Master BF35-BF78-BF105 Manuale del proprietario

Tipo
Manuale del proprietario
P.1
INSTALLATION AND OPERATION
SERIES BF
INSTALLATION AND OPERATION
Dear Customer,
Thank you for choosing a HOT AIR GENERATOR from the BF, series, an innovative,
modern, high-quality and high-performance product that will provide you comfort, maximum
silence and safety for a long time, especially if the appliance is entrusted to a DANTHERM
Technical Assistance Service that is specifically prepared and trained to maintain it at the highest
level of efficiency with lower operating costs and, if necessary, provide original spare parts.
This User Manual includes important instructions and recommendations that should be
complied with, in order to easily install and to better use the HOT AIR GENERATOR from the
BF series
Thank you.
Dantherm S.p.A.
GENERAL
INFORMATION
COMPLIANCE
The hot air generator mod. BF complies with:
Machinery directive 2006/42/EC
Low Voltage Directive 2006/95/EC
Electromagnetic Compatibility Directive 2004/108/EC
Regulation 2016/2281
Directive 2009/125/CE
GENERAL
INFORMATION
RANGE
This manual includes references to the TYPE. The following table shows the series and the
correspondence between the TYPE and the TRADE NAME
TYPE
TRADE NAME
1
BF 35
2
BF 75
3
BF 105
GENERAL
INFORMATION
WARRANTY
The BF air generator is covered by a SPECIFIC WARRANTY, which starts from the purchase
date, which should be proved by the Customer through the relevant documents; if the customer is
unable to present the relevant documents, the warranty starts from the machine manufacturing
date. The warranty conditions are specified in the WARRANTY CERTIFICATE, provided together
with the machine. We suggest reading it carefully.
GENERAL
INFORMATION
INDEX
General information:
Compliance
2
Range
2
Warranty
2
Index
3
Description of equipment
4
Basic safety rules
5
Notes on
disposal
5
Description
6
Design specifications
6
Identification
7
Product receipt
7
Fixed guards
7
Structure
8
Heat exchanger diagram
9
Dimensions and weights
10
Technical data
11
Regulation table 2016/2281
12
Handling
13
Information for installation and adjustment:
Location
14
Clearance area
14
Examples of installation
15
Air supply and return
15
Plenum for direct air diffusion
16
Accessories
16
Principle of operation
16
Secondary channelling
17
Fuel connection
17
Fume exhaust
18
Combustion air
19
Assembly of diesel burner
19
Burner control
20
Wiring
20
Electrical power supply
21
Wiring diagram reference
21
Control panel
22
Fuel tank
22
Commands
23
Ventilation / Heating
23
Start and stop
24
Controls
25
Condensate absence control
25
Indications
26
Electric motor consumption
26
Instructions for maintenance and technical assistance:
Maintenance
26
Diesel burner cleaning
27
Electric fan cleaning
27
Safety thermostat control
27
Safety check
27
Electrical connection check
27
Jacket cleaning
27
Fume analysis
27
Internal heat exchanger cleaning
28
Technical Support
28
In the manual, the following symbols are used:
WARNING = operations requiring appropriate care and preparation
FORBIDDEN = operations that MUST NOT be performed, in any case
GENERAL
INFORMATION
GENERAL REMARKS
This manual is an integral part of the machine, therefore it should always be carefully kept and it should always be
provided together with the machine, if it is transferred to another owner or user. If this manual is damaged or lost, a new
one should be requested from the local Technical Assistance Service or from the Manufacturer.
After unpacking the product, check the integrity and completeness of the contents. If not, contact the Agency that sold
the unit.
The installation of the appliance must be carried out by an authorized company which, at the end of the work, issues to
the owner the Declaration of Conformity of Installation made in accordance with the rules, therefore in accordance with
the Standards and the instructions provided by the Manufacturer in this instruction manual.
This appliance has been manufactured for room heating and it must be used for this purpose, compatibly with its
performance characteristics.
Any contractual or extra-contract liability of the Producer in respect of damages caused to people, animal or things by a
non correct installation, setting or maintenance or by the improper use of the machine is excluded.
If the temperature is too high, it could be harmful to health and would be a useless waste of energy. Do not leave the
rooms closed for a long time. Periodically open the windows to ensure proper ventilation.
During the initial start-up, there may be the formation of odours and fumes due to the evaporation of the liquid added to
protect the heat exchanger during storage; this is normal and it will disappear after a short period. It is recommended to
suitably ventilate the room.
If you will not be using the unit for long periods, carry out the following operations:
turn the main switch of the unit and the general switch of the plant to "OFF"
close the main fuel supply valve
In case of long periods during which the equipment is not operated, it is recommended to contact either After-Sales
Technical Assistance Service or anyhow professionally qualified personnel for its new start-up.
The machine shall be fitted only with original accessory equipment. The Producer is not liable for damages arising from
the improper use of the machine or from the use of non-original materials or accessories.
References to Laws, Regulations, Directives and Technical Rules mentioned in this manual are provided only for
information purposes and as they are in force when the manual is printed. The entry into force of new provisions or
amendments to current laws does not represent an obligation of the manufacturer towards third parties.
Repairs or maintenance must be performed by the Technical Assistance Service or by qualified personnel in accordance
with this manual. Do not modify or tamper with the appliance as dangerous situations can be created and the
manufacturer will not be liable for any damage caused.
The systems that are to be created (gas pipes, power supply, etc.) must be suitably secured and must not be dangerous
with the risk of tripping.
The Producer is responsible for the product compliance with Laws, Directives or Construction Rules in force when the
product is marketed. The knowledge and observance of the laws and standards regarding plant design, installation,
operation and maintenance are the sole responsibility of the designer, installer and user.
The Producer shall not be held responsible for failure to comply with the instructions of this manual, for the
consequences of any operations carried out and not specifically provided for or for translations open to misinterpretation.
The electrical system must feature suitable individual and independent electrical protections for each appliance which, in
case of accidental failure, will be activated on the single appliance without prejudice to the proper operation of the other
units present on the installation.
The appliance is designed to be operated with the heating capacity and the air flow rate specified in the Data
Sheet chapter. If the heating capacity is too low and/or the air flow rate is too high, combustion products may
condensate, resulting in the irreparable corrosion of the heat exchanger. If the heating capacity is too high
and/or the air flow rate is too low, an anomalous overheating of the heat exchanger may occur, resulting in the
activation of the safety devices and causing damage to the exchanger
GENERAL
INFORMATION
MAIN SAFETY RULES
Bear in mind that if you use products powered trough electric power, gas, etc., you should comply with some basic rules,
such as:
Children and unassisted disabled people must not use the hot air generator.
Do not operate electrical devices such as switches, electrical appliances, etc. if you can smell fuel. In this case:
air the room by opening doors and windows;
close the fuel control device;
promptly request the intervention of the Technical Assistance Service or of skilled personnel
Do not touch the unit barefoot or when parts of the body are wet or damp.
Do not clean or perform maintenance before disconnecting the unit from the electrical power supply by turning the main
switch of the system to "OFF", and shutting-off the fuel.
Do not modify the safety or adjustment systems without authorization and the instructions of the manufacturer of the unit.
Do not pull, disconnect and twist the electrical cables coming from the unit, even if it is disconnected from the electrical
power supply.
Do not open the access doors to the inside of the unit, without turning the main switch of the unit to "OFF".
Do not dispose of, abandon or leave within the reach of children, the packaging materials (cardboard, staples, plastic
bags, etc.), as they may be potentially dangerous.
Do not install the unit near flammable material, or in rooms with an aggressive atmosphere.
No object should be placed over the machine nor inserted through its case grill or through the combustion product
exhaust ducts.
The exhaust duct should not be touched, since during normal operations it might reach high temperatures, being
therefore dangerous to be touched.
Do not use adaptors, power strips and extension cables for the electrical connection of the unit.
Do not install the unit beyond the limits of use and operation shown in the instruction manual.
The warm air heater shall not be directly installed in small areas lacking proper ventilation, since the air intake might
cause a remarkable depression within the room, causing serious problems.
It is prohibited to install the device outdoors and directly exposed to weathering.
GENERAL
INFORMATION
DISPOSAL INSTRUCTIONS
Disposing of the appliance must be performed by an authorised company and in compliance with
the applicable laws. Before taking waste to Authorised Collection Centres, dismantle and separate
the various materials that compose it which in summary are:
ferrous materials
aluminium and copper
electrical wiring
Seals and insulating materials
plastic materials
electronic cards
GENERAL
INFORMATION
DESCRIPTION
The hot air generator is essentially a heat exchange unit between products of the combustion of a
single-stage blown-air burner and a flow of air produced by a high-performance fan unit.
The air to be heated is drawn in by the latter and by touching the hot surfaces of the heat
exchanger it is heated increasing in temperature; it can then be distributed either directly or
through suitable channels.
Thanks to its features, the centrifugal fan can be installed in plants requiring the distribution of the
heated through channels or, in general, where static pressure is needed.
Through this heating system, the plant costs can be remarkably reduced and a reliable operating
economy can be reached; therefore, it is particularly fit for those cases where it will be used
occasionally and discontinuously.
In summer, it is also possible to use only the fan unit.
GENERAL
INFORMATION
DESIGN SPECIFICATIONS
Heat Exchanger:
It is made of welded stainless steel, it can be easily inspected for ordinarily cleaning and
maintenance operations and it comprises the following elements:
STAINLESS STEEL AISI 430 stainless steel combustion chamber with low thermal load,
cylindrical and with volume.
Steel exchange elements with a large surface, with a decreasing section and with opposing
turbulencing prints.
Steel flue gas manifold , equipped with an inspection door.
External casing:
The casing consists of panels in pre-painted and/or powder-coated sheet metal and also includes:
Anti-radiant thermal insulation of the surfaces exposed to the heater irradiation.
Plenum for direct air diffusion with delivery nozzle on the four sides and adjustable horizontal
fins that can be closed to exclude one side if necessary.
Pre-cut hole to connect another secondary hot air distribution circuit.
Cover to protect the burner and the tank (where present), with large inspection door.
Fan assembly:
It consists of a centrifugal fan with a low level of sound emission and high performance.
Safety and control thermostat:
The appliances are equipped with thermostats with sensitive elements positioned on the air
delivery (pre-calibrated and electrically connected at the factory), with the following functions:
"FAN" function (FAN thermostat calibration +35°C), it activates the fans max. 60 seconds
after the burner has started and it stops them approx. 4 minutes after it has stopped. Thus, it
prevents unpleasantly cold air from being released in the room when the machine is activated
and the thermal energy accumulated by the heat exchanger can be exhausted, by completely
using it before the machine stops.
"LIMIT" function (LM Thermostat - sealed calibration: +100 °C): it stops the burner if the air is
abnormally overheated. It shall be manually restarted.
Smoke discharge inlet:
The machine is fitted with a round inlet where a metal pipe should be safely inserted and fixed, in
order to discharge the combustion products. The flue to be used must be in accordance with
and certified standard .
Diesel tank:
Types 1 and 2 feature a diesel tank, complete with filler neck, filter and connections to connect it to
the burner.
Diesel burner:
The appliance is equipped with a self-aspirating diesel burner, complete with an electronic
command and control module for fully automatic operation.
GENERAL
INFORMATION
IDENTIFICATION
The warm air heaters can be identified through:
The Technical Plate, applied on the machine, specifying the main technical-performance data.
In the event of damage or loss, request a duplicate from the Technical Assistance Service
GENERAL
INFORMATION
RECEIVING THE PRODUCT
The appliance is supplied with:
Document envelope including:
o User guide
o Wiring diagram
o Any warranty certificate
o Barcode tags
o Burner Owner's Manual (if supplied)
GENERAL
INFORMATION
FIXED PROTECTIONS
In order to avoid the accidental contact with the movable parts of the machine, check if the
following fixed protections have been properly installed:
Appliance infill panels;
Burner compartment access door
GENERAL
INFORMATION
STRUCTURE
The drawing shows type 2:
1. Fan assembly
2. Tank (where present)
3. Diesel filter (where present)
4. Filler neck (where present)
5. Diesel burner
6. Electrical panel
7. Fan
8. Fan support
9. Diaphragm
10. Deflector
11. Deflector
12. Deflector
13. Panel
14. Side panel
15. Beam
16. Flue washer
17. Panel
18. Panel
19. Panel
20. Panel
21. Door
22. Side panel
23. Beam
24. Control panel
GENERAL
INFORMATION
HEAT EXCHANGER DIAGRAM
Image axonometric heat exchanger:
Operating diagram with main dimensions:
Combustion products:
perform an inversion in the combustion chamber;
are routed to the first exhaust manifold (front manifold) and are channelled in the exchange
elements (smoke pipes);
arrive in the second exhaust manifold (rear collector) and then they are discharged trough the
circular connector.
TYPE
1
2
A
L
(mm)
(mm)
(mm)
(mm)
1
320
115
60
500
2
400
115
60
600
3
600
160
85
900
GENERAL
INFORMATION
DIMENSIONS AND WEIGHT
TYPE
A
B
C
D
NET
WEIGHT
1
(mm)
(mm)
(mm)
(mm)
(mm)
(kg)
1
1,020
500
1,600
1,240
120
140
2
1,120
540
1,700
1,320
150
180
3
1,400
760
2,000
1,580
180
315
1. Without burner
GENERAL
INFORMATION
TECHNICAL SPECIFICATIONS
TYPE
1
2
3
Thermal capacity
1
kW
29.1
60.1
97.7
kcal/h
25,050
51,680
84,020
Combustion yield
1
%
92.5
92.5
93.0
Net smoke temperature
2
°C
160
160
150
Heat capacity
1
kW
26.9
55.5
90.8
kcal/h
23,130
47,730
78,090
Combustion chamber pressure
mbar
0.2
0.3
0.5
Mass of combustion products
kg/h
45
100
160
Instantaneous diesel consumption
3
kg/h
2.4
5.0
8.4
Nominal airflow rate
m³/h
2,800
5,300
8,800
Nominal air thermal gradient
°K
29
32
31
FAN thermostat calibration
°C
35
35
35
LIMIT thermostat calibration
°C
100
100
100
Sound pressure emission
4
dB(A)
57
60
70
Range of use
°C
-5/+40
-5/+40
-5/+40
Electrical power supply
V50 Hz
230
230
400 3N
Fan motor input power
W
245
560
2,200
Max electric power to the fan engine
A
2.8
5.9
4.6
Capacitor
microF
8
16
-
Electric protection degree
IP
20
20
20
Diesel tank capacity
litres
75
90
-
1) Referred to a lower heating power (Hi)
2) Referred to combustion air temperature +15°C
3) Fuel oil: Hi = 10,200 Kcal/kg
4) Measured in free field 3 metres away from the appliance, on the burner side.
GENERAL
INFORMATION
REGULATION TABLE 2016/2281
TYPE
1
2
3
Configuration:
B
23
B
23
B
23
Fuel type:
Liquid
Liquid
Liquid
Capacity:
P
rated,h
kW
26.9
55.5
90.8
P
min
kW
-
-
-
Useful efficiency:
nom
%
86.8
86.8
87.3
pl
%
-
-
-
Electrical energy consumption:
el
max
kW
0.150
0.190
0.190
el
min
kW
-
-
-
el
sb
kW
0.002
0.002
0.002
Other elements:
F
env
%
0
0
0
P
ign
kW
-
-
-
s,flow
%
90.6
89.7
89.9
s,h
%
72.3
72.1
72.9
Legend:
P
rated,h
Nominal heating capacity
P
rated,h
Minimum heating capacity
nom
Nominal heating capacity useful efficiency
pl
Minimum capacity useful efficiency
el
max
At nominal heating capacity
el
max
At minimum heating capacity
el
sb
In "stand-by" mode
F
env
Envelope loss factor
P
ign
Ignition burner consumption
NOx Nitrogen oxide emissions
s,flow
Emission efficiency
s,h
Ambient heating seasonal energy efficiency
Note:
The data reported in the table refer to the calorific power lower than the fuel (GCV)
Page13
GENERAL
INFORMATION
HANDLING
Handling must be performed by properly equipped personnel. If a fork-lift is used, pitchfork the
machine in the lower part using the appropriate ways in the wood bedplate.
Shipping and handling must be carried out with extreme care to avoid damage to the unit and
danger to the persons involved.
During transportation and handling, it is forbidden to stand near the unit.
Use forklift forks with a minimum length equal to the width of the machine.
If belts or ropes are used, a rocker arm must be used (not included) to prevent the pressure
exerted by the same from damaging the structure of the unit.
Should it be necessary to place more than one unit on top of each other, observe the index
indicated on the packaging itself and be very careful when aligning the packages so as not to
create unstable stacks.
If the device needs to be moved by hand, make sure that there is enough workforce available in
proportion with the weigh indicated in the section "DIMENSIONS AND WEIGHT" and depending
on the distance to cover.
We recommend the use of personal protective equipment (PPE).
INSTALLATION
INFORMATION
INSTALLATION PLACE
The location for the unit must be determined by the system designer or a competent person and it
must take into account the technical requirements and the standards and regulations in force;
generally, special permissions need to be obtained. (e.g.: regulations concerning zoning,
architecture, fires, environmental pollution, noise emission, etc.).
It is therefore advisable, before installing the unit, to request and obtain the necessary permissions.
To properly install the machine, bear in mind that the heaters should:
be placed on a flat surface, capable of bearing its weight;
be supported over the entire perimeter of the lower base;
be placed on a surface whose deflection and strength is such that it can prevent vibrations from
reaching the area underneath;
respect the distances in order to allow for a correct flow of air and normal cleaning and
maintenance operations;
maintain the safety distances from flammable material;
be placed close to a flue chimney;
be able to be connected to the fuel source
be close to an electrical socket;
allow for easy maintenance and inspections;
be fitted with the ventilation openings required by the relevant regulations.
It is forbidden to install it:
in places where there are aggressive atmospheres;
in cramped places where the sound level of the hot air generator can be increased by
reflections or echoes;
in corners where leaves could accumulate or where other objects could clog the air passage
and reduce the generator efficiency;
in pressurised places;
in depressurised places;
outdoors, if not provided with a protection against bad weather conditions.
INSTALLATION
INFORMATION
SAFETY AREA
The unit must be easily and safely accessible without the need for special equipment
(ladders, mobile platforms, etc.). Around the unit it is also necessary to respect the minimum
distances to allow normal control and/or maintenance operations and not to create obstacles to the
flow of air.
Page.14
INSTALLATION
INFORMATION
EXAMPLES OF INSTALLATION
Here is a series of examples of installation:
At the centre of the room with delivery on 4 sides
On the perimeter wall with delivery on 3 sides
In the corner with delivery on 2 sides
Any restrictions deriving from specific Laws and regulations must also be observed (for example
regarding fires). Refer to the designer of the system.
Air can not be delivered from only one side
INSTALLATION
INFORMATION
AIR SUPPLY AND RETURN
Intake direction and treated air outlet:
Page15
INSTALLATION
INFORMATION
PLENUM FOR DIRECT AIR DIFFUSION
The appliance is not ductable and it is equipped with a delivery plenum fitted with fins that can be
individually adjusted manually.
The fins must be adjusted in such a way that:
they allow for adequate air distribution;
they do not create excessive resistance;
they do not bother people;
To get an optimal air diffusion, we recommend installing the appliance close to a perimeter wall or
in the middle of the room itself, with the air outlet on three or four sides respectively.
In order to avoid dangerous overheating of the appliance, the fins on at least two sides must be
open.
The upper surface of the plenum can not be stepped on.
Air can not be spread from only one side of the plenum.
GENERAL
INFORMATION
ACCESSORIES
Any accessories must be original. To install them, follow the instructions included in the relevant
package.
GENERAL
INFORMATION
PRINCIPLE OF OPERATION
The operating principle is described below:
When the room thermostat detects a temperature lower than the value set, it activates the
burner at a fixed thermal power previously set.
Approx. 1 minute after the flame has been ignited, also the ventilation unit starts, thus releasing
warm air in the room.
When the room thermostat detects that also the second pre-set temperature level has been
reached, it authorises the turn-off of the burner. After approx. 3-4 min. - when the heat
exchanger has completely cooled- the ventilation unit goes off too
Page.16
GENERAL
INFORMATION
SECONDARY CHANNELLING
It is possible to send, via secondary ducting, part of the volume of treated air to other rooms (e.g.
an office) through the pre-cut hole.
TYPE
1
2
3
pre-cut hole
mm
150
150
300
1. Pre-cut hole
2. Circular fitting with stop (not supplied)
3. Secondary channelling (not supplied)
INSTALLATION
INFORMATION
FUEL CONNECTION
The machine should be connected to the fuel network by qualified and skilled personnel and the
manual instructions and the relevant regulations should be carefully complied with.
Page.17
INSTALLATION
INFORMATION
SMOKE DISCHARGE
Fume exhaust connection position and example of connection to the flue:
1. Condensate discharge fitting, necessary to prevent any condensate that has formed
in the flue to flow inside the heat exchanger.
The exhaust pipe and the flue connector should be made in compliance with the Regulations
and Laws in force. They should be made up of metal and stiff ducts, capable of resisting to
mechanical, thermal and chemical stress caused by the combustion.
It is mandatory that all components of the flue be certified
To avoid reflux of condensation from the flue to the hot air generator, there must be a
condensation discharge at the lowest point of the smoke duct.
The weight of the entire smoke duct must not rest on the appliance.
The flue must ensure the minimum depression required by the current technical standards,
considering "zero" pressure to the connection with the fume duct.
Non insulated exhaust pipes might be a source of dangers.
Unsuitable or wrongly sized flues or flue gas pipes might amplify the burning noise and affect
negatively the combustion parameters.
Joint seals should be made of materials resistant to the thermal and chemical stress caused by
the combustion products.
If walls and/or covers have to be crossed, this operation should be perfectly carried out,
preventing seepage or fire risks.
The use of pipes made of plastic material is forbidden
IF INSTALLATION IS PROVIDED IN THE AREA OF FREE ACCESS TO PERSONS AND / OR
ANIMALS, THE FLUE PIPE UP TO APROX. 2 METERS ABOVE, MUST BE REALIZED IN
DOUBLE WALL VERSION AND/OR EQUIPPED WITH ANTI-SCALD PERFORATED
NETWORK.
Page.18
Moreover, we suggest:
avoiding or having just few horizontal ducts, which should anyway be upward raked;
using metal pipes featuring a smooth internal surface and being capable of resisting to the
thermal and chemical stress caused by the combustion products, with the same diameter as the
connector of the machine or with a bigger diameter;
avoid narrow bends and section reductions;
having a trap to take and analyse the combustion products;
properly anchoring the flue gas discharge pipe;
having a proper end cover to prevent rainwater seepage into the machine and significant friction
losses.
The smoke pipe connecting the machine to the flue should be easily dismantled; this is a basic
condition to enable the personnel to easily control and clean inside the heat exchanger
INSTALLATION
INFORMATION
COMBUSTION AIR
The appliance must be installed in accordance with the regulations in force and be used only in
a sufficiently ventilated area.
Check that the combustion air inlet is always free from any obstacles (leaves, sheets of paper,
nylon pieces, etc.)
Proper air openings should be made, in compliance with the relevant Standards
INSTALLATION
INFORMATION
DIESEL BURNER ASSEMBLY
The burners are supplied, on request, disassembled and in separate packages.
The installer is in charge of mounting, electrically connecting and setting the burner. These
operations should be carried out only by qualified and skilled personnel, carefully complying with
the burner and supply ramp manuals (provided together with the devices).
It is mandatory to install only burners with certificates .
The data for the RIELLO brand burners are indicative as they can be subject to change without
notice. We recommend always consulting the latest version of the burner documents.
The availability of new burner models is in continuous evolution. For specific needs, consult the
Manufacturer.
Page.19
INSTALLATION
INFORMATION
BURNER REGULATION
Combination table for pre-calibrated RIELLO burners:
TYPE
1
2
3
RIELLO burner
Mod.
REG 3
R40G10
R40G10
Nozzle Delavan 60°W
GPH
0.60
1.25
2.00
Pump pressure
bar
13.0
11.0
13.0
Burner Head Position
Notch no.
1.0
2.0
5.0
Air damper position
Notch no.
5.0
4.0
5.0
Measured CO
2
%
12.5
12.5
12.5
Measured CO
ppm
5
5
5
Net smoke temperature
°K
160
160
150
The above data and any pre-calibration at the factory are non-binding. It is always
mandatory to check and adjust the burner at start-up and in the actual conditions of use.
INSTALLATION
INFORMATION
ELECTRICAL CONNECTIONS
The machine is provided as standard with the electric panel installed and with the engine, control
and safety thermostats of the FAN-LIMIT device connected. Therefore, the fitter just has to perform
the following operations:
connection to the general power supply;
connections to the blown burner;
connections to the various external safety systems (fire dampers, humidifier, fire protection,
etc.).
Electrical connections must only be carried out by qualified and competent personnel. In case of
doubt, do not intervene on the appliance and consult the manufacturer.
Install upstream of the unit a differential magneto thermal circuit breaker suitably sized
according to the regulations in force.
Always connect the earthing system, taking care to leave the earth wire slightly longer that the
other wires, so that, in case of accidental pulling, the latter is the last one to be removed.
Get qualified personnel to check that the section of the cables and the electrical system are
suitable for the maximum power absorbed by the unit indicated on the information plate.
Respect polarity in the connection of the power supply (phase - neutral). In any case, make sure
that the direction of rotation of the fans is correct.
The unit must be connected to an efficient earthing system. The manufacturer shall not be held
responsible for any damage caused by failure to earth the appliance.
The electrical cables must be positioned so as not to come into contact with hot and/or cold
surfaces, or with sharp edges.
In accordance with the Standards regarding the installation of electrical components, a device
that ensures disconnection from the mains with an opening distance between contacts that
guarantees complete disconnection in overvoltage conditions III (Standard EN 60335-1) must
be included.
It is forbidden to use water pipes or gas pipes to earth the unit.
For the input and output of the electrical wires, use the dedicated cable clamps on the unit
The appliance must always be electrically powered. Operation consent must only be
obtained by closing and opening the contact of the room thermostat.
Page.20
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Master BF35-BF78-BF105 Manuale del proprietario

Tipo
Manuale del proprietario

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