Immergas RAPAX 100 V2 Operating instructions

RAPAX 100 V2
IE
Instruction and
recommendation booklet
*1.041494ENG*

e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its technical and commercial
documents without forewarning.
Dear Customer,
Our compliments for having chosen a top-quality Immergas product, able to ensure well-being and safety for a long period of time. As an Immergas Customer,
you can also count on a qualied aer-sales service, prepared and updated to guarantee constant eciency of your boiler. Read the following pages carefully:
you will be able to draw useful tips on the correct use of the device, compliance of which will conrm your satisfaction with the Immergas product.
For assistance and routine maintenance, contact Authorised Service Centres: they have original spare parts and are specically trained directly by the manufacturer.
General recommendations
All Immergas products are protected with suitable transport packaging.
e material must be stored in a dry place protected from the weather.
e instruction booklet is an integral and essential part of the product and must be given to the new user in the case of transfer or succession of ownership.
It must be stored with care and consulted carefully, as all of the warnings provide important safety indications for installation, use and maintenance stages.
is instruction booklet provides technical information for installing Immergas boilers. As for the other issues related to boiler installation (e.g. safety in the
workplace, environmental protection, accident prevention), it is necessary to comply with the provisions specied in the regulations in force and with the
principles of good practice.
In compliance with the legislation in force, the systems must be designed by qualied professionals, within the dimensional limits established by the Law.
Installation and maintenance must be performed in compliance with the regulations in force, according to the manufacturer's instructions and by an authorised
company, which has the specic technical skills in the system sector, as provided for by Law.
Improper installation or assembly of the Immergas device and/or components, accessories, kits and devices can cause unexpected problems for people, animals
and objects. Read the instructions provided with the product carefully to ensure proper installation.
Maintenance must be carried out by an authorised company. e Authorised Service Centre represents a guarantee of qualication and professionalism.
e device must only be destined for the use for which it has been expressly declared. Any other use will be considered improper and therefore potentially dangerous.
If errors occur during installation, operation and maintenance, due to non-compliance with technical laws in force, standards or instructions contained in
this booklet (or however supplied by the manufacturer), the manufacturer is excluded from any contractual and extra-contractual liability for any damages
and the device warranty is invalidated.

5 Recommendations - maintenance and
repairs.................................................................17
5.1 Advice for the user............................................17
5.2 Household maintenance. .................................17
5.3 Maintenance by approved professionals........17
5.4 Troubleshooting support. ................................18
5.5 Work on the water heater.................................19
5.6 Quick fault diagnosis for use carried out by a
professional technician.....................................20
5.7 Aer-sales service. ............................................20
5.8 Scope of application of the warranty..............20
5.9 Declaration of conformity................................20
6 Product che (in compliance with Regulation
812/2013). ..........................................................21
7 Parameters for lling in the package che.....22
4 Parameter settings / Use...................................15
4.1 remote panel......................................................15
4.2 Description of the symbols..............................15
4.3 Main menu.........................................................15
4.4 System settings. .................................................16
4.5 Parameters to be adjusted upon installation. 16
4.6 Selecting the operating mode..........................16
4.7 Display the information...................................16
1 Important recommendations............................5
1.1 Warnings.............................................................. 5
1.2 installation. ..........................................................5
1.3 Hydraulic connection.........................................5
1.4 Wiring. .................................................................5
2 Introducing the product. ...................................6
2.1 Important advice................................................. 6
2.2 Technical specications...................................... 6
2.3 Dimensions and components............................7
3 Installation. .......................................................... 9
3.1 Choosing the place of installation.................... 9
3.2 Product installation. .........................................11
3.3 Hydraulic connection.......................................12
3.4 Air intake connection.......................................12
3.5 Electrical connection........................................12
3.6 Water heater wiring diagram...........................14
3.7 Commissioning.................................................14
INDEX

5
connected, to prevent any risk of injury
due to electric shocks.
e following must be provided up-
stream of the electrical system:
- A circuit breaker or 16A multi-pole
fuse with contacts compliant with
regulations in force.
- A 30 mA dierential circuit breaker.
Should the power cable be found to
be damaged for any reason, it must be
replaced by the Aer-sales Support,
and/or in any case by skilled and qual-
ied sta.
e water heater must be connected to
earth according to the methods set out
by the regulations in force.
A special terminal, suitably marked
is provided for the specic purpose.
is manual is supplied jointly with the
water heater; in the event of loss it may
also be obtained from the Authorised
area Support service or be downloaded
from the suitable website.
Caution: failure to comply with rec-
ommended installation procedures,
especially a room volume below the 20
m3minimum, may signicantly reduce
system performance.
- It is recommended to provide suita-
ble shut-o valves on the hydraulic
connection to allow for any routine
and extraordinary maintenance oper-
ations which might require emptying/
lling the water heater.
- In order to prevent any stability and
safety issues, it is obligatory to secure
the water heater on the wall using the
fastening anchors supplied.
1.3 HYDRAULIC CONNECTION.
It is mandatory to install a safety device,
set to be triggered at 0.7 MPa (7 bars)
(not supplied with the water heater),
sized 3/4”, compliant with standard
EN1487 as amended and added, and
in any case compliant with local regu-
lations in force, to be tted to the cold
water inlet of the water heater.
e safety device must be protected
from ice.
e safety unit must be tted with a
discharge device (overpressure) to
be operated regularly to remove any
limestone deposits.
It must also be checked regularly to
ensure it is not blocked.
e pressure reducer (not supplied as
standard) is required when the water
mains pressure exceeds 0.5 MPa (5
bars) and must be mounted on the
main water supply line.
e safety unit must also be connected
to an open drain pipe, in a frost-free
environment, with a permanent down-
ward gradient, to remove any expan-
sion water from the heating process, or
drainage water from the water heater.
To perform any discharge operations
of the water heater, strictly adhere to
the following sequence:
- Disconnect the device from the elec-
trical supply voltage.
- Disconnect the device from the mains
water supply (cold water).
- Open the hot water tap.
- Actuate the discharge device of the
safety unit.
1.4 WIRING.
Before removing the cover of the water
heater, always ensure the power is dis-
1IMPORTANT RECOMMENDATIONS.
1.1 WARNINGS.
is device may only be used by adult
users whose physical, sensory or men-
tal abilities are not impaired.
Before using this device, this instruc-
tion booklet (User section) and/or the
operating instructions should be ready
by skilled technical sta.
Use by incompetent adult staff and
especially by children is forbidden
for safety reasons and due to issues of
correct device operation and warranty.
is device has been designed to serve
one residential housing unit only (and
similar) subject to assessment of the
energy requirement for domestic hot
water; it is not a heating system pursu-
ant to the legislation in force.
1.2 INSTALLATION.
Warning: due to its weight (57 kg), this
device must be handled with care to
avoid injury to persons or damage to
property and to the product itself. In-
stallation must therefore be performed
taking into account the following
instructions:
- Install the device in a frost-free room.
The warranty does not cover any
device breakdown caused by exces-
sive pressure due to the safety valve
blocking because of ice.
- Ensure the wall on which the device
is to be installed is suitable to with-
stand the device's own weight and
that of the water content (100 litres
approximately). It is recommended
to perform a structural assessment
by the designer of the dwelling.
- If the storage tank is mounted on a
false ceiling, under the roof or above a
living area, it is mandatory to install a
drip tray to be connected to the drain.
- Suitably aerate the installation room
in the event the device is to be in-
stalled in a room and/or in a position
where the ambient temperature is
always higher than 35°C.
- is device is intended for use up to
a maximum height of 2000 m.
- Position the device in an accessible
area and at such a distance from the
wall to permit correct maintenance /
accessibility (Paragraph 3.1).
- Refer to the installation diagrams
(Paragraph 3.1).

6
2-1
Safety directives. The installation work and
commissioning of thermodynamic water heaters
can be hazardous due to high pressure and live
electrical parts.
ermodynamic water heaters must be installed,
commissioned and serviced by trained and
qualied sta only.
Dimensions
Empty weight
Tank capacity
Hot + cold water tting
Anti-corrosion protection
Maximum operating pressure
mm
kg
l
bar
H 1234 x L 522 x D 538
57
100
3/4’’ M
Magnesium anode
8
Electrical connection (voltage/frequency)
Max total power absorbed by the device
Max power absorbed by heat pump
Power absorbed by auxiliary electrical unit
W
W
W
230 V single-phase 50 Hz
1550
350
1200
Setting range of the water temperature of the heat pump
Temperature range for using the heat pump (air temperature)
°C
°C
from 50 to 62 (temperature factory setting 52°C)
from -5 to +43
Diameter of intake and exhaust ducts
Air ow rate without ducts
Load losses acceptable on ventilation circuit, without aecting performance
mm
m3/h
Pa
125
160
25
R134a refrigerant charge
Coolant
Coolant mass
Coolant volume
Amount of hot water at 40°: V40td in 8h (HC) / 14h (HC+6h)
kg
kg/l
Ton CO2 Eq.
l
0.6
R134a
0.006
0.86
151 / 289
Coecient of performance (COP)
Power absorbed at steady speed (Pes)
Heating time(th)
Reference temperature(Tref)
Air ow rate
-
W
h.min
°C
m3/h
2.47 - M
20
7 h 27
52.8
162.7
Coecient of performance (COP)
Power absorbed at steady speed (Pes)
Heating time(th)
Reference temperature(Tref)
-
W
h.min
°C
2.75 - M
18
6 h 25
52.5
2.2 TECHNICAL SPECIFICATIONS.
e product warranty is rendered null and void
if the above instructions are not complied with.
e manufacturer declines any liability for any
faults to the product resulting from transport or
handling not complying with the above recom-
mendations.
Under no circumstances may this product be
stacked (Fig. 2-1).
2INTRODUCING THE PRODUCT.
2.1 IMPORTANT ADVICE.
Transport, handling and storage. e product
may be transported upright on a pallet, or rotated
by 90° on its side
The appropriate side is shown clearly on an
information label on the product packing box.
It is forbidden to transport the product lying on
its other sides as it could irreparably damage it.
Note: follow the transport and maintenance rec-
ommendations on the water heater’s packaging.
POSITIONS ALLOWED DURING TRANSPORT POSITIONS NOT ALLOWED DURING TRANSPORT

7
2-2
Key:
AC - Domestic hot water outlet 3/4” M
AF - Domestic cold water inlet 3/4” M
SC - Condensate drain  
2.3 DIMENSIONS AND COMPONENTS.

8
2-3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16 17
18
19
20
21
22
23
24
Key:
1 - Front cover
2 - Cover
3 - Rear cover
4 - Heating unit (Resistance + Anode)
5 - Casing cover
6 - Compressor casing
7 - Electrical resistance
8 - Compressor
9 - Fan casing
10 - Fan
11 - Fan support plate
12 - Front column
13 - Control unit
14 - Condenser 1.5-2.5-2.7F
15 - P.C.B.
16 - Cap
17 - Bottom part cap
18 - Water probe wiring 1
19 - PDC probe wiring 2
20 - Interface wiring
21 - Electrical integration
22 - Compressor wiring
23 - Fan wiring + terminal block
24 - Condenser 10F
Not shown: manual, dielectric connection, con-
densate draining pipe, safety unit.

9
3-1
Min.
120
mm
522 mm
Min. 400 mm
Min.
600 mm
>20 m3
Except for the volume of
bulky waste
Room temperature between 5 and
43°C, except for operation of the
water heater
Example of
installation without
ducts
Min.
200 mm
Note: observe the minimum distance indicated
to prevent air recirculation.
Note: observe a space of 450 mm in front of the
electrical appliance, so that the water heater can
be accessed for maintenance work.
- Laundry room: dehumidifying the room
and recovery of waste calories from washing
machines and tumble-dryers.
- Room in basement: recovery of free calories
released by the oor and walls of the base-
ment.
RECOMMENDED CONFIGURATIONS.
• 1st conguration: installation without duct in
unheated room (Volume > 20 m3) (Fig. 3-1).
INTERNAL/INTERNAL parameter (Para-
graph 4.5).
Examples of unheated rooms:
- Garage: Recovery of free calories released by
car engine when turned o aer running, or
other electrical appliances operating.
Resistance of the wall • Withstands a load of at least 300 kg (water heater xing surface)
Note: only install a water storage tank under the water heater when this is positioned above in
residential buildings.
e installation area shall be suitable for protection index IPX1B, as set forth in IEC 64-8
Non-ducted or
semi-ducted conguration
Ducted conguration
Type of installation room
Room examples
Volume of room where air is extracted
Temperature of water heater installation
room
Air inlet temperature
Ceiling height
Surface area required
• Unheated room, characterised by temperature
exceeding 5°C and preferably insulated from
the home's heated rooms.
• Recommended room = underground or base-
ment, room where the temperature is higher
than 10°C all year round.
• garage, boiler room (with the exception of
rooms where type B generators are installed),
basement oor, ironing room, etc.
• Volume > 20 m3
• from 5°C to 43°C.
• -5°C to 43°C.
• > 2.00 m.
• 2.10 m2.
• e wall must be perpendicular.
• Room that is at least frost-free.
• Recommended room = living space (the heat
loss from the water heater is not wasted), close
to the outer walls.
• Do not install close to sleeping areas because of
the noise produced.
• laundry room, cellar, cupboard in entrance hall,
etc.
• /
• > 1°C.
• -5°C to 43°C.
• > 2.00 m.
• 2.10 m2.
• e wall must be perpendicular.
3INSTALLATION.
3.1 CHOOSING THE PLACE OF
INSTALLATION.

10
3-3
3-2
Room temperature between 5 and
43°C, except for operation
of the water heater
Mandatory air
inlet
Ø 125 mm
Min.
120
mm
522 mm
Min.
670 mm
Duct on air outlet
Example of
installation with 1
exhaust duct
Min.
200 mm
Possible consequence:
- In the event of installation with air intake in
the same room and expulsion through a duct,
the ventilation openings must be sized with
a minimum diameter of 125 mm.
Note: in winter, the inlet air will be colder than
that discharged by the water heater, which will
increase room cooling.
Note: observe a space of 450 mm in front of the
electrical appliance, so that the water heater can
be accessed for maintenance work.
Note: observe a space of 450 mm in front of the
electrical appliance, so that the water heater can
be accessed for maintenance work.
CONFIGURATIONS IN CERTAIN CONDI-
TIONS (subject to assessment).
• Installation in unheated room, with 1 duct
only (volume > 20 m3) (Fig. 3-3).
INTERNAL/EXTERNAL parameter (Para-
graph 4.5).
Min.
120
mm
522 mm
Min.
670 mm
Room at minimum
antifreeze
Example of
installation with
ducts
Min.
100 mm
• 2nd conguration: installation in a heater or
unheated room, with ducts (Fig. 3-2).
EXTERNAL/EXTERNAL parameter (Par-
agraph 4.5).
Recommendations:
- Comply with maximum duct lengths (Para-
graph 3.4).
- Use rigid or semi-rigid pipes.
- Provide air inlet and outlet grids to avoid
ingress of foreign bodies. Note: manually
shuttered air inlet and outlet grids are for-
bidden.

11
3-4 3-5
4 - If the wall is load-bearing (concrete, stone,
bricks) (Fig. 3-4), anchor with Ø10 mm bolts
or drill holes for Ø10 mm MOLLY bolts.
5 - If the wall is not load-bearing (Fig. 3-5) it is
mandatory to put the water heater on a mount
(optional). Put the water heat on the mount
to trace the xing points. Drill the holes and
reposition the water heater. e top bracket
must be secured (using a Ø10 mm anchor
at least, depending on the wall) to prevent it
from tipping over.
3.2 PRODUCT INSTALLATION.
1 - Take the water heater to the place of installa-
tion.
e device has various handholds to help
move it to the place of installation.
Use the bottom and top handholds to carry
the water heater to its place of installation.
2 - Open the packaging.
3 - Separate the boiler from the pallet and place
it next to the hydraulic connection.
e water heater must be installed on a
perpendicular wall (± 1°) or on smooth at
surface (± 1°).
Other prohibitions:
- Do not connect the device's fan to a tum-
ble-dryer
- Avoid very dusty rooms
- Do not extract air containing solvents or ex-
plosive materials.
- Do not connect the device to a suction hood
used to extract greasy or polluted air.
- Do not install the water heater in a room ex-
posed to frost
- Do not place any objects on the water heater
- In non-ducted or semi-ducted conguration,
do not place it in a room where an open cham-
ber heat generator is installed (type B).
Forbidden installation congurations Associated risks
e water heater takes air from a room containing a
paid heat source used for heating this room.
Excessive system consumption: the water heater no longer uses free calories, but uses those
produced by other devices connected to other energy sources.
Connection to a controlled mechanical ventilation
system (CMV).
e air ow rates in the thermodynamic water heater are incompatible with those of a CMV.
Furthermore, the CMV ducts may convey greasy vapour and dust, potentially harmful for
the duration in service of your water heater.
Connection to an attic.
In the presence of inadequate insulation between the building and the relative attics, this
type of installation may increase the thermal loss of the building.
In extreme cases, condensate might form on the ceilings of the rooms under the attic due
to its cooling.
ere is a greater risk from falling objects and dust ingress to the water heater in this
conguration, which could reduce its life expectancy.
duct which intakes air from the outside, conveying
cold air inside.
Signicant loss of the coecient of performance (COP) and much greater cooling of the
room.
Connection to a geo-thermal system. Excessive loss of load, and problems balancing the two fans in series.
High risk of clogging the evaporator.
FORBIDDEN CONFIGURATIONS.

12
3.5 ELECTRICAL CONNECTION.
Note: the water heater can be electrically con-
nected only aer being lled with water.
Note: do not t a programming clock or timing
devices that may interrupt the device's supply
voltage upstream of the water heater’s electrical
connection.
e water heater can be connected and operated
only with single-phase 230V AC power supply.
Connect the water heater with a cable with
conductors having a cross-section of at least 1.5
mm². Installation shall consist of:
- A circuit breaker or 16A multi-pole fuse with
contacts compliant with regulations in force.
- A 30 mA dierential circuit breaker.
If the power cable is damaged, for safety reasons
it must be replaced by the manufacturer, the
aer-sales service or similarly qualied sta.
Note: earthing is obligatory.
Do not connect the supply voltage directly to the
electrical resistance.
e safety thermostat with which the electrical
integration is tted must not be tampered with; if
required, it may be repaired/serviced exclusively
by skilled and qualied sta, according to the
instructions provided by Immergas. Failure to
comply with this clause shall void the warranty.
e device must be installed in compliance with
the provisions of the regulations in force.
Number of bends Overall length of the ducts* with air outlet and
inlet mounted on the wall
Overall length of the ducts** with air outlet and
inlet mounted on the wall
0 bends 10 m 21 m
1 90°
elbow tting 8 m 17 m
2 90°
elbow ttings 6 m 13 m
(*) semi-rigid ducts - (**) rigid ducts
Note: the use of D.H.W. recirculation is not fea-
sible: this method causes water destratication
in the tank and makes the heat pump and the
electrical resistance work more.
Removing the condensate.
Note: cooling of the circulating air in contact
with the evaporator results in the water contained
in the air condensing. The condensed water
owing down the back of the heat pump must
be removed from it and conveyed into suitable
plastic pipes.
On the basis of air humidity, up to 0.25 l/h of
condensate may be formed. e condensate
run-o must not be conveyed into the drain,
since the ammonia fumes that ow back from
the drain could damage the heat exchanger ns
and parts of the heat pump.
It is therefore obligatory to t a siphon for the
discharge of waste water (do not use the pipe
supplied under any circumstances to make a
siphon).
3.4 AIR INTAKE CONNECTION.
When the volume of the room where the water
heater is installed is less than 20 m3, the device
may be connected to air ducts with 125 mm di-
ameter. If these ducts are not insulated, conden-
sate might form in them during device operation.
It is therefore essential to choose insulated
air ducts.
Poor-quality air ducts (crushed, too long, or
with too many bends, etc.) may cause a loss of
performance.
Therefore flexible ducts are definitely not
recommended.
Note: if there are connections to the ducts, adjust
fan settings accordingly.
Note: the overall head loss on ducts and ttings
for discharge and intake of air must be less
than 70 Pa. Calculate the pressure drop using
the table below, according to the proposed duct
accessories.
For installation without ducts, the direction of
the grids can be altered to direct the air ows.
To do this, unscrew the grids and screw them
back in one of the other 2 positions provided.
It is forbidden to direct the grids facing each
other (Fig. 3-6).
3-6
3.3 HYDRAULIC CONNECTION.
Connection to the cold water inlet.
Before connecting the water supply, it is essential
to clean the pipes thoroughly, to avert the risk of
any metal or other particles entering the water
heater tank.
It is mandatory to install a safety device, set to
be triggered at 0.7 MPa (7 bar) (not supplied
with the water heater), sized 3/4”, compliant with
standard EN1487 as amended, and in any case
compliant with local regulations in force, to be
tted to the cold water inlet of the water heater.
e safety device must be protected from ice.
Note: no hydraulic ttings (stop valve, pressure
reducer, etc.) must be placed between the safety
unit and the cold water inlet of the water heater,
except for a copper pipe.
Connect the safety unit to an open drain pipe,
in a frost-free environment, with a permanent
downward gradient, to remove any expansion
water generated by the heating process or drain-
age water coming from the water heater itself.
e pipes used must withstand a temperature of
100°C and a pressure of 1 MPa (10 bar).
When the inlet water pressure exceeds 0.5 MPa (5
bar), a pressure reducer is required (not supplied
as standard).
e pressure reducer must be installed at the
beginning of the main distribution network.
A pressure of 0.3 to 0.4 MPa (3 and 4 bar) is
recommended.
Connection to the hot water inlet.
Note: do not connect the hot water directly to
copper pipes, in order to avoid copper/iron gal-
vanic coupling (risk of corrosion). It is therefore
obligatory to t a dielectric tting on the hot
water outlet (supplied with the device).
Any corrosion on the threads of the hot water
outlet tting, due to the tting supplied not
being used, shall void the product warranty.
In the event pipes in synthetic material have been
used (e.g.: PER), we strongly recommend install-
ing a thermostatic control device water heater
outlets and set it according to the performance
of the material used.

13
3-8
3-9
3-7
Wiring diagram
Example of connection to a photovoltaic system
e instructions for removing the front cover and
for accessing the terminal block can be found in
paragraph 5.5.
e photovoltaic station must be wired to the
appropriate connector provided (I1) (Fig. 3-10).
To pass the photovoltaic station’s connection
cable, a hole must be drilled in the bottom cap;
the point where the hole is to be drilled is marked
(Fig. 3-8).
Note: earth connection is mandatory.
230V~ - 50Hz signal
PV panel
Inverter
AC junction
box
Photovoltaic self-consumption contact.
e water heater is equipped with a contact to
fully exploit the electricity produced by the PV
system, in order to accumulate thermal energy
within the storage tank (self-consumption).
Having an inverter/electronic device which
supplies a signal when PV production exceeds
a certain value, when this contact is closed the
water heater is triggered in heat pump mode to
heat the DHW up to 62°C.
When the photovoltaic contact opens, the system
returns to the previous settings.

14
3-10
Θ>
Supply voltage
230 Vac
50Hz
e start time of the time slot and the duration
of the slot can be set with the arrow keys and ok
to conrm. e total minimum and maximum
heating periods between the two time slots are
respectively 12 and 20 total hours.
- Aer setting the parameters, check operation
of the water heater.
To return to the settings, refer to the "System
Settings" or "Setup Parameters" sections.
Commissioning.
Note: if the water heater has been tilted, wait at
least 1 hour prior to commissioning.
- Turn on the water heater.
- Check that the screen (4 Fig. 4-1) does not
display errors.
- During rst power-up, the adjustment instruc-
tions are displayed on the screen. Follow the
on-screen instructions carefully to set parame-
ters (date and time, air ducts, installation, pho-
tovoltaic, operating time slots, anti-legionella
system).
- Setting the programming time slots:
In the “heating mode” menu, select the “HP 24
hours, programmable resistance” or the “pro-
grammable HP and resistance” option where
you have the choice of setting two time slots.
3.7 COMMISSIONING.
Filling the water heater.
- Open the hot water taps.
- Open the cold water tap on the safety device
(ensure the unit emptying valve is closed).
- Run the hot water from the taps then close
them: the water heater is now full.
- Check water tightness of the pipe ttings.
- Check correct operation of hydraulic devices by
opening the discharge valve of the safety device
to eliminate any residues from inside the relief
valve.
3.6 WATER HEATER WIRING DIAGRAM.
Colour codes key:
BK - Black
BL - Blue
BR - Brown
GY - Grey
YE - Yellow
GN - Green
G / Y- Yellow / Green
RD - Red
WH - White
8 - Immersion heater
9 - Domestic hot water sensor
10 - High pressure sensor
11 - Compressor protection thermostat
12 - Compressor engage condenser
13 - Compressor
14 - Hot gas valve
15 - Control panel
Key:
1 - Water heater board
2 - Evaporator probe
3 - Air inlet probe
4 - Fan condenser - second speed
5 - Fan
6 - Fan engage condenser
7 - Safety thermostat

15
4-1
1
2
3
4
5
6
7
• Information ( ).
- Display the energy savings.
It allows you to view the utilisation rate of
the heat pump and electrical integration
over the last 7 days, the last 12 months, from
commissioning.
- Display power consumption.
It allows you to view energy consumption in
kW/hour, in recent days, in recent months,
in recent years.
- Display the budget parameters.
It allows you to view all the settings recorded
in the water heater.
• Settings ( ).
- Set the time and date.
Set the day and then conrm. en set the
month, year, hour and minutes.
- Set the operating time slots
It lets you dene the time slots in which the
device is authorised to start.
- Set the language.
French, English, Dutch, Spanish, Portu-
guese, German, Italian and Polish.
- Connections.
It allows you to turn o the support of elec-
trical integration.
4.3 MAIN MENU.
Open the settings by pressing the “Access key”
() (2 Fig. 4-1) and follow the on-screen
instructions (4 Fig. 4-1). Browse through the
menu by pressing the “down arrow” (7 Fig. 4-1)
to reduce the values or the “up arrow” (6 Fig. 4-1)
to increase the values.
Press the main key in the centre (1 Fig. 4-1) to
conrm.
4-2
MENU
Modalità MANUALE
Modalità ASSENZA
Informazioni
Impostazioni
• OPERATING mode ( ).
Choose the operating mode.
Select AUTO or MANUAL (see paragraph 4.6
"Operating modes").
• ABSENCE mode ( ).
Program an absence.
It allows you to indicate in the water heater:
- a permanent absence starting from the
current date;
- a programmed absence (set the start date of
the absence and the end date). On the eve of
your return, an anti-legionella cycle is acti-
vated. In this period, the water temperature
is kept above 15°C. e function can be in-
terrupted at any time: Disable absence .
4.2 DESCRIPTION OF THE SYMBOLS.
Symbol Description
Forced start set
Absence set / in progress
Hot water set-point temper-
ature
Stand-by
Electrical integration in oper-
ation
Heat pump in operation
Anti-legionella cycle
Reception of a signal at the inlet
of the photovoltaic system
• BOOST function ( ).
Press the key (5 Fig. 4-1) to increase the pro-
duction of hot water regularly.
Set the number of the BOOST operation days
(from 1 to 7). At the end of the chosen period,
the water heater resumes operation with the
initial settings. e BOOST can be interrupted
at any time: BOOST pause .
Key:
1 - Main parameters key that
conrms and saves data when
pressed
2 - Key to open the settings
3 - Key to return to the previous
screen
4 - Display
5 - Key to temporarily increase hot
water production
6 - Up arrow: increases values/
browses through menus
7 - Down arrow: reduced values/
browses through menus
4PARAMETER SETTINGS / USE.
4.1 REMOTE PANEL.

16
4.6 SELECTING THE OPERATING
MODE.
Press ( ) to access the Mode menu.
• In AUTO mode.
is operating mode automatically manages
the energy choice that allows maximum sav-
ings while guaranteeing an adequate comfort
in terms of hot water. e water heater anal-
yses the consumption of the previous days to
adapt the production of hot water according
to needs. It reacts to unexpected events to
ensure hot water by switching the heat pump
on. erefore, the set point temperature is
automatically adjusted between 50 and 62°C
according to the consumption prole. e
Water heater operates preferably through the
heat pump. e electrical integration can be
automatically selected to ensure a sucient
volume of hot water.
• MANUAL mode.
is mode allows you to dene the desired
amount of hot water by choosing the set
point. is set point is also represented as an
equivalence of number of showers (about 50
litres of hot water).
If the ECO mode is not active, the water
heater favours operation of the heat pump
only. However, if the air temperature is low
or consumption is substantial, the electrical
integration can be authorised as a support at
the end of heating to reach the temperature
set. If the ECO mode is active, the water
heater works only with the heat pump with
an air temperature ranging from -5 to +43°C.
Therefore electrical integration is not au-
thorised at the time of heating. is feature
optimises the savings, but can cause hot water
shortages. Regardless of the ECO adjustment,
if the air temperature exceeds the operating
time slots, the electrical integration will be
automatically selected to ensure a sucient
volume of hot water.
• BOOST mode.
This mode activates the heat pump and
electrical integration simultaneously at the
maximum set point of 62°C.
• ABSENCE mode.
is mode maintains the domestic hot water
temperature above 20°C using the heat pump.
Electrical integration can be activated if the
heat pump is not available.
4.7 DISPLAY THE INFORMATION
Open the “Info” menu to:
• Display the energy savings.
It allows you to view the utilisation rate of
the heat pump and electrical integration
over the last 7 days, the last 12 months, from
commissioning.
• Display the power consumption.
It allows you to view energy consumption
in kw/hour, in the last 7 days, in the last 12
months, from commissioning.
• Display the budget parameters.
It allows you to view all the settings recorded
in the water heater.
Access to the system settings: ( ) Settings .
• Block
is mode enables continuous operation only
with the boost.
• Hot water.
- Heating mode
is parameter denes the operating time
slots of the heat pump and of the electrical
integration according to the hot water
requirements:
HP 24h / ELEC
24h
Start at any time of
the day
HP 24h /
ELEC Prog
Start the heat pump
at any time of the
day, start the electri-
cal integration at the
programmed times
HP Prog /
ELEC Prog
Start in programmed
periods.
- Anti-legionella.
It allows you to turn on the water disinfec-
tion function several times a month. e
water temperature reaches 62°C 1-4 times
a month depending on the desired setting.
- PV Photovoltaic system.
is parameter is used to activate the device
coupled with a photovoltaic system. is
operating mode generates the forced start
of the heat pump when the water heater
receives a signal coming from the photo-
voltaic system. e setting automatically
returns to the previously selected mode
aer 30 minutes if the photovoltaic system
signal is lost. While receiving the signal the
set point temperature is automatically set at
62°C (not adjustable).
- Emergency mode.
Enabling this mode allows continuous op-
eration only with the electrical integration.
- Additional Electricity BOOST (electrical
integration).
It allows you to activate or not the electrical
integration support. If it is o, the device
will never use the electrical integration; in
case of low temperatures, a shortage of hot
water is possible.
• Ducting (aeraulic operation).
is parameter denes the aeraulic connection
type realised:
Inside / Inside Suction and return not
connected to air ducts
(ambient air)
Outside /
Outside
Suction and return con-
nected to air ducts (out-
side air)
Inside /
Outside
Return connected to an air
duct (semi-ducted)
4.4 SYSTEM SETTINGS.
Access to the system settings: () + Settings.
• Date and time.
Set the day and then conrm. Do the same for
the month, year, hour and minutes.
• Heating mode.
is parameter denes the operating time slots
of the heat pump and of the electrical integra-
tion according to the hot water requirements:
24/24 continuously Start at any time of
the day.
Programming Start in scheduled pe-
riods.
• Setting the programming time slots.
In the “heating mode” menu, select the “HP
24 hours, programmable resistance” or the
“programmable HP and resistance” option
where you have the choice of setting two time
slots. e start time of the time slot and the
duration of the slot can be set with the arrow
keys and ok to conrm. e total minimum
and maximum heating periods between the
two time slots are respectively 12 and 20
total hours.
• Language.
Possible settings in French, English, Dutch,
Spanish, Portuguese, German, Italian and
Polish.
• Connections.
It allows you to activate or not the electrical
integration support. If it is o, the device will
never use the electrical integration; in case
of low temperatures, a shortage of hot water
is possible.
4.5 PARAMETERS TO BE ADJUSTED
UPON INSTALLATION.
(If not set at the time of commissioning)
e installation parameters can be accessed in
INSTALLER MODE.
Press “Menu” (2 Fig. 4-1) and “Up arrow” at the
same time for 5 seconds (6 Fig. 4-1).
To exit the installer mode, proceed in the same
way or wait for 3 minutes.

17
• Once a year check that the electrical integration
works properly by measuring the output.
• Every 2 years check the heat exchange of the
heat pump.
• Every 2 years check that the fan works at two
speeds and the hot gas valve.
• Every 5 years check the coolant is charged.
Evaporator:
• e cleanliness of the evaporator and the fan
must be checked every 2 years. Clogging of
these components may reduce the performance
of the heat pump.
• Unscrew and remove the top cover to access
the evaporator. e front cover may also be
removed if necessary.
• If necessary, the evaporator and the fan are to
be cleaned with a so bristled brush. Brush
the evaporator very gently to avoid damaging
its ns. If the ns are folded, straighten them
using a suitable brush.
Note: always disconnect the device from the
power supply before starting any work.
Expansion valve:
• Only a refrigeration engineer is permitted to
access the expansion valve adjustment screw.
If the expansion valve is adjusted without
approval from the manufacturer, the product
warranty shall be voided.
• Generally speaking, it is not recommended to
change the expansion valve setting before all
other repair solutions have been exhausted.
Condensate draining pipe:
• Once a year check cleanliness of the condensate
draining pipe. Any pollution (dust) in the room
may in fact cause deposits in the condensate
recovery tank. ese deposits may block the
condensate draining pipe and cause excessive
accumulation of water in the tank, which could
lead to malfunctions.
5.3 MAINTENANCE BY APPROVED
PROFESSIONALS.
e device must be checked by a professional
once a year, in order to ensure its long-term
performance.
• Disconnect the device from the electricity
(circuit-breaker, fuses, etc.)
• Drain the tank:
- close the cold water inlet tap of the safety unit,
- open a hot water tap,
- put the safety valve in the drain position.
• Remove the bottom cover.
• Disconnect the wires from the thermostat
terminals.
• Dismantle the heating unit.
• Replace the magnesium anode. e magnesium
anode has to be changed every 2 years or as
soon as its diameter is less than 10mm.
• Remove the scale deposited as sludge or akes
in the bottom of the tank every two years,
and carefully clean the casings of the heating
elements and thermostat. Do not scratch or
remove the scale attached to the walls, as this
could aect the coating. Residues may be re-
moved using a water and dust vacuum cleaner.
• Ret the heating unit with a new seal, carefully
and gradually tightening the nuts (cross-tight-
ening).
• Fill the water heater by leaving a hot water tap
open, if the water ows it indicates that the
water heater is full.
• Check the water tightness of the seal and only
then replace the thermostat and its ttings, and
reconnect the supply voltage.
• e next day, check the water tightness of the
seal again and gently tighten the nuts again if
necessary.
• Check the electrical connections.
• Check that the temperature probe is properly
positioned in the sample point near to the
electrical integration (the probe must be at the
bottom of the sample point).
• Once a year check that the water heater is
connected to the ducts.
Check that the ducts are properly positioned
and are not obstructed.
• Once a year check that there are no loose wires
in the internal and external wiring and that all
connectors are in place.
5RECOMMENDATIONS  MAINTENANCE AND
REPAIRS.
5.1 ADVICE FOR THE USER.
You must empty the water heater if the absence
mode cannot be used or when the device is not
on. Proceed in the following way:
• Stop the supply voltage.
• Close the cold water inlet tap.
• Open a hot water tap.
• Put the safety valve in the drain position.
Important note - End of the device’s service life:
• At the end of its service life, the device must
be taken to a sorting centre for electrical and
electronic equipment for recovery of uids.
Do not dispose of the device with household
waste, but dispose of it in the collection cen-
tres provided, where it can be recycled. Check
your local collection service to nd out about
existing waste collection centres.
• It is forbidden by law to discharge the coolant
contained in the device into the atmosphere.
Degassing operations are strictly forbidden,
and may be hazardous.
Note: the GWP (Global Warming Potential) of
R134a is 1430.
5.2 HOUSEHOLD MAINTENANCE.
e user must perform some minor home main-
tenance operations on the water heater: act on the
safety valve once or twice a month to remove any
limestone deposits and ensure it is not blocked.
Regularly check that there are no alarms on the
display. If there are any alarms, contact the au-
thorised local service centre to address the faults.
It is recommended to treat water with a soener
in the areas where there is a high amount of scale
(>20°F). Water hardness must remain above
15°F. e soener does not lead to warranty der-
ogations, provided it is dosed in a workmanlike
manner and regularly maintained.
Water treatment must comply with the provisions
of UNI 8065.

18
Error
Code Cause Consequences System status / Solution
W.03
Defective water tem-
perature probe (sample
point)
No possible warming up Check the connections or replace the
probe (reference A1).
W.07
No water in the storage
tank or ACI connection
open
No warming up
No water in the storage tank.
Check the thread connection (reference
AC), conductivity of the water.
W.09 Water temperature too
high (> 80°C)
Risk of mechanical safety device activation
No warming up
Check the connections and the position
of the probe (reference A1).
Make sure the integration is not piloted
permanently
If necessary, reset the mechanical safety
device and contact the installer.
W.15 Date and time not set HP stoppage.
If PROG Enter date and time.
W.19 0V electrical connection Complete shut-down
Check the electrical connection to the
mains.
e supply voltage must be permanent.
W.21 Faulty air inlet temper-
ature probe.
HP stoppage.
Heating with electrical integration
Check the connections or replace the
probe (reference A2).
W.22 Faulty evaporator tem-
perature probes
HP stoppage.
Heating with electrical integration
Check the connections or replace the
evaporator probes (reference A2). Check
correct operation of the fan.
W.25 Pressure switch alarm
(faulty high pressure)
HP stoppage.
Heating with electrical integration
Ensure the air temperature has not ex-
ceeded 43°C.
If the mode key is pressed, the fault resets,
contact the installer.
W.28 Defrosting malfunction HP stoppage.
Heating with electrical integration
Check the connections or replace the coil
(reference T2).
Check operation of the fan.
If the mode key is pressed, the fault resets,
contact the installer.
W.301 Inecient HP heating HP stoppage.
ELEC heating.
Check operation of the fan and ensure the
air ow is correct.
Check the coolant gas is charged.
W.302 Inecient HP heating HP stoppage.
ELEC heating.
Check operation of the fan and ensure the
air ow is correct.
Check the coolant gas is charged.
W.303 Faulty pressure switch HP stoppage.
ELEC heating.
Check the coolant gas is charged.
If it is charged, replace the pressure switch.
W.304 HP deviation HP stoppage.
ELEC heating. Check the coolant gas is charged.
W.305 Probes waste deviation HP stoppage.
ELEC heating.
Check the connections (A2) and the
position of the air probe and the evap-
orator probe.
If necessary, replace the probe bundle.
5.4 TROUBLESHOOTING SUPPORT.
Control panel alarm codes
Errors can be suspended or reactivated by
pressing “OK”.
is action also stops the buzzer.

19
5-1 5-2 5-3
5-4 5-5 5-6
Accessing the heat pump compartment.
Note: always disconnect the device from the
power supply before starting any work.
- Unscrew the 2 screws on the front cover (Fig.
5-4).
- Rotate the cover to the le to unlock it (Fig.
5-5).
- Li the cover to remove it (Fig. 5-6).
5.5 WORK ON THE WATER HEATER.
Accessing the electronic components.
Note: always disconnect the device from the
power supply before starting any work.
- Remove the four screws from the cover with
a screwdriver (Fig. 5-1).
- Pull the column to release it and then extract
it from the bottom cap (Fig. 5-2).
- Unscrew the 2 screws on the cover (Fig. 5-3).

20
• Incorrect maintenance:
- Abnormal formation of scale on heating
elements or safety units.
- No maintenance of safety unit, leading to
excessive pressure.
- No maintenance on magnesium anode (mag-
nesium anode diameter must be at least 10
mm).
- No cleaning of evaporator or condensate
evacuation.
- Modification of the original equipment,
without notifying the manufacturer, or use
of spare parts not recommended by the
manufacturer.
5.9 DECLARATION OF CONFORMITY.
If required, the declaration of conformity is
available at the manufacturer’s premises.
• is device has been designed to serve one
Residential Housing Unit only (and similar)
subject to assessment of the energy require-
ment for domestic hot water; it is not a heating
system pursuant to the legislation in force.
- Water pressure above 0.5 MPa (5 bar).
- Electrical power with significant voltage
peaks (mains, lightning, etc.).
- Damage from undetectable problems caused
by choice of location (places dicult to ac-
cess) and that could have been avoided if the
device had been repaired immediately.
• System does not comply with regulations,
standards, professional rules, especially:
- Missing or incorrectly tted new safety unit,
modication of calibration, etc.
- Insulating sheath (cast iron, steel or insulat-
ing) missing on hot water connection pipes,
which could cause their corrosion.
- Faulty electrical connection: incorrect earth-
ing, inadequate cable section, connection
of exible cables without metal terminals,
failure to comply with the wiring diagrams
provided by the Manufacturer.
- Switching on the device without rst lling
it (dry heating).
- Positioning the device without considering
the instructions in the manual.
- External corrosion caused by poor sealing on
pipes.
Note: Do not connect the supply voltage directly
to the electrical resistance.
5.7 AFTERSALES SERVICE.
Only use original spare parts. Specify the exact
type of water heater and serial number for any
order.
Operations on electrical parts must be per-
formed by skilled and qualied sta pursuant
to the legislation in force.
If the power cable is damaged, for safety reasons
it must be replaced by the aer-sales service or
similarly qualied sta.
Scope of application of the warranty.
5.8 SCOPE OF APPLICATION OF THE
WARRANTY.
The following faults are excluded from this
warranty:
• Abnormal environmental conditions:
- Various damages caused by impact or falling
during handling aer leaving the factory.
- Placement of the device in a location subject
to frost or bad weather (humidity, aggressive
or poorly ventilated rooms).
- Use of water with features that do not comply
with those set forth by the regulations in force
on the matter.
Fault detected Possible cause Diagnosis and solution
Water not hot enough
Delivery temperature on a value that is too low. Adjust the delivery temperature to a
higher value. Refer to the settings menu.
Heating element or its wiring partially not working.
Check the resistance of the heating ele-
ment on the connector of the electrical
bundle and the good conditions of the
bundle itself.
No warming up.
No hot water. No storage tank supply voltage: fuses, wiring, etc. Check that the storage tank’s power cables are live.
Poor ow of the hot water tap. Safety valve damaged or clogged. Replace the safety device.
Continued loss of water to the
level of the safety unit outside
the heating period.
Network pressure too high.
Make sure the outlet pressure of the
water meter does not exceed 0.5 MPa
(5 bar), otherwise install a pressure
reducer set at 0.3 MPa (3 bar) at the
beginning of the water mains.
The electrical integration does
not work.
Faulty electrical thermostat. Replace the thermostat.
Faulty heating element. Replace the heating element.
Outow of condensates.
e storage tank is not properly levelled. Ensure that the storage tank is placed on
a at surface.
Condensate ow obstructed.
Clean (see the “maintenance carried
out by an authorised professional” par-
agraph).
Check there is no siphon on the drain
pipe.
Presence of odours. ere is no siphon. Install a siphon.
ere is no water in the siphon. Fill the siphon.
Emission of vapour during the
bleeding phase.
Disconnect the supply voltage and
contact the installer.
Loud boiling noise. Presence of scale in the storage tank. Descale it.
Another kind of malfunction. Contact the aer-sales service for any
other kind of malfunction.
5.6 QUICK FAULT DIAGNOSIS
FOR USE CARRIED OUT BY A
PROFESSIONAL TECHNICIAN.