VelAir V5 User manual

EN Installation manual
Nautical fancoils
V5 - V12 - V20

2
Markings
Conformity
This unit complies with the European directives:
• EN 60335-2-40 Safety of household and similar electrical ap-
pliances - Part 2: Particular rules for electric heat pumps, air
conditioners and dehumidiers
• Low Voltage Directive 2014/35 / EU
• EMC Directive 2014/30 / EU relating to electromagnetic com-
patibility
• RoHS2 Directive 2011/65 / EU2 relating to the restriction of
the use of hazardous substances in electrical and electronic
equipment
• Directive 2012/96 / EC (WEEE) relating to waste electrical and
electronic equipment
• Directive 2010/30 / EU on energy labeling
• ErP Directive 2009/125 / EC and Regulation 2012/206 / EC
• Directive 2014/68 / EU PED relating to pressure equipment
And subsequentamendments..
First of all, we would like to thank you for deciding to give your preference to a unit of our production.
As you can see, you have made a winning choice because you have purchased a product that represents
the state of the art in marine air conditioning technology.
By following the suggestions contained in this manual, the product that you have purchased will operate
without problems giving you optimum room temperatures with minimum energy costs.
UFLEX S.r.l.

3
INDEX
1 General � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � p.4
1.1 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.4
1.2 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.4
1.3 Target audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.5
1.4 General warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.5
1.5 Basic rules of security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.5
1.6 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.6
1.7 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.6
1.8 Description of equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.6
1.9 Rated technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.7
1.10 Overall dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.7
2 Installation� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � p.9
2.1 Preliminary warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.9
2.2 Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.9
2.3 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.9
2.4 Place of installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p.9
2.5 Installation minimum distances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.10
2.6 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.10
2.7 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.12
2.8 Plant loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.13
2.9 Electric connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.14
2.10 Diagrams and configurations electrical controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.15
3 Wall mounted remote control � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � p.18
3.1 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.18
3.2 Electric connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.19
3.3 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.20
3.4 Main functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.23
3.5 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.24
4 Maintenance � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � p.26
4.1 Routine maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.25
4.2 Six-monthly operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.25
4.3 Suggestions for energy saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .p.26

4
GENERAL
 
GENERAL
1�1 Symbols
The pictograms in the next chapter provide the necessary
information for correct, safe use of the machine in a rapid,
unmistakable way.
Editorial pictograms
User
• Marks the pages containing instructions or information in-
tended for the User..
Installer
• Marks the pages containing instructions or information in-
tended for the installer.
Service
• Marks the pages containing instructions or information in-
tended for the Technical Assistance Center.
Safety pictograms
Warning
• Indicates that the operation described presents, if not carried
out in compliance with safety regulations, the risk of suering
physical damage.
Dangerous electrical voltage
• It signals to the personnel concerned that the described ope-
ration presents, if not carried out in compliance with the sa-
fety regulations, the risk of suering an electric shock.
Danger of strong heat
• Informs the personnel concerned that the operation descri-
bed presents, if not carried out in compliance with safety
regulations, the risk of being burned by contact with high
temperature components.
Prohibition
• Refers to prohibited actions.
1�2 General information
This manual has been conceived with the aim of providing all
the explanations for the correct management of the appliance.
Read this manual carefully before using the product and keep
the instructions so that they are always available in case of need.
The manual is divided into sections:
General
It is aimed at all recipients.
Contains general information and important warnings that must
be known before installing and using the appliance.
Installation
It is aimed exclusively at the installer.
It contains all the information necessary for positioning, moun-
ting and connecting the appliance.
Commissioning and Maintenance
They only and exclusively turn to the Technical
Assistance Center.
It contains useful information for commissioning and the most
common maintenance interventions.
Technical information
It is aimed at all recipients.
It contains the detailed technical information of the appliance.

5
GENERAL
1�3 Recipients
User
Non-expert person able to operate the product in safe condi-
tions for people, for the product itself and for the environment,
to interpret an elementary diagnostic of faults and anomalous
operating conditions, to carry out simple adjustment, verica-
tion and maintenance.
Installer
Person skilled and qualied to position and connect hydrauli-
cally, electrically, etc. the unit to the plant: is responsible for han-
dling and correct installation as indicated in this manual and in
current national legislation. If the units have refrigeration con-
nections, the F-gas license is required..
Service
Expert person, qualied and authorized directly by the factory to
carry out all ordinary and extraordinary maintenance operations,
as well as any adjustment, control, repair and replacement of
parts that may become necessary during the life of the unit itself.
1�4 General warnings
This instruction manual forms an integral part of the device
and therefore must be carefully preserved and must ALWAYS
travel with it, even if you transfer the device to another owner
or relocate it to other premises.
If the manual gets damaged or lost, download a copy from
the website.
Read this manual carefully before proceeding with any ope-
ration and scrupulously follow what is described in the indi-
vidual chapters.
All the personnel in charge must be aware of the operations
and the dangers that may arise when starting all the installa-
tion operations of the unit.
Installations performed outside the warnings provided in this
manual and use of the appliance outside the prescribed tem-
perature limits will void the warranty.
These appliances have been designed for air conditioning /
heating and must be destined for this use compatibly with
their performance characteristics.
Any contractual and extra-contractual liability for dama-
ge caused to people, animals or things, due to installation,
adjustment and maintenance errors or improper use is exclu-
ded. All uses not expressly indicated in this manual are not
permitted.
Only qualied installer companies are authorised to install
the device. After having completed installation, the installer
will issue a declaration of conformity to the plant manager,
as required by the applicable standards and the guidelines
provided by contractor's instruction manual supplied with
the device.
Initial start-up and repair or maintenance operations must be
carried out by the Technical Assistance Center or by qualied
personnel according to the provisions of this booklet.
Do not modify or tamper with the appliance as this may cre-
ate dangerous situations.
It is always necessary to wear protective gloves and goggles
to perform interventions on the refrigerant side of the ap-
pliances..
During installation and/or maintenance operations, use su-
itable accident-prevention clothing and tools. The manu-
facturer declines all responsibility for failure to comply with
current safety and accident preventionand accident preven-
tion regulations in force.
Avoid contact: danger of burns.
To prevent any risk of electric shock, disconnect the main
switch before making electrical connections and any main-
tenance work on the equipment
In the event of liquid or oil spillage, set the system's main
switch to "o" and stop the ow in the reference circuit. In
the reference circuit. Call the authorised Technical Assistance
Centre or professionally qualied personnel as soon as possi-
ble and not intervene personally on the appliance.
If the appliance is not used for a long period of time, the fol-
lowing operations must be carried out:
• set the main system switch to "O"
• close the water taps
• if there is a danger of frost, ensure that the system has been
lled with antifreeze liquid, otherwise drain the system
In case of replacement of parts, use only original parts.
The manufacturer is not responsible for damages to persons
or property caused by failure to follow the instructions in this
manual.
The manufacturer reserves the right to make changes to its
models at any time in order to improve its products, without
prejudice to the essential characteristics described in this ma-
nual. The company is not obliged to add these modications
to machines previously manufactured, already delivered or
under construction.
This document is restricted in use to the terms of the law and
may not be copied or transferred to third parties without the
express authorization of the manufacturer.
1�5 Basic rules of security
Please keep in mind that the use of products powered by
electricity and water call for operators to comply with certain
essential safety rules:
It is forbidden to children and unassisted disabled persons to
use the device. The unit can be used by children over the age
of 8, and by people with reduced physical, sensoryor mental

6
GENERAL
capabilities, or with no experience or necessary knowledge,
as long as they are monitored or after they have received in-
structions on the safe use of the unit and have understood
the dangers involved. Children must not play with the ap-
pliance. The cleaning and maintenance that must be perfor-
med by the user should not be carried out by children wi-
thout supervision.
It is forbidden to touch the device with wet or damp body
parts.
It is forbidden to clean the device before having discon-
nected it from the mains by setting the main switch of the
system to "o".
It is forbidden to modify the safety or adjustment devices or
adjust without authorization and indications of the manu-
facturer.
It is forbidden to pull, unplug or twist the device's electric
cables, even if it is disconnected from the mains.
It is forbidden to introduce objects and substances through
the air inlet and outlet grilles
It is forbidden to open the access doors of the device's inter-
nal parts without rst having set main switch of the system
to" o".
It is forbidden to dispose of, or leave in the reach of children,
the packaging materials which could become a source of
danger.
1�6 Disposal
The symbol on the product or on the packaging indicates that
the product must not be considered as normal household wa-
ste, but must be taken to the appropriate collection point for the
recycling of electrical and electronic equipment.
Correct disposal of this product prevents damage to humans
and the environment and favors the reuse of precious raw ma-
terials.
For more detailed information on recycling this product, contact
the municipal oce, the local waste disposal service or the shop
where the product was purchased.
Illegal disposal of the product by the user involves the applica-
tion of administrative sanctions provided for by current legisla-
tion.
This provision is only valid in EU Member States.
1�7 Identication
The appliance can be identied by means of the technical plate
located on the upper part of the machine.
Technical plate
It shows the technical and performance data of the appliance.
Tampering, removal and lack of identication plates does not
allow the safe identication of the product through its serial
number.
1�8 Description of the appliance
The nautical fancoils are designed for installation with ducting.
The devices are made in 3 sizes of dierent performances and
dimensions for ducting for several environments.

7
GENERAL
1�9 Rated technical specications
Models u.m. V5 V12 V20
Coil water content L 0.24 0.4 0.9
Maximum operating pressure bar 10 10 10
Maximum water inlet temperature °C 80 80 80
Minimum water inlet temperature °C 4 4 4
Hydraulic connections “ Eurokonus 3/4 Eurokonus 3/4 Eurokonus 3/4
Power supply V/ph/Hz 230/1/50 230/1/50 230/1/50
Maximum absorbed current A 0.6 1.4 2.8
Maximum absorbed power W 90 170 340
Weight kg 5.5 9 13.5
Maximum duct length * mt 7 6,5 6,5
Maximum permissible air leakage Pa 200 250 250
Nominal capacity Btu/h 5000 12000 20000
Maximum air ow m³/h 250 500 1100
Air pipe diameter mm 100 120 120
Number of fans 1 1 2
Number of condensate drains 4 4 2
Condensate drain pipes diameter mm 16 16 14
Pipeline diameter mm 18 18 18
* Calculation carried out with 120 mm diameter pipe (V12, V20)
and 100 mm diameter pipe (V5), 2 90° bends with radius 180
mm (V12, V20) and radius 150 mm (V5) at nominal air ow of the
machine. 1�10 Overall dimensions
5 - 12
A
B
C
Nautical fancoils
Models u.m. V5 V12
Dimensions
A mm 390 538
B mm 265 300
C mm 275 325

8
GENERAL
20
A
B
C
Nautical fancoils
Models u.m. V20
Dimensions
A mm 697
B mm 295
C mm 318

9
INSTALLATION
 
INSTALLATION
2�1 Preliminary warnings
Installation must be carried out by the installer.
If the installation is not carried out correctly, there is a risk of
water leakage, electric shock or re.
During installation, it is necessary to observe the precautions
mentioned in this manual, and on the labels attached to the
inside of the equipment, as well as to take all precautions
suggested by common sense and the Safety Regulations in
force at the place of installation.
Be sure to use the supplied or specied installation parts. Use
of other parts may cause the unit to come to lose, water lea-
kage, electrical shock, or re.
Failure to comply with these instructions may lead to equip-
ment malfunctions and releases the company from any form
of guarantee and from any damage caused to persons, ani-
mals or property.
2�2 Receiving
Preliminary warnings
Upon receipt of the packaging, check that the packaging is
not damaged, otherwise collect the goods with reserve, pro-
ducing photographic evidence of any damage.
The packaging must be transported in an upright position,
otherwise notify the carrier immediately.
IIn case of damage, notify the shipper of any damage within
3 days of receipt by registered letter with return receipt, pre-
senting photographic documentation, similar information,
send it by fax or by e-mail to the manufacturer as well (the
Genoa court will be competent for any dispute).
No information on damage can be taken into account after 3
days after delivery.
Package description
The packaging is made of suitable material and carried out by
experienced personnel.
The device is delivered in standard packaging consisting of
a cardboard box and a set of polystyrene foam protectors.
A pallet is provided underneath the unit's packaging to facilitate
transport and moving operations.
The units are delivered complete and in perfect condition.
2�3 Storage
Preliminary warnings
Storage must be carried out in accordance with the national
regulations in force.
Do not turn the packaging upside down.
Do not overlap the devices.
Only place the appliance in a vertical position.
Device with packaging
Store the package:
• in a dry and clean place
• in a closed environment protected from the weather
• insulated from the ground by sleepers or pallets
Device without packaging
In case of medium to long term storage, the following procedu-
res are recommended:
• check that no water is present in the hydraulic systems
• do not remove the heat exchanger protection
• do not remove plastic protective lms
• check that the electrical panels are closed
2�4 Place of installation
The location of the equipment must be determined by the sy-
stem designer or a competent person and must take into ac-
count both purely technical requirements and any applicable
national/local legislation.

10
INSTALLATION
2�5 Minimum installation distances
Leave sucient distance between the intake grille and any
obstacles to ensure proper air ow.
Ensure that there is sucient space to allow the panels to be
removed for routine and extraordinary maintenance.
2�6 Installation
Unit installation
Use the handle provided to lift the appliance.
To install the unit:
– x the appliance to the base
– loosen the fan lock
– turn the fan to the desired position
– x the fan blocke
A Floor bracket
B Screws
C Fan lock
D Fan
A
C
A
D
D
BB

11
INSTALLATION
Ventilation pipe connection
Vertical installation
A Suction lter
Horizontal installation
A Cable tie
B Flexible air hose
C Insulation
NO CURVE CHOKED
FLEXIBLE NOTUBATION
WITHOUT INSULATION
NO PLENUM WITHOUT
ADAPTER
NO AIR GRILL SMALL
AIR OUTLET
NO ADAPTER PVC WITHOUT
CLAMP
A
AVOID SOURCES OF HEAT
NEAR THE PIPES
NO DEFORMATIONS OR
CHOKES
AIR OUTLET
A
B
C
AVOID SOURCES OF HEAT
NEAR THE PIPES
NO ADAPTER PVC WITHOUT
CLAMP
NO AIR GRILL SMALL
NO OTHER AIR INPUTS
NO PLENUM WITHOUT
ADAPTER
NO CURVE PVC WITHOUT
CABLE TIE
NO SHARP-EDGED CURVE
FLEXIBLE NO TUBATION
WITHOUT INSULATION
NO DEFORMATION OR CHOKES

12
INSTALLATION
2�7 Hydraulic connections
Preliminary warnings
The choice and sizing of the hydraulic lines is the responsibi-
lity of the designer, who must work according to the rules of
good practice and current regulations.
The hydraulic pipes connecting the appliance must be sui-
tably sized for the actual water ow rate required by the sy-
stem in operation.
Location and dimensions
OUT
IN
Connection to the system
Preliminary warnings
Hydraulic lines and joints must be thermally insulated.
Avoid partial insulation of pipes.
Do not over-tighten connections to avoid damaging the in-
sulation.
Carefully check the tightness of the insulation to prevent the
formation and fall of condensation.
Connection
To make connections:
• positioning the hydraulic lines
• use the "key against key" method
• tighten connections
• check for leaks
• cover connections with insulating material
The hydraulic connections must be completed by installing:
• air release valves at the highest points of the pipes
• exible elastic joints
• shut-o valves
• drain cock
• loading tap
• an appropriately sized technical water storage tank
• a domestic hot water storage tank chosen in such a way
that the combined exchanger has sucient surface area to
exchange the full power of the heat pump under all condi-
tions.
• a mains water lter at the appliance inlet
Hydraulic accessories
The unit is supplied as standard without any shut-o valves.
Condensate drain
The appliance is complete with a tray for collecting the conden-
sate that occurs during cooling operation and which must be
conveyed to a suitable place for drainage.
To connect:
• insert a drainage pipe
• direct it to a suitable place for unloading
• maintain a minimum slope of 3%.
Ensure that all joints are sealed to prevent water leakage.

13
INSTALLATION
Verication
When installation is complete:
– pour water very slowly into the condensation tray
– check for proper outow
2�8 Plant loading
Once the hydraulic connections have been completed, the sy-
stem must be lled.
Preliminary warnings
A loading system external to the unit is required.
All operations must be carried out with the machine statio-
nary and disconnected from the power supply.
If an external auxiliary pump is used, it must be switched o..
The operating pressure of the system must not exceed 1.5
bar with the pump switched o. To check for leaks in the sy-
stem during testing, it is advisable to raise the test pressure
and then discharge it later to reach the correct operating
pressure. If the pressure exceeds 3 bar, the safety valve opens
and discharges the excess water to the outside.
Loading
Before starting the upload:
• set the main system switch to OFF
• check that the system drain cock is closed
• open all system and terminal vent valves
• open all shut-o devices on the system
To load the system:
• start lling by slowly opening the system water lling tap on
the outside of the appliance
When water starts coming out of the terminal vent valves:
• close vent valves
• continue loading up to the pressure value required by the
system
• check that the expected nominal pressure has been reached
• close the loading tap
• check the hydraulic tightness of the joints
It is recommended to repeat the operation after the applian-
ce has operated for a few hours.
Check the system pressure periodically.
Keep the system vented during operation, otherwise loss of
performance and energy consumption.
Air flow

14
INSTALLATION
2�9 Electrical connections
The unit leaves the factory with the electrical panel discon-
nected but wired and ready for connection.
Preliminary warnings
All electrical work must be carried out by qualied person-
nel who are legally qualied, trained and informed about the
risks involved.
Make sure that the power supply is switched o before car-
rying out any work.
The unit should only be powered on once the plumbing and
electrical work has been completed.
References:
• for electrical connections, refer to the wiring diagrams in this
manual, especially the part concerning the power supply ter-
minal block
• for the supply voltage, refer to the nameplate on the applian-
ce.
Check that:
• the characteristics of the mains supply are adequate for the
absorption of the appliance, also taking into account any
other machinery in parallel operation
• the power supply voltage and frequency correspond to the
specications on the appliance's rating plate
• the cables are suitable for the type of installation in accordan-
ce with the applicable IEC standards
• the cable terminals are provided with ferrule terminals of a
cross-section proportionate to the connecting cables before
inserting them into the terminal block
• the power supply is adequately protected against overloads
and/or short circuits
It is mandatory:
• refer to the wiring diagrams in this booklet for any electrical
work.
• connect the appliance to an eective earthing system (the
manufacturer cannot be held responsible for any damage
caused by the appliance not being earthed properly)
• install a dedicated switch-disconnector with delayed fuses or
an omnipolar magneto-thermal circuit breaker conforming
to CEI-EN standards, suitable for the absorption of the equip-
ment, with a dierential relay with a maximum setting equal
to that prescribed by the individual electrical standards
Ensure that an earth connection is made. Do not earth the
appliance to distribution pipes. Improper earthing can result
in an electric shock. Momentary high voltage surges caused
by lightning or other causes could damage the heat pump.
Electrical connections must be made in accordance with the
instructions in the manual and with the national standards or
practices governing the connection of electrical equipment.
Insucient capacity or incomplete electrical connections
could result in electric shock or re.
The power supply line must be adequately dimensioned to
avoid voltage drops or overheating of cables or other devices
placed on the line.
The power supply line must be disconnectable from the rest
of the vessel's electrical supply by means of an omnipolar cir-
cuit breaker, suitable for the absorption of the appliance, with
a dierential relay.
Use a dedicated power supply circuit. Never use a power
supply to which another appliance is also connected becau-
se of the risk of overheating, electric shock or re.
For the electrical connection, use a cable of sucient length
to cover the entire distance without any connection. Do not
use extension cords. Do not apply other loads to the power
supply.
After connecting the interconnection and power cables,
make sure that the cables are arranged so that they do not
exert excessive forces on the covers or electrical panels. Fit
the covers over the cables. Incomplete connection of the co-
vers may result in overheating of the terminals, electric shock,
or re.
Any replacement of the power cable must only be carried
out by qualied personnel and in accordance with current
national regulations.
The manufacturer is not liable for any damage caused by a
lack of earthing or failure to observe the relevant diagrams.
The use of gas and water pipes to earth the appliance is
prohibited.
Connection
Use appropriately sized cables to avoid voltage drops or
overheating.
Read this manual carefully before connecting to the termi-
nals.
To connect the power supply:
– bring the connection cable of the fan coil unit closer together
– make the connections
– bring the power supply cable closer
– make the connections
– connect the command
Follow the wiring diagram of the unit you are installing.
To ensure that the switchboard retains its insulation cha-
racteristics, maintain its integrity.

15
INSTALLATION
2�10 Electrical control diagrams and congurations
Remote control
Electronic board
The circuit board is included in the delivery.
-AB+ Serial connection for wall-mounted remote control (observe AB polarisation)
H2 Water temperature sensor 10 kΩ
FAN EC motor
Y1 Water solenoid valve (voltage output 230 V/50 Hz 1 A)
L-N Power supply connection 230 V/50 Hz
CH Refrigerant consent output (dry contact max. 1 A)
H2
FAN
SUPPLY
230V - 50 Hz
CH
PE
PE

16
INSTALLATION
Error reporting
The on-board board is equipped with a LED to indicate the ope-
rating status.
LED signals
– LED o
Appliance switched o or without power supply
– LED on
Normal operation of the appliance
– LED 1 ash / pause
Water temperature alarm H2 probe not suitable, temporary stop of ventilation until the appropriate value is reached *
– LED 2 ashes / pause
Motor alarm (e.g. jamming due to foreign bodies or rotation sensor failure)
– LED 3 ashes / pause
Water probe disconnected or faulty alarm
– LED 6 ashes / pause
Communication error with the wall control. If there is no communication for more than 5 minutes, the device is switched o.
1. * In case of operation without H2 water probe the fan stop thresholds are ignored.

17
INSTALLATION
Control panel VFC-DSP
Control panel to be ordered separately.
A Clamps
A
The 4 terminals for connecting the wall control and several fan-
coils in series accept:
• Rigid or exible cables with a cross-section of 0.2 to 1 mm²
• rigid or exible cables with a cross-section of 0.5 mm² when
connecting two conductors in the same terminal
• rigid or exible cables with a maximum cross-section of 0.75
mm² if tted with a cable lug with plastic collar
To connect cables:
– 8 mm stripping
– in the case of a rigid cable, easily insert
– in the case of a exible cable, use a pair of pliers with noses
– push the cables all the way in
– check the correct xing by pulling them slightly
A Clamps
A
+
A
B
-
To disconnect cables:
– unscrew the corresponding screw with a screwdriver
– extract the content
When the CP contact, connected to a voltage-free contact, is
opened, the device goes into stand-by mode. The display shows
C P.

18
INSTALLATION
 
WALL MOUNTED REMOTE CONTROL
3�1 Installation
Description
The wall-mounted control panel is a thermostat with possibility
of control on several device equipped with electronic
control for remotization.
The control can control up to a maximum of 10 units.
Mounting
The wall-mounted remote control must be installed:
• on internal walls
• at a height of about 1,5 m from the oor
• awayfrom doors or windows
• away from heat sources (heaters, convectors, stoves, direct
sunlight)
The wall-mounted remote control is provided inside its
package already assembled.
A Notches
A
A
Before wall installation:
– Unhook the protruding notches on the back side of the con-
trol
– separate the base from the control
– use the base of the control to trace the xing point on the
wall

19
INSTALLATION
A Base of the control
B Hole for the wall mounting
C Screws
D Hole for the passage of the electrical connections
AD
B
C
B
For the remote control wall mounting:
– drill holes in the wall
– pull the electric wires through the hole provided
– x the base of the control to the wall using suitable screw
and plugs
– perform the electrical connection
– close the control
Pay attention not to crush the conductors when you close
the control.
3�2 Electric connections of two units with one control panel
Connection diagram
1� Device connection terminal block
2� Electronic board
2
1
2
+A B -
N540022B N540022B
L
N
The connection can be 50 m from board to board for a maxi-
mum of 500 m in total.

20
INSTALLATION
Terminal block position
A Terminal block
A
The spring terminals allow the connection of rigid or exible
cables with sections from 0.2 to 1 mm². For cables provided
with lugs with plastic collar the maximum section is reduced
to 0,75 mm².
Connection to the circuit board
8 mm
0.2 - 1 mm

For connection:
– remove a portion of the insulation from the end of the cable
– follow the connection diagram
– insert the cable into the terminal
– screw tight
– check the correct xing by slightly pulling the cable
Serial connection
The wall-mounted remote control can be connected via an
RS485 line to one or more devices, up to a maximum of 10.
For connection:
– follow the connection diagram
– connect in accordance with indications "A" and "B".
Use a shielded two-core cable suitable for RS485 serial con-
nection with a minimum cross-section of 0.35 mm².
Keep bipolar cable separate from power supply cables.
Lay out a route so as to minimise the length of detours.
Terminate the line with the 120 Ω resistor provided.
Star connections are prohibited.
3�3 Interface
Description
The wall-mounted remote control is an electronic thermostat
with the possibility of controlling several appliances equipped
with an electronic control for remote control.
It is equipped with:
• room temperature probe
• internal memory with data storage even in case of abnormal
shutdown or power failure
The controller can control a maximum of 10 luminaires.
The room temperature probe provides frost protection even
when the control is in stand-by mode.