 50Hz ~
Engine rating kW 0,25 0,59 0,73 0,73 2,20 3,00 4,00
Maximum absorbed current A 2,6 6,7 7,6 7,6 5,1 7,0 9,1
Electric protection degree IP 20
(1) Refers to conditions: 1013 mbar, 15°C, P.C.I. 8570 kcal/m3
(2) Refers to conditions: 1013 mbar, 15°C, P.C.I. 11070 kcal/kg – 5635 kcal/l
(3) Refers to conditions: 1013 mbar, 15°C, P.C.I. 10905 kcal/kg – 6285 kcal/l
(4) Refers to conditions: 1013 mbar, 15°C, P.C.I. 10200 kcal/kg
NOTE: On request, the heaters can be arranged differently to satisfy special efficiency requirements.
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WIRING DIAGRAM
Type 1÷4
Type 5÷7
G Three-phase fan motor
RTV Fan motor thermal cut-out
LV Line contactor
CV Function switch HEAT / STOP / VENT
LX Burner thermal safety stop relay
MG Main terminal strip
LM LIMIT thermostat (100°C)
FA Double thermostat FAN (25/35°C)
BC Neutral bus
FL Line fuses
F Auxiliary fuses
*TA Room thermostat
*IMT Differential switch
* External to the heater, to be installed by the user.
ALIMENTAZIONE
ELETTRICA GENERALE
230V 50HZ 3N
IMT
N
FL
MG
L
LMFA
ALIMENTAZIONE
BRUCIATORE
230V 50HZ 3N
TA
1 2 3 4 5 6
G
S
R
V
CV
TA
S
R
V
LM
MG
1 2
ALIMENTAZIONE ELETTRICA
BRUCIATORE
TRIFASE 400V 50HZ 3N
R
LINEA TERMOSTATICA
FA
3 4 5 6 S T N
11
LX
ALIMENTAZIONE ELETTRICA
GENERALE
TRIFASE 400V 50HZ 3N
N
BC
12
FL
IMT
FLL1FL
L2
L3
FL F
CV
RTV
G
LV
MG
21
LM FA
3 4 T
ALIMENTAZIONE ELETTRICA
BRUCIATORE
MONOFASE 230V 50HZ
5 6 SR
TA
N
11 12
GENERAL
ELECTRIC SUPPLY
230V 50HZ
GENERAL
ELECTRIC SUPPLY
230V 50HZ
BURNER 1-PHASE
ELECTRIC SUPPLY
230V 50HZ
BURNER 3-PHASE
ELECTRIC SUPPLY
400V 50HZ 3N
GENERAL 3-PHASE
ELECTRIC SUPPLY
400V 50HZ 3N
9
Burner activation line
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RECEIPT OF THE PRODUCT
The warm air heaters are supplied on wooden pallets
(bolted to the heater) and are protected by a carton
packaging (type 1÷4) or a bubblewrap (for type 5÷7).
The following items complete the supply:
A plastic envelope (A) containing:
• Instruction manual for the plant owner, installation
personnel and for the After Sales Service.
• Guarantee certificate.
• Label with bar code.
Further and only for type 5÷7:
• Diffusion plenum (B) to be assembled and fastened to
the heater.
• Self threading fastening screws.
• Instruction sheet for fitting the air diffusion plenum.
The manual is an integral part of the heater and you
must therefore read it and keep it with care.
DIMENSIONS
Type 1÷4 Type 5÷7
Dimensions 1 2 3 4 5 6 7
A 460 540 680 760 900 1000 1200 mm
B 750 800 900 1.080 1300 1500 1700 mm
C 1372 1472 1657 1772 2120 2120 2350 mm
X 228 228 228 228 351 401 451 mm
V 673 723 823 1003 1230 1430 1628 mm
Z 425 505 645 725 830 930 1130 mm
Weight (1) 112 140 151 214 437 525 650 Kg
(1) Net weight without burner.
X
A
C
B
V
Z
A
C
X
B
V
Z
A
B
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HANDLING AND TRANSPORT
Handling must be done by personnel with suitable equipment that has a lifting capacity adequate for the weight of the
heater.
If a forklift truck is used, widen the forks as far as possible. If a crane is used, hooking points are the eyes placed at the
top of the heat exchanger.
Type 1÷4 Type 5÷7
ATTENTION
Transport and handling must be done very carefully to avoid damage to the heater and danger to persons.
During transport and handling operations, do not stand near the heater.
If heaters are to be stacked, you must not stack more than one heater on another. Make sure the stacks created
are stable by carefully aligning the packages.
If a heater is to be moved by hand, make sure you have adequate personnel available with respect to the weight
of the heater, as shown in the paragraph “TECHNICAL DATA”, and according to the route to be followed.
Wear protective gloves at all times during these operations.
POSITIONING
The place of installation must be established by the plant designer or by a person competent in this field and must take
account of the technical requirements and of applicable Norms and Legislation, as usually specific authorisation are
needed (for example: urban planning, architectural rules, fire safety, environmental pollution, etc.).
The necessary authorisations should therefore be obtained before installing the heater.
For correct installation remember that the heaters must:
•
Be positioned on a surface that is level, dry and able to carry the weight.
•
Be positioned so that the distances allow correct airflow and allow normal operations of cleaning and
maintenance.
• Be at safe distances from flammable materials.
• Be near a chimney.
• Allow easy maintenance and control operations.
• Be placed in areas with ventilation openings according to applicable legislation.
Installation is NOT allowed:
•
In places where the atmosphere is aggressive.
• In narrow spaces or where the heater sound emission could be amplified by reverberation or resonance.
•
In corners where there may be deposits of dust, leaves or other materials that could reduce the efficiency of
the heater by obstructing airways.
•
Outdoor.
• In places with pressure drop conditions.
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Installing examples
MOUNTING THE DISTRIBUTION PLENUM
The heater is supplied with a distribution plenum that is fitted with adjustable guide vanes. The vanes should be
adjusted so that they can ensure a good air distribution:
• Allow adequate air distribution.
• Do not create excess resistance to air flow.
• Do not cause discomfort to people.
The vertical airflow guide vanes must be open. They must not be inclined more than 45° with
respect to the air flow direction. Air diffusion from one side only of the plenum is not allowed.
Safe distance
Guide vanes
orientation
In the middle of the
room – 4 sides outlet
On a wall
3 sides outlet
On a corner
2 sides outlet
1 SIDE OUTLET
NOT ALLOWED!
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1
1
2
3
3
2
On models type 1÷4 the plenum is already fitted on the
heater.
For transport reasons and/or for stacking, on models type
5÷7 the distribution plenum is supplied with the heater
but completely dismantled.
For assembly and installation, proceed as follows:
•
After positioning the heater at the area selected for
installation, remove the bubble wrap layer.
• Remove the supports (1).
•
Dismantle the grille panel and take out from the
fan space the lateral distribution elements of the
plenum.
• Refit the grille panel.
•
Proceed to assemble the angular support panels
(2) using the self-threading screws supplied with
the heater.
• Fasten the diffusion elements (3) using, again, the
self-threading screws provided.
•
Position the assembled plenum on top of the warm
air heater, making sure that the hole for the double
thermostat, at the top of the plenum, is turned
towards the front of the heater (the face where the
burner carrier plate and the control panel are
located).
•
Fasten the plenum to the heater using the
selfthreading screws provided.
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4
1
3
2
FITTING THE DOUBLE THERMOSTAT
On models type 1÷4 the double thermostat is already
fitted to the heater. Models type 5÷7 are supplied with
the double thermostat inserted in the seat of the burner
plate and electrically connected, to guarantee integrity
during transport of the heater with the plenum
dismantled.
For assembly after installing the plenum, proceed as
follows:
•
Take the double thermostat out of the burner plate
by unscrewing and sliding it out.
During extraction, pull out the thermostat (1)
carefully making sure it remains horizontal, thus
avoiding any twisting that could damage it.
•
Insert the double thermostat in the specific hole
(2) at the top of the plenum and fasten it using the
screws supplied with the part.
•
Fasten to the plenum the cable hose collars (3)
supplied with the unit.
•
Fasten the electric supply cable using the specific
cable hose collars (4) sited along the right hand
side of the heater.
The cable hose must be stretched between
the collars so that it does not touch hot parts
of the casing.
Before starting the heater, check the
settings of the double thermostat (25-35100°C).
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SETTING THE DOUBLE THERMOSTAT
The heater is supplied with the double thermostat already adjusted according to the following table:
FAN Function 25 – 35°C
LIMIT Function 100°C
If you need to check or re-adjust the thermostat operation settings, observe the following notes.
Legend:
1. White push-button for Automatic-Manual ventilation (if
present).
2. Electric connections for FAN function.
3. Graduated scale.
4. Holes for fastening.
5. Fan unit stop temperature indicator.
6. Temperature indicator for LIMIT safety actuation.
7. Slots for cable fastening. Pushing a screwdriver blade
in this slot opens the terminal so that the cable can be
inserted. On removing the screwdriver blade, the cable
is automatically fastened in the terminal.
ATTENTION
Make sure the cable is tight in the terminal
by pulling slightly.
8. Temperature indicator for fan unit starting.
9. Electrical connections for LIMIT safety function.
10. Red push-button to reset after safety lockout (where
present).
11. Metal bridge (where present).
ATTENTION
On models type 1÷ 4 the metal bridge 11 must be
present.
On models from type 5 to type 7 the metal bridge 11
must be removed.
Type 1÷4
Type 5÷7
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DUCTING
A part of the heated air can be sent via ducting to other rooms using the pre-cut hole (ø 150 for type 1÷2; ø 300 for
type 3÷7) at the top of the distribution plenum.
FIXED PROTECTIONS
In order to avoid accidental contact with moving parts, the heater must not be started without any one of the fixed
protections, which are:
• Lower front panel.
• Rear panel.
• Lateral grille panel.
• Burner cover.
ELECTRIC CONNECTION
Heaters leave the factory internally wired; they need to be connected according to the wiring diagrams on page 9.
The electrical connections must be carried out by professionally qualified personnel and according to current applicable
legislation, using the cable grommets on the control panel and the terminals provided. For the size of the supply line,
refer to the table shown below.
TABLE FOR ELECTRIC SUPPLY LINE SIZING
HEATER
TYPE
Supply Voltage
(V-50Hz)
Rating (1)
(W)
Max current
taken(1)
(A)
Line fuses
(2)
(A)
Auxiliary
fuses (2)
(A)
Conductor
section (3))
(mm2)
Earthing
cable
section (3)
(mm2)
1
230V 3N~
250 2,6 10 - 1,5 1,5
2
230V 3N~
600 6,7 10 - 1,5 1,5
3 230V 3N~
730 7,6 10 - 1,5 1,5
4
230V 3N~
730 7,6 10 - 1,5 1,5
5
400V 3N~
2200 5,2 10 2 1,5 1,5
6
400V 3N~
3000 7,1 12 2 2,5 2,5
7
400V 3N~
4000 9,2 16 2 2,5 2,5
(1) Without burner.
(2) Included in the supply fitted to the heater.
(3) The section of the supply cables ensures a voltage drop of less than 5% for a length of 30 metres.
1. Pre-cut hole.
2. Fitting with flange (not supplied).
3. Ducting (not supplied).
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1
2
0
0
ELECTRIC CABLE ENTRY
The electric cables connecting the heater must be adequately protected. To access the switchboard of the control panel,
proceed as follows:
•
Remove the lower front panel (1) of the heater by
slackening the fastening screws.
•
Remove the electric junction box cover (2) by
slackening the fastening screws.
•
Insert the connection cables in the specific
grommets.
• To make the connections to the supply line and to
the room thermostat, refer to the diagrams on
page 9.
•
For the connections to the burner, refer to the
instructions for the burner type.
The section of the cables and the fuse
characteristics must be coherent with the TABLE
FOR ELECTRIC SUPPLY LINE SIZING shown above.
On completion of the connection operations, reassemble
in reverse order to the above description.
Type 1÷7
The following points are compulsory:
•
Use a multi-pole automatic circuit breaker conforming to CEI-EN norms (contact aperture at least 3mm).
• Respect the connection L (Phase) - N (Neutral).
• Protect and fasten adequately the electric cables.
• Avoid direct contact with hot surfaces on the heater.
•
Make an effective earthing connection, making sure the earthing cable is slightly longer than the line cables so
that in the case of an accidental pull, the earthing cable will be the last to be detached.
The manufacturer cannot be considered responsible for any damage caused by failure to connect the heater to
earth ground) and/or by failure to observe the prescriptions in the wiring diagrams.
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DISCHARGE OF COMBUSTION PRODUCTS
The flue ducts and the connection to the chimney must be built in conformity with current applicable Norms and
legislation, using rigid ducting, being resistant to high temperature and to mechanical loads, and gas tight. The correct
position for the flue sampling take-off is shown in the drawing.
DIMENSIONS
TYPE
1 1 1 1
Ø 120 Ø 120 Ø 120 Ø 120
H 1175 H 1175 H 1175 H 1175
The chimney must ensure the minimum depression foreseen by current Technical Standards, considering zero
pressure at the connection between ducting and chimney (see table page 8).
Non insulated flue ducts are a potential source of danger.
Chimneys or flue ducts that are inadequately or badly dimensioned can amplify combustion noise levels and have
a negative influence on combustion parameters.
Joint seals must be made with materials that withstand temperatures of at least 350°C (for example sealants,
mastics, silicone products).
Avoid or at least limit horizontal ducts that must in all cases be sloped upwards.
Use ducts with smooth internal surfaces, in materials that can withstand high temperatures and chemical
corrosion by combustion products, of diameter equal to or greater than the flange on the heater.
Avoid sharp bends and section reductions.
Provide for a stub pipe to allow flue sampling.
Punto di prelievo
prodotti combustione
2 Ø
H
Ø
COMBUSTION PRODUCTS
SAMPLING POINT
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INSTALLATION OF THE BURNER
For installing the burner, making the electrical
connections and carrying out the necessary adjustments,
refer to the instruction manual supplied with the burner.
We suggest that the fuel supply lines be built according to
the figures here beside.
For oil versions an adequate filter must be provided
in the fuel suction line.
ADJUSTMENTS
BURNER COUPLING TABLE
The burners that can be used for best heater performance are the following:
RIELLO Oil Burners:
Type Burner
Burner
Nozzle 60°W Nozzle Code Electric
Model
Code (G.P.H.) supply
1 REG 5 3772200 n°1x1,00 1825027 230V 50Hz~
2 R40G10 3452021 n°1x1,50 1825037 230V 50Hz~
RG2 3737700 n°1x1,50 1825028
3 R40G10 3452021 n°1x1,75 1825037 230V 50Hz~
RG2 3737700 n°1x1,75 1825033
4 R40G10 3452021 n°1x2,00 1825037 230V 50Hz~
RG2 3737700 n°1x2,00 1825022
5 R40 G20 3452731 n°1x3,50 1825026 230V 50Hz~
RG 4S 3739600 n°1x3,50 1825024
6 RL 28 tc 3473207 n°2x2,25 1825023 230V 50Hz~
RL 28/1 tc 3472003 n°2x2,25 1825023
RG 5 S 3739900 n°2x2,25 1825023
7 RL 38 tc 3474107 n°2x3,50 1825024 230V 50Hz~
RL 34/1 MZ tc 3470100 n°2x3,50 1825024
BURNER ADJUSTMENT
Only qualified personnel can fit and adjust the burner, holding strictly to the instructions in the Burner Manual.
NB:
The adjustment of combustion air varies according to the characteristics of the chimney, and is done by acting on
the specific damper according to the instructions in the Burner Manual.
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IMPORTANT
If the heater is replaced, but the existing burner continues
to be used, make sure that:
•
The performance of the burner is coherent with
that required by the heater.
•
The length and diameter of the burner sleeve
correspond to the dimensions shown in the Table.
DIMENSIONS TYPE
1 2 3 4 5 6 7
P 80 80 80 80 150 130 130 mm
Ø max 120 120 220 170 170 220 220 mm
If the length is greater, the length must not be more than 20% greater than the value shown.
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Page 21
mimino
45°
FIRST START-UP PREPARATION
Before starting and testing warm air heaters, check that:
• The protective film has been removed from the
heater walls.
•
The air guide-vane orientation has been adjusted
according to the position of the heater and to the
needs of the room.
Use adequate safety equipment (gloves etc.).
You must open the air deflectors before installation.
Open the deflectors by taking hold of the ends.
•
The heater is correctly positioned and the distances
around the heater have been respected (see page
12).
• There is fuel available and the supply valves are
open.
•
The electrical connections to the supply and to the
components (burner, thermostats, etc) have been
made.
The phase - neutral connection must be absolutely
respected.
The earthing connection is obligatory.
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1
0
FIRST START-UP
After carrying out the preparation operations for the first
start-up, to start the warm air heater you must:
Position the plant main switch to “ON”.
• Activating the “VENTILATION” function
–
Set the function switch (1) to “VENTILATION” ¤.
The burner remains off and only the centrifugal fan
will start to circulate the room air at the inlet
temperature.
• Disabling the “VENTILATION” function
– Set the function switch (1) to “0” (OFF). The centrifugal
fan switches “OFF”.
• Activating the “HEATING” function
–
Adjust the room thermostat to the required
temperature (e.g. 18°C).
– Set the function switch (1) to “HEATING” .
The heater will go through the first stage of start-up and
approximately one minute after flame ignition, the fan will
start, delivering warm air to the room to be heated.
The heater will remain in operation until the required
temperature is reached; then, the contact on the room
thermostat opens, the burner stops and after a few
minutes (approximately four) the fan also stops.
Successive re-starts and stops are automatic according to
the temperature set, with no need for further action.
During the first start-up there might be the presence
of odours and smokes caused by the evaporation of
the fluid used to protect the heat exchanger during
the storage period. It is a normal condition that will
disappear after a short period of operation. It is
recommended to air the served rooms.
• Disabling the “HEATING” function
–
Act on the room thermostat or position the function
swtich (1) on “0” (OFF).
The burner stops immediately and after about 4 minutes
the fan stops too.
Never turn off the heater by removing the electrical
supply before the fan stops; this to avoid
dangerous overheating and actuation of the LIMIT
thermostat.
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In case of wrong switching on or working the generator will be able to make two different stop:
1. “BLOCK”, signalled by the luminous red push-button
on the burner.
After a “BLOCK” wait approximately 30 seconds
before resetting starting conditions.
To reset the starting conditions press the luminous burner
push-button and wait for the flame to ignite.
If restarting fails, this operation can be repeated 2-3 times
at most, then check:
•
The instructions contained in the burner manual.
• The Chapter “Preparation for the first start-up”.
• The electrical connections.
2. “OVERHEAT SAFETY STOP”
After an “OVERHEAT SAFETY STOP” wait approximately
10 minutes before resetting the starting conditions, or
turn on the ventilation function (page 21) to reduce the
waiting time.
– Press the reset button (1) on the LIMIT thermostat.
Or
– If the fan motor cut-out switch RTV has actuated, reset
by pressing the specific button inside the control panel
switchboard (only on types 5÷7
).
If this action fails, the operations can be repeated 2-3
times at most; then check:
• The Chapter “PREPARATION FOR THE FIRST
START-UP”.
•
The electrical connections.
•
The Chapter “CHECKS”.
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CONTROLS
ROOM THERMOSTAT
This must be installed in the room to be heated at a height above floor level of 1.5 m approximately, in a position
protected from currents of hot or cold air.
The thermostat controls start-up and stoppage of the heater to maintain the temperature near the value set. The
thermostat is not supplied with the heater but must be requested as an accessory.
OPERATION SWITCH
HEATING/STOP/VENTILATION
Placed on the heater control panel, this switch allows selection of the operation cycle:
•
Set to the symbol “heating", it programmes the heater so that the fan and the burner operate automatically
according to the heat demand.
• Set to the symbol “ventilation", it controls the heater excluding operation of the burner thus, operating with the
fan only, it allows summer cooling.
•
Set to the symbol “stop”, it stops the warm air heater. The fan operates for a certain time to remove the heat
accumulated in the heat exchanger.
CHECKS
To ensure correct operation of the heater, some
fundamental parameters must be checked. Switch on the
heater and:
•
Check that the fan unit starts approximately one
minute after burner ignition.
With the warm air heater in steady state (after
approximately 20 minutes of continuous operation) carry
out these operations:
•
Check that there are no fuel leaks.
•
Check the correct flow rate of the fuel measured
at the counter (where possible).
• Check that the settings of the double thermostat
are as indicated in the Chapter TECHNICAL
DATA.
• Check that the flue temperature is as shown in
the Chapter TECHNICAL DATA, with a tolerance
of +/-10°C.
•
Check that the double thermostat adjustments
are as shown in the Chapter TECHNICAL DATA.
• Check that the graduated dial of the double
thermostat indicates 50-60°C and that the LIMIT
switch does not operate.
•
Check that the temperature difference Dt
between air delivered (Tm) and air returned (Tr)
corresponds to that indicated in the Chapter
“TECHNICAL DATA” with a tolerance of ± 5°C.
•
Turn the double thermostat dial by hand to
simulate action of the LIMIT thermostat and
check that the burner switches off.
• Open the contact in the room thermostat and
check that this acts on the burner only and that
the fan unit does not stop at the same time.
•
Check that the current taken by the main motor
does not exceed nominal value on the number
plate.
• Check that the setting of the cutout protection
relay is adjusted to the nominal current value of
the motor (only for types 5÷7).
•
Check that the fan operates for approximately
four minutes after the burner is switched off,
before stopping.
IMPORTANT
• An excessively low thermal power and/or an
excessively high airflow rate can cause
condensation of the flue, with consequent
irreparable corrosion of the heat exchanger.
• You MUST check for the absence of
condensation within the heat exchanger
during operation. This check is done by
switching the burner off after approximately ½
hour of continuous operation, at the same
time checking via the chimney connection that
there is no trace of humidity in the flue
collector and in the fire tubes.
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2
1 2 9
8 7
6
10
6
7
4
3
1
2
9
3
8
5
1
4
2
3
MAINTENANCE
For good heater operation and conservation, we recommend you carry out periodical cleaning and maintenance
operations. Any operation of this type must be carried out by specialised personnel qualified for the function.
The operations must be done when the heater has cooled down, turning off both the electrical and the fuel supplies.
HEAT EXCHANGER CLEANING
Cleaning the heat exchanger must be done by qualified
personnel, and is regulated by specific prescriptions. The
operation should be done at least once a year, at the start
of the winter season, proceeding as follows:
Type 1÷4
–
Remove the inspection panel (1), the inspection door
(2) and the burner following the indications in the
specific manual, and extract the diaphragm (only for
models type 1÷2).
–
Clean the internal surfaces of the heat exchanger (3)
using brushes or other tools of suitable shapes and
sizes.
–
Remove the deposits that accumulate in the
combustion chamber (8) using a vacuum system
through the burner opening (9).
–
Remove the deposits accumulated in the rear fluegas
collector (4) using a vacuum system through the
chimney connection (5) (only for models type 1÷2).
Type 5÷7
–
Remove the inspection panel (1), the inspection door
(2), and the burner following the indications in the
specific manual.
–
Clean the internal surfaces of the heat exchanger (3)
using brushes or other tools of suitable shapes and
sizes.
– Remove the deposits accumulated in the combustion
chamber (8) using a vacuum system through the
burner opening (9).
–
Remove the deposits accumulated in the rear flue
collector (4) using a vacuum system through the
lateral inspection openings (10).
We suggest the use of protective gloves; when using
ladders or other means of access, all operations
must be carried out using suitable systems, in
conditions of complete safety.
Type 1÷2
Type 3÷4
Type 5÷7
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Page 26
PERIODICAL FAN MAINTENANCE
Type 1÷4
The motor is connected directly to the fan shaft.
The fan motor does not need any maintenance, but only periodical cleaning.
Type 5÷7
Cleaning the centrifugal fan requires mechanical removal
of dust and of any extraneous bodies deposited on or near
the rotor.
Periodically check the transmission belt tension. When
pressing at the centre, it should deflect by approximately
20mm. Adjust if necessary as follows:
•
Turn the generator off by setting the main switch on
the control panel to “OFF”.
•
Remove the protection grille.
• Slacken the four nuts (3) that fasten the motor
support.
• Tighten the belt (1) by acting on the screws (2),
until, when pressing at the centre, the belt deflects
approximately 20mm.
•
Tighten the four nuts (3) to fasten the motor
support.
Check that the motor and fan pulleys are aligned
correctly.
For these models too the fan motor does not require
maintenance but only periodical cleaning of the protective
cover of the cooling fan.
Type 5÷7
THERMOSTATS
The thermostats do not require maintenance save normal
cleaning of the external parts of the sensitive elements.
The LIMIT thermostats have fixed settings and
must not be tampered with.
The FAN thermostats are pre-set during
manufacture and we suggest you do NOT adjust
their settings.
The manufacturer is not responsible for any damage
caused by improper actions on the thermostats.
BURNER CLEANING
For burner cleaning, refer to the instructions in the burner manual.
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2
TROUBLE SHOOTING
ANOMALY
CAUSE
REMEDIES
THE GENERATOR DOES NOT WORK
EITHER IN VENTILATION OR IN
HEATING
No energy supply
Check electric connections
Check the line and auxiliary load fuses
THE GENERATOR DOES NOT WORK
IN SUMMER VENTILATION
No energy supply to the fan motor
Check electric connections
Check line and auxiliary load fuses
Check for actuation of the motor thermal
cut-out (only for three-phase versions)
THE GENERATOR DOES NOT HEAT
No energy supply to the oil burner
Check electric connections
Check the line and auxiliary fuses
Check that the room thermostat contact is
closed
Check for actuation of the motor thermal
cut-out (only for three-phase versions)
Check for actuation of the LIMIT thermostat
THE BURNER FLAME IGNITES BUT
GOES OUT AFTER A FEW SECONDS
Electric connection not correctly m
ade
Check supply polarity
(phase + neutral + earth)
Burner to be checked or faulty
Check burner settings
Replace the electronic burner control device
Check and / or replace the flame detector
electrode
THE OIL BURNER FLAME IGNITES
BUT GOES OUT AFTER A FEW
SECONDS
Electrical connection not made
correctly
Check supply polarity
(phase + neutral + earth)
Burner to be checked or faulty
Check burner settings
Replace the electronic burner control device
Check and/or replace the Burner photocell
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ANOMALY
CAUSES
REMEDIES
THE BURNER GOES OUT
ANOMALOUSLY AND BY CHANCE
Actuation of the LIMIT thermostat
Check the aperture of the air flow direction
control vanes
Check for the absence of obstructions on the
air inlets
Check the fan motor
Flame detaches from burner
Check burner settings
Check that the generator is not in a room
subject to pressure drop
Room thermostat not correctly
installed
Check that the sensitive element of the room
thermostat is not in the flow of hot air from
the generator
LIMIT THERMOSTAT OPERATES
Obstructions in the air circuit
Check that the airflow control vanes are
open
Check for the absence of obstructions on the
air inlet grilles
Hot air
backflow
Check the aperture of the airflow control
vanes so that there is no backflow of hot air
to the inlets.
Check the temperature of the inlet air
Fan assembly to be checked or faulty
Check that the fan rotor is clean
Check the efficiency of the fan motor
Check the state and tension of the belts
(three-phase version only)
Check for anomalous action of the motor
thermal cut-out (three-phase version only)
Excess thermal power
Check the settings of the oil burner
FAN MO
TOR THERMAL CUT
-
OUT
ACTUATES (ONLY FOR THREEPHASE VERSIONS)
Excess current intake and/or heating
of the fan motor
Check that the air distribution plenum is
installed
Check the electric supply voltage
Check the inlet air temperature
THE FAN DO
ES NOT START WITHIN
APPROX A MINUTE AFTER BURNER
IGNITION
Insufficient thermal power
Check the oil burner settings
Double thermostat FAN
-
LIMIT to be
checked or faulty
Check the FAN settings
Replace the double thermostat FAN-LIMIT
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2
ANOMALY
CAUSES
REMEDIES
THE FAN DOES NOT STOP WITHIN
FOUR MINUTES OF BURNER STOP
Room temperature too high
Check the inlet air temperature
Check for any exposure to sunlight
Double thermostat FAN
-
LIMIT to be
checked or faulty
Check the FAN settings
Check the white push-button in AUTOMATIC
position
Replace the double thermostat FAN-LIMIT
THE FAN DOES NOT OPERATE
Fan unit to be checked or faulty
Check the efficiency of the fan motor
Check the efficiency of the fan motor
condenser (single phase versions only)
Check the transmission belts (three-phase
versions only)
Check for action of the fan motor thermal
cut-out (three-phase versions only)
Double thermostat FAN
-
LIMIT to be
checked or faulty
Ch
eck the FAN settings
Replace the double thermostat FAN-LIMIT
THE FAN OPERATES
INTERMITTENTLY
Double thermostat FAN
-
LIMIT to be
checked or faulty
Check the FAN settings
Replace the double thermostat FAN-LIMIT
Insufficient thermal po
wer
Check the oil burner settings
THE FAN HAS SOME IDLE
OPERATION
Hot air backflow
Check the aperture of the air flow control
vanes, so that there is no backflow of hot air
to the inlets
Check the inlet air temperature
THE GENERATOR G
ETS UNUSUALLY
DIRTY
Burner settings incorrect
Check the oil burner settings and cleaning
Chimney blocked
Clean the flue duct and the chimney
INTERNAL CONDENSATION OF
COMBUSTION PRODUCTS
Insufficient thermal power
Check the oil bur
ner settings
DIFFICULTY IN REACHING THE
TEMPERATURE SET ON THE ROOM
THERMOSTAT
Insufficient heat exchange due to
fouled heat exchanger
Clean the heat exchanger
Burner not set correctly
Check the oil burner settings
Room T
hermostat not installed
correctly
Check that the room thermostat bulb is not
in the generator hot air flow
PRODUCT DISPOSAL
This product was designed and made with high qualità material and components which can be recycled and
reused.
When finding the symbol of a wheeled crossed bin on a product, be aware of the fact that the component is
covered by the European Directive 2002/96/EC.
Get informed about your local waste separation system as far as electric and electronic products are
concerned.
Respect your in force local rules and do not dispose old products with your household waste. A correct
product disposal helps preventing possible negative consequences on human and environmental health.
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3
NOTES
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EC CONFORMITY DECLARATION
DÉCLARATION DE CONFORMITÉ À LA CE
EU-ÜBEREINSTIMMUNGSERKLÄRUNG
CONFORMITEITSVERKLARINGVOOR DE EU
DICHIARAZIONE DI CONFORMITÀ
DECLARACION DE CONFORMIDAD CON LA CE
FÖRSÄKRAN OM ÖVERENSSTÄMMELSE
EU:N VAATIMUSTENMUKAISUUSVAKUUTUS
EU OVERENSSTEMMELSESERKLÆRING
EU-SAMSVAR
DEKLARACJA ZGODNOŚCI WE
ЗAЯBЛEHИE O COOTBETCTBИИ TPEБOBAHИЯМ CTAHДAPTOB EC
EC MEGFELELŐSÉGI NYILATKOZAT
PROHLÁŠENÍ O DODRŽENÍ NAŘÍZENÍ EC
EC ATITIKTIES DEKLARACIJA
EL VASTAVUSAVALDUS
EC ATBILSTĪBAS DEKLARĀCIJA
ΔΗΛΩΣΗ ΣΥΜΜΟΡΦΩΣΗΣ ΕΚ
AT UYGUNLUK BEYANI
VYHLÁSENIE ZHODY S ODPORÚČANIAMI EURÓPSKEHO SPOLOČENSTVA
DECLARAŢIA DE CONFORMITATE CU RECOMANDĂRILE COMUNITĂŢII EUROPENE
ДЕКЛАРАЦИЯ ЗА СЪОТВЕТСТВИЕ НА ЕВРОПЕЙСКАТА ОБЩНОСТ
DEKLARACIJA USKLAĐENOSTI S PREPORUKAMA EUROPSKE UNIJE
ДЕКЛАРАЦІЯ ВІДПОВІДНОСТІ EC
DESA ITALIA s.p.a. Via Tione, 12 - 37010 - Pastrengo (VR) ITALY
Portable forced air heaters: - Appareils de chauffage individuels à air forcé: - Tragbare hochdruck-heissluftturbinen: - Mobiele
ventilator-luchtverwarmer: - Generatore d’aria calda: - Calentadores móviles de aire forzado: - Portabel värmeäkt med forcerat
luftöde: - Siirrettävä kuumailmapuhallin: - Flytbare luftcirkulations apparater: - Flyttbar varmekanon: - Przenośne nagrzewnice
powietrza pod ciśnieniem: - Тепловой генератор: - Hordozható hőlégfúvók: - Přenosná topná tělesa na dm chan vzduch: - Kilnojami
aukšto slėgio oro šildytuvai: - Kaasaskantav õhusoojendi: - Pārvietojamie gaisa sildītāji ar piespiedu gaisa padevi: - Φορητη
θερμαστρα εξαναγκασμενησ ροησ αερα: - Priprava za vpihavanje toploga zraka: - Portatıf basinçli hava isiticilar: - Prenosný tlakový
teplovzdušný ohrievač: - Încălzitoare portabile de aer: - Преносими отоплители под налягане: - Uređaj za upuh toploga zraka: -
Портативні повітрянагрівачі:
BG 50 - BG 70 - BG 90
BG 110 - BG 190 - BG 260 - BG 390
It is declared that these models conform to: - Ces modèles ont été déclarés conformes à:
Hiermit wird bescheinigt, daß diese Modelle in Übereinstimmung: - Hierbij wordt verklaard dat deze modellen:
Si dichiara che questi generatori sono conformi: - Se declara por este medio que estos modelos:
Ovanstående modeller överensstämmer: - Näiden mallien todistetaan täten noudattavan:
Det attesteres herved, at anførte modeller er i overensstemmelse: - Det erklæres at disse modellene er i samsvar:
Oświadcza się, że niniejsze modele zgodne są z zarządzeniem: - Hacтoящим мы зaявляем, чт
о эти нагрeвaтели oтвечают
требованиям стандартов на оборудование: - Kijelentjük, hogy fenti modellek megfelelnek
Prohlašujeme, že tyto modely odpovídají Nařízení pro stroje: - Vastab järgmistele el direktiividele ja standarditele:
Atbilst sekojošu es standartu un direktīvu prasībām: - Δηλώνεται ότι αυτά τα μοντέλα είναι σε συμμόρφωση με την οδηγία περί
Μηχανημάτων: - İşbu modellerin: - Potvrdzujeme, že tieto modely sú zhodné s nariadením: - Declară că modelele sunt produse
conform hotărârii: - Декларира, че горепосочените модели съответстват Директивата за: - Očituje se da su spomenuti modeli
sukladni sa uredbom: - Декларується що ці моделі відповідають:
98/37 CE, 91/368, 93/44, EMC 89/336, 92/31, 93/68, 73/23
Pastrengo, 06/04/2010
Raffaele Legnani (Managing Director)
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2
02/10_Rev.0 Cod. 745-MN
DESA ITALIA s.p.a.
Via Tione, 12 – 37010
Pastrengo (Verona) – Italy
www.desaitalia.com
info@desaitalia.com
DESA POLAND Sp. Z.o.o
ul Magazynova 5A, 62-023
Gadki, Poland
www.desapoland.pl
office@desapoland.pl
DESA HEATING EQUIPMENT
SHANGHAI CO., LTD
Rm. 2203, 218, HengFeng Rd,
Shanghai, China, 200070
www.desa-china.com
info@desa-china.com
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