Accorroni LC 16 Manual

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Heaters blowers
LC
16 / 20 / 28 / 40 / 56
TECHNICAL INFORMATIONHeaters blowers LC

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Hanging unit heaters with
horizontal and vertical projection
SERIES “LC” destined for heating
GENERAL INFORMATION for proper installation
It contains all the news related to the description of the devices and their technical characteristics.
TECHNICAL INFORMATION FOR THE INSTALLER
It collects all the technical details and recommendations that the installer must comply with to realize the project.
Important notes for the consultation:
1 For the purposes of a correct and safe use of the device, the designer, the installer, the user and the service
to their respective responsibilities, are required to comply with what is indicated in this manual.
It must be kept for future reference and must accompany the machine for its entire lifespan, including the case
of transfer to third parties.
2 WARNING! Following information that, because of their importance, must be scrupulously observed and for
which non-compliance can result in damage and / or impair the safety of use. The paragraphs highlighted in
bold contain information, warnings or important tips that you should carefully evaluate.
3 The A2B Accorroni E.G. LTD accepts no responsibility for any damage caused by improper use, to a use other
than that prescribed and by an incomplete or approximate application of the instructions contained in this
manual.
4 The technical data, styling characteristics, components and accessories listed in this manual are not binding.
 TheA2BAccorroniE.G.LTDreservestherighttointroduceatanytimewhatevermodicationsdeemed
necessary to the improvement of its product.
5 References to laws, regulations and technical rules mentioned in this manual are for information only and to
be considered valid at the date of printing, as indicated on the last page. The entry into force of new provisions
or amendments to current laws do not constitute grounds for any obligation of the A2B Accorroni
E.G. LTD against third parties.
6 The A2B Accorroni E.G. LTD is responsible for the conformity of his product to laws, directives and construction
standards in force at the time of commercialization. The knowledge and observance of the laws and standards
regarding plant design, installation, operation and maintenance are the exclusive responsibility for their respective
powers, the designer, installer and user.

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INDEX
1.0 MAIN FEATURES ....................................................................................................................... 5
 1.1 Classicationofttings............................................................................................................... 5
 1.2 Certications-CE....................................................................................................................... 5
1.3 Design features ........................................................................................................................... 5
1.4 Contents of the packaging .......................................................................................................... 5
1.5 Accessories supplied on request ................................................................................................ 5
1.6 Application ................................................................................................................................... 5
1.7 Safety Standards.......................................................................................................................... 6
2 0 GENERAL SAFETY ..................................................................................................................... 6
 2.1 InstallerQualication.................................................................................................................... 6
2.2 Power supply ............................................................................................................................... 6
2.3 Use .............................................................................................................................................. 6
2.4 Use of instructions ........................................................................................................................ 6
3 0 HANDLING AND TRANSPORTATION......................................................................................... 7
3.1 Dimensions ................................................................................................................................... 7
4 0 INSTALLATION ........................................................................................................................... 7
4.1 General information - positioning ................................................................................................ 7
4.2 Water connections ....................................................................................................................... 7
4.3 Electrical connections .................................................................................................................. 8
5 0 RULES FOR INSTALLATION ....................................................................................................... 8
5.1 Positioning .................................................................................................................................... 8
 5.2 horizontalowheaters..................................................................................................................8
 5.3 heatersverticalow...................................................................................................................... 9
6 0 WATER CONNECTION ............................................................................................................... 10
7.0 ELECTRICAL CONNECTIONS .................................................................................................... 10
8.0 TTECHNICAL DATA TABLES ..................................................................................................... 11
 9.0 WIRING ........................................................................................................................................ 14
10.0 STARTING .................................................................................................................................... 18
10.1 Checks ........................................................................................................................................ 18
10.2 Goodwill ....................................................................................................................................... 18
10.3 User information .......................................................................................................................... 18
11.0 FAULTS OF OPERATION ............................................................................................................ 18
11.1 Preliminary checks ...................................................................................................................... 18
11.2 Possible defects ........................................................................................................................... 18
11.3 Fans do not work ......................................................................................................................... 18
11.4 Loss of water in the battery .......................................................................................................... 18
11.5 The fan also stops when operating ............................................................................................. 18
 11.6 Noiseorvibrationduringoperation............................................................................................. 19
12.0 REPLACING COMPONENTS ..................................................................................................... 19
 12.1 Replacementofthefans.............................................................................................................. 19
13.0 MAINTENANCE........................................................................................................................... 19
 13.1 Engines........................................................................................................................................ 19
 13.2 Batteries....................................................................................................................................... 19
 13.3 Fans............................................................................................................................................. 19
 13.4 Routinemaintenance.................................................................................................................. 19
 13.5 Annualinspection......................................................................................................................... 19

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1.0 MAIN FEATURES
This manual collects the installation standards, proper
use and maintenance of the HEATERS series LC.
Youwillnotndadetaileddescriptionofthevarious
components of organs, nor the detailed account of
how they work, but all that will serve to familiarize
yourself with your equipment and will help to obtain
maximum performance and get the maximum service
life.
GENERAL WARNINGS
This manual is an integral part of the product;
it should not be separated from it, and must
be carefully stored for future use or reference.
Failure to comply with the recommendations
in this manual implies the loss of the warranty
conditions. If the appliance is sold or transferred
to another owner to ensure that the manual
accompanies the appliance.
This appliance must be used only for the purpose
for which it was built.
All applications specically indicated in this
manual are considered improper and therefore
dangerous.
1.1 CLASSIFICATION OF APPLIANCES
The horizontal unit heaters LC, with wall, are fed to
water and are particularly suitable for the heating of
industrial buildings, craft, stores, laboratories, etc.
1.2 CERTIFICATION - EC MARKING
TheafxingoftheCEmarkingensuresconformityof
the appliances with the Machinery Directive
98/37/EEC,theLowVoltageDirective73/23/EEC,
theElectromagneticCompatibilityDirective89/336/
EEC and successive amendments.
These products are then subjected to the CE marking
have been tested to the harmonized regulations
applicable to them, and they are accompanied by a
statement to the Annex.
1.3 CONSTRUCTION
LC consists essentially of a group of heat exchange
betweenthecirculatinguidinsidetheheatexchanger
(hotorchilledwater)andtheairowexertedbyafan
unit.
The ambient air is drawn in from / by the fan / s and
thrust through the heat exchanger, which transfers in
winter or in summer subtracts the heat to the same.
The treated air is discharged into the room through
thegrilltohorizontalnsmadeofextrudedaluminum,
adjustable manually.
The cover piece is made of painted sheet steel,
polyester powder, in the long life guarantee.
In the rear are located, according to the model, one
or two convection fans axial type with safety grille.
The fan motors are single-phase with external rotor,
designed for different operating speeds, using special
auto-transformer.
The heat exchanger is made from copper pipes and
aluminumnsxedbymechanicalexpansionofthe
tubes.
The connections to the electrical panel, housed in a
special sealed housing and can be found on the right
side of the unit.
Both types of connection, hydraulic and electric,
are also accessible laterally, after removal of the
respective shaped panels.
1.4 PACKAGE CONTENTS
The unit is shipped in standard recyclable cardboard
packaging with internal, which also contains:
- This manual
-Thewarrantycerticate
The manual and the warranty certicate must be
delivered to the owner of the device to keep them
carefully for future use or reference.
WARNING! It is important to check that the
packaging is intact upon delivery of the material.
1.5 ACCESSORIES PROVIDED UPON REQUEST
On request can be supplied with the following
accessories:
- Remote control with room thermostat, summer
switches / winter and fan speed;
- Consent thermostat (40 ° C);
- xingbars;
1.6 FIELD OF USE
The devices are designed and manufactured for
heating the air in the craft, commercial premises,
industrial and must be used solely for this purpose,
in relation to their technical and performance
specications.
The quality and the size of the materials used were
chosen to ensure a reasonable length of life, and are
suitable for operation of the apparatus, both together
that in their components, subject to an installation
realized in a workmanlike manner and in conditions
of mechanical, chemical and thermal corresponding
to normal use.
WARNING! All applications specically indicated
in this manual are considered improper and are
not permitted; in particular it is not provided for
the use of equipment in industrial processes and
/ or the installation in a corrosive or explosive
atmosphere; It is not allowed their feed with
superheated water or steam.
It assumes no liability of the producer for

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damage to persons, animals or things caused by
nonobservance of this manual, by modications
or tampering with the product, to errors in
installation, adjustment, maintenance and
improper use.
Failure to comply with the recommendations
in this manual also result in forfeiture of the
warranty conditions.
1.7 SAFETY REGULATIONS
WARNING! The installation and maintenance
must be performed by skilled personnel and duly
authorized.
The connection to the power supply must be
performed in accordance with current national plant
regulations.
During installation and maintenance operations,
always operate in conditions of maximum safety,
please follow the instructions in this manual and the
possible warning labels on the product.
Observe the installation and function limits indicated
in this manual, do not change in any way the internal
electrical wiring and internal pipes, does not alter or
disable safety and controlling devices.
Donotleavecontainersandammablesubstances
near the appliance.
Before each check, maintenance, or anything else
involving access to internal parts, disconnect the
main power supply.
2.0 GENERAL SAFETY
2.1 QUALIFICATION OF INSTALLER
The installation and maintenance must be performed
by skilled personnel and duly authorized.
2.2 POWER SUPPLY
The LC unit heater must be properly connected to an
efcientearthsystem.
The connection to the power supply must be
performed in accordance with current national plant
regulations.
2.3 USE
The use of the device should not be allowed to
children, untrained people and unassisted disabled
persons.
You must observe the following guidelines:
- do not touch the appliance with wet or damp body
and / or barefooted;
- do not insert utensils, paper or anything else that
might penetrate through the fan screens;
- do not open the access panels to internal parts.
These operations are reserved for the specialized
personnel;
- do not to proceed to clean the outer parts of the
 appliancewithoutrstremovingthepowersupply
at the main switch;
- do not leave the appliance exposed to the
elements;
- do not place objects on the unit;
- do not touch the moving parts in the heater.
LC can be moved with a forklift truck or pallet truck,
taking care to balance the weight at the supports.
For safety reasons, given the relatively high weight,
not groped to lift the machine by hand.
WARNING! One person can lift a maximum weight
of 30 kg.
Avoid suspension by slings or ropes, because there
arenospecicanchoragepoints.However,respect
the instructions on the carton with the appropriate
symbols.
Upon delivery, check that during transport there has
been no visible damage on the package and / or
on the device. In the event of a nding of damage
display immediately claim with the shipping.
Do not install damaged equipment in transport.
It is’ not dispose of parts of the packaging in the
environment or leave them within reach of children
as they are potentially dangerous.
2.4 USE OF THE INSTRUCTIONS
This manual is an integral part of the product and
must be delivered to the owner of the device so that
it accurately preserve for future use or reference.
WARNING! When installing or working on the
appliance observe all instructions in this manual
and so applicable to the product in accordance
with national safety standards. Changes of
connections of any kind and / or failure to comply
with these instructions will immediately invalidate
the warranty and the manufacturer responsibility.
3. HANDLING AND TRANSPORTATION
The unit is shipped with properly attached coated
cardboard box.
The device can be operated by personnel properly
equipped with adequate equipment to the product’s
weight, such as a forklift or pallet truck, but distribute
the weight on the supports.
Upon delivery, check that during transport there has
been no visible damage on the package and / or on
the unit. In case of nding of damage immediately
expose formal complaint to the shipping company.
Do not install damaged equipment in transport.
Do not dispose parts of the packaging in the

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Model L H P B Ø Weight Kg.
16 555 485 300 230 G 1” 30
20 630 560 300 230 G 1” 34
28 780 710 300 230 G 1” 38
40 630 1010 300 230 G 1” 63
56 780 1310 300 230 G 1” 75
environment or leave them within reach of children
as they are potentially dangerous.
The possible storage of the unit, must take place in
a suitable place, away from atmospheric agents and
from excessive moisture, for the shortest possible
time.
DIMENSIONS
4.0 INSTALLATION
4.1 GENERAL INFORMATION - POSITIONING
Before carrying out any installation work, ensure that
the following conditions are met:
a) it is possible to arrive in the desired place with the
 single-phasepowersupplyline230Volts~50
Hz and that the expected position of plumbing
connections matches that of the attacks on the
unit.
b) that the location is suitable for proper air circulation
 intheenvironmentandtheairowisnotimpeded
 byanyobstacles,otherwise,thattheairowitself
does not disturb the people present. In the case in
which in the same room are installed several
devices, it is convenient to distribute the air
 accordingofoppositeowdirections;
c) that the installation location allows accessibility to
the appliance parts subject in maintenance.
The optimal installation height is between 2.4
and 3.5 m and is understood as the vertical
distance between the decking and the base
station; higher or lower heights than indicated
should be carefully evaluated so as to ensure the
correct air distribution within the room.
4.2 WATER CONNECTIONS
WARNING! Make sure the bearing capacity of the
wall on which it will be xed the support bracket,
depending on the weight of the device and to
install the fasteners.
WARNING! Verify the characteristics of the water
circulation device with the load losses of the
batteries of the related equipment
In case you are used metal pipes, it is recommended
to follow the following requirements:
- install air vent valves at the highest points of the
pipes;
- to install on-off valves on pressure lines and
return water to facilitate the maintenance
operations avoiding to download the whole
system;
- suitably insulate the pipes to prevent heat loss
and condensation.
WARNING! Before lling the pipes, make sure
they do not contain material outsider like sand,
debris, rust and anything can damage the unit
exchanger or reduce the yield.
L P
B
H
Ø
Heater blowers LC

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With this provision it is aimed to obtain a circular air
owintheenvironmentandtoneutralizethelossof
heat at the origin .
For modest size environments are advisable
provisions such as those of Fig . 3 and Fig . 4 .
5.3 HEATERS VERTICAL FLOW
In the arrangement of the devices you will have to do
sothattheindividualzonesofinuenceareuniformly
distributedovertheentiresurfaceinplantg.5.
Positioning air blowers
Fig. 1
Positioning air blowers
Fig. 2
Positioning air blowers
Fig. 3
4.3 ELECTRICAL CONNECTIONS
WARMING! Make the electrical connections with
power off and only after completing the plumbing
connections and have veried the proper
maintenance.
Make sure that the power supply is type 230 V
- single phase - 50 Hz. Install in the vicinity of the
appliance an all-pole switch with adequate capacity
(with a opening of contacts of at least 3 mm) for the
main device Possible Shutdown .
It is banned the use of gas and / or water pipes for
the xing of the unit on the ground.A2BAccorroni
is not responsible of any damage caused by lack of
grounding of the device and failure to comply with
the wiring.
INSERT the power cable through the appropriate
cable gland, making sure to cut the wires so that the
earth yellow / green cable is longest.
This precaution, in case of accidental detachment,
enables the earth cable to exit for last from the
connections.
The power cable will have to be appropriate for the
type of facility and will have a size suitable to seal on
thegland(recommendedH05VVF3x1.5mm2).
Connect the power cord to the phase terminals(L),
neutral (N) and the ground terminal block located in
the framework).
5. RULES FOR INSTALLATION
5.1 POSITIONING
The arrangement of the heaters in the environment
to be heated has a signicant inuence on the
success of the system .
5.2 HEATERS HORIZONTAL FLOW
For large environments the recommended provisions
are those given in Fig . 1 and Fig . 2.
Positioning air blowers
Fig. 4

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Wanting to increase vertical launch it can be done in
sothattheinterferinginuencezonesbetweenthem
thus obtaining a decrease of the braking action
Airjetlandsonitsactivationandag.6.
The heaters of the LC series can be provided with
support brackets , which facilitate the positioning in
place Fig . 7 .
The LC unit heaters are suspended vertically
projected with the appropriate eye bolts and chains
kitg.8. Fig. 5
Positioning air blowers
Positioning air blowers
Fig. 6
Type of installation
Fig. 7
Type of installation
Fig. 8

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6.0 WATER CONNECTION
The sizing of the water supply must be done according
to the instructions of the designer. The heaters are
provided with threaded connections listed in the tables
of dimensions on page . 6 .
It is advisable not to connect the unit heaters with pipe
diameters of less than those of their attacks .
- Provide the outgoing tube an automatic air
discharge valve .
- It is recommended to mount attacks on a shut
off valve of the same diameter in order to allow the
disassembly of the unit heater without draining the
system .
-Makethehydraulicconnectionsasshowning.9.
7.0 ELECTRICAL CONNECTIONS
WARNING! Make the electrical connections
with power off and only after completing the
plumbing connections and have verified the proper
maintenance .
Make sure that the available electrical power is the
type 230 V - single phase - 50 Hz .
Mount close to the appliance an all-pole switch with
adequate capacity (with a contact gap of at least 3
mm) for any general standstill.
The use of gas and / or water pipes for the appliance
to be earthed is not allowed. The manufacturer is
not liable for any damage caused by failure to earth
the appliance and failure to comply with the wiring
diagrams .
Insert the power cable through the cable clamp ,
taking care to cut the conductors so that the earth
yellow / green cable is longer than the other two. This
precaution , in case of accidental detachment, enables
the earth cable to exit for last from the connections.
The power cord must be suitable for the type of
system implemented and will have a size suitable to
seal the cable gland ( we recommend the type H05
VVF 3x1.5 mm2) .
Connect the power cord to the phase terminals ( L),
neutral ( N ) and the earth terminal block under .
The Fig. 10 , 11 , 12 , and 13 give an indication of the
connection unit heaters , according to all the possible
configurations achievable :
- Basic wiring diagram fig . 10
- Basic wiring diagram with temperature thermostat
fig. 11
- Wiring diagram with room thermostat
fig. 12 and 13.
Water connections
Fig. 9
Flow
Vent air
Flow

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8.0 TECHNICAL TABLES
Table 1 - Heating LC 16
Yield heating T 5 °C
20 15 10 5
45°C 7,95 9,85 11,82 13,86
50°C 9,80 11,76 13,73 15,77
55°C 11,71 13,61 15,64 17,68
Yield heating ∆T 10 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 12,44 14,42 16,45 18,55
65°C 14,35 16,33 18,36 20,46
70°C 16,2 18,24 20,34 22,44
80°C 20,01 22,06 24,15 26,32
Yield heating ∆T 15 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 11,33 13,3 15,27 17,39
65°C 13,24 15,21 17,25 19,36
70°C 15,15 17,19 19,23 21,34
80°C 18,97 21,01 23,11 25,29
Yield heating ∆T 20 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 10,18 12,18 14,11 16,2
65°C 12,12 14,09 16,13 18,21
70°C 14,10 16,14 18,09 20,17
80°C
17,9 19,93 21,97 24,16
Heating flow (kW) air temp. variable d.b. (°C)
2080
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
Air Temp. entry °C
Description
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
Water in entry
2080
Heating flow (kW) air temp. variable d.b. (°C)
Air flow m³/h
2080
Water in entry
2080
Table 1 - Heating LC 20
Yield heating ∆T 5 °C
20 15 10 5
45°C 10,41 12,89 15,47 18,14
50°C 12,83 15,39 17,97 20,64
55°C 15,33 17,82 20,47 23,14
Yield heating ∆T 10 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 16,28 18,87 21,52 24,27
65°C 18,78 21,37 24,02 26,77
70°C 21,20 23,87 26,62 29,36
80°C 26,16 32,50 31,60 34,44
Yield heating ∆T 15 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 29,65 34,80 39,96 45,50
65°C 34,65 39,80 45,14 50,66
70°C 39,65 44,98 50,32 55,84
80°C 49,64 54,98 60,47 66,17
Yield heating ∆T 20 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 26,64 31,87 36,92 42,39
65°C 31,72 36,87 42,21 47,65
70°C 36,90 42,24 47,34 52,78
80°C
46,84 52,15 57,49 68,82
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
2150
Water in entry
Description
Heating flow (kW) air temp. variable d.b. (°C)
Air Temp. entry °C
Air flow m³/h
2150
2150
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
2150
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
Table 1 - Heating LC 20
Yield heating ∆T 5 °C
20 15 10 5
45°C 10,41 12,89 15,47 18,14
50°C 12,83 15,39 17,97 20,64
55°C 15,33 17,82 20,47 23,14
Yield heating ∆T 10 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 16,28 18,87 21,52 24,27
65°C 18,78 21,37 24,02 26,77
70°C 21,20 23,87 26,62 29,36
80°C 26,16 32,50 31,60 34,44
Yield heating ∆T 15 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 29,65 34,80 39,96 45,50
65°C 34,65 39,80 45,14 50,66
70°C 39,65 44,98 50,32 55,84
80°C 49,64 54,98 60,47 66,17
Yield heating ∆T 20 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 26,64 31,87 36,92 42,39
65°C 31,72 36,87 42,21 47,65
70°C 36,90 42,24 47,34 52,78
80°C
46,84 52,15 57,49 68,82
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
2150
Water in entry
Description
Heating flow (kW) air temp. variable d.b. (°C)
Air Temp. entry °C
Air flow m³/h
2150
2150
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
2150
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
Technical data air blowers LC
Description
Thermo power
Flow air
Fan
Number of min. turns
Sound pressure
Water connections
Feeding
Absorption
Net weight

12
Table 1 - Heating LC LC 28
Yield heating ∆T 5 °C
20 15 10 5
45°C 13,79 17,09 20,50 24,04
50°C 17,00 20,40 23,82 27,36
55°C 20,32 23,62 27,14 30,68
Yield heating ∆T 10 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 21,58 25,01 28,53 32,17
65°C 24,89 28,32 31,84 35,48
70°C 28,10 31,64 35,28 38,92
80°C 34,68 43,08 41,89 45,65
Yield heating ∆T 15 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 29,65 34,80 39,96 45,50
65°C 34,65 39,80 45,14 50,66
70°C 39,65 44,98 50,32 55,84
80°C 49,64 54,98 60,47 66,17
Yield heating ∆T 20 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 26,64 31,87 36,92 42,39
65°C 31,72 36,87 42,21 47,65
70°C 36,90 42,24 47,34 52,78
80°C
46,84 52,15 57,49 68,82
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
2250
Water in entry
Description
Heating flow (kW) air temp. variable d.b. (°C)
Air Temp. entry °C
Air flow m³/h
2250
2250
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
2250
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
Table 1 - Heating LC 40
Yield heating ∆T 5 °C
20 15 10 5
45°C 20,81 25,78 30,94 36,28
50°C 25,66 30,79 35,94 41,28
55°C 30,66 35,63 40,95 46,29
Yield heating ∆T 10 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 32,56 37,74 43,05 48,54
65°C 37,56 42,74 48,05 53,54
70°C 42,40 47,74 53,23 58,73
80°C 52,32 65,01 63,20 68,88
Yield heating ∆T 15 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 29,65 34,80 39,96 45,50
65°C 34,65 39,80 45,14 50,66
70°C 39,65 44,98 50,32 55,84
80°C 49,64 54,98 60,47 66,17
Yield heating ∆T 20 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 26,64 31,87 36,92 42,39
65°C 31,72 36,87 42,21 47,65
70°C 36,90 42,24 47,34 52,78
80°C
46,84 52,15 57,49 68,82
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
4300
Water in entry
Description
Heating flow (kW) air temp. variable d.b. (°C)
Air Temp. entry °C
Air flow m³/h
4300
Heating flow (kW) air temp. variable d.b. (°C)
4300
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
4300
Water in entry

13
Table 1 - Heating LC 56
Yield heating ∆T 5 °C
20 15 10 5
45°C 27,59 34,18 41,01 48,09
50°C 34,01 40,81 47,64 54,72
55°C 40,64 47,23 54,27 61,35
Yield heating ∆T 10 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 43,15 50,02 57,06 64,34
65°C 49,78 56,64 63,69 70,97
70°C 56,20 63,28 70,56 77,84
80°C 69,35 86,16 83,77 91,30
Yield heating ∆T 15 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 39,30 46,13 52,96 60,31
65°C 45,93 52,76 59,83 67,15
70°C 52,55 59,63 66,70 74,01
80°C 65,80 72,88 80,15 87,71
Yield heating ∆T 20 °C
Description
Air Temp. entry °C 20 15 10 5
Air flow m³/h
60°C 35,31 42,24 48,93 56,18
65°C 42,04 48,87 55,94 63,16
70°C 48,91 55,98 62,75 69,95
80°C
62,09 69,13 76,20 91,22
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
5100
Water in entry
Description
Heating flow (kW) air temp. variable d.b. (°C)
Air Temp. entry °C
Air flow m³/h
5100
5100
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)
5100
Water in entry
Heating flow (kW) air temp. variable d.b. (°C)

14
9.0 WIRING
Fig. 10
Fig. 11
WIRING LC 16 / 20 / 28 BASE
WIRING LC 16 / 20 / 28 WITH CONSENT THERMOSTAT
Connections to be made.............
Connections to be made.............
LEGEND
M = Clamp
C = Condensator
b = Blue
m = Brown
n = Black
gv = Yellow- green
Mv = Motor fan
LEGEND
M = Clamp
Tr = Consent thermostat
C = Condensator
b = Blue
m = Brown
n = Black
gv = Yellow- green
Mv = Motor fan

15
Fig. 12
Fig. 13
WIRING LC 16 / 20 / 28 WITH AMBIANCE THERMOSTAT winter mode
WIRING LC 16 / 20 / 28 WITH AMBIANCE THERMOSTAT,
SUMMER MODE (VENTILATION ONLY)
Connections to be made.............
Connections to be made.............
LEGEND
M = Clamp
Tr = Consent thermostat
C = Condensator
b = Blue
m = Brown
n = Black
gv = Yellow- green
Mv = Motor fan
To take off the bridge
between 0 and 4
To take off the bridge
between 0 and 4

16
Fig. 11
Fig. 10
WIRING LC 40 / 56 BASE
WIRING LC 40 / 56 WITH CONSENT THERMOSTAT
MV1 MV2
MV1 MV2
LEGEND
M = Clamp
C = Condensator
b = Blue
m = Brown
n = Black
gv = Yellow- green
Mv1 = Motor fan 1
Mv2 = Motor fan 2
LEGEND
M = Clamp
Tr = Consent thermostat
C = Condensator
b = Blue
m = Brown
n = Black
gv = Yellow- green
Mv1 = Motor fan 1
Mv2 = Motor fan 2
Connections to be made.............
Connections to be made.............

17
WIRING LC 40 / 56 WITH AMBIANCE
THERMOSTAT,
SUMMER MODE (VENTILATION ONLY)
WIRING LC 40 / 56 WITH AMBIANCE
THERMOSTAT winter mode
MV1 MV2
MV1 MV2
To take off the
bridge between
0 and 4
To take off the
bridge between
0 and 4
LEGEND
M = Clamp
Tr = Consent thermostat
C = Condensator
b = Blue
m = Brown
n = Black
gv = Yellow- green
Mv1 = Motor fan 1
Mv2 = Motor fan 2
Connections to be made.............
Connections to be made.............

18
10.0 STARTING
10.1 INSPECTIONS
Before starting operation, make sure that the rules
and regulations on the installation of these devices,
especially with respect to the correct sizing of the
water supply pipes have been complied with.
Before proceeding with the commissioning of the
device must ensure that:
- security conditions and all the instructions contained
in this manual have been complied with;
- securing the support bracket to the wall is stable and
clear zones are free from any obstacle or materials,
which hinder the easy accessibility of the apparatus;
- plumbing and electrical connections, with particular
attention to the ground, they have been properly
executed;
- the devices for loading, unloading and vent the
system are in the correct operating conditions and
have been adequately controlled;
- was made a thorough bleed air from inside of water
pipes and the heat exchanger unit
10.2 CHECKS
Dare tensione tramite l’interruttore omnipolare di
cui al precedente punto 3.3. Se l’apparecchio è
comandato da un termostato ambiente, posizionare
il dispositivo di regolazione dello stesso sul valore di
temperatura che si desidera raggiungere in ambiente
e, se il termostato è completo di commutatore delle
tre velocità di ventilazione, controllarne il corretto
funzionamento.
10.3 INFORMAZIONI ALL’UTENTE
Powering through the pole switch referred to in
paragraph 3.3. If the unit is controlled by a room
thermostat, set the adjustment device of the same
on the temperature value you want to achieve in the
environment and, if the thermostat is complete switch
of the three-speed fan, check its correct functioning.
11.0 FAULTS OF OPERATION
11.1 PRELIMINARY CHECKS
Before performing specific tests, make sure:
A) power supply is properly connected and any
external regulation bodies such as the room
thermostat or timer, are operating properly;
B) the shut-off valves, mounted on the water pipes,
are in the open position.
11.2 POSSIBLE DEFECTS
Here are the possible faults with the list of possible
causes. In italics are briefly indicated repair or restore
operations, which are the responsibility of skilled
technical personnel.
11.3 FANS DO NOT WORK
A) The control systems and external control of the
equipment are dead (thermostats, on / off and the
like);
- Verify correct operation.
B) The connection of power cables fan is damaged
or broken;
- Restore the wiring correctly. Verify that the
motor is not burned and in case replace it.
11.4 LOSS OF WATER FROM THE BATTERY
A) Water connections are not made correctly;
- Restore the hydraulic connections ensuring
the tightness of suitable materials.
B) The exchanger has corrosion and / or lost estate;
- Replace the heat exchanger with a new one,
still looking for any external cause of the
problem (presence of corrosive atmosphere or
aggressive substances in the environment)
11.5 FAN STOPS EVEN IN THE SITUATION
OF OPERATING REQUESTA)
The motor thermal protection activated
- Verify, through the use of an ammeter, that
the absorptions of the motor does not move
too much from the rated values, identify the
cause of overheating and possibly replace the
fan.
11.6 NOISE OR VIBRATIONS DURING
OPERATION
A) The fan is noisy and / or vibrating
- Check the correct rotation of the fan blades
and the presence of possible frictions. Remove
any dust deposits. Check the tightening of the
screws that secure the motor to the grid and
the grid itself appliance.
12.0 REPLACEMENT PARTS
For the replacement of components is required
specific technical skills, so it is recommended
to alert the user to always contact an authorized
Technical Service Centre.
For safety and quality reasons, it is recommended
to be used for replacement original spare parts.

19
WARNING! All these operations must be performed
with the off device, excluding power supply.
12.1 REPLACING FAN
Disconnect electrical connection of the fan from the
terminal board located in the electrical panel of the
unit heater. Unscrew the four screws holding the fan
grille to the rear panel of the unit heater. Remove the
unit and release the fan from the grid by removing the
four screws. Clean the grill from deposits of dust and
staring at the new fan, taking care to use the original
screws, since the thread depth greater than 5 mm
could damage the engine.
Reinsert the fan - grid in the seat and fasten with
screws interposing full of spacer grommets.
Restore the electrical connection taking care to
respect the original connection to the circuit diagram.
WARNING! To find additional information about
components, please contact:
A2B Accorroni E.G. LTD - Phone [phone]
13.0 MAINTENANCE
13.1 MOTORS
The engines are fitted with permanently lubricated
bearings. Therefore they do not need special
maintenance.
13.2 BATTERIES
Once a year, before the season of use, clean the fins
of the batteries with compressed air.
13.3 FANS
Clean the fans from any dust deposits. No other
maintenance is required.
WARNING! The operations described below must
be performed with the off device, excluding power
supply.
13.4 ROUTINE MAINTENANCE
It is recommended to perform the beginning of each
operating season the following steps:
A) Simply clean the outside with a damp cloth;
B) Clean with the help of a brush or of a jet of
compressed air the dust deposits from the battery
fins and from the grid of the fan inlet;C) verificare
che il foro di scarico condensa sia libero da
qualsiasi elemento intasante, che possa
impedire il corretto deflusso della condensa;
13.5 ANNUAL INSPECTION
In order to minimize the possibility of failures and
maintain the perfect efficiency of the heater, it is
advisable to perform at least once a year a general
check.

20
A2B Accorroni E.G. S.r.l. - 60027 OSIMO (AN) – Via dʼAncona, 37
Tel. [phone] r.a. – Fax [phone] – e-mail [e-mail]
Part. IVA e C.F. 02345650424
DECLARATION OF CONFORMITY '
Supplier: A2B Accorroni E.G. Ltd.
Address: 60027 Osimo (AN) - Via D'Ancona, 37
Tel [phone] - Fax [phone]
Equipment: air heater LC
With reference to the equipment in question in the wall unit heaters versions in horizontal projection for the heating of
buildings by means of liquid water type, A2B Accorroni E.G. Ltd.
DECLARES
that the product
- It complies with the safety provisions of electric appliances for household or similar use - General requirements EN 60335-1
(2002) (+ A1 + A1 / Ec + A2 + A11 + A12 + A13);
- It complies with the safety of electrical appliances for household or similar use - Part 2: Particular requirements for heat
pumps, air conditioners, dehumidifiers EN 60335-2-40 (2005-06) (+ A1);
- It complies with the methods of measurement of radio disturbance characteristics of electrical equipment, and similar power
or thermal, tools and electrical appliances EN 55014-1 (2006);
- Complies with the measurement methods for electromagnetic fields of electrical appliances for household and similar with
regard to human exposure EN 62233 (2008-04) (+ A1);
- Complies with the electromagnetic compatibility requirements (EMC) Part 3: Limits - Section 2: Limits for harmonic current
emissions (equipment input current <16 A EN 61000-3-2 (2006) (+ A1 + A2) ;
- It complies with the electromagnetic compatibility requirements (EMC) Part 3: Limits - Section 3: Limitation of voltage
fluctuations and flicker in low-voltage supply systems for equipment with rated current <16 A EN 61000-3-3 (1995 ) (+ A1);
- Complies with the immunity requirements for household appliances, tools and similar electrical appliances.
and correspond to the directive on construction products and meet the requirements of the following directive:
- ATEX 94/9 / EC 2006/42 / EC 2006/95 / EC 2004/108 / EC 93/68 / EEC 92/31 EEC
Osimo, September 2010
A2B Accorroni E.G. Ltd.
The Legal Representative
Altamura Lorenza