CLIVET ELFOFresh2 CPAN-U 70-120 Series, ELFOFresh2 CPAN-U 200-650 Series Technical Bulletin
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ELFOFresh²
MAKE UP AND PURIFICATION UNIT WITH ACTIVE THERMODYNAMIC RECOVERY
FOR INDOOR INSTALLATION
Series CPAN-U 70-120 (R134A) and CPAN-U 200-650 (R410A)
▶ SUMMER AND WINTER ACTIVE THERMODYNAMIC RECOVERY
Thanks to heat pump technology, all year-round the active
thermodynamic recovery multiplies the energy contained in
the exhaust air and gets rid of high pressure drops common of
traditional systems.
▶ ELFOFRESH² FULFILLS UP TO 80% OF THE BUILDING
THERMAL REQUIREMENT
The produced heating or cooling capacity reduces the capacity
requested to the integrated air conditioning system,increasing the
seasonal eciency.
Technical
Bulletin
▶ ELECTRONIC FILTERING: PM10, BACTERIA, POLLEN
The electrostatic lter at high eciency is able to get rid of fumes,
ne dust, viruses and bacteria. Its characteristics allow to reduce the
ventilation electric consumptions.
▶ SUMMER DEHUMIDIFICATION IDEAL FOR THE COUPLING
WITH THE RADIANT COOLING
Is the ideal solution to complete radiant systems, thanks to its
outstanding ability to control ambient humidity.
▶ FREECOOLING
Allows to automatically draw fresh air from outside and supply it in
the rooms, at no cost, just by operating the fans.
ELFOFresh2 70 -120 with air ow from 70 to 120 m3/h
ELFOFresh2 200 -650 with air ow from 200 to 650 m3/h
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ELFOSystem GAIA Edition
ELFOFresh2 is the device for the air renewal of ElfoSystem that Clivet has thought for residential installations and oces
System with an eye to the future
It does not use fossil fuels
•
It uses renewable energy from 75 up to 100%
•
Substantially contributes toward reaching the European targets of 20-20-20 by 2020
•
(reduction of CO2 emissions, primary energy and use of renewable energy).
Qualifying proposal
Specialized solution with high value added
•
Single annual cycle system for total comfort
•
Increases the building’s energy eciency by at least 2 classes
•
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A single smart system
A single smart system with all the elements that generate year-round comfort:
Heating
▶
Cooling
▶
Domestic hot water
▶
Fresh air renewal and purication
▶
Humidity control
▶
Simple to install
Industrialized solution that permits a quick and high quality installation
•
Excludes installation and adjustment errors
•
Wirings and connections are clear and precongured
•
Economically convenient
Thanks to the high energy eciency levels it increases the value of the property.
•
The investment pays back for itself in 3-4 years on average
60% reduction of the space in the heating room
•
Complies with the minimum requirements for existing nancial incentives.
•
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ELFOSystem components
Production
High eciency heat pump for the heat/cool and domestic
hot water production
Packaged unit for the comfort by using renewable energy
▶
Integrated system to recover solar energy from thermal
▶
manifolds
Integrated domestic hot water production
▶
System with the best seasonal eciency on the market
▶
Water production up to 60°C, operating with outdoor air
▶
temperature down to –22°C
Air and water version
▶
Pre-assembled control unit
Compared with a traditional combustion system, GAIA
oers three key benets:
It does not require a gas feed, ues and explosion security
▶
systems
Encloses all of the system elements
▶
In a single unit it includes heating, cooling and solar
▶
thermal store
TRADITIONAL SYSTEM
The installation time is DRASTICALLY REDUCED to the best advantage of a QUALITY AND SAFETY result.
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ELFOControl² control
Advanced control system to manage the operation of the entire system
Complete management of the system
▶
Intelligent consumption
▶
Customised comfort levels
▶
A wealth of functions that are easy to manage
▶
Android platform
▶
It optimises heating and cooling with
GAIA
It uses the contribution of thermal solar
sources to produce DHW
It guarantees the availability of domestic
hot water
It freshens and puries air with ELFOFresh²
Complete control over comfort
ELFOControl² is the brain behind your system that communicates with all the
components installed. It checks the operating conditions of each individual device and
allows to adjust the operation of the entire system from a single control centre, on which
the setting of all desired parameters to ensure top comfort levels depends.
ELFOControl² adjusts the temperature of each room, controls the humidity levels,
ensures the quality of the air and the production of domestic hot water. It checks every
aspect of the system in order to ensure the perfect comfort for any kind of need.
Communication with the room thermostat
for temperature and humidity control.
It manages the radiant panels
It manages the room terminals
It manages radiators and heating furniture
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Air renewal ELFOFresh²
Energy-recovery based room ventilation and purication
▶ Active thermodynamic summer and winter recovery
Thanks to the heat pump technology, it multiplies the energy
contained in the air ejected all year round and eliminates the
considerable pressure drops of traditional systems.
▶ Fulll up to 80% of the building thermal load
It reduces the power required from the additional airconditioning system and increases its seasonal eciency.
▶ Electronic ltering
For an eective protection also against the most hazardous
polluting agents (PM10, bacteria, pollen).
▶ Summer dehumidication
Ideal in combination with Radiant cooling.
▶ FREE-COOLING
It allows to draw fresh air from outside and introduce it into
the rooms, at no additional cost, just by operating the fans.
1. Clean air supplied into the rooms
2. Stale air drawn from the rooms
3. Outdoor air intake
4. air exhaust
Aria ELFOAir distribution
The exclusive air distribution system of ELFOFresh²
Versatile installation thanks to the use of walkable exible ducts
▶
The components are easy to select and install
▶
Quality of the air guaranteed by antistatic and antibacterial ducts
▶
Guaranteed result
▶
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ELFORoom² distribution
Cased or uncased water terminal unit for vertical and horizontal installation
▶ Homogenous temperatures at all times
Eliminates air temperature stratications thanks to the
continuous modulation of the fan speed
▶ Reduced consumptions
The exclusive motor enables strong reductions in
consumption
▶ 100% silent operation
The continuous operation of the fan allows the appliance to
always operate at very low speeds, which means the noise it
produces is basically imperceptible.
▶ Puries the air while conditioning
The continuous fan operating allows the unit to operate
always privileging automatically the lower fan speeds in
favour of the silence
▶ Satises all installations
Available in both the vertical and horizontal uncased and
built-in version
Heat distribution systems
ELFODistribution
Heat diusion systems with “room by room” temperature
control
100% guaranteed comfort
▶
The use temperature and humidity thermostats for
environment guarantees optimal comfort conditions for
each single room.
Radiant system management
▶
From the control of the heads to the control of the dew
temperature, every aspect of the system is constantly
monitored and controlled.
Managing systems with radiators
▶
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ELFOFresh²
Requirement: air quality and energy recovery
Building design is changing
New building rules and regulations are changing the
traditional concept of house
These aspects ensure a considerable improvement in the energy
performance of the building envelope in new and renovated
buildings, though they lead to increasingly airtight buildings.
Moreover, the sharp decrease in the required heat load transferred
by transmission leads to a reduction in the building’s energy
demand.
In this kind of environment ventilation acquires un ever increasing
importance in order to ensure ideal comfort, indeed:
indoor pollutants may be trapped inside homes
▶
much more dangerous outdoor pollutants introduced without
▶
any kind of ltering and purifying treatment can be even more
harmful
the energy transferred outside during air renewal is always the
▶
main factor in terms of the building’s energy demand
Fresh and clean air with ecient energy recovery
There is not real comfort with out a proper air renewal rate as odours and harmful substances accumulate inside the house, too.
Therefore, the new building trend illustrated above, which focuses on a considerable improvement of building envelopes, requires a
controlled mechanical renewal system for ambient air to ensure the desired renewal values.
However, introducing fresh air directly is not always a healthy option and involves high energy costs.
Indeed, usually the air we eject has a high energy content that needs to be recovered, though without aecting the systems’ overall
eciency.
Indoor pollutants aect our health and buildings
Outdoor air contains pollutants that are more dangerous, such as particulates and ne
dust, pollen, bacteria and so on.
These aect our health in many ways, including coughs, respiratory diseases, often
chronic, increase in susceptibility to infections, problems to the cardio-circulatory
system.
Outdoor pollutants are more dangerous than indoor ones
Indoor activities generate many pollutants, only some of which are evident as they are immediately perceivable (odours, humidity,
smoke).
In actual fact there are many more sources of pollution that we often do not notice
straight away, such as construction materials, furnishings, dispersed dust, mould and
micro-organisms, cleaning products, carbon dioxide to name but a few.
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The Clivet solution for residential
Compact unit
Fresh air purication and conditioning using the recovery on exhaust air
1. The active thermodynamic system uses heat pump technology to recuperate energy from extract air
2. It operates with 100%
3. Extracts and expels the stale air from the space and recovers its thermal energy
4. It supplies Primary Air
outdoor air
puried and air-conditioned
Advantages
H10 Equivalent ltering eciency
Removes pollutants from the rooms we live in
It expels unhealthy air and, at the same time, introduces puried and air-conditioned outdoor air.
With the electronic lters on outdoor air, acting as high-eciency electrostatic purier, it minimises suspended pollutants such as smoke,
ne dust, viruses and bacteria.
At the same time it reduces electric consumption associated with higher pressure drops common to traditional lters and it also gets rid
of the need to change periodically traditional lters because electronic lters can be regenerated by washing.
COP 5.9 at -5°C outside
Is a high eciency active thermodynamic recovery unit
Unlike traditional systems, the active thermodynamic circuit recovers all year-round the energy contained in the ow of exhaust air, it
multiplies it thanks to heat pump technology and then provides it to the served areas of the building. In this way it minimises load for
conditioning fresh air and provides additional capacity to maintain comfort conditions.
-40% primary energy in heating
Simplies the system and increases its eciency
Thanks to the packaged system construction, the system components and their installation are already included inside the unit.
In addition, the energy generated by the active thermodynamic recovery reduces the power and therefore the cost of the additional airconditioning system. This comprehensive high-eciency reduces the user’s primary energy consumption even up to 40%.
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The Clivet solution
ELFOFresh² 70-120
A compact air renewal and purication unit for houses from 50 to 90 m
Thanks to the new automatic speed control in relation to the pressure drops of the system, the centrifugal fans, which are directly
coupled to a DC motor, ensure a constant air ow rate.
The benets deriving from this design solution are featured along the three development and management stages of the system, indeed:
It simplies the design of the air distribution system, as it is not necessary to take into account extremely small tolerances when
▶
calculating the pressure drops of the system itself.
It makes it easier to install and activate the unit in the event of system congurations carried out during installation that dier from
▶
the ones reported on the project.
In the event of soiled lters or incorrect cleaning of the system, it prevents the machine from going in stand-by or from less than
▶
optimal operation due to a drop in the ow rate.
A. Air intake lter
It puries external renewal air before it is introduced in rooms
with a standard lter (G3). It can be tted with an optional high
eciency electrostatic lter (H10).
B. “Standard” exhaust air lter
These units with reduced power are tted with the internal G2
lter as standard.
2
C. Supply fan
The new control allows to maintain a constant rotation speed as
the system’s pressure drops vary, with 60% less power absorbed
compared to traditional fans.
D. Compressor
R134a airtight rotary compressor chosen to optimise the reduced
power unit with higher performance levels.
E. Exhaust fan
The new control allows to maintain a constant rotation speed as
the system’s pressure drops vary, with 60% less power absorbed.
F. Electrical panel
Easy to access in order to conduct maintenance and take it out
through the openings.
G. White prepainted aluminium unit
H. DN150 air ducts
Air distribution system size designed in relation to the unit size.
I. Internal exchanger
Finned direct expansion exchanger with copper tubes and
aluminium ns
Reduced pressure drops compared to passive recovery units.
L. External exchanger
Finned direct expansion exchanger with copper tubes and
aluminium ns
Reduced pressure drops compared to passive recovery units.
Air renewal in relation to the surface of the house:
Model ELFOFresh² 70 ELFOFresh² 120
Room surface [m2] 40 50 60 70 80 80 90 100 110 120 140 150
Volume of a room with h=2,7m [m3] 108 135 162 189 216 216 243 270 297 324 378 405
Nominal air ow rate [m3/h] 70 70 70 70 70 120 120 120 120 120 120 120
Renewal rate [vol/h] 0,65 5,2 0,43 0,37 0,32 0,56 0,49 0,44 0,4 0,37 0,32 0,3
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ELFOFresh² 200-650
A compact air renewal and purication unit for houses from 150 to 800 m
The heat pump components:compressor, thermostatic valve, fans and coils – are perfectly integrated into the unit and can be easily
▶
accessed for routine maintenance.
The electrical panel can be easily controlled remotely.
▶
The intake section and the air extraction and exhaust section are clearly separated by a steel panel that prevents contamination
▶
between the ows.
A. Air intake lter
It puries external renewal air before it is introduced in rooms
with a standard lter (G3). It can be tted with an optional high
eciency electrostatic lter (H10).
B. “Optional” exhaust air lter
When purchasing the unit, it can be tted with an external return
air lter.
C. Supply fan
It introduces treated air into the room: centrifugal DC electric fan
coupled directly to an electric motor.
2
D. Compressor
It allows to “transfer” heat from exhaust air to renewal air. Airtight
rotary compressor R410A.
E. Exhaust fan
It ejects stale air outdoors: centrifugal DC electric fan coupled
directly to an electric motor.
F. Remote electric panel
The electrical panel can be controlled remotely to make
installation easier.
G. Aluzink unit
H. DN200-250 air ducts
Air distribution system size designed in relation to the unit size.
I. Internal exchanger
Direct expansion nned coil exchanger with copper pipes and
aluminium ns. Reduced pressure drops compared to passive
recovery units.
L. External exchanger
Direct expansion nned coil exchanger with copper pipes and
aluminium ns. Reduced pressure drops compared to passive
recovery units.
Model ELFOFresh² 200 ELFOFresh² 300 ELFOFresh² 500 ELFOFresh² 650
Room surface [m2] 150 200 250 250 300 350 350 500 600 600 700 800
Volume of a room with h=2,7m [m3] 405 540 675 675 810 945 945 1350 1620 1620 1890 2160
Nominal air ow rate [m3/h] 200 200 200 300 300 300 500 500 500 650 650 650
Renewal rate [vol/h] 0,49 0,37 0,3 0,44 0,37 0,32 0,53 0,37 0,31 0,4 0,34 0,3
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The principle of cooling and heating operation
Recovery that does not penalize ventilation
The mechanical, controlled-ventilation system with active recovery involves a unit, with an extremely ecient refrigeration circuit with
reduced air-side pressure drops and signicant energy cost reductions for ventilation compared with traditional static systems.
Active thermodynamic recovery exchangers have high-eciency n batteries that guarantee extremely modest pressure drops during the
entire operating cycle.
Winter operation
The indoor air (A), at a temperature of 20°C, before being released outside
(C) becomes the thermal source of the heat pump passing through the
evaporation coil (B) so that the heat can be recovered.
The cooling uid of the heat pump, after withdrawing the heat from the
exhaust air, through evaporation, releases it to the fresh air (D) through the
condensation coil (E) before to be released into the rooms (F).
Summer operation
Through the 4-way valve, the cooling cycle is inverted so that the “cold”
contained in the exhaust air ow (A), is used in the condensation coil (B)
before being exhausted (C).
The fresh air (D), viene ltrata, is ltered, cooled and subsequently
dehumidied passing through the evaporator (E) before being released into
the rooms (F).
Intermediate season operation (FREE-COOLING/FREE HEATING)
The summer fresh air conditions, especially at night, may be more agreeable
than the indoor ones, at least in terms of temperature.
Houses, in fact, accumulate the heat during the central hours of the day and
then let it during the night. In similar conditions, the ELFOFresh2 technology
allows the air supply in the room at cost zero, “FREE-COOLING”, only with
the fan operating.
The contrary phenomenon, the “FREE-HEATING”, occurs in particular
climatic conditions, e.g. in the South of Italy.
Thanks to modulating fans, is possible to introduce in the room an air ow
higher than the one strectly necessary to the normal renewal.
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ELFOFresh2 improves comfort
It renews air, which increases well-being
The necessity of fresh air in the rooms where we live is a question of hygiene as well as well-being. Air renewal must take place in controlled
conditions so that the air coming from outside is ltered and suited to the desired conditions of temperature and humidity.
Heating temperature
ELFOFresh2 allows the intake of fresh air into the rooms at a temperature
always higher than any other system; particularly in extreme climate
conditions, this avoid for the air intake the low temperatures to compromise
the comfort.
Through the natural ventilation, the air intake temperature corresponds
▶
to the outside air temperature.
By using a passive recovery, the intake temperature is always lower than
▶
20°C and decreases as the outside temperature decreases.
ELFOFresh2, guarantees the comfort down to a temperature of –5°C; at
▶
lower temperatures, however, the intake temperature is maintained at
around 17°C.
Cooling temperature
The natural ventilation has the air intake temperature corresponding to
▶
the outside temperature.
By using a passive recovery during specic hours, the risk is that the
▶
intake air has higher temperature than the outside one.
By using an active recovery, the comfort is always guaranteed: at outdoor
▶
temperature higher than 30°C, the intake temperature is maintained at
16°C.
Humidity control
During summer operations, the active thermodynamic recovery cools and
dehumidies the fresh air.
ELFOFresh2 can be used combined with cooling systems that use radiant
panels (wall, oor, or ceiling), with no need of other dehumidiers installed
in the rooms.
The passive recovery do not perform the fresh air dehumidication, while the
enthalpy rotating recovery are only able to perform a partial dehumidication.
The automatic adjustment of the air ow rate (A) of the direct current fans,
controls the delivery air humidity (C) and the internal room humidity (B).
Air quality
ELFOFresh2 rejects the unhealthy air from bathrooms and kitchen, or from rooms with the higher concentration of pollutants. It also
pre-treats the fresh air, released into the living rooms and the bedrooms, by ltering, humidifying or dehumidifying it and taking it at the
correct temperature. The fresh and healthy air can be always guaranteed in our houses.
All this, with minimum electrical consumption.
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ELFOFresh2 riduces consumptions and increases the value of your home.
Maximum seasonal eciency
Unlike traditional systems, the ELFOFresh2 active thermodynamic circuit recovers the energy contained in the ow of exhaust air, it
multiplies it using heat pump technology and then provides it to the served building with high eciency.
Heating
The ELFOFresh2 energy eciency is very
high because the heat source, with which
such heat pump operates, is the exhaust air,
having favourable conditions.
During winter operation, for example, with
fresh air temperature –5°C and extracted air
at 20°C, the ELFOFresh2 COP is higher than
5.5.
The heating capacity minimizes the fresh air
load, providing further power to maintain
the comfort conditions. The result for users
is a reduction up to 40% of the heat primary
energy consumption than a traditional
system.
Cooling
Besides recovering the exhaust air heat
that, unlike the traditional system also
takes place during summer operation, the
active recovery generates a quantity of
energy supplied to the building also during
summer. In this way, the active recovery
compensate the heat loss through walls and
roof of the building.
Therefore, ELFOFresh2 is able to reduce the
30% of cooling primary energy versus a
traditional system with a passive recovery
and direct expansion system.
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Multiplies the energy recovered from exhaust air
Passive cross-ow recovery unit and 70% eciency rate
The passive recovery unit is able to supply, by recovering it from exhaust
air, only a small percentage of the energy required by the building.
Therefore, the residual demand needs to be provided by a generator,
which in the illustrated case is a traditional boiler.
The system’s seasonal eciency drops considerably due to the poor
contribution of the recovery unit.
Thermodynamic recovery unit
The graph shows how under the same ambient conditions and in the
same building, the part of energy that is recovered and supplied in the
room can be as high as 80% of the overall energy demand.
The favourable conditions ELFOFresh2 operates in and the important
contribution in terms of energy supplied ensure a relevant input to the
seasonal eciency of the whole system.
Improved Energy Eciency Class for the building
ELFOFresh²’s eciency reduces
the absorbed primary energy in
comparison to a traditional system.
The example shows that, having the
same building features (insulation,
doors and windows, etc.), replacing
the crossover ows recovery with
ELFOFresh² unit, the class of energy
eciency increases from C to B.
Also, considering the use of Gaia as
a primary generator, the building
energy class becomes “A”, thus
remarkably increasing the building
value.
NOTES: This ex. refers to the energy eciency classication according to the Italian guidelines, as per Law Decree dated 26 June, 2009, for a single house in Milan, with climate
class E, and with the following features: Floor surface: 200m2; heated gross volume: 600m3; dispersing surface: 440m2; S/V ratio: 0.73m-1. Walls and roof insulation: compared to
the limit U- value as per law (Uwalls: 0.34; Uroof 0.30; Ubasement 0.33; Uwindows: 2.2 W/m2K).
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Flow modulation
The new fans in direct current gave saving 60% for the absorbed capacity
The energetic consumption for the ventilation represents the main cost for the fresh air units.
In order to reduce the operating costs and obtain the highest energy saving, all units have high-eciency fans with electric control in
direct current: an energy saving 60% than traditional fans is guaranteed.
The electronic control the automatic modulation of the air ow that, according to the requirements, can increase, in case of FREE-COOLING,
or decrease for the dehumidication, extending the functional limits, and limiting the optional use of modular electric heaters from 0,7 or
3 kW (optional) only for exceptional situations.
The unit is congurated for 40 Pa available head; by changing some parameters it is possible to reach up to 120 Pa.
The air ow reduction guarantees the comfort during winter operation
In correspondence to the low temperature values of the fresh air (lower than – 5°C), the intake temperature is xed (I), approximately equal
to the indoor air (20°C) using the air ow reduction (A).
This reduction is performed in order to avoid the intake of fresh air in the rooms that might cause the risk of uncomfortable cold draughts.
In this conditions, the active thermodynamic recovery can completely satisfy the ventilation load.
Nominal air ow operating: fulll of the building load in addition of the ventilation
In the range of fresh air temperature between – 5 °C and + 20 °C,
the fresh air ow rate keeps constant (B): the intake temperature
in the room (II) increases as the fresh air temperature increases;
ELFOFresh2, besides compensating the ventilation dispersions, is
able to full, either completely or partially, the building load for
heating of building.
Increase of air ow rate for cooling the rooms in middle season
In the range between + 20 °C and + 25 °C the building might need
being cooled, though without relevant need, it is also possible
to perform the free-cooling, by simply allowing a higher air ow
rate into the rooms and leaving the compressor deactivated (C).
In this case, the eciency is dened as the ratio between the
cooling capacity delivered to the room by the fresh air (directly
proportional to the temperature dierence between outdoor
and indoor, according to the fresh air ow rate) and the absorbed
electric capacity (in such case, only by the fans). Due to the reduced
absorption of the fans, it is possible to reach a very high eciency
in this operating condition. The intake temperature in the room is
exactly equal to the outside one (III).
Reducing the air ow rate to dehumidify
For a more ecient dehumidication of the fresh air, ELFOFresh2 reduces the ow rate by modulating the fan speed (D); in this way, it is
possible to cool the rooms by using radiant panels with a subsequent ecient dehumidication.
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Pure air with the new H10 electronic lters
Increase of the ltration eciency and decrease of the operating costs
Simply introducing untreated outdoor air to dilute indoor pollutants is not a solution, because of additional polluting agents
present in outdoor air.
The new electronic lters available for ELFOFresh2 make fresh air even more ecient and at the same time they reduce costs for ventilation
and maintenance compared with traditional systems.
High eciency lters (F7 category) of a traditional system increase the energy spent on ventilation, because of greater loss of pressure.
And also require more frequent maintenance, with a signicant cost at the end of each year to replace the lters.
The eciency of electronic lter on ELFOFresh2 is equivalent to classication H10 used in traditional lters, that is the category indicated
as “absolute lter”.
These are eective even against:
Smoke
•
Fine dust
•
Particulates PM10, PM2,5, PM1
•
Bacteria
•
Germs and viruses
•
Nano-particle
•
The ventilation energy is reduced
The highest ltration eciency is obtained with practically no pressure drops.
Indeed mechanical ltering is replaced by electronic ltering, which does not prevent air from passing through and ensures negligible
pressure drops.
Air quality always under control
Air ltering is an essential function for ensure proper wellbeing and hygiene conditions are maintained in the areas served.
Moreover, ELFOFresh2’s control reports when it is necessary to clean the electronic lter to always ensure it is used correctly.
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ELFOAir
Clivet’s modular solution
Issues related to the selection, size and installation of the air distribution and the elements tted on a traditional system are eliminated
thanks to ELFOAir, the modular solution to distribute air through manifolds. A clever mix of functionality and reliability, ELFOAir is the
exclusive system that is perfectly combined with ELFOFresh2 to provide fresh air in domestic settings.
Suited to all needs
▶
Simple to install
▶
Minimum Size
▶
Antistatic and Antibacterial
▶
Underoor, false-ceiling and wall installation
In new buildings and redevelopment works on existing buildings ELFOAir is the best solution to fully enjoy the benets of the ELFOFresh2
ventilation system thanks to its stepped exible ducts. These are ideal for underoor applications, as well as for installations in attics and
false ceilings. Specially designed grids and outlets can also be tted and can be perfectly integrated in any kind of architectural context.
Simple to install
ELFOAir is the plug&play distribution system that reduces installation times by 50%. The simple and user-friendly connection between its
elements guarantees a perfect seal and reliability of the distribution system.
Antistatic and Antibacterial
The piping is antibacterial and antistatic ensuring hygiene, sterility and health safety.
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Air renewal in the room
The correct distribution of air in domestic environments.
ELFOAir is the modular air distribution system with manifolds that consists
of an air distribution box, at exible ducts, horizontal and vertical
moulded curves, seal and joint rings, diusers and accessories made with
plastic material and is ideal to guarantee the correct distribution of air in
dierent environments.
The manifold distribution ensures the self-balancing of the system and
▶
therefore guarantees maximum exibility in positioning the supply/
return grids and outlets and the correct air speed inside the ducts.
The distribution to manifolds allows better system balancing and
▶
therefore guarantees maximum exibility in positioning the inlets and
supply/return grilles and the correct air speed inside the ducts.
The exible duct is easy to install and can be connected to all the other
▶
components of the system without the need for special equipment.
The insulation of the channelling removes the risk of condensation
forming on the external surfaces of the ducts themselves.
The ELFOAir Air system includes a comprehensive series of accessories
▶
that are essential to ensure the installation and the perfect operation
of the aeraulic distribution of ELFOFresh
2.
ELFOAir Congurator
Thanks to ELFOAir Congurator, the selection and dimensioning software, the ELFOAir solution is designed in little time and with no errors.
A simple and powerful tool, available from www.clivet.com, that provides an essential support for all professionals to install the ELFOFresh2
air renewal system.
ELFOFresh2 ducts
ELFOFresh2’s connection to the distribution system of the internal and
external air is conducted by using exible insulated circular ducts that
guarantee the thermal and acoustic insulation of the channels.
The antibacterial treatment of the inner surfaces ensures the quality of
the fresh air. The reduced pitch of the spiral ensures a greater mechanical
strength compared to traditional solutions and does not alter the duct’s
cross-section, even if there is a large radius of curvature.
BT15B012GB-00 ELFOFresh² 19
Page 20
Standard unit technical specications
Compressor
Hermetic rotary compressor with gas compression in the crankcase, direct suction, no oil heater. It is mounted on antivibration rubber pads. Includes oil
feed.
Fitted on rubber antivibration mounts and complete with oil charge and suction lter.
Structure
Size 70-120:
Supporting structure made with RAL 9001 prepainted sheet aluminium metal that ensures excellent mechanical features and high long-term resilience
against corrosion. The entire ventilating area is covered with anti-condensation and sound-proof material.
Size 200-650:
Structure made entirely from “aluzink” plate that guarantees excellent mechanical characteristics and high corrosion strength over time. The ventilating
section is completely lined with anti-condensate and soundproong material.
Internal exchanger
Exchanger for the ambient air pre-treatment
Finned exchanger, made from copper pipes arranged in staggered rows and mechanically expanded for better adherence to the collar of the ns. The ns
are made from aluminium with a special corrugated surface, set a suitable distance apart to ensure maximum heat exchange eciency.
The surface of the 70-120 ns of the coils has been subjected to an hydrophilic treatment to make it easier to discharge condensation and reduce frost.
External exchanger
Exchanger for the energy recovery of the extract air
Finned exchanger, made from copper pipes arranged in staggered rows and mechanically expanded for better adherence to the collar of the ns. The ns
are made from aluminium with a special corrugated surface, set a suitable distance apart to ensure maximum heat exchange eciency.
The surface of the 70-120 ns of the coils has been subjected to an hydrophilic treatment to make it easier to discharge condensation and reduce frost.
Refrigeration circuit
Refrigeration circuit with:
refrigerant charge
•
High pressure safety pressure switch
•
suction pressure transducer
•
4-way reverse cycle valve
•
capillary as a laminating device (size 70-120)
•
thermostatic valve like expansion device (size 200-650)
•
Drain pan
Size 70-120:
Thermoformed ABS condensate collection tray tted with drain pipe.
Size 200-650:
Condensate collecting tray in aluminium alloy 1050 H24 with anti-condensate insulation, welded and equipped with discharge coupling.
Fan
Size 70-120:
Brushless centrifugal fan in supplì and expulsion at high energy eciency with single intake directly coupled to the electric motor with scroll and pallets
of metal.
Size 200-650:
Supply and exhaust brushless centrifugal electric fan at high energy eciency with double intake directly coupled to the electric motor with plastic scroll
diam 146 mm and metal pallets.
20 ELFOFresh² BT15B012GB-00
Page 21
Filtration
Pleated lter, made up of a galvanized plate frame with galvanized and electric-welded protective mesh and 100% regenerable polyester ltering media
with PVC resin. G3 eciency according to CEN-EN 779 standard (Eurovent class EU3 - average eciency 84% ASHRAE 52 - 76 Atm). Self-extinguishing
(resistance to re class 1 - DIN 53438). (size 70-650)
Flat lter used for the return of fresh air and ambient air, consisting of a galvanized sheet metal frame with galvanized electrowelded protective meshes and
100% polyester renewable ltering septum with G2 eciency level in accordance with the CEN-EN 779 standard (size 70-120).
Together with the lter is provided the dierential pressure switch in order to signal its cleaning.
Electrical panel
Size 70-120:
Electrical panel located inside the unit and can be easily accessed from the bottom or sides via the removable panels.
Size 200-650:
The electrical panel assembled outside the unit is connected to it by a fast- connect cable (2 m) its remotization in positions where the maintenance/control
of the parameters is easier.
Size 70-650:
The capacity section includes:
compressor and fan fuses
•
fan control contactors
•
compressor control contactor
•
The control section is made up of a card with microprocessor control that allows the unit control according to the dierent air input conditions.
The control section includes:
Probe of the outdoor air temperature.
•
Probe to measure the temperature and supply air humidity of the room
•
Temperature probe of the air return from the ambient (thermostat)
•
Remote On-O
•
Thermostat
The HID-P1 local room control allows:
to control just one ELFOFresh² unit
•
Setting the desired temperature and humidity
•
ON/OFF
•
change Summer/Winter
•
Setting the ventilation-only mode
•
Diagnostics management with specic code according to the type of error
•
Dimensions: 184x82x27 mm
•
The thermostat is connected to the unit via a shielded twisted-pair cable at a maximum distance of 15m.
Outdoor air external bypass damper
Damper that draws air from the fresh air intake and brings it up to the exhaust coil. The damper, by means of an on-o actuator, is opened in summer
operating, with the compressor in operation and with exhaust fan at max. speed, so as to increase the air ow to the condensing coil: In this way, cooling
eciency is increased without creating negative pressure in the room.
Antivibration
Ceiling and oor spring antivibration mounts kit
The anti-vibration kit consists of 4 base spring vibration isolators, 4 M8 nuts, 4 M8 screws
Accessories separately supplied
CDPX: condensate discharge pump (size 70-650)
•
EHPCX: electric heaters 0,7 kW in duct (size 70-120)
•
electric heaters 1,5/3 kW in duct (size 200-650)
FESX: Electronic lter (size 70-650)
•
HSE3LX: Immersed electrode humidier DN200 (size 200-300)
•
HSE3MX: Immersed electrode humidier DN250 (size 500-650)
•
FAEX: Exhaust air lter (size 200-650)
•
CMMBX - Serial communication module to supervisor (MODBUS)
•
ELFOAir distribution
ELFOAir Option list at page 44
BT15B012GB-00 ELFOFresh² 21
Page 22
Conguration Code
1 Supply voltage 230/1/50
Standard power supply
2 Operating mode
- cooling and heating operation (Standard)
OHO Heating-only operation
(size 70 excluding)
Sound levels
Sound power level (dB)
Size
63 125 250 500 1000 2000 4000 8000 dB(A) dB(A)
70 60 65 53 42 37 31 25 24 51 37
120 57 57 58 48 38 32 31 22 52 38
200 59 56 52 49 49 40 33 32 52 39
300 60 57 53 51 51 41 34 33 54 41
500 64 61 57 54 54 45 38 37 58 44
650 66 63 59 56 56 47 40 39 60 46
Sound levels refer to the unit at full load installed on the ceiling, ducted, with nominal fan air ow rate. Available static pressure 40 Pa.
In accordance with the UNI-EN ISO 3744 regulation, the average sound pressure level refers to a distance of 1 m from the outer surface of a ducted unit installed on the ceiling.
Measurements are made in accordance to the UNI EN ISO 9614-2, with units installed over two sound reective surfaces.
If the unit is installed in conditions other than the nominal ones(for instance, near walls or obstacles in generally) the sound levels may undergo substantial variations.
Octave band (Hz)
Sound
power level
Sound
pressure level
22 ELFOFresh² BT15B012GB-00
Page 23
General technical data
Size 70 120 200 300 500 650
Cooling AE 30°C
Cooling capacity 1 kW 0,43 0.81 1.57 2.10 3.01 4.03
Compressor power input 1 kW 0,16 0,28 0.50 0.64 0.92 1.29
Total power input 1 kW 0,19 0.31 0.54 0.70 1.04 1.48
EER 1 2,27 2.58 2.90 3.00 2.91 2.72
Cooling AE 35°C
Cooling capacity 2 kW 0.45 0.85 1.63 2.17 3.13 4.23
Compressor power input 2 kW 0.17 0.30 0.52 0.67 0.98 1.33
Total power input 2 kW 0.20 0.33 0.57 0.73 1.10 1.60
EER 2 kW 2.24 2.54 2.87 2.96 2.86 2.78
Heating AE 7°C
Heating capacity 3 kW 0.52 0.98 1.81 2.33 3.58 5.00
Compressor power input 3 kW 0.14 0.23 0.40 0.54 0.75 1.12
Total power input 3 kW 0.15 0.25 0.44 0.59 0.84 1.27
COP 3 3.38 3.90 4.10 3.93 4.27 3.94
Heating AE -5°C
Heating capacity 4 kW 0.52 0.97 1.86 2.35 3.74 5.10
Compressor power input 4 kW 0.11 0.189 0.32 0.38 0.58 0.85
Total power input 4 kW 0.12 0.21 0.36 0.43 0.67 1.00
COP 4 4.17 4.74 5.17 5.45 5.57 5.12
Compressor
Type of compressors ROT ROT ROT ROT R OT R OT
No. of compressors No 1 1 1 1 1 1
Type of refrigerant R-134a R-134a R-410A R-410A R-410A R-410A
Refrigerant charge Kg 0,32 0,21 0,80 0,75 1,00 1,45
Fans
Type of fans CFG CFG CFG CFG CFG CFG
Number of fans No 2 2 2 2 2 2
Airow mch 70 120 200 300 480 650
Fan power input 5 kW 0,014 0,017 0,040 0,052 0,090 0,150
Available nominal pressure Pa 40 40 40 40 40 40
Max external static pressure Pa 120 120 120 120 120 120
Connections
Condensate drain mm 16 16 26 26 26 26
Power supply
Standard power supply V 230/1/50 230/1/50 230/1/50 230/1/50 230/1/50 230/1/50
Noise Levels
Sound pressure level (1 m) 6 dB(A) 37 38 39 41 44 46
1 - AE 30°C: Data referred to the following conditions:
outdoor air temperature 30°C DB/22°C WB
internal air temperature 27°C DB/19°C WB
Nominal air ow
2 - AE 35°C: Data referred to the following conditions:
fresh air temperature: 35°C BS/ 24.0°C BU
internal air temperature 27°C DB/19°C WB
Nominal air ow
3 - AE 7 °C:Data referred to the following conditions:
outdoor air temperature 7°C DB/6°C WB
internal air temperature 20°C DB/15°C WB
Nominal air ow
BT15B012GB-00 ELFOFresh² 23
4 - AE –5°C:Data referred to the following conditions:
fresh air temperature: -5°C BS/ -5.4°C BU
internal air temperature 20°C DB/15°C WB
Nominal air ow
5 - the fan absorptions refer to the air ows of the heating operation (conditions as
indicated in note (3)) and 40Pa of available pressure
6 - Sound levels refer to units with full load under nominal test conditions.
The sound pressure level refers to a distance of 1 meter from the outer surface of the
unit operating in open eld.
Page 24
Electrical data
Size 70 120 200 300 500 650
F.L.A. - Full load current at max admissible conditions
F.L.A. - Compressor 1 A 0,87 1,62 2.20 3.10 5.13 6.80
F.L.A. - Single supply fan A 0,30 0,90 1.20 1.20 1.20 1.20
F.L.A. - Single exhaust air fan A 0,30 0,90 1.20 1.20 1.20 1.20
F.L.A. - Total A 1,47 3,42 5.60 6.50 8.53 10.2
L.R.A. - Locked rotor amperes
L.R.A. - Compressor 1 A 4,35 8,10 12.0 16.5 25.2 37.0
F.L.I. - Full load power input at max admissible conditions
F.L.I. - Compressor 1 kW 0,19 0,34 0.47 0.69 1.10 1.52
F.L.I. - Single External Fan kW 0,037 0,115 0.165 0.165 0.165 0.165
F.L.I. – Single exhaust air fan kW 0,037 0,115 0.165 0.165 0.165 0.165
F.L.I. - Total kW 0,264 0,57 1.03 1.25 1.66 2.08
M.I.C. Maximum inrush current
M.I.C. - Value A 4,95 9,9 14.4 18.9 23.4 39.4
power supply 230/1/50 Hz +/-10%
Electrical input of optional components
To obtain the electrical input of the unit including accessories, add the standard data in Electrical Data table to those for the selected accessories.
Size 70 120 200 300 500 650
F.L.A. - Full load current at max admissible conditions
F.L.A. EHPCX - Preheating electric heaters from 0.7 kW A 3,04 3,04 - - - -
F.L.A. EHPCX - Preheating electric heaters from 1.5 kW A - - 6,5 6,5 - -
F.L.A. EHPCX - Preheating electric heaters from 3 kW A - - - - 13 13
F.L.A. HSE3MX/HSE3LX - Electrode boiler steam humidier from 3 kg/h A - - 9,8 9,8 9,8 9,8
F.L.A. FES/FESX - Electronic lter A 0,1 0,1 0,1 0,1 0,1 0,1
F.L.A. CDP - Condensate discharge pump A 0,07 0,07 0,07 0,07 0,07 0,07
F.L.I. Power consumption
F.L.I. EHPCX - Preheating electric heaters from 0.7 kW kW 0,7 0,7 - - - -
F.L.I. EHPCX - Preheating electric heaters from 1.5 kW kW - - 1,5 1,5 - -
F.L.I. EHPCX - Preheating electric heaters from 3 kW kW - - - - 3 3
F.L.I. HSE3MX/HSE3LX - Electrode boiler steam humidier from 3 kg/h kW - - 2,25 2,25 2,25 2,25
F.L.I. FES/FESX - Electronic lter kW 0,025 0,025 0,025 0,025 0,025 0,025
F.L.I. CDP - Condensate discharge pump kW 0,016 0,016 0,016 0,016 0,016 0,016
24 ELFOFresh² BT15B012GB-00
Page 25
Electrical input of the fan
Electrical input of the single fan in conditions of standard ow in heating.
• outdoor air 7° C
• return 20°C 50%
Pressure drops of optional components
The value of static pressure available on the supply and return duct is obtained by subtracting from the available net maximum pressure (see general table
of technical data) the pressure drops of any accessories.
Size 70 120 200 300 500 650
EHPCX - Preheating electric heaters from 0.7 kW Pa 7 9 - - - -
EHPCX - Preheating electric heaters from 1.5 kW Pa - - 3 5 7 9
EHPCX - Preheating electric heaters from 3 kW Pa - - 3 5 7 9
HSE3MX/HSE3LX - Electrode boiler steam humidier from 3 kg/h Pa - - - - - -
FES/FESX - Electronic lter 1 Pa -8 -12 -7 -11 -6 -10
FAEX - Exaust air lter 2 Pa - - 9 15 11 18
The values shown are to be considered approximate for units operating power in normal use with standard air ow rate.
1. Pressure drop dierences compared to standard G3 pleated lters
2. Pressure drops with lters with average dirtiness
BT15B012GB-00 ELFOFresh² 25
Page 26
Operating limits
Cooling
A. Outdoor air temperature (°C)
B. Indoor Return Air Temperature [°C]
The limits are meant as a guide. Please note that they have been
calculated by considering:
• general and non specic sizes
• clean coils and lters,
• straightforward unit installation and correct use and
maintenance of the unit itself.
1. operating range with outdoor relative humidity < 40%
2. Zone of possible operation in FREE-COOLING
Heating
Outdoor air temperature (°C)
A. Outdoor air temperature (°C)
B. Indoor Return Air Temperature [°C]
The limits are meant as a guide. Please note that they have been
calculated by considering:
• general and non specic sizes
• clean coils and lters,
• straightforward unit installation and correct use and
maintenance of the unit itself.
• relative humidity of the return air > 50%
1. zone of possible operation in Free Heating
2. the broken line identies the operation limit of the standard
unit with internal relative humidity < 40%
3. operating range with return air ow modulation. In case of a
long permanence in this zone it is recommended the use of
the “electrical resistance of modulating pre-heating” accessory.
26 ELFOFresh² BT15B012GB-00
Page 27
Design criteria
ELFOFresh2 size selection
ELFOFresh² is available in the sex sizes, with air ow rate respectively of 70 - 120 - 200 - 300 - 500 - 650 m³/h.
The ELFOFresh2 recovery size is selected according to the air exchange volumes.
In the framework of “residential” ventilation, the calculation of the necessary air ow rate according to the type of house can be performed through the air
renewal method, i.e. the number of times that it is necessary to integrally change the air in the room over a specic period (generally, it is considered as no.
of changes/hour or volumes/hour).
As for houses, it is a good habit to perform air renewals of 0.5 volumes/hour, max. 1 volume/hour.
Example
To illustrate the design criteria of ELFOFresh2 the following shows a typical application example that focuses on a house of 180 m2 consisting of 9 rooms. The
table lists the size of the rooms and the air ow rates of the individual rooms calculated on the basis of the size of the selected ELFOFresh2.
Room Surface Height Volume Flow-rate
m² m m³ m³/h
Livingroom 50 2.7 135 90
Air supply
Extraction
Other Corridor 13 2.7 35.1 0
If during the planning stage one considers choosing a renewal rate of 0.5 Volumes per hour, the renewal capacity will be the product of the home volume
multiplied by the rate of renewal.
In our example, it will be 486m3 x 0.5 = 243 m3/h.
The size of ELFOFresh2 to be selected may be 200 or 300 depending on the lower or higher rate of air exchange that is required.
ELFOFresh2 200 renewal rate = 200/486 =0,41 Vol/h
ELFOFresh2 300 renewal rate = 300/486 =0,61 Vol/h
1 room 12 2.7 32.4 20
2 room 13 2.7 35.1 20
3 room 25 2.7 67.5 45
Study room 14 2.7 37.8 25
Kitchen 24 2.7 64.8 100
1 bathroom 15 2.7 40.5 50
2 bathroom 14 2.7 37.8 50
BT15B012GB-00 ELFOFresh² 27
Page 28
It should be highlighted that the calculated renewal rate refers to the total volume of the house. In fact, since the supply takes place in the noble rooms and
the removal from the technical rooms, the actual renewal in the individual rooms is greater than the total renewal rate.
For example, if we choose to use the ELFOfresh2 200, the renewal rate in the noble rooms (total noble room volume = 307.8 m3) is 200/307.8 = 0.65 Vol/h
while the rate of renewal in the technical rooms (total technical room volume = 143 m3) is 200/143 = 1.39 Vol/h.
Dening airow rate for each individual room
The last column of the table shows the air ow rates necessary for each individual room to ensure proper exchange of air. The room designated as corridor
has no supply or extraction grille because it is an area used by the occupants to move between the various rooms and where the renewal air is blown into
the noble rooms for the corridor in order to be sucked into the technical rooms.
The renewal air airow for each noble room can be calculated using the rate for noble rooms, i.e. 0.65 Vol/h multiplied by the volume of the individual room.
Example: living room = 135 m
Similarly the return airow rates for each single room is equal to the rate of renewal in the technical rooms multiplied by the volume of the room.
Example: bathroom = 40,5 m
Once the air ow rates have been dened for each room you need to dene the type of grille to be used according to the installation (ceiling, wall, oor)
and the best distribution of air in the room.
As you can see in the example, a decision was made to use AIRJET diusers which due to their characteristics, provide adequate air launch which allows the
entire volume of the room to be aected and jointly a modest and conned aeraulic distribution in the false ceiling in the corridor.
In the living room, due to the conformation of the room and maximum airow rate of the AIRJET diuser, a decision was made to split the input ow into
two points.
3
air ow = 135 x 0,65 = 88 m3/h rounded to 90 m3/h
3
air ow = 40,5 x 1,39 = 56,9 m3/h rounded to 50 m3/h
Note: where the designer would follow the UNI EN 10339 technical regulations, he must consider the overcrowding respecting the requested parameters
of 11 l/s (40m3/h) of air renewal per person and at least 4 volumes per hour of air renewal in the bathroom.
28 ELFOFresh² BT15B012GB-00
Page 29
Reading of graphics about ELFOFresh2 operation and performances criteria
The graphic refers to size 300 and to standard set-point for a residential application and represents the trend of three variables at the fresh air temperature
changing:
A. COP/EER of the unit
B. Set-point temperature
C. Supply air temperature in the room
The variation of the air supply temperature in the room is usefull to understand the unit operating.
In the rst stretch from –15°C to –5°C in heating the return temperature is mainteined to a comfort value (in the example 17°C) by the modulation of the
return airow in the room.
To maintain the nominal air renewal it is possible to use the pre-heating modulating electrical heater option in duct. In the stretch from –5°C to +13°C, where
the unit operates with a nominal airow and with the compressor still operating, the supply air temperature increases at the outside temperatureincreasing.
Typically in the range of temperatures between+13°C and +20°C the compressor operates in an on-o operating (satised thermoregulation) and the actual
supply temperature is represented by the broken line that is the average between the one that occurs when the compressor is on and the one when the
compressor is o that is equal to outdoor temperature(the unit operates automatically in ventilation only).
In the stretch from 20°C to 24°C, assuming an ambient set-point higher than the outdoor temperature, the compressor is always o and the unit operates
in FREE-COOLING, i.e. in ventilation only.
In this operating mode the “COP” is maximum, in fact the only power input is that of EC fans and the input, although low, increases with the increasing of
the temperature dierence between outdoor and indoor.
In the next stretch from 24°C to 30°C the compressor is activated in cooling and the supply temperature is around 13-17°C to satisfy the thermoregulation.
In general, the ELFOFresh2 in cooling will adjust the fan speed whenever is necessary to decrease the humidity level in the room, according to the set value.
This behaviour is shown in the example from 30°C to 38°C with an inner set of 26°C with 50% of humidity. At 38°C outside the ELFOFresh2 maintains in
supply a specic humidity of 10,5 g/kg with a ow reduction of 50% from nominal 300 mch to 150.
BT15B012GB-00 ELFOFresh² 29
Page 30
ELFOFresh2 operation and performances criteria
Overow
In the graph are represented the following variables:
D heating / cooling capacity [W]
E Power input [W]
F specic indoor humidity [g/Kg]
G specic outdoor humidity [g/Kg]
H specic supply humidity [g/Kg]
I supplied air ow [mch]
As indicated in the graph of the previous page hereinafter are highlighted the 6 standard operating range:
Heating with modulation of air ow in the room: the performance decreases due to the reduction of the air ow necessary to maintain to a comfort level the
supply temperature (in the example it is supposed 17°C). By the use of the modulating electrical resistances (optional) the comfort remains at the highest
levels without penalizing the air renewals in the room.
Heating: the heating performance is constant and independent from the outdoor temperature and therefore, at its decreasing, the colder air temperature
on the handling coil decreases the condensation decreasing the compressor power input. This behaviour is highlighted by the COP increasing.
Compressor on-o in heating: depending on the room set satisfaction, compressor on periods will alternate with ventilation only periods, their duration will
increase at the outside temperature increasing.
FREE-COOLING: the air ow increases to utilize at maximum the “free” energy of the FREE-COOLING
Cooling: modulating the air ow, the unit tries to keep the input air temperature at optimal comfort levels.
Air ow modulation for dehumidication in cooling: the reduction of the air ow in cooling allows to have an input air with an humidity equal to the
humidity set in the room.
Introducing fresh air with controlled humidity in rooms as the daytime area and the bedrooms and rejecting air from rooms that produce humidity (kitchen
and bathrooms) means to avoid the increasing of the humidity in the room.
30 ELFOFresh² BT15B012GB-00
Page 31
ELFOFresh2 70 operation and performances criteria
In the graph are represented the following variables:
A. Performance coecient in heating (COP) and in cooling (EER): it is the ratio
between the delivered capacity and the capacity absorbed by the compressor, the
auxiliary circuit and from fans considering an available pressure of 50 Pa;
B. Desired temperature in the room
C. ELFOFresh
2
supply air temperature in the room
In the graph are represented the following variables:
D heating / cooling capacity (W)
E Power input (W)
F specic indoor humidity (g/kg)
G specic outdoor humidity (g/kg)
H specic supply humidity (g/kg)
I supplied air ow (mch)
BT15B012GB-00 ELFOFresh² 31
In places where the outdoor air temperature falls down -5°C for many hours a year it is recommended
to use the EHPCX accessory - heater kit in duct
Page 32
ELFOFresh2 120 operation and performances criteria
In the graph are represented the following variables:
A. Performance coecient in heating (COP) and in cooling (EER): it is the ratio
between the delivered capacity and the capacity absorbed by the compressor, the
auxiliary circuit and from fans considering an available pressure of 50 Pa;
B. Desired temperature in the room
C. ELFOFresh
2
supply air temperature in the room
In the graph are represented the following variables:
D heating / cooling capacity (W)
E Power input (W)
F specic indoor humidity (g/kg)
G specic outdoor humidity (g/kg)
H specic supply humidity (g/kg)
I supplied air ow (mch)
32 ELFOFresh² BT15B012GB-00
In places where the outdoor air temperature falls down -5°C for many hours a year it is recommended
to use the EHPCX accessory - heater kit in duct
Page 33
ELFOFresh2 200 operation and performances criteria
In the graph are represented the following variables:
A. Performance coecient in heating (COP) and in cooling (EER): it is the ratio
between the delivered capacity and the capacity absorbed by the compressor, the
auxiliary circuit and from fans considering an available pressure of 50 Pa;
B. Desired temperature in the room
C. ELFOFresh
2
supply air temperature in the room
In the graph are represented the following variables:
D heating / cooling capacity (W)
E Power input (W)
F specic indoor humidity (g/kg)
G specic outdoor humidity (g/kg)
H specic supply humidity (g/kg)
I supplied air ow (mch)
BT15B012GB-00 ELFOFresh² 33
In places where the outdoor air temperature falls down -5°C for many hours a year it is recommended
to use the EHPCX accessory - heater kit in duct
Page 34
ELFOFresh2 300 operation and performances criteria
In the graph are represented the following variables:
A. Performance coecient in heating (COP) and in cooling (EER): it is the ratio
between the delivered capacity and the capacity absorbed by the compressor, the
auxiliary circuit and from fans considering an available pressure of 50 Pa;
B. Desired temperature in the room
C. ELFOFresh
2
supply air temperature in the room
In the graph are represented the following variables:
D heating / cooling capacity (W)
E Power input (W)
F specic indoor humidity (g/kg)
G specic outdoor humidity (g/kg)
H specic supply humidity (g/kg)
I supplied air ow (mch)
34 ELFOFresh² BT15B012GB-00
In places where the outdoor air temperature falls down -5°C for many hours a year it is recommended
to use the EHPCX accessory - heater kit in duct
Page 35
ELFOFresh2 500 operation and performances criteria
In the graph are represented the following variables:
A. Performance coecient in heating (COP) and in cooling (EER): it is the ratio
between the delivered capacity and the capacity absorbed by the compressor, the
auxiliary circuit and from fans considering an available pressure of 50 Pa;
B. Desired temperature in the room
C. ELFOFresh
2
supply air temperature in the room
In the graph are represented the following variables:
D heating / cooling capacity (W)
E Power input (W)
F specic indoor humidity (g/kg)
G specic outdoor humidity (g/kg)
H specic supply humidity (g/kg)
I supplied air ow (mch)
BT15B012GB-00 ELFOFresh² 35
In places where the outdoor air temperature falls down -5°C for many hours a year it is recommended
to use the EHPCX accessory - heater kit in duct
Page 36
ELFOFresh2 650 operation and performances criteria
In the graph are represented the following variables:
A. Performance coecient in heating (COP) and in cooling (EER): it is the ratio
between the delivered capacity and the capacity absorbed by the compressor, the
auxiliary circuit and from fans considering an available pressure of 50 Pa;
B. Desired temperature in the room
C. ELFOFresh
2
supply air temperature in the room
In the graph are represented the following variables:
D heating / cooling capacity (W)
E Power input (W)
F specic indoor humidity (g/kg)
G specic outdoor humidity (g/kg)
H specic supply humidity (g/kg)
I supplied air ow (mch)
36 ELFOFresh² BT15B012GB-00
In places where the outdoor air temperature falls down -5°C for many hours a year it is recommended
to use the EHPCX accessory - heater kit in duct
Page 37
Accessories separately supplied
EHPCX - Kit of modulating pre-heating electric heaters in duct for fresh air low temperatures
In places where the outdoor air temperature falls down –5°C for many hours per year it is
recommended to use the heater kit in duct.
In fact, the standard unit, to maintain an adequate level of comfort in the rooms, at low temperatures,
operates in modulation of inlet air ow.
With this kit is no more necessary the air ow modulation and therefore it does not penalize the air
renewal in the rooms. The resistance is equipped with an electronic control to modulate the capacity
depending on the outside temperature variations to maintain a correct supply air temperature.
Consumptions are at minimum necessary.
(AE) fresh air inlet
(ES) Exhaust air
(M)Ambient air supply
(R) Ambient air return
CDPX - Condensate drain pump
Centrifugal condensate discharge pump that guarantees an optimal condensate downow
everytime it is not possible to have a proper downow by gravity.
The capacity is 7 liters per hour, with a prevalence of 6 meters. The packaged structure includes
a oating chambre with two levels of intervention: the rst level starts up itself the pump while
the second level is a safety level that intervenes in case of diculty of the pump in the downow
stopping the unit.
Size 70 120 200 300 500 650
0,7 kW - - - -
1,5 kW - - - -
3 kW - - - -
Condensate drain pump
FESX - Electronic lter
The lter is made up of an electronic cell with ltering capacity no lower than H10 specically suitable against ne
dust, microbe loads and allergenic elements.
The cell is easily accessible for cleaning from both underneath and the side through special doors
The cell is equipped with an integrated control electronic card and it can also be supplied as an accessory delivered
separately, replacing the standard air lter G3.
FAEX - Exaust air lter
The lter is positioned on the ambient air inlet and it allows the compressor and exhaust
coil to protect from the fouling when there are no lters on the return outlets.
This option is available only for sizes from 200 to 650, since there is an exhaust air lter
standard assembled inside the unit in sizes 70-120.
(AE) fresh air inlet
(ES) Exhaust air
(M)Ambient air supply
(R) Ambient air return
BT15B012GB-00 ELFOFresh² 37
Page 38
HSE3LX: Immersed electrode humidier DN200 (size 200-300)
HSE3MX: Immersed electrode humidier DN250 (size 500-650)
For the ambient air humidifcation it is possible to mount in the outlet duct a humidier with steam distributor. The regulation of steam production, realized
from the electronic of Elfofresh2 unit, can be modulated according to setpoint and relative humidity from the ambient thermostat probe (necessary in
presence of humidier). The humidifer is equipped with power supply and water inlet/outlet and it needs only the replacemnet of the cylinder boiler when
the limestone deposits exceed the available limits.
steam distribution
(AE) fresh air inlet
(ES) Exhaust air
(M)Ambient air supply
(R) Ambient air return
steam production
In the event of limited space, the steam production module can be separated from the steam
distribution module and installed in another position, for example, wall-mounted, up to 4
meters away. The steam tube rising segment must maintain a gradient no lower than 20°.
CMMBX - Serial communication module to supervisor (MODBUS)
This enables the serial connection of the supervision system and to the ELFOControl2, using Modbus as the communication protocol.
It enables access to the complete list of operational variables, commands and alarms.
Using this accessory every unit can dialogue with the main supervision systems.
38 ELFOFresh² BT15B012GB-00
Page 39
Project criteria for the ELFOAir system
ELFOAir is the aeraulic distribution system that Clivet designed to complete their range of fresh air solutions with active thermodynamic recovery.
Drawing up a project and building the aeraulic distribution system correctly is a fundamental premise to benetting fully from the fresh air produced by
ELFOFresh2 with thermodynamic recovery.
Incorrect choices in dening the parts and their positions can jeopardise the level of comfort in the house and even jeopardise the correct operation of the
unit itself.
The ELFOAir system is the means through which ELFOFresh2 provides fresh air inside houses, to guarantee the perfect operation of the distribution system
ELFOAir was designed to oer complete compatibility with all of the ELFOFresh2 units using the least possible number of elements to oer a complete
solution that is simple to select and install at the same time.
The ELFOAir system must satisfy the following criteria:
• reduced air speed: the high air speed in the ducting can cause noise. To avoid this, it is advisable to maintain the air speed below 3 m/s to ensure there
is no noise, even at night, at a time when there is almost no background noise in the room.
• low pressure drops: the lower the pressure drops, the lower the energy used for ventilation.
In the lay-out project for the ducts it is also advisable to take into account the following solutions:
• it is necessary to try and reduce their extension as much as possible, as well as the use of parts such as curves, which increase drops in pressure;
• plan to install the correct return lter accessory (FAEX) in sizes from 200 to 650 to avoid dust and other forms of dirt from fouling the ELFOFresh²
recovery heat exchanger
To select the right system parts, simply follow the check list below:
Positioning the ELFOFresh2 unit.
Position of the outdoor air inlets/exhaust
Denition of the outdoor air ducting
Dening the supply/extraction outlets and dumpers
Denition of the room’s distribution system
Inspection of the system’s pressure drops
Positioning the ELFOFresh2 unit.
The active thermodynamic recovery of ELFOFresh2 can be set up anywhere inside the house, nevertheless it is preferable to opt for installation in utility
rooms, laundry rooms or bath anterooms. It is not advisable to install it in bedrooms and adjacent rooms, as the reduction in background noise at night,
even with extremely quiet units such as ELFOFresh2, could diminish the quality of sleep.
It is advisable to install it near the fresh air outlets in order to reduce the length of the relative ducts and in a position that is central to all of the rooms
provided with ventilation.
Position of the outdoor air inlets/exhaust
The fresh air intake must be positioned in a zone where the concentration of impurities (dirt, odours, exhaust, etc..) in the air is low enough, not too close to
the ground to protect it from dust and other volatile impurities that could be sucked up by ELFOFresh2.
The air exhaust must be positioned outside the home. Avoid areas that are against the wind and place it away from terraces, balconies and bordering
properties.
There must be at least 2 metres between the inlets and the exhaust to prevent a “short-circuit” between the two air ows. If this is not possible, install the
grilles next to each other and position the openings with the two air ows facing opposite directions.
Denition of the outdoor air ducting
The ELFOAir system uses exible insulated tubes to channel fresh air to and from ELFOFresh2, with a diameter of 150mm for sizes 70-120, with a diameter
of 200mm for sizes 200-300 and a diameter of 250mm for sizes 500-650. In order to reduce the drops in pressure it is good practice to try and reduce the
extension of the ducts and the number of curves to a minimum in the project.
ELFOFresh2, thanks to the anti-intrusion dumpers on the fresh air outlets, the metal pre-lter and the ecient ltering section, does not require the
installation of additional lters on the fresh air intake duct.
BT15B012GB-00 ELFOFresh² 39
Page 40
Denition of the supply/extraction grilles
To ensure the air in the rooms is puried correctly, rst dene the position of the inlets and outlets, considering that the renewal air inlets must be tted in
the main areas(living and room), while stale air must be extracted from utility rooms (kitchen and bathrooms).
The following fall into the category of service rooms: the kitchen, bathrooms, laundry room, closets; other rooms where sometimes you might provide
return grilles are large walk-in wardrobes and mezzanines where generally the phenomenon of air stratication occurs.
The following fall into the category of noble rooms: the living room, bedrooms and studies; in each of these rooms it is essential to have one or more inlets
for fresh air intake.
The supply inlets must be positioned according to the type of inlet that is used:
the AIRJET 50/l or 80/l diusers (DAIR50X and DAIR80X), due to their high induction diusion characteristics,
•
allow an even spread of air entering the room. This particular feature allows you to place the grille only at the
top of the vertical walls, e.g. above the door or in the most appropriate position to direct the airow in order
to have a comprehensive eect in the whole room.
SUPPLY WITH AIRJET DIFFUSERS
the square grilles (GIVEX and GINOX) do not permit an air launch at the outlet of the grille itself and so their
•
position must be at the farthest point in such a way that the air ow from the outlet to the door in the direction
of extraction, aects the whole environment. The rectangular grilles can be installed at oor level or on the wall
at electric socket height or near the ceiling.
the square grille (GQIEX) or the valve (VIEX) do not permit an air launch at the outlet of the grille itself and so
•
their position must be at the farthest point in such a way that the air ow from the outlet to the door in the
direction of extraction, aects the whole environment. The grilles must be positioned on the wall near the
SUPPLY FROM BELOW
ceiling or on the ceiling.
The air must always be extracted from above by positioning one or more outlets in all the rooms with higher
humidity and pollutant levels.
The ELFOAir system uses the same grilles for extraction as for supply except for the AIRJET 50/l and 80/l diusers
that are replaced by AIRJET 50/A and 80/A suction grilles.
DOWNWARD AIR FLOW
The grilles or valve (GIVEX, GINOX, GQIEX, VIEX) used in extraction must only be placed high up or on the ceiling.
Note: It is essential to make sure that there are no objects in front of the openings/grilles (furniture, wardrobes, etc.) that could interfere with the normal air
circulation in the rooms.
The supply air ow (extraction) must therefore be determined for each single room as follows:
The supply renewal rate (extraction) is calculated as the relationship between the total volume of the rooms where the air is supplied (extraction) and
ELFOFresh2’s rated air ow and this is multiplied by the volume of the room.
The number of openings/grilles to use for each room depends on the air ow of each room, bear in mind the maximum air ow allowed for each opening.
Note: It is good practice to make sure the rooms have a renewal air ow of at least 20 m³/h per person.
Note: If in one room there is a supply point and a return point (e.g. single kitchen-living room) it is necessary to make sure that you do not create a by-pass i.e.
that the air blown into the room is not immediately sucked away without aecting the environment. In this situation you should place the supply point low
down and extraction point high up on opposite walls in the room, or have the supply provided by AIRJET diusers and extraction from the same position.
40 ELFOFresh² BT15B012GB-00
Page 41
Denition of the room’s distribution system
The air distribution in ELFOAir is a “manifold” system and therefore consists of one or more distribution
boxes (manifolds) where exible hoses are “attached” to it to supply the openings/grilles of the ventilation
system.
This kind of solution oers 2 great advantages:
using a single duct in terms of diameter, facilitating installation considerably
•
avoid noise migration from one room to another through the ducting
•
There are two available distribution boxes: the rst has 8 ttings (4 on each side) and the second features
14 ttings (8 on the front and 6 on the side).
The choice of the box depends on the number of ducts required, the position of the duct connections on
the distribution box based on the available spaces and maximum airow.
To ensure optimally balanced distribution, it is preferable to install the distribution boxes in a central position in relation to the outlets that supply openings
(see the gure to the side).
Air ow adjustment for each outlet is provided by calibrating the control system present in each specic outlet except for the rectangular grilles (GIVEX and
GINOX) where you must use a separate ow regulator (REPPX) to be placed at the entrance to the at tube.
Flexible ducts that are used by the ELFOAir system from the distribution box to the outlets can be of two types:
•
•
Both the tubes can be ceiling-mounted or buried in the screed as their mechanical characteristics aord resistance to crushing. The at tube dimensions
allow a reduction in the thickness of the screed, as shown in the drawing.
The length of each duct is determined based on the route that connects the box to the grille.
If the path from the distribution box to the inlet involves bends in tight spaces, the use of one or more stamped elbows will be required.
Since the pressure drops with each bend are signicant, it is a good idea to try to avoid their use whenever possible.
TFT90X round exible tube with DN90 outer diameter and inner diameter of
78 mm, suitable for a maximum ow rate of 60m3/h (v = 3.48 m/s). For higher
ow rates, only for the square grille (GQIEX) or the valve (VIEX), you can use
two ducts on the same line thanks to the A90DPX adapter. The round exible
tube must be insulated with a special IT90X isolation, since, under certain
transitional conditions, the supply ow temperature could cause condensate
build-up.
TFPNX at exible tube with 52 mm height and 132 mm width (section
0.0041m2), suitable for a maximum airow rate of 50m3/h (v = 3.38 m/s). For
higher ow rates, only for the square grille (GQIEX) and the valve (VIEX), you
can use two ducts on the same line thanks to the A90DPX adapter. The at
exible tube must be insulated with a special IT100X isolation, since, under
certain transitional conditions, the supply ow temperature could cause
condensate build-up.
Inspection of the system’s pressure drops
Once the layout for distribution has been determined it is necessary to make
sure that the pressure drops in the supply and extraction sections do not
exceed the maximum available pressure of the ELFOFresh2 fresh air unit.
When checking the distribution system, take into account all of the elements
that cause pressure drops.
For the supply section: fresh air intake grille, fresh air ducts, pre-heating heater
(if any), ducts to the distribution box, humidier (if present), exible extraction
ducts, outlets/grilles for supply and generated pressure drops for balancing
the system through the integrated control system in the outlets or through the
ow rate controllers (only for rectangular GIVEX and GINOX grilles).
For the extraction section: fresh air exhaust grille, fresh outdoor air ducts,
return air lter, ducts to the distribution box, humidier (if present), exible
extraction ducts and outlets/grilles for extraction and generated pressure
drops for balancing the system through the integrated control system in the
outlets or through the ow rate controllers (only for rectangular GIVEX and
GINOX grilles).
Note: the use of the electrostatic FES lter in place of the standard folded FAS lter allows you to reduce considerably the pressure drops in the supply
section and therefore save energy on ventilation.
The pressure drops of each single part vary in relation to the air ow, while the pressure drops of the ducting also change depending on the length of the
duct.
In the next “accessory section” are shown the pressure drops of each element of the system ELFOAir.
Since ELFOAir, a system of distribution manifolds, the analysis of total pressure drops is greatly simplied.
The pressure drops that the ELFOFresh2 must win downstream of each box of distribution coincide with the loss of load higher among all those of the
individual ducts to it connected.
BT15B012GB-00 ELFOFresh² 41
Page 42
So one just needs to identify the supply and extraction duct, which features the highest pressure drops.
(Normally it is the duct more extended or the one with the greatest number of curves)
The pressure drop in the supply/extraction section is therefore equal to the sum of the drops in pressure of its parts (openings, ducting, ducts), considering
the duct with the highest pressure drop for the supply/extraction ducts.
If the total pressure drop of the single sections is greater than the maximum available pressure, the distribution layout will need to be reviewed in order to
fall within this limit.
ELFOFAir Congurator SELECTION SOFTWARE
If done manually, sizing and checking the ELFOAir system requires an excellent knowledge of uid dynamics.
ELFOFAir Congurator is an essential work tool that Clivet has put at the disposal of all professionals in order to make these operations simple, quick and
absolutely reliable.
Just enter a small amount of data regarding the home and ELFOAir’s distribution system and the software will
automatically and rapidly:
•
•
calculates the pressure drops on both sections
generates a complete bill of materials for the ELFOAir system.
42 ELFOFresh² BT15B012GB-00
Page 43
Air distribution examples
Here are two typical examples of ELFOFresh² air distribution depending on the size of the unit.
ELFOFresh2 70-120
ELFOFresh2 200-300
BT15B012GB-00 ELFOFresh² 43
Page 44
Option compatibility
Description REF. Description
DAIR50X AIRJET 50/I supply diuser - white frame and black inside X X X X
DAIR80X AIRJET 80/I supply diuser - white frame and black inside X X X X
GAIR50X Intake grille + extractable lter AIRJET 50/A - white frame and black inside X X X X
GAIR80X Intake grille + extractable lter AIRJET 80/A - white frame and black inside X X X X
PAIR50X Suction/supply plenum with AIRJET 50 control damper - rear connection X X X X
Internal suction and supply
grilles
Round tube distribution
(from the distribution box
to outlet)
PAIR80X Suction/supply plenum with AIRJET 80 control damper - rear connection X X X X
GINOX Suction/supply rectangular grill 350x130mm stainless X X X X
GIVEX Suction/supply rectangular grill 350x130mm white X X X X
FREX Filter for rectangular grilles 350x130mm (5 pcs.) X X X X
VIEX Ex traction/intake valve in ABS DN125 without air lter X X X X
FT125X Filter for DN125 valve (5 pcs.) X X X X
GQIEX Extraction/intake squared grill of DN125 joint with air lter X X X X
TFT90X DN90 round exible tube (Int. diam. 78mm) in a 20m. coil without insulation X X X X
IT90X Insulation in a 20m coil for DN90 round exible tube X X X X
CBT90X Connector to distribution box for DN90 round tube X X X X
GIUTX Connecting joint for DN90 round tube X X X X
CT90X Printed curve of 90-degree angle for DN90 round tube X X X X
A90DTX 90-degree adaptor, double DN90 round tube for DN125 valve + cap X X X X
TACT X Cap for DN90 round tube (5 pcs.) X X X X
ANFTX DN90 seal O-Ring (10 pcs.) X X X X
2
ELFOFresh
70-120 200-300 500-650
ELFOPack
Flat tube distribution
(from the distribution box
to outlet)
External distribution
(Ducts from the outside to
the unit and from the unit
to the distribution boxes)
TFPNX Flat exible tube 132x52mm in a 20m coil without insulation X X X X
IT100X Insulation in a 20m coil for at exible tube 132x52 X X X X
COBPX DN90 connector joint (CBT90X) --> at tube X X X X
GIUPX Seal and connec ting joint for at tube (10 pcs.) X X X X
CVP90X Vertical 90-degree curve for at tube X X X X
COP90X Horizontal 90-degree curve for at tube X X X X
CTP180X Joint for 180-degree at tube rotation X X X X
A90MPX 90-degree adaptor, single tube for DN125 valve X X X X
A90DPX 90-degree adaptor, double at tube for DN125 valve X X X X
ADMPX Straight adaptor, single at tube for DN125 valve X X X X
A90GPX 90-degree adaptor, single tube for at grill 350x130 mm X X X X
TACPX Cap for at tube (5 pcs.) X X X X
ANFPX Fixing ring for at tube (10 pcs.) X X X X
REPPX Flow controller for at tube X X X X
RTPTX Round/at tube connecting joint X X X X
BD8CX 8-output distribution box, DN150-200 joint X X X X
BD14CX 14-output distribution box, DN200 joint X X X
TFIS150X DN150 soundproong insulated exible tube in a 10mt. coil X X
TFIS200X DN200 soundproong insulated exible tube in a 10mt. coil X X
TFIS250X DN250 soundproong insulated exible tube in a 10m coil X
GR150X Exhaust / return square wall grille with circular coupling DN150 X
GR200X Exhaust / return square wall grig with circular coupling DN200 X X
GR250X Exhaust / return square wall grig with circular coupling DN250 X
GF150X F/F DN150 Joint X
GF200X F/F DN200 Joint X X
GF250X F/F DN250 Joint X
R2015X DN200-DN150 Reducer X
R2520X DN250-DN200 Reducer X
DY200X DN200-DN200-DN200 Y-branch X X
DY250X DN250-DN200-DN200 Y-branch
GPRX Grill for recirculation air return plenum 325x175 mm white X
Air recirculation
PRX Soundproofed plenum for air recirculation X
CPRX Manifold for air recirculation plenum DN 150 - 200 X
X = Accessories separately supplied
44 ELFOFresh² BT15B012GB-00
Page 45
1 - Internal suction and supply grilles
DAIR50X - AIRJET 50/I supply diuser - white frame and black inside
DAIR80X - AIRJET 80/I supply diuser - white frame and black inside
AIRJET 50/l and AIRJET 80/l are special input diusers specically developed to ensure a high standard of comfort
with air distribution and diusion.
The air blown into the environment through the AIRJET diuser, mixes with the whole mass of air in the room in
such a subtle way as to create a uniform temperature and air quality throughout the room.
This is the element that guarantees that the premises are ventilated adequately in compliance with the sound
level, air speed and temperature requirements.
The living area is the area with a height of 1.8 m in which the air velocity must not exceed 0.2 m/s, the speed
above which the human body perceives its motion and therefore a feeling of discomfort.
Winter operation simulation
The AIRJET diuser is positioned at a height of 2.5 metres.
The living area is the comfort zone with air velocity less than/equal to 0.2 m/s and
temperatures of 20-21°C.
The length of the launch L is determined, through the following images, based on the
airow and model (AIRJET 50/l or AIRJET 80/l)
From the front it looks like a linear diuser with slits. Some micro-nozzles are housed on the inside to allow proper airow to achieve considerable ranges
although with reduced ow rates.
It consists of an outer frame in extruded aluminium, which is painted white RAL 9010, a perforated metal sheet and black micro-nozzles.
The diuser is attached to the plenum (separately-supplied accessory) with a simple pressure.
Two sizes are available:
AIRJET 50/l: nominal airow rate of 50m3/h, with 2 adjustable micro-nozzles
AIRJET 80/l: nominal airow rate of 80m³/h, with 4 adjustable micro-nozzles
1 - AIRJET diuser
2 - Plenum
Accessory separately supplied
3 - CBT90X connector
Accessory separately supplied
BT15B012GB-00 ELFOFresh² 45
Page 46
Selection diagram
Key
Δp - Pressure drop [Pa]
NR - Sound level [dB]
Ak - actual Section [m²]
Vk - Eective air intake velocity [m/s]
Vt - Terminal velocity [m/s]
Vr - residual velocity in the occupied zone [m/s]
qV - Air ow rate [m³/h, m³/s]
L - Range, launch [m]
Height of the room: 2.7 m
Height of occupied area: 1.8 m
Flow rate measurement qV (m³/h, m3/s)
The ow rate qV is calculated by multiplying the eective intake velocity Vk (m/s), measured using a hot-wire anemometer or a pitot tube, by the actual
section Ak (m²) shown in the table at the side.
Ak - values (m²)
Size Ak
AIRJET 50/I 0,0062
AIRJET 80/I 0,00098
qv (m³/s) = vk x Ak
qv (m³/h) = vk x Ak x 3600
Pressure drop
Dp = pressure drop
Q = Air ow
46 ELFOFresh² BT15B012GB-00
Page 47
GAIR50X - Intake grille + extractable lter AIRJET 50/A - white frame and black inside
GAIR80X - Intake grille + extractable lter AIRJET 80/A - white frame and black inside
Suction grille consisting of an outer frame in extruded aluminium, which is painted white RAL 9010, and a perforated metal sheet painted black.
Easy to remove air lter, consisting of a metal frame containing the ltering section.
In needle-punched, resinated acrylic polyester fabric with high-eciency, and superlative against dusts and pollens (UNI-EN779, ltering level G3, class M1).
It can be regenerated by water-washing, blowing, vacuuming.
Two sizes are available:
Intake grille + extractable lter AIRJET 50/A
Intake grille + extractable lter AIRJET 80/A
1 - Intake grille + extractable lter AIRJET
2 - Plenum
Accessory separately supplied
3 - CBT90X connector
Accessory separately supplied
Pressure drop
Dp = pressure drop
Q = Air ow
BT15B012GB-00 ELFOFresh² 47
Page 48
PAIR50X - Suction/supply plenum with AIRJET 50 control damper - rear connection
PAIR80X - Suction/supply plenum with AIRJET 80 control damper - rear connection
The plenums are used to complete the supply diusers and for the extraction grilles.
The plenum is equipped with a control damper ensuring accurate airow adjustment.
The rear part is suitably congured for connection to various exible round or at pipes through the special CBT90X connector.
Two sizes are available:
Plenum with AIRJET 50 control damper
Plenum with AIRJET 80 control damper
1 - Supply diuser or Intake grille
Accessory separately supplied
2 - Plenum with damper
3 - CBT90X connector
Accessory separately supplied
4 - Calibration damper
GINOX - Suction/supply rectangular grill 350x130 stainless
GIVEX - Suction/supply rectangular grill 350x130 white
Grille for oor, wall or ceiling installation.
Floor installation is possible for a system of just mechanical ventilation (e.g. ELFOFresh2)
while it is inadvisable for the system with integration (e.g. ElfoPack) that would generate air
stratications and uneven temperature levels.
FREX - Filter for rectangular grilles 350x130mm (5 pcs.)
Simple at lter for rectangular grilles measuring 350x130 mm.
Provided in boxes of 5 pieces.
48 ELFOFresh² BT15B012GB-00
Page 49
VIEX - Extraction/intake valve DN125
Valve for wall or ceiling installation.
It is possible to adjust the airow through the central disc.
PP white plastic material.
It is coupled to the following adapters:
A90DTX: 90-degree adaptor, double DN90 round tube for DN125 valve + cap. Max air ow of 120
m³/h
A90MPX: 90-degree adaptor, single tube for DN125 valve. Max air ow of 50 m³/h
A90DPX: 90-degree adaptor, double at tube for DN125 valve. Max air ow of 100 m³/h
ADMPX: straight adaptor, single at tube for DN125 valve. Max air ow of 50 m³/h
Air supply Extrac tion of stale air
Dp = pressure drop
Q = Air ow
FT125X - Filter for DN125 valve (5 pcs.)
Conical lter to be housed inside the opening.
For installation, simply remove its internal plate and reposition it once it is inserted on the central internal threaded screw.
Provided in boxes of 5 pieces.
GQIEX - Extraction/intake squared grill of DN125 joint with air lter
Supply and/or return grille in steel for wall or ceiling installation supplied with a removable and washable metal
lter and control dampers.
It is coupled to the following adapters:
A90DTX: 90-degree adaptor, double DN90 round tube for DN125 valve + cap. Max air ow of 120 m³/h
A90MPX: 90-degree adaptor, single tube for DN125 valve. Max air ow of 50 m³/h
A90DPX: 90-degree adaptor, double at tube for DN125 valve. Max air ow of 100 m³/h
ADMPX: straight adaptor, single at tube for DN125 valve. Max air ow of 50 m³/h
A with lter
damper 50% open
B with lter
damper 100% open
C without lter
damper 100% open
Dp = pressure drop
Q = Air ow
BT15B012GB-00 ELFOFresh² 49
Page 50
2 - Flat tube distribution
TFT90X - DN90 round exible tube (Int. diam. 78mm) in a 20m coil without insulation
Polypropylene PE piping, corrugated double-layer on outside to ensure crush resistance in
installations under the screed.
Internally the pipe has a smooth surface ensuring reduced pressure drop.
The piping is antibacterial and antistatic ensuring hygiene, sterility and health safety.
Its extreme exibility allows an extremely easy installation thanks to a minimum radius of curvature
of 150 mm.
The piping connects to the distribution boxes and to the AIRJET diusers/return grilles through the
CBT90X connector.
Airtightness is guaranteed by the ANFTX O-ring supplied separately.
The exible tube, supplied in 20 m coils, can be cut with a simple cutting tool and can be connected
– without using any special equipment – to all the other components of the round tube system.
For correct installation, use the appropriate IT90X external insulating material supplied separately.
Note: we recommend a maximum airow rate of 60 m³/h (v = 3.48 m/s) in order not to have excessive air speed and consequent noise emission.
Dp = pressure drop
Q = Air ow
emission.
Provided in a coil of 20 m
IT90X - Insulation in a 20m coil for DN90 round exible tube
Flexible tube insulation allows a reduction of heat loss, prevents condensate build-up during summer operation and allows a
reduction in noise.
Provided in a coil of 20 m
For particular installations (example: burying in screed) contact the technical Oce..
CBT90X - Connector to distribution box for DN90 round tube
The connection between the round exible tube and the distribution box must be carried out using the appropriate joint.
The connector is secured to the box and tube by means of a quick-mount pressure tting system. To guarantee airtightness,
quick-t sealing rings must be used.
50 ELFOFresh² BT15B012GB-00
Page 51
GIUTX - Connecting joint for DN90 round tube
The connection between two sections of a round exible tube must be eected using the appropriate joint.
The connection is eected on both sides of the joint using 1 sealing ring mounted on the second rib of the tube, by means of
a quick-mount pressure tting system.
CT90X - Printed curve of 90-degree angle for DN90 round tube
Flexible round tubes can be bent with a minimum radius of curvature of 150 mm.
If the bend must have a smaller radius, 90° stamped elbows can be used.
The corrugated tube is joined to both ends of the elbow by means of a quick-mount pressure tting system.
Lastly, a sealing ring must be mounted on the second rib of the two tube sections.
Dp = pressure drop
Q = Air ow
A90DTX - 90-degree adaptor, double DN90 round tube for DN125 valve + cap
This allows you to connect the extraction and intake valves to the air distribution system with a round
tube. It is equipped with two air inlets for a maximum airow rate of 120m³/h. If the airow rate through
the valve is below 60m³/h, a single inlet is sucient; the other inlet will remain closed with the relevant
closing cap supplied with each adapter.
When cutting the cap you can shorten the cylindrical segment to the desired size with a cutting tool.
The segment has reference marks to facilitate this operation.
The valve adapter is supplied closed and ends with a round cap to be cut after the building work, so as to
prevent dust and dirt from entering the exible tubes.
Dp = pressure drop
Q = Air ow
No. 1 Cap included with the supply
BT15B012GB-00 ELFOFresh² 51
Page 52
TACTX - Cap for DN90 round tube (5 pcs.)
The cap can be applied to unused inlets/outlets of the distribution box and to 90° round tube adapters for valves with 2 inlets.
No sealing ring is required for mounting the cap.
Provided in boxes of 5 pieces.
ANFTX - DN90 seal O-Ring (10 pcs.)
To guarantee the airtightness of any other component of the system, quick-t sealing rings must be used.
This component, therefore, must always be used to connect the round exible tube to the joints, valve adapters, grilles and elbows.
Provided in boxes of 10 pieces.
52 ELFOFresh² BT15B012GB-00
Page 53
3 - Flat tube distribution
TFPNX - Flat exible tube 132x52mm in a 20m coil without insulation
Polypropylene PE piping, corrugated double-layer on outside to ensure crush resistance in
installations under the screed.
Internally the pipe has a smooth surface ensuring reduced pressure drop.
The piping is antibacterial and antistatic ensuring hygiene, sterility and health safety.
Its at shape and reduced height make installation extremely easy and it saves space in the
underoor screed. The exible pipe allows a minimum horizontal curvature radius of 300 mm.
The piping connects to the distribution boxes and AIRJET diusers/return grilles through the
COBPX connector.
Airtightness is guaranteed by the GIUPX connection joint supplied separately.
The exible tube, supplied in 20 m coils, can be cut with a simple cutting tool and can be connected
– without using any special equipment – to all the other components of the round tube system.
For correct installation, use the appropriate IT100X external insulating material supplied separately.
Internal section 0.0041 m².
Note: we recommend a maximum airow rate of 50 m³/h (v = 3.38 m/s) in order not to have excessive air speed and consequent noise emission.
Dp = pressure drop
Q = Air ow
Provided in a coil of 20 m
IT100X - Insulation in a 20m coil for at exible tube 132x52
Flexible tube insulation allows a reduction of heat loss, prevents condensate build-up during summer operation and allows a
reduction in noise.
Provided in a coil of 20 m
For particular installations (example: burying in screed) contact the technical Oce.
BT15B012GB-00 ELFOFresh² 53
Page 54
COBPX - DN90 connector joint (CBT90X) --> at tube
The connection between the at exible tube and the distribution box must be carried out using
the appropriate joint.
The connector is secured to the box by means of a quick-mount pressure tting system and a
sealing ring positioned on the central groove, while the tube is coupled to the connector using an
appropriate joint for at exible tubes with double sealing ring.
Dp = pressure drop
Q = Air ow
CVP90X - Vertical 90-degree curve for at tube
*** Joint included for at exible tube with double sealing ring.
If the bend must have a smaller radius, 90° stamped vertical elbows can be used.
The exible tube can be attached exclusively using an appropriate joint for at exible tubes with
double sealing ring.
Dp = pressure drop
Q = Air ow
GIUPX - Seal and connecting joint for at tube (10 pcs.)
The connection between two sections of a at exible tube must be eected using the appropriate joint.
The connection is carried out on both sides using 2 sealing rings supplied already mounted in the joint..
*** Joint included for at exible tube with double sealing ring.
Provided in boxes of 10 pieces.
54 ELFOFresh² BT15B012GB-00
Page 55
COP90X - Horizontal 90-degree curve for at tube
Flexible at tubes can be bent horizontally with a minimum radius of curvature of 300mm.
If the bend must have a smaller radius, 90° stamped horizontal elbows can be used.
*** Joint included for at exible tube with
double sealing ring.
Dp = pressure drop
Q = Air ow
CTP180X - Joint for rotating the at tube through 180°
Thanks to this special joint, at exible tubes can be rotated through 180° on the horizontal axis.
The exible pipe connection with rotational joint takes place exclusively through the use of a special joint for at exible
tubes with double seal ring.
A90MPX - 90-degree adaptor, single tube for DN125 valve
Allows for connecting the air intake and extraction valves to the air distribution system with a at
tube.
It is equipped with one air inlet guaranteeing a maximum airow rate of 50m³/h.
If required, the cylindrical body can be shortened with a cutting tool. The body has a series of
reference marks to make it easier to cut.
The valve adapter is supplied closed and ends with a round cap to be cut, which – during installation
of the distribution system – can function as a closing cap if turned through 180°, so as to prevent
dust and dirt from entering the exible tubes.
Dp = pressure drop
Q = Air ow
BT15B012GB-00 ELFOFresh² 55
Page 56
A90DPX - 90-degree adaptor, double at tube for DN125 valve
Allows for connecting the air intake and extraction valves to the air distribution system with a at
tube.
It is equipped with two air intakes guaranteeing a maximum airow rate of 100m³/h.
If required, the cylindrical body can be shortened with a cutting tool. The body has a series of
reference marks to make it easier to cut.
The valve adapter is supplied with a round cap, which – during installation of the distribution
system – can be used to prevent dust and dirt from entering the exible tubes.
Dp = pressure drop
Q = Air ow
ADMPX - Straight at single-tube adapter for DN125 valve
Allows for connecting the air intake and extraction valves to the air distribution system with a at
tube.
It is equipped with one air inlet guaranteeing a maximum airow rate of 50m³/h.
If required, the cylindrical body can be shortened with a cutting tool. The body has a series of
reference marks to make it easier to cut.
The valve adapter is supplied closed and ends with a round cap to be cut after the building work, so
as to prevent dust and dirt from entering the exible tubes.
In cases with round tube air distribution it is necessary to provide an RTPTX joint for round tube/
at pipe connection.
*** Joint included for at exible tube with double sealing ring.
*** Joint included for at exible tube with double sealing ring.
Dp = pressure drop
Q = Air ow
56 ELFOFresh² BT15B012GB-00
Page 57
A90GPX - 90-degree adaptor, single tube for at grill 350x130 mm
It is used to connect the at grilles to the air distribution system; you can shorten the height with
a cutting tool.
Can be quickly installed thanks to incorporated mounting lugs on the wall as well as on the oor.
A connection and sealing joint for at tubes (GIUPX) allows easy connection of the at tube to the
adapter.
In cases with round tube air distribution it is necessary to provide an RTPTX joint for round tube/
at pipe connection.
Dp = pressure drop
Q = Air ow
TACPX - Cap for at tube (5 pcs.)
The cap can be applied to unused inlets/outlets of the distribution box and to 90° round tube adapters for valves
with 2 inlets.
No sealing ring is required for mounting the cap.
Provided in boxes of 5 pieces.
ANFPX - Fixing ring for at tube (10 pcs.)
The at exible tube can be secured to the wall using an appropriate xing ring, which – on its own – is able
to anchor the tube vertically, horizontally or onto the ceiling, and secure the connections to the exible duct.
Provided in boxes of 10 pieces.
BT15B012GB-00 ELFOFresh² 57
Page 58
REPPX - Flow controller for at tube
To adjust the amount of air conveyed to an intake/exhaust valve or grille, a ow regulator
(diaphragm with closed sections) must be installed.
The ow regulator has 8 sections (1, 2, 3, 4, 4a, 3a, 2a, 1a). Depending on the required need, one
or more sections can be added to adjust the airow.
Dp = pressure drop
Q = Air ow
A
B
C
D
E
1 opening
1 or 1a
1 opening
4 or 4a
2 openings
1 and 1a
2 openings
2 and 2a
2 openings
3 and 3a
4 openings
F
1, 2 and 1a, 2a
4 openings
G
3, 4 and 3a, 4a
6 openings
H
1, 2, 3 and 1a, 2a, 3a
6 openings
I
2, 3, 4 and 2a, 3a, 4a
L all open
RTPTX - Round/at tube connecting joint
The connection between two sections of a at exible tube must be eected using the appropriate
joint.
The connection is eected on both sides of the joint using 1 sealing ring mounted on the second
rib of the tube, by means of a quick-mount pressure tting system.
Dp = pressure drop
Q = Air ow
58 ELFOFresh² BT15B012GB-00
Page 59
4 - External distribution
BD8CX - 8-output distribution box, DN150-200 joint
BD14CX - 14-output distribution box, DN200 joint
Distribution box that can be used for supply and return.
During installation, thanks to pre-shearing only the necessary holes are used for connecting the exible tubes.
The connection between the box and round tube DN90 is performed by the CBT90X accessory.
The at tube 132x52 is connected using the CBT90X and COBPX accessories.
The box is provided with a removable plate for inspection and cleaning.
Internally, the box is lined with sound-proong material ensuring improved air ow noise levels.
The distribution box is provided with 4 angular brackets for installation.
The box can be installed horizontally or vertically.
8 connections
Number of ducts
1 60 15
2 120 15
3 180 15
4 240 15
5 320 15
6 360 15
7 420 15
8 480 15
Max. air ow
[m³/h]
Pressure drop
[Pa]
A. inspection
B. CBT90X (supplied separately)
14 connections
C. pre-cut connections
Number of ducts
1 60 15
2 120 15
3 180 15
4 240 15
5 320 15
6 360 15
7 420 15
8 480 15
9 540 15
10 600 15
11 660 15
12 720 15
13 780 15
14 840 15
Max. air ow
[m³/h]
Pressure drop
[Pa]
A. inspection
B. CBT90X (supplied separately)
BT15B012GB-00 ELFOFresh² 59
C. pre-cut connections
D. DN200 air tting
Page 60
TFIS150X - DN150 soundproong insulated exible tube in a 10m coil
TFIS200X - DN200 soundproong insulated exible tube in a 10m coil
TFIS250X - DN250 soundproong insulated exible tube in a 10m coil
For connecting the unit to the air distribution boxes and to the return/exhaust grilles, an insulated exible pipe
is used as it aords extensive installation exibility and eective sound damping and reduction in heat loss.
The exibility guaranteed by the reduced-pitch spiral allows for creating 180° curves without crushing and
therefore ensures reduced pressure drops.
There are three available diameters: DN150, DN200 and DN250.
Technical specications of the tube used:
piping consisting of layers of aluminium foil reinforced with a polyester lm and spiral in spring steel
•
lining with breglass matting with 25 mm thickness and density of 16 kg/m3.
•
external lining (vapour barrier) in layers of reinforced aluminium
•
operating temperature = -30°C to +140° C
•
maximum working pressure = 2500 Pa
•
maximum speed = 30 m/s
•
reaction to re = class 1
•
colour = natural aluminium
•
Provided in a coil of 10 m
Dp = pressure drop
Q = Air ow
60 ELFOFresh² BT15B012GB-00
Page 61
GR150 - Wall-mounted square exhaust/return grille with circular DN150 connection
GR200 - Wall-mounted square exhaust/return grille with circular DN200 connection
GR250 - Wall-mounted square exhaust/return grille with circular DN250 connection
The outdoor air return and exhaust can be carried out on the wall by reaching this exhaust/intake grille with the
pipe.
There are two available grids:
DN150 for ELFOFresh2 70-120 sizes
•
DN200 for ELFOFresh2 200-300 sizes and ElfoPack 5 size
•
DN250 for ELFOFresh2 500-650 sizes
•
The grille is square and tted with small openings to install it on outdoor walls and can be used both for supply
and return purposes.
It is tted with a circular connection at the back tted with a sealing gasket and a wire mesh bird screen
Grille size A B C Weight
Diameter [Ø] [mm] [mm] [mm] [kg]
150 226 206 40 1.4
200 310 276 40 1.5
250 370 336 40 1.9
Air inlet Discharged air
BT15B012GB-00 ELFOFresh² 61
Page 62
Dp = pressure drop
Q = Air ow
GF150X - F/F DN150 Joint
GF200X - F/F DN200 Joint
GF250X - F/F DN250 Joint
Joint to use to connect to the unit the pieces of DN200 and DN250 insulated exible piping and components
such as humidier and heaters.
F L Weight
Diameter [Ø] [mm] [kg]
150 95 0.18
200 95 0.25
250 140 0.42
R2015X - DN200-DN150 reducer
R2520X - DN250-DN200 Reducer
There are some cases where it is necessary to switch from a DN250 diameter to a DN200 diameter, or from a
DN200 diameter to a DN150 diameter.
For example, the preheating, electric heaters kit has a DN 200 diameter and so, in order to connect it to the
ELFOFresh2 500-650, it needs this reduction plus the F/F 200 joint.
The female-male reduction is made of stamped galvanised sheet steel, with 45° bend, and is used for compact
installations with reduced pressure drops and low noise level.
F M L Weight
Diameter [Ø] Diametro [Ø] [mm] [kg]
200 150 75 0.34
250 200 94 0.54
62 ELFOFresh² BT15B012GB-00
Page 63
DY200X - DN200-DN200-DN200 Y-joint
DY250X - DN250-DN200-DN200 Y-joint
For the 500 and 650 ELFOFresh2 units, two air distribution boxes are used for intake air and two boxes for
extraction, so it is necessary to split the DN250 exible pipe coming from the ELFOFresh2 into two DN200 pipes.
The DN250-DN200-DN200 Y-branch with 45° angle allows this splitting.
If, however, you need to bring air into distant rooms you can have more distribution boxes also with the 200-300
size ELFOFresh2 systems and in this case it is necessary to use the DN200-DN200-DN200 Y-branch.
The branch is made of galvanized metal sheet and the connections are male and equipped with seal gaskets.
A B B L Weight
Diameter [Ø] Diameter [Ø] Diameter [Ø] [mm] [kg]
200 200 200 230 2.1
250 200 200 280 3.5
BT15B012GB-00 ELFOFresh² 63
Page 64
5 - Air recirculation
GPRX - Grill for recirculation air return plenum 325x175 mm white
Return grille in aluminium, which is painted white RAL 9001, with useful surface of 0.0292 m² for connection
to a PRX soundproof plenum.
Dp = pressure drop
Q = Air ow
Soundproofed plenum for air recirculation for DN90 tube x 5 ttings
Recirculation plenum in zinc-magnesium sheet metal with internal sound-proof lining for
installation in false ceilings or for wall-mounting.
The plenum allows the housing of the GPRX return grille.
The plenum can be connected to the manifold for the CPRX recirculation plenum if the recirculation
duct has a DN150 or DN200 mm internal diameter.
If the space available is modest, the recirculation Plenum can be connected to up to 5 TFT90X
round exible tubes through the relevant CBT90X Connector or to TFPNX at tubes through the
CBT90X Connector and COBPX Joint.
The number of exible ducts is dependent on the recirculation air ow rate.
Dp = pressure drop
Q = Air ow
64 ELFOFresh² BT15B012GB-00
Page 65
CPRX - Manifold for DN150-200 air recirculation plenum
Zinc-magnesium sheet metal manifold with internal sound-proof lining insulation required for
the connection between the PRX soundproof recirculation Plenum and the DN150 or DN200
exible duct.
Dp = pressure drop
Q = Air ow
BT15B012GB-00 ELFOFresh² 65
Page 66
Dimensional drawings
Sizes 70-120
**Minimum dimension for Maintenance.
A(15): only for ceiling installation
(1) Removable panel for lower access to the exhaust air lter
(2) Removable panel for lower access to the electrical panel
(3) Removable panel for lower access to the treatment air lter
(4) Removable panel for lower access to the fresh air lter
(5) Removable panel for lateral access to the elctrical panel
(6) Drain stub
(7) Removable panel for access to customer terminal block
(8) Fixing points
(AE) fresh air inlet
(ES) Exhaust air
(M)Ambient air supply
(R) Ambient air return
Size 70 120
Length mm 800 800
Depth mm 690 690
Height mm 266 266
Operating weight kg 37 43
Shipping weight kg 40 40
66 ELFOFresh² BT15B012GB-00
Page 67
Sizes 200-300
1. removable panel for access to the components of handling section
2. removable panel for access to the components of the recovery section
3. removable panel for lower access to the air lter
4. Remote electric control board (2m cable)
5. hole to hang unit
6. Electric line input
Sizes 200 300
Length
Depth
Height
Operating weight
Shipping weight
mm
mm
mm
kg
kg
922 922
704 704
360 360
70 75
85 90
**Minimum:
A. ceiling installation, lter access from below, electrical panel that
can be controlled remotely at a distance of at least 200
B. ceiling installation, lter access from below, electrical panel that
cannot be controlled remotely, minimum distance of 700
C. oor installation, lateral lter access, electrical panel that can be
controlled remotely at a distance of at least 400
D. oor installation, lateral lter access, electrical panel that cannot
be controlled remotely, minimum distance 700
**Minimum dimension for Maintenance.
A(20): only for ceiling installation
7. condensate drain pipe outlet
8. removable panel for lateral access to the air lter
(AE) fresh air inlet
(ES) Exhaust air
(M)Ambient air supply
(R) Ambient air return
BT15B012GB-00 ELFOFresh² 67
Page 68
Sizes 500-650
1. removable panel for access to the components of handling section
2. removable panel for access to the components of the recovery section
3. removable panel for lower access to the air lter
4. Remote electric control board (2m cable)
5. hole to hang unit
6. Electric line input
Sizes 500 650
Length mm 1158 1158
Depth mm 751 751
Height mm 423 423
Operating weight kg 95 100
Shipping weight kg 115 120
**Minimum:
A. ceiling installation, lter access from below, electrical
panel that can be controlled remotely at a distance of at
least 200
B. ceiling installation, lter access from below, electrical
panel that cannot be controlled remotely, minimum
distance of 700
C. oor installation, lateral lter access, electrical panel that
can be controlled remotely at a distance of at least 400
D. oor installation, lateral lter access, electrical panel that
cannot be controlled remotely, minimum distance 700
Minimum dimension for Maintenance.
A(20): only for ceiling installation
7. condensate drain pipe outlet
8. removable panel for lateral access to the air lter
(AE) fresh air inlet
(ES) Exhaust air
(M)Ambient air supply
(R) Ambient air return
68 ELFOFresh² BT15B012GB-00
Page 69
Description per specication of supply
ELFOFresh
2
Sizes 70-120
Unit for the renewal and purication of air with thermodynamic active recovery for indoor installation. Complete with high-eciency refrigeration circuit,
that can be reversed into a heat pump with rotary airtight compressor with R134A refrigerant, low-consumption supply and extraction fans with electronic
control, built-in, cabled controls with re-positionable electrical panel complete with electronic control and all protection and safety devices.
Load-bearing structure with a RAL9001 pre-painted frame in sheet metal for sizes 70-120 and “Aluzink” sheet metal for sizes 200-650. The fan area is
completely lined with anti-condensation and soundproong material.
Refrigeration circuit with airtight rotary compressor mounted on anti-vibration rubber grommets and complete with oil charge and suction lter, refrigerant
charge, high pressure safety pressure switch, suction pressure transducer, 4-way cycle inversion valve, lamination capillary and liquid receiver.
Direct expansion, nned coil exchangers for pretreatment of outdoor air and energy recovery from exhaust air, made from copper tubes arranged in
staggered rows and mechanically expanded for improved adherence to the collar of the ns.
The ns are made from aluminium with a special corrugated surface, set a suitable distance apart to ensure maximum heat exchange eciency. The surface
of the coils has been subjected to an hydrophilic treatment to make it easier to discharge condensation and reduce frost.
Thermoformed ABS condensate collection tray tted with drain pipe.
Supply and exhaust brushless centrifugal electric fan at high energy eciency with double intake directly coupled to the electric motor with plastic scroll
diam 146 mm and metal pallets.
Pleated lter, made up of a galvanized plate frame with galvanized and electric-welded protective mesh and 100% regenerable polyester ltering media
with PVC resin. G3 eciency according to CEN-EN 779 standard (Eurovent class EU3 - average eciency 84% ASHRAE 52 - 76 Atm). Self-extinguishing
(resistance to re class 1 - DIN 53438).
Flat lter used for the return of fresh air and ambient air, consisting of a galvanized sheet metal frame with galvanized electrowelded protective meshes and
100% polyester renewable ltering septum with G2 eciency level in accordance with the CEN-EN 779.
Electrical panel located inside the unit and can be easily accessed from the bottom or sides via the removable panels.
The control section consists of a Board with microprocessor control system that manages the control of the unit based on the outdoor and indoor air
conditions and includes: outdoor air temperature probe, temperature and humidity probe for room supply air, return ambient air temperature probe and
potential-free contacts for remote ON/OFF, summer/winter mode, silent mode and ventilation only.
Thermodynamic recovery function active in summer and winter; Dehumidify is perfect in summer for matching with the radiant cooling FREECOOLING.
HID-P1 room thermostat with ambient temperature and humidity probe connected to the unit via a shielded twisted pair at a maximum distance of 15 m
with the following functions: setting the desired room temperature and humidity, ON/OFF, summer/winter mode setting, fan-only mode setting, diagnostic
management with code specic to the type of error.
Based on the unit’s conguration:
Setup to ELFOSystem with RS485 Modbus PRELF
Plug-in electronic board for connection to ELFOSystem using Modbus RS485 serial port
Electronic lter FES
High-eciency electrostatic lter for the ltration of the renewal air to eliminate fumes, particulates, bacteria and viruses.
Filtration level equivalent to class H10.
Heating elements in duct EHPCX
Modulating electric heaters kit in the duct for preheating the renewal air coming from the outside with temperatures below -5°C.
ELFOFresh2 70 TECHNICAL DATA
R134A refrigerant
-
Heating capacity under nominal conditions (A7/A20) 0,517 kW, eciency factor COP=3,38
-
Cooling capacity under nominal conditions (A35/A27) 0,446 kW,eciency factor EER=2,24
-
Nominal air ow 70 m3/h, Voltage 230/1/50
-
CPAN-U 70 Clivet model
-
ELFOFresh2 120 TECHNICAL DATA
R134A refrigerant
-
Heating capacity under nominal conditions (A7/A20) 0,984 kW, eciency factor COP=3,9
-
Cooling capacity under nominal conditions (A35/A27) 0,846 kW,eciency factor EER=2,54
-
Nominal air ow 120 m3/h, Voltage 230/1/50
-
CPAN-U 120 Clivet model
-
BT15B012GB-00 ELFOFresh² 69
Page 70
Sizes 200-650
Unit for the renewal and purication of air with thermodynamic active recovery for indoor installation. Complete with high-eciency refrigeration circuit,
that can be reversed into a heat pump with rotary airtight compressor with R134A refrigerant, low-consumption supply and extraction fans with electronic
control, built-in, cabled controls with re-positionable electrical panel complete with electronic control and all protection and safety devices.
Structure made entirely from “aluzink” plate that guarantees excellent mechanical characteristics and high corrosion strength over time. The ventilating
section is completely lined with anti-condensate and soundproong material.
Refrigeration circuit with airtight rotary compressor mounted on anti-vibration rubber grommets and complete with oil charge and suction lter, refrigerant
charge, high pressure safety pressure switch, suction pressure transducer, 4-way cycle inversion valve, lamination capillary and liquid receiver.
Direct expansion, nned coil exchangers for pretreatment of outdoor air and energy recovery from exhaust air, made from copper tubes arranged in
staggered rows and mechanically expanded for improved adherence to the collar of the ns.
The ns are made from aluminium with a special corrugated surface, set a suitable distance apart to ensure maximum heat exchange eciency.
Condense collection tray made of 1050 H24 aluminium alloy with anti-condensation insulation, welded and equipped with siphon drain tube.
Centrifugal supply and exhaust fans with high energy eciency and double intake, brushless electric motor directly coupled to the fan with plastic auger
and impeller with diameter of 146 mm, maximum available pressure of 120 Pa that can be calibrated for operation based on the eective pressure drops
in the system.
Pleated lter, made up of a galvanized plate frame with galvanized and electric-welded protective mesh and 100% regenerable polyester ltering media
with PVC resin. G3 eciency according to CEN-EN 779 standard (Eurovent class EU3 - average eciency 84% ASHRAE 52 - 76 Atm). Self-extinguishing
(resistance to re class 1 - DIN 53438). Metal mesh pre-lter with G1 eciency.
The electrical panel assembled outside the unit is connected to it by a fast- connect cable (2 mt) that allows its remotization in positions where the
maintenance/control of the parameters is easier. The power section includes: - fuses compressor and fans, fans control contactors and compressor control
contactor.
The control section consists of a Board with microprocessor control system that manages the control of the unit based on the outdoor and indoor air
conditions and includes: outdoor air temperature probe, temperature and humidity probe for room supply air, return ambient air temperature probe and
potential-free contacts for remote ON/OFF, summer/winter mode, silent mode and ventilation only.
Thermodynamic recovery function active in summer and winter; Dehumidify is perfect in summer for matching with the radiant cooling FREECOOLING.
HID-P1 room thermostat with ambient temperature and humidity probe connected to the unit via a shielded twisted pair at a maximum distance of 15 m
with the following functions: setting the desired room temperature and humidity, ON/OFF, summer/winter mode setting, fan-only mode setting, diagnostic
management with code specic to the type of error.
Based on the unit’s conguration:
Setup to ELFOSystem with RS485 Modbus PRELF
Plug-in electronic board for connection to ELFOSystem using Modbus RS485 serial port
Electronic lter FES
High-eciency electrostatic lter for the ltration of the renewal air to eliminate fumes, particulates, bacteria and viruses.
Heating elements in duct EHPCX
Modulating electric heaters kit in the duct for preheating the renewal air coming from the outside with temperatures below -5°C.
Immersed electrode humidier HSE3LX/HSE3MX
Immersed electrode humidier for humidication of renewal air in heating operation, equipped with power supply and independent loading and draining.
ELFOFresh² 200 TECHNICAL DATA
R410A refrigerant
-
Heating capacity under nominal conditions (A7/A20) 1,81 kW, eciency factor COP=4,1
-
Cooling capacity under nominal conditions (A35/A27) 1,63 kW,eciency factor EER=2,87
-
Nominal air ow 200 m³/h, Voltage 230/1/50
-
CPAN-U 200 Clivet model
-
ELFOFresh² 300 TECHNICAL DATA
R410A refrigerant
-
Heating capacity under nominal conditions (A7/A20) 2,33 kW, eciency factor COP=3,93
-
Cooling capacity under nominal conditions (A35/A27) 2,17 kW,eciency factor EER=2,96
-
Nominal air ow 300 m³/h, Voltage 230/1/50
-
CPAN-U 300 Clivet model
-
ELFOFresh² 500 TECHNICAL DATA
R410A refrigerant
-
Heating capacity under nominal conditions (A7/A20) 3,58 kW, eciency factor COP=4,27
-
Cooling capacity under nominal conditions (A35/A27) 3,13 kW,eciency factor EER=2,86
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Nominal air ow 500 m³/h, Voltage 230/1/50
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CPAN-U 500 Clivet model
-
ELFOFresh² 650 TECHNICAL DATA
R410A refrigerant
-
Heating capacity under nominal conditions (A7/A20) 5 kW, eciency factor COP=3,94
-
Cooling capacity under nominal conditions (A35/A27) 4,23 kW,eciency factor EER=2,78
-
Nominal air ow 650 m³/h, Voltage 230/1/50
-
CPAN-U 650 Clivet model
-
COP and EER are calculated according to the standard EN14511:2008
70 ELFOFresh² BT15B012GB-00
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