Ferroli OMNIA S HYBRID C 3.2 Quick start guide

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Cod. 3542B250 - Rev. 00 - 02/2022
INSTALLATION, USE AND MAINTENANCE MANUAL
EN
OMNIA S HYBRID C 3.2
INDOOR WALL UNIT FOR HYBRID REVERSIBLE SPLIT HEAT PUMP WITH INSTANT DHW PRODUCTION
3542B250

2EN Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
• Read the warnings in this instruction booklet carefully since they pro-
vide important information on safe installation, use and maintenance.
• This instruction booklet is an integral and essential part of the product
and must be kept with care by the user for future reference.
• If the unit is sold or transferred to another owner or if it is to be moved,
always make sure the booklet stays with the appliance so that it can be
consulted by the new owner and/or installer.
• Installation and maintenance must be carried out by professionally
qualified personnel, according to current regulations and the manufac-
turer's instructions.
• Incorrect installation or inadequate maintenance can result in damage
or injury. The manufacturer declines any liability for damage caused
by errors in installation and use or by failure to follow the instructions
provided.
• Before carrying out any cleaning or maintenance operation, disconnect
the unit from the power supply using the system switch and/or the spe-
cial cut-off devices.
• In case of a fault and/or poor operation, deactivate the unit and do
not try to repair it or directly intervene. Contact professionally qualified
personnel. Any repair/replacement of the products must only be carried
out by qualified personnel using genuine parts. Failure to comply with
the above can compromise the safety of the unit.
• Periodic maintenance performed by qualified personnel is essential in
order to ensure proper operation of the unit.
• This unit must only be used for its intended purpose.
• Any other use is deemed improper and therefore hazardous.
• After unpacking, check the good condition of the contents. The pack-
ing materials are potentially hazardous and must not be left within the
reach of children.
• The unit can be used by children aged at least 8 years and by per-
sons with reduced physical, sensory or mental capabilities, or lacking
experience or the necessary knowledge, only if under supervision or
they have received instructions on its safe use and the related risks.
Children must not play with the unit.
• Cleaning and maintenance intended to be done by the user can be
carried out by children aged at least 8 years only if under supervision.
• In case of doubt, do not use the unit. Contact the supplier.
• The unit and its accessories must be appropriately disposed of in com-
pliance with current regulations.
• The images given in this manual are a simplified representation of the
product. In this representation there may be slight and insignificant dif-
ferences with respect to the product supplied.
The CE marking certifies that the products meet the essential requirements of the relevant directives in force.
The declaration of conformity may be requested from the manufacturer.
This symbol which appears on the product or the packaging or in the documentation, indicates that the product must not be collected, recycled or
disposed of with household waste at the end of its life cycle.
Improper disposal of electrical and electronic equipment can cause the leakage of hazardous substances contained in the product. In order to
avoid any potential harm to the environment or health, the user is requested to separate this equipment from other types of waste and deliver it
to the local city waste collection service or to request collection by the distributor according to the conditions and methods included in national
legislation in the implementation of Directive 2012/19/EU.
Separate waste collection and the recycling of discarded equipment helps to preserve natural resources and guarantee that the waste treated with
respect for the environment and ensuring the protection of health.
For further information on the methods of collecting waste from electrical and electronic equipment, please contact your local councils or the
competent public authorities for the issue of authorisations.
Allowed uses
The series of heat pumps in question is ideal for producing hot and cold water to use in hydronic systems for the purpose of air conditioning/heating and producing
instant domestic hot water.
Any other use that differs from or is outside the operational limits outlined in this manual is forbidden unless agreed with the company beforehand.
Note
This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by lay persons.
The original documentation is written in English. All other languages are translations.
The manufacturer declines all responsibility for any inaccuracies in this manual due to printing or typing errors.
The manufacturer reserves the right to modify the products contents in this catalogue without previous notice.

3
EN
Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
SUMMARY
1. SAFETY PRECAUTIONS ..........................................................................................5
1.1 Special requirements for R32 refrigerant ....................................................................... 6
1.2 Information servicing .................................................................................................... 13
2. GENERAL FEATURES............................................................................................16
2.1 Presentation of the system........................................................................................... 16
2.2 Components supplied with the indoor unit ................................................................... 17
2.3 User interface ............................................................................................................... 17
2.4 Accessories .................................................................................................................. 18
2.4.1 Hydraulic kit .................................................... 18
2.4.2 Fittings cover kit................................................. 18
3. TECHNICAL DATA AN PERFORMANCE..............................................................19
3.1 Heat pump technical data............................................................................................. 19
3.2 ERP data ...................................................................................................................... 20
3.3 Heat pump operational limits........................................................................................ 20
3.4 Boiler technical data ..................................................................................................... 21
3.4.1 Table for boiler technical data ...................................... 21
3.4.2 Boiler ErP product data sheet ...................................... 22
3.5 Available pressure ........................................................................................................ 23
3.5.1 Heat pump circulator + boiler circulator............................... 23
3.5.2 Heat pump circulator ............................................ 23
3.5.3 Boiler circulator ................................................. 23
4. DIMENSIONAL AND PHYSICAL DATA.................................................................24
5. GENERAL VIEW AND INTERNAL UNIT FUNCTIONAL DIAGRAM...................25
5.1 General view ................................................................................................................ 25
5.2 Indoor unit functional diagram ...................................................................................... 25
6. EXAMPLE OF SYSTEM LAYOUT ..........................................................................26
7. INSTALLATION .......................................................................................................27
7.1 Inspections on arrival ................................................................................................... 27
7.1.1 Packing and storing .............................................. 27
7.1.2 Selecting the installation site and minimum operating area for indoor unit .... 27
7.2 Limits to the length and height di󰀨erence of refrigerant pipes...................................... 29
7.3 Refrigerant connections ............................................................................................... 30
7.3.1 Airtight test and leakage detection................................... 31
7.3.2 Air purge with vacuum pump ....................................... 31
7.3.3 Heat insulation.................................................. 32
7.3.4 Refrigerant amount to be added .................................... 32
7.4 Hydraulic connections .................................................................................................. 32
7.4.1 Antifreeze system, antifreeze uids, additives and inhibitors .............. 32
7.4.2 Characteristics of the system water.................................. 32
7.4.3 Water lter ..................................................... 33
7.4.4 Tips for a successful installation .................................... 33
7.4.5 Filling with water ................................................ 34
7.4.6 Water circuit anti-freeze protection .................................. 34
7.4.7 Water piping insulation ........................................... 34
7.5 Boiler gas connection ................................................................................................... 35
7.6 Boiler fume ducts.......................................................................................................... 35
7.6.1 Warnings ...................................................... 35
7.6.2 Connection with coaxial pipes ...................................... 35
7.6.3 Connection with separate pipes .................................... 36
7.6.4 Use of exible hose pipe Ø50 and Ø60............................... 38
7.6.5 Connection to collective chimneys .................................. 39
7.7 Connection to boiler condensate discharge ................................................................. 40
7.8 Electrical connections................................................................................................... 40
7.8.1 Electrical data .................................................. 40
7.8.1 Opening the front panel ........................................... 42
7.8.2 User terminal block connections .................................... 42
H-L1-C - Digital inputs for room thermostat.............................. 42
7.8.2 Connection of system add-ons ..................................... 43
7.8.3 How to access the heat pump hydronic board ......................... 43
7.8.4 Heat pump hydronic board ........................................ 44
7.8.5 Connections to the heat pump board ................................ 46
P_o - For outside circulation pump or water pump zone 1 .................. 46
P_c - Water pump of zone 2 ......................................... 46
SV3 - 3-way mixing valve for zone 2 ................................... 46
SV2 - 3-way diverter valve for heat/cool ................................ 46
SG Digital inputs for smart grid input from mains electricity ................. 46
Additional temperature probes ....................................... 46
8. USER INTERFACE...................................................................................................47
8.1 Key function description ............................................................................................... 47
8.2 Meaning of display icons .............................................................................................. 47
8.3 Switching DHW and system on and o󰀨 ........................................................................ 48
8.4 DHW and system set point conguration ..................................................................... 49
9. GENERAL USER MENU..........................................................................................50
9.1 Boiler menu .................................................................................................................. 50
9.1.1 User boiler menu ................................................ 50
9.1.2 Boiler service menu .............................................. 51
Menu for modifying the [TSP] parameters............................... 51
9.2 Heat pump menu.......................................................................................................... 53
9.2.1 User heat pump menu (hp menu) ................................... 53
Heat / Cool operating mode selection (Operation Mode) ................... 56
Daily schedule / climatic curves / Eco mode (Preset Temp) ................. 56
Cool mode weekly schedule (Preset Temp. Cool)......................... 57
Heat mode weekly schedule (Preset Temp. Heat) ........................ 57
Climate curves (Weather Temp Set) ................................... 57
Economy mode (Eco Mode) ......................................... 57
Silent Mode ...................................................... 57
Holiday mode..................................................... 58
Error code ....................................................... 58
Parameters ...................................................... 58
Display.......................................................... 58
Operation Parameter............................................... 58
9.2.2 Heat pump service menu.......................................... 59
10. SETTINGS TO ENTER BEFORE STARTING UP ...............................................62
10.1 Dip switch setting on indoor unit hydronic board........................................................ 62
10.2 Dip switch setting of outdoor unit cooling circuit board .............................................. 63
10.3 Climatic curves ........................................................................................................... 63
10.3.1 Temperature curves for heating mode and ECO heating mode ........... 63
Climatic curve 9 in heating mode settable by the user ..................... 64
10.3.2 Temperature curves for cooling mode ............................... 65
Climatic curve 9 in cooling mode settable by the user ..................... 65

4EN Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
The original documentation is written in Italian. All other languages are translations.
The manufacturer declines all responsibility for any inaccuracies in this manual due to printing or typing errors.
The manufacturer reserves the right to modify the products contents in this catalogue without previous notice.
11. COMMISSIONING ..................................................................................................66
11.1 Heat pump commissioning ......................................................................................... 66
11.1.1 Preliminary heat pump checks..................................... 66
Refrigerating part.................................................. 66
11.2 Commissioning the boiler ........................................................................................... 66
11.2.1 Boiler preliminary checks......................................... 66
11.2.2 First boiler switch-on ............................................ 66
11.2.3 Successive boiler switch-ons...................................... 67
11.2.4 Transformation of boiler gas feed .................................. 67
11.2.5 Checking the boiler combustion values .............................. 67
Boiler calibration procedure [AUTO SETUP ............................. 67
11.2.6 Boiler test mode [Test] ........................................... 68
11.3 Final check before turning on the unit ........................................................................ 68
11.4 Turn on the unit........................................................................................................... 68
11.5 System delivery water setpoint setting ....................................................................... 68
11.5.1 Heating mode.................................................. 68
11.5.2 Cooling mode.................................................. 69
11.6 Setting DHW temperature production......................................................................... 69
12. TROUBLESHOOTING ...........................................................................................69
12.1 General guidelines ..................................................................................................... 70
12.2 General symptoms ..................................................................................................... 70
12.3 Heat pump error codes............................................................................................... 71
12.4 Boiler fault codes........................................................................................................ 74
13. MAINTENANCE......................................................................................................76
13.1 Access to internal components................................................................................... 77
13.2 Water load and system hydraulic pressure adjustment.............................................. 78
13.3 System water drain..................................................................................................... 78
13.4 Periodic maintenance of the heat pump..................................................................... 78
13.5 Unscheduled maintenance and replacement of heat pump components ................. 79
13.5.1 Heat pump circulator ............................................ 79
13.6 Periodic boiler maintenance ....................................................................................... 80
13.7 Unscheduled maintenance and replacement of boiler components........................... 80
13.7.1 Replacement of the boiler gas valve ................................ 80
13.7.2 Replacement of the boiler main heat exchanger ....................... 81
13.7.3 Replacement of the boiler electronic board ........................... 82
13.7.4 Replacement of boiler fan ........................................ 82
13.7.5 Replacement of boiler pressure transducer........................... 83
13.7.6 Boiler water inlet lter cleaning .................................... 83
14. WIRING DIAGRAM ................................................................................................84
15. REFRIGERANT DIAGRAM ...................................................................................85

5
EN
Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
1. SAFETY PRECAUTIONS
The precautions listed here are divided into the following types. They are quite important, so be sure to follow them carefully.
Meanings of DANGER, WARNING, CAUTION and NOTE symbols.
HAZARD
Indicates an imminently hazardous situation which if not avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation which if not avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which if not avoided, may result in minor or moderate injury.
It is also used to alert against unsafe practices.
NOTE
Indicates situations that could only result in accidental equipment or property damage.
Read these instructions carefully before installation. Keep this manual in a handy for future reference.
Improper installation of equipment or accessories may result in electric shock, short-circuit, leakage, fire or other damage to the equipment. Be sure to only use acces-
sories made by the supplier, which are specifically designed for the equipment and make sure to get installation done by a professional.
All the activities described in this manual must be carried out by a licensed technician. Be sure to wear adequate personal protection equipment such as gloves and
safety glasses while installation the unit or carrying out maintenance activities.
Contact your dealer for any further assistance.
Table 1 - Information symbols
Symbol Description
This symbol indicates that this appliance uses a flammable refrigerant. If the refrigerant leaks and is exposed to a strong external ignition,
there is a risk of fire.
This symbol indicates that the instruction manual must be read carefully
This symbol indicates that the support staff should refer to the installation manual when handling this appliance.
This symbol shows that information is available such as the operating manual or the installation manual.
WARNING
Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requir-
ing the assistance of other skilled personnel shall be carried out under the supervision of the person competent in
the use of flammable refrigerants.

6EN Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
1.1 Special requirements for R32 refrigerant
WARNING
• Do NOT have refrigerant leakage and open flame.
• Be aware that the R32 refrigerant does NOT contain an odour.
WARNING
The appliance shall be stored so as to prevent mechanical damage and in a well-ventilated room without continu-
ously operating ignition sources (example:open flames,an operating gas appliance) and have a room size as speci-
fied below.
NOTE
• Do NOT re-use joints which have been used already.
• Joints made in installation between parts of refrigerant system shall be accessible for maintenance purposes.
WARNING
Make sure installation,servicing,maintenance and repair comply with instructions and with applicable legislation
(for example national gas regulation) and are executed only by authorised persons.
NOTE
Symbol mcdenotes the refrigerant charge of a single refrigerating system. Where multiple refrigerating systems are servicing the same space, the refrig-
erating system with the largest refrigerant charge shall be used.
• Pipework should be protected from physical damage.
• Installation of pipework shall be kept to a minimum.
If the total refrigerant charge in the system (mc) is ≤1.842 kg, there are no additional minimum floor area require-
ments.
If the total refrigerant charge in the system (mc) is >1.842 kg, you need to comply with additional minimum floor area requirements as described in the following flow
chart.
a
A
B
≥VAmin
≥VAmin
≥1.8m
≥ 1.5m
fig. 1 - indoor unit installation
Legend
aIndoor unit
ARoom where the indoor unit is installed.
BRoom adjacent to room A.
VAmin n°2 openings (n°1 at the top and n°1 at the bottom) between Room A and Room B.
NOTE
Spaces connected by only drop ceilings, duct work, or similar connections shall not be considered a single space.
For units mounted higher than 1,6 m, spaces divided by partition walls which are no higher than 1,6 m shall be considered a single space.
For fixed appliances, rooms on the same floor and connected by an open passageway between the spaces can be considered a single room when deter-
mining compliance to Amin, if the passageway complies with all of the following .
• It is a permanent opening.
• It extends to the floor.
• It is intended for people to walk through.

7
EN
Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
yes
no
yes
no
Input from installer:
-Area of adjacent room B (AroomB) (m2)
Start
Use table 3 to calculate the
total minimum floor area (Amintotal)(m2)requi-
red for the total refrigerant charge (mc)
Input from installer:
-Total refrigerant charge (mc)(kg)
-Area of room A (AroomA) (m2)
Use table 2 to calculate the
maximum refrigerant charge (mmax)(kg)
allowed for room A.
The unit can be installed in room A, and
without further room size or ventilation
requirements.
Unit can be installed at room A if:
-2 ventilation openings (permanently open) are provided between room A and B, 1 at the top and 1 at the bottom.
-Bottom opening:The bottom opening must meet the minimum area requirements(VAmin).It must be as close as possible to the floor.If the ventilation
opening starts from the floor, the height must be ≥20mm. The bottom of the opening must be situated≤100mm from the floor. At least 50% of the required
opening area must be situated <200 mm from the floor. The entire area of the opening must be situated <300 mm from the floor.
-Top opening:The area of the top opening must be larger than or equal to the bottom opening. The bottom of the top opening must be situated at least 1.5
m above the top of the bottom opening.
-Ventilation openings to the outside are NOT considered suitable ventilation openings (the user can block them when it is cold).
Use table 4 and dm to calculate the
minimum opening area for natural
ventilation between room A and room
B(VAmin)(cm2)
Determine the refrigerant amount that
exceeds mmax(dm)(kg).(dm=mc-mmax)
Contact your dealer
mmax≥mc?
Amin total≤AroomA+AroomB?

8EN Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
The flow chart uses the following tables:
Table 2 - Maximum refrigerant charge allowed in a room based on the surface of the installation area.
A [m2] 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10
mmax [kg] 0.21 0.41 0.62 0.83 1.04 1.24 1.45 1.66 1.87 2.07 2.28 2.49 2.62 2.72 2.82 2.91 3.00 3.09 3.17 3.25
NOTE
For wall-mounted models, the “installation height (H)” is considered to be 1800 mm to be compliant with the IEC 60335-2-40 standard: 2018 clause GG2.
For intermediate Aroom values(i.e. when Aroom is between two values from the table), consider the value that corresponds to the lower Aroom value from the
table. If Aroom=3,6 m2, consider the value that corresponds to “Aroom=3,5 m2”.
Table 3 - Minimum floor area
mc [kg] 1.9 2 2.1 2.2 2.3 2.4 2.5
A
mintotal
[m
2
]4.58 4.83 5.07 5.31 5.55 5.79 6.03
NOTE
For wall-mounted models, the “installation height (H)” is considered to be 1800 mm to be compliant with the IEC 60335-2-40 standard: 2018 clause GG2.
For intermediate mc values (i.e. when mc is between two values from the table), consider the value that corresponds to the higher mc value from the table.
If mc=1,97kg, consider the value that corresponds to “mc=2kg”. Systems with total refrigerant charge lower than 1.84kg are not subjected to any room
requirements.
Table 4 - Minimum venting opening area for natural ventilation
Sub-table mc= 1.9 kg Sub-table mc= 2.0 kg Sub-table mc= 2.1 kg Sub-table mc= 2.2 kg
AroomA [m2] mmax [kg] dm=mc-mmax [kg] VAmin [cm2] AroomA [m2] mmax [kg] dm=mc-mmax [kg] VAmin
[cm2]AroomA [m2] mmax [kg] dm=mc-mmax [kg] VAmin [cm2]AroomA [m2] mmax [kg] dm=mc-mmax [kg] VAmin [cm2]
0.5 0.21 1.69 395 0.5 0.21 1.79 419 0.5 0.21 1.89 442 0.5 0.21 1.99 465
1 0.41 1.49 347 1 0.41 1.59 370 1 0.41 1.69 394 1 0.41 1.79 417
1.5 0.62 1.28 299 1.5 0.62 1.38 322 1.5 0.62 1.48 345 1.5 0.62 1.58 369
2 0.83 1.07 250 2 0.83 1.17 274 2 0.83 1.27 297 2 0.83 1.37 320
2.5 1.04 0.86 202 2.5 1.04 0.96 225 2.5 1.04 1.06 248 2.5 1.04 1.16 272
3 1.24 0.66 153 3 1.24 0.76 177 3 1.24 0.86 200 3 1.24 0.96 223
3.5 1.45 0.45 105 3.5 1.45 0.55 128 3.5 1.45 0.65 152 3.5 1.45 0.75 175
4 1.66 0.24 57 4 1.66 0.34 80 4 1.66 0.44 103 4 1.66 0.54 127
4.5 1.87 0.03 8 4.5 1.87 0.13 32 4.5 1.87 0.23 55 4.5 1.87 0.33 78
5 2.07 0.03 6 5 2.07 0.13 30
Sub-table mc= 2.3 kg Sub-table mc= 2.4 kg Sub-table mc= 2.5 kg
AroomA [m2] mmax [kg] dm=mc-mmax [kg] VAmin [cm2] AroomA [m2] mmax [kg] dm=mc-mmax [kg] VAmin
[cm2]AroomA [m2] mmax [kg] dm=mc-mmax [kg] VAmin [cm2]
0.5 0.21 2.09 489 0.5 0.21 2.19 512 0.5 0.21 2.29 535
1 0.41 1.89 440 1 0.41 1.99 464 1 0.41 2.09 487
1.5 0.62 1.68 392 1.5 0.62 1.78 415 1.5 0.62 1.88 439
2 0.83 1.47 344 2 0.83 1.57 367 2 0.83 1.67 390
2.5 1.04 1.26 295 2.5 1.04 1.36 319 2.5 1.04 1.46 342
3 1.24 1.06 247 3 1.24 1.16 270 3 1.24 1.26 294
3.5 1.45 0.85 198 3.5 1.45 0.95 222 3.5 1.45 1.05 245
4 1.66 0.64 150 4 1.66 0.74 173 4 1.66 0.84 197
4.5 1.87 0.43 102 4.5 1.87 0.53 125 4.5 1.87 0.63 148
5 2.07 0.23 53 5 2.07 0.33 77 5 2.07 0.43 100
5.5 2.28 0.02 5 5.5 2.28 0.12 28 5.5 2.28 0.22 52
6 2.49 0.01 3
NOTE
For wall-mounted models, the “installation height (H)” is considered to be 1800 mm to be compliant with the IEC 60335-2-40 standard: 2018 clause GG2.
Based on the value of mc(total refrigerant change of the system) use the subtable with the higher value, for instance if mc= 2.05 kg use subtable mc= 2.1 kg
CAUTION
Frequency of Refrigerant Leakage Checks
For unit that contains fluorinated greenhouse gases in quantities of 5 tonnes of CO2 equivalent or more,but of less than 50
tonnes of CO2 equivalent,at least every 12 months, or where a leakage detection system is installed, at least every 24 months.
For unit that contains fluorinated greenhouse gases in quantities of 50 tonnes of CO2 equivalent or more, but of less than 500
tonnes of CO2 equivalentat least every six months, or where a leakage detection system is installed, at least every 12 months.
For unit that contains fluorinated greenhouse gases in quantities of 500 tonnes of CO2 equivalent or more,at
least every three months, or where a leakage detection system is installed,at least every six months.
Only certificated person is allowed to do installation, operation and maintenance.

9
EN
Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
HAZARD
• Before touching electric terminal parts, turn off power switch.
• When service panels are removed, live parts can be easily touched by accident.
• Never leave the unit unattended during installation or servicing when the service panel is removed.
• Do not touch water pipes during and immediately after operation as the pipes may be hot and could burn your
hands. To avoid injury, give the piping time to return to normal temperature or be sure to wear protective gloves.
• Do not touch any switch with wet fingers. Touching a switch with wet fingers can cause electrical shock.
WARNING
• Tear apart and throw away plastic packaging bags so that children will not play with them. Children playing with
plastic bags face danger of death by suffocation.
• Safely dispose of packing materials such as nails and other metal or wood parts that could cause injuries.
• Ask your dealer or qualified personnel to perform installation work in accordance with this manual. Do not in-
stall the unit yourself. Improper installation could result in water leakage, electric shocks or fire.
• Be sure to use only specified accessories and parts for installation work. Failure to use specified parts may
result in water leakage, electric shocks, fire, or the unit falling from its mount.
• Install the unit on a wall that can withstand its weight. Insufficient physical strength may cause the equipment
to fall and possible injury.
• Perform specified installation work with full consideration of strong wind, hurricanes, or earthquakes. Improper
installation work may result in accidents due to equipment falling.
• Make certain that all electrical work is carried out by qualified personnel according to the local laws and regu-
lations and this manual using a separate circuit. Insufficient capacity of the power supply circuit or improper
electrical construction may lead to electric shocks or fire.
• Be sure to install a ground fault circuit interrupter according to local laws and regulations. Failure to install a
ground fault circuit interrupter may cause electric shocks and fire.
• Make sure all wiring is secure. Use the specified wires and ensure that terminal connections or wires are pro-
tected from water and other adverse external forces. Incomplete connection or affixing may cause a fire.
• When wiring the power supply, form the wires so that the front panel can be securely fastened. If the front panel
is not in place there could be overheating of the terminals, electric shocks or fire.
• After completing the installation work, check to make sure that there is no refrigerant leakage.
• Never directly touch any leaking refrigerant as it could cause severe frostbite. Do not touch the refrigerant pipes
during and immediately after operation as the refrigerant pipes may be hot or cold, depending on the condition
of the refrigerant flowing through the refrigerant piping, compressor and other refrigerant cycle parts. Burns or
frostbite are possible if you touch the refrigerant pipes. To avoid injury, give the pipes time to return to normal
temperature or, if you must touch them be sure to wear protective gloves.
• Do not touch the internal parts (pump, backup heater, etc.) during and immediately after operation. Touching the
internal parts can cause burns. To avoid injury, give the internal parts time to return to normal temperature or, if
you must touch them, be sure to wear protective gloves.

10 EN Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
CAUTION
Ground the unit.
Grounding resistance should be according to local laws and regulations.
Do not connect the ground wire to gas or water pipes, lightning conductors or telephone ground wires.
Incomplete grounding may cause electrical shocks.
Gas pipes: Fire or an explosion might occur if the gas leaks.
Water pipes: Hard vinyl tubes are not effective grounds.
Lightning conductors or telephone ground wires: electrical threshold may rise abnormally if struck by a lightning
bolt.
Install the power wire at least 1 meter away from televisions or radios to prevent interference or noise.
(Depending on the radio waves, a distance of 1 meter may not be sufficient to eliminate the noise.)
Do not wash the unit. This may cause electric shocks or fire. The appliance must be installed in accordance with
national wiring regulations. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent
or similarly qualified persons in order to avoid a hazard.
Do not install the unit in the following places:
• Where there is mist of mineral oil, oil spray or vapors. Plastic parts may deteriorate, and cause them to come
loose or water to leak.
• Where corrosive gases are produced. Where corrosion of copper pipes or soldered parts may cause refrigerant
to leak.
• Where there is machinery which emits electromagnetic waves. Electromagnetic waves can disturb the control
system and cause equipment malfunction.
• Where flammable gases may leak, where carbon fiber or ignitable dust is suspended in the air or where volatile
flammables such as paint thinner or gasoline are handled. These types of gases might cause a fire.
• Where the air contains high levels of salt, e.g. near the sea.
• Where voltage fluctuates a lot, such as in factories.
• In vehicles or vessels.
• Where acidic or alkaline vapors are present.
This appliance can be used by children 8 years old and above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge if they are supervised or given instruction on using the unit in a
safe manner and understand the hazards involved. Children should not play with the unit. Cleaning and user main-
tenance should not be done by children without supervision.
Young children should be supervised to ensure that they do not play with the appliance.
If the power cable is damaged, it must be replaced by the manufacturer or the local service agent or a qualified
person.
DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection of such waste separately for
special treatment is necessary. Do not dispose of electrical appliances as municipal waste, use separate collection
facilities. Contact your local government for information regarding the collection systems available. If electrical ap-
pliances are disposed of in landfills or dumps, hazardous substance can leak into the groundwater and get into the
food chain, damaging your health and well-being.
The wiring must be performed by professional technicians in accordance with national wiring regulation and this
circuit diagram. An all-pole disconnection device which has at least 3mm separation distance in all pole and a re-
sidual current device (RCD) with the rating not exceeding 30mA shall be incorporated in the fixed wiring according
to the national rule.
Confirm the safety of the installation area (walls, floors, etc. ) without hidden dangers such as water, electricity, and
gas.
Before installation , check whether the user’s power supply meets the electrical installation requirements of unit
(including reliable grounding , leakage , and wire diameter electrical load, etc. ). If the electrical installation require-
ments of the product are not met, the installation of the product is prohibited until the product is rectified.
When installing multiple air conditioners in a centralized manner, please confirm the load balance of the three-phase
power supply, and multiple units are prevented from being assembled into the same phase of the three-phase power
supply.
The product must be securely fastened. Use reinforcements, if necessary.

11
EN
Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
NOTE
About Fluorinated Gasses
• This air-conditioning unit contains fluorinated gasses. For specific information on the type of gas and the amount, please refer to the relevant label
on the unit itself. Compliance with national gas regulations shall be observed.
• Installation, service, maintenance and repair of this unit must be performed by a certified technician.
• Product uninstallation and recycling must be performed by a certified technician.
• If the system has a leak-detection system installed, it must be checked for leaks at least every 12 months. When the unit is checked for leaks, proper
record-keeping of all checks is strongly recommended.
WARNING
Be sure to adopt adequate measures to prevent the unit from being used as a shelter by small animals. Small ani-
mals making contact with electrical parts can cause malfunction, smoke or fire. Please instruct the customer to keep
the area around the unit clean.
Select an installation site where the following conditions are satisfied:
• Places that are well-ventilated.
• Places where the unit does not disturb next-door neighbors.
• Safe places which can bear the unit’s weight and vibration and where the unit can be installed at an even level.
• Places where there is no possibility of flammable gas or product leak.
• The equipment is not intended for use in a potentially explosive atmosphere.
• Places where servicing space can be well ensured.
• Places where the units’ piping and wiring lengths come within the allowable ranges.
• Places where water leaking from the unit cannot cause damage to the location.
• Places where rain can be avoided as much as possible.
• Do not install the unit in places often used as a work space. In case of construction work (e.g. grinding etc.)
where a lot of dust is created, the unit must be covered.
• Do not place any object or equipment on top of the unit.
• Do not climb, sit or stand on top of the unit.
• Be sure that sufficient precautions are taken in case of refrigerant leakage according to relevant local laws and
regulations.
• Do not install the unit near the sea or in the presence of corrosive gases.
WARNING
• Ask your dealer for installation of the heat pump.
Incomplete installation performed by yourself may result in a water leakage, electric shock, and fire.
• Ask your dealer for improvement, repair, and maintenance.
Incomplete improvement, repair, and maintenance may result in a water leakage, electric shock, and fire.
• In order to avoid electric shock, fire or injury, or if you detect any abnormality such as smell of fire, turn off the
power supply and call your dealer for instructions.
• Never let the indoor unit or the controller get wet.
It may cause an electric shock or a fire.
• Never press the button of the controller with a hard, pointed object.
The controller may be damaged.
• Never replace a fuse with that of wrong rated current or other wires when a fuse blows out.
Using copper wire may break the unit or cause a fire.
• Never use a flammable spray such as hair spray, lacqueror paint near the unit.
It may cause a fire.

12 EN Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
• Do not dispose this product as unsorted municipal waste. Collection of such waste separately for special treat-
ment is necessary.
Do not dispose of electrical appliances as unsorted municipal waste, use separate collection facilities.
Contact your local government for information regarding the connection systems available.
• If electrical appliances are disposed of in landfills, hazardous substance can leak into the groundwater and get
into the food chain, damaging your health and well-being.
• Contact your technical support service to avoid refrigerant leakages.
When the system is installed and operated in a small space, the concentration of refrigerant must be monitored because a
refrigerant leak could lead to a decrease in oxygen and consequently, the risk of suffocation.
• The refrigerant in the heat pump is safe and normally does not leak.
If the refrigerant leaks in the room, contact with a fire of a burner, a heater or a cooker may result in a harmful gas.
• Turn off any combustible heating devices, ventilate the room, and contact the dealer where you purchased the
unit.
Do not use the heat pump until a service person confirms that the portion where the refrigerant leaks is repaired.
CAUTION
• Do not use the heat pump for other purposes.
In order to avoid any quality deterioration, do not use the unit for cooling precision instruments, food, plants, animals or works
of art.
• Before cleaning, be sure to stop the operation, turn the breaker off or pull out the supply cord.
Otherwise, an electric shock and injury may result.
• In order to avoid electric shock or fire, make sure that an earth leak detector is installed.
• Be sure the heat pump is grounded.
In order to avoid electric shock, make sure that the unit is grounded and that the earth wire is not connected to gas or water
pipe, lightning conductor or telephone earth wire.
• Do not operate the heat pump with a wet hand. An electric shock may happen.
• Do not place items which might be damaged by moisture under the indoor unit.
Condensation may form if the humidity is above 80%.
• After a long use, check the unit stand and fitting for damage.
If damaged, the unit may fall and result in injury.
• To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the
heat pump.
• Arrange the drain hose to ensure smooth drainage.
Incomplete drainage may cause flooding
• Never touch the internal parts of the controller.
Do not remove the front panel. Some parts inside are dangerous to touch, and a machine trouble may happen.
• Never do the maintenances work by yourself.
Please contact your local dealer to do the maintenances work.
• Do not allow a child to mount on the unit or avoid placing any object on it.
Falling or tumbling may result in injury.
• Do not operate the heat pump when using a room fumigation - type insecticide.
Failure to observe could cause the chemicals to become deposited in the unit, which could endanger the health of those who
are hypersensitive to chemicals.
• Do not place appliances which produce open fire in places exposed to the air flow from the unit or under the
indoor unit.
It may cause incomplete combustion or deformation of the unit due to the heat.
• Do not install the heat pump at any place where flammable gas may leak out.
If the gas leaks out and stays around the heat pump, a fire may break out.
• The appliance is not intended for use by young children or infirm persons without supervision.
• Young children should be supervised to ensure that they do not play with the appliance.

13
EN
Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
• The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper
tube.
WARNING
Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufac-
turer.
The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames,
an operating gas appliance or an operating electric heater. Do not pierce or burn .
Be aware that refrigerants may not contain an odour.
1.2 Information servicing
1) Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimised. For repair to the
refrigerating system, the following precautions shall be complied with prior to conducting work on the system.
2) Work procedure
Works shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or vapour being present while the work is being performed.
3) General work area
All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. work in confined spaces shall be avoided.
4) Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware
of potentially flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. no sparking, adequately
sealed or intrinsically safe.
5) Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand. Make
sure there is a dry powder or CO2fire extinguisher adjacent to the charging area.
6) No ignition sources
No person carrying out work in relation to a refrigerating system which involves exposing any pipe work that contains or has contained flammable refrigerant shall use
any sources of ignition in such a manner that it may lead to the risk of fire or explosion.
All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during
which flammable refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the equipment is to be surveyed to make
sure that there are no flammable hazards or ignition risks. NO SMOKING signs shall be displayed.
7) Ventilated area
Ensure that the area is in the open or that it adequately ventilated before entering the system or conducting any maintenance work.
A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel
it externally into the atmosphere.
8) Checks to the refrigerating equipment
Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer s maintenance and
service guidelines shall be followed. If in doubt consult the manufacturer s technical department for assistance. The following checks shall be applied to installations
using flammable refrigerants:
• The actual refrigerant charge is in accordance with the room size within which the refrigerant containing parts are installed;
• The ventilation machinery and outlets are operating adequately and are not obstructed;
If an indirect refrigerating circuit is being used, the secondary circuits shall be checked for the presence of refrigerant; marking to the equipment continues to be visible
and legible.
Marking and signs that are illegible shall be corrected;
Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing com-
ponents, unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being so corroded.

14 EN Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
9) Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fault exists that could compromise
safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to
continue operation, and adequate temporary solution shall be used. This shall be reported to the owner of the equipment so all parties are advised.
Initial safety checks shall include:
• That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;
• That there no live electrical components and wiring are exposed while charging, recovering or purging the system;
• That there is continuity of earth bonding.
10) Repairs to sealed components
a) During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers,
etc. If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the
most critical point to warn of a potentially hazardous situation.
b) Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in such a way that the level of protec-
tion is affected. This shall include damage to cables, excessive number of connections, terminals not made to original specification, damage to seals, incorrect fitting
of glands, etc.
• Ensure that apparatus is mounted securely.
• Ensure that seals or sealing materials have not degraded such that they no longer serve the purpose of preventing the ingress of flammable atmospheres. Re-
placement parts shall be in accordance with the manufacturer s specifications.
NOTE
The use of silicon sealant may inhibit the effectiveness of some types of leak detection equipment. Intrinsically safe components do not have to be isolated
prior to working on them.
11) Repairing intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the
equipment in use. Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere. The test apparatus
shall be at the correct rating. Replace components only with parts specified by the manufacturer. Other parts may result in the ignition of refrigerant in the atmosphere
from a leak.
12) Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also
take into account the effects of aging or continual vibration from sources such as compressors or fans.
13) Detection of flammable refrigerants
Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other detector using a
naked flame) shall not be used.
The following leak detection methods are deemed acceptable for systems containing flammable refrigerants system.
Electronic leak detectors shall be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re-calibration.(Detection equipment shall
be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant. Leak detection equipment shall be
set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed and the appropriate percentage of gas (25% maximum) is confirmed.
Leak detection fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the
refrigerant and corrode the copper pipe-work.
NOTE
Examples of leak detection flu ids are
• bubble method
• fluorescent method agents
If a leak is suspected, all naked flames shall be removed/extinguished.
If a leakage of refrigerant is found which requires brazing, ali of the refrigerant shall be recovered from the system , or isolated (by means of shut off valves) in a part
of the system remote from the leak.
Removal of refrigerant shall be according to Clause DD.9.
14) Removal and evacuation
When you enter the refrigerant circuit to carry out repairs for any other reason, conventional procedures must be used. It is, however, important to follow best practices
because flammability is a hazard. The following procedure shall be adhered to:
• Remove refrigerant;
• Purge the circuit with inert gas;
• Evacuate;
• Purge with inert gas;
• Open the circuit by cutting or brazing.

15
EN
Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
The refrigerant charge shall be recovered into the correct recovery cylinders. For appliances containing flammable refrigerants, the system shall be purged with
oxygen-free nitrogen to render the appliance safe for flammable refrigerants . This process may need to be repeated several times . Compressed air or oxygen shall
not be used for purging refrigerant systems.
For appliances containing flammable refrigerants, refrigerants purging shall be achieved by breaking the vacuum in the system with oxygen-free nitrogen and continu-
ing to fili until the working pressure is achieved, then venting to atmosp here, and finally pulling down to a vacuum . This process shall be repeated until no refrigerant
is within the system. When the final oxygen-free nitrogen charge is used, the system shall be vented down to atmospheric pressure to enable work to take place. This
operation is absolutely vital if brazing operations on the pipe-work are to take place.
Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and that ventilation is available.
15) Charging procedures
In addition to conventional charging procedures, the following requirements shall be followed:
• Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimize the
amount of refrigerant contained in them.
• Cylinders shall be kept in an appropriate position according to the instructions.
• Ensure that the refrigerating system is earthed prior to charging the system with refrigerant.
• Label the system when charging is complete(if not already).
• Extreme care shall be taken not to overfill the refrigerating system.
Prior to recharging the system it shall be pressure tested with OFN. The system shall be leak tested on completion of charging but prior to commissioning. A follow up
leak test shall be carried out prior to leaving the site.
16) Decommissioning
Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that
all refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken. In case analysis is required prior to re-use of
recovered refrigerant. It is essential that electrical power is available before the task is commenced.
a) Become familiar with the equipment and its operation.
b) Isolate system electrically
c) Before attempting the procedure ensure that:
• Mechanical handling equipment is available, if required, for handling refrigerant cylinders;
• All personal protective equipment is available and being used correctly;
• The recovery process is supervised at all times by a competent person;
• Recovery equipment and cylinders conform to the appropriate standards.
d) Pump down refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
f) Make sure that cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine and operate in accordance with manufacturer s instructions.
h) Do not overfill cylinders. (No more than 80% volume liquid charge).
i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all
isolation valves on the equipment are closed off.
k) Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.
17) Labelling
Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and signed. Ensure that there are labels on
the equipment stating the equipment contains flammable refrigerant.
18) Recovery
When removing refrigerant from a system, either for service or decommissioning, it is recommended good practice that all refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct numbers of cylin-
ders for holding the total system charge are available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant(i.e
special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure relief valve and associated shut-off valves in good working order.
Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of
flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order.
Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order,
has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer
if in doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant Waste Transfer Note arranged. Do not mix
refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does
not remain within the lubricant. The evacuation process must be carried out prior to returning the compressor to the suppliers. Only electric heating to the compressor
body shall be employed to accelerate this process. When oil is drained from a system, it shall be carried out safely.

16 EN Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
20) Transportation, marking and storage for units
• General. The following information is provided for units that use flammable refrigerants.
• Transport of equipment containing flammable refrigerants. Attention is drawn to the fact that additional transportation regulations may exist with respect to equip-
ment containing flammable gas. The maximum number of pieces of equipment or the configuration of the equipment permitted to be transported together will be
determined by the applicable transport regulations.
• Marking of equipment using signs. Signs for similar appliances used in a work area are generally addressed by local regulations and give the minimum require-
ments for the provision of safety and/or health signs for a work location. All required signs are to be maintained and employers should ensure that employees
receive suitable and sufficient instruction and training on the meaning of appropriate safety signs and the actions that need to be taken in connection with these
signs. The effectiveness of signs should not be diminished by too many signs being placed together. Any pictograms used should be as simple as possible and
contain only essential details.
• Disposal of equipment using flammable refrigerants. See national regulations.
• Storage of equipment/appliances. The storage of the appliance should be in accordance with the applicable regulations or instructions, whichever is more
stringent.
• Storage of packed (unsold) equipment. Storage package protection should be constructed in such a way that mechanical damage to the equipment inside the
package will not cause a leak of the refrigerant charge. The maximum number of pieces of equipment permitted to be stored together will be determined by local
regulations.
2. GENERAL FEATURES
2.1 Presentation of the system
> MAIN FEATURES:
• The hybrid heat pump family combines heat pump technology and the condensation boiler with the production of instant DHW in a single compact product.
• It is the ideal solution for replacing existing old boilers even on high temperature systems with radiators.
• The compact size, similar to that of a wall-hung boiler, makes it easier to replace without significant loss of space or the need for major restructuring work.
• By running the boiler or heat pump as the climatic conditions vary, the internal electronics optimise the output of the system by constantly operating in the most
economic and efficient mode possible.
• When the heat pump is operating in heating or cooling mode, the boiler can produce domestic hot water at the same without affecting with the heat pump opera-
tion, thus maximising the comfort of both services.
• If the heat pump is partially or totally blocked, the boiler can operate independently in heating mode and produce domestic hot water.
• It consists of an external inverter unit, available with a choice of 4 different powers, associated with an indoor condensation unit with an integrated hydronic module
to manage the cooling circuit.
• A highly versatile system which can operate in very cold climate conditions (external air up to -25°C).
• The split cooling circuit avoids the risk of freezing for outdoor installations in very cold climates.
• The user interface consists of a digital controller built into the indoor unit, equipped with a large display and simple setting commands.
• Wall flue gas exhaust in the cases pertaining to Italian Leg. Decree no. 102 of 4 July 2014.
> INDOOR UNIT FEATURES
• Very robust and suitable for replacements even in highly critical and resistant systems.
• Combustion module with a high modulation range (1:10) and extra-thick stainless steel heat exchanger with larger channels to maintain high efficiency even on
old oxidised and soiled systems.
• M.G.R: Methane, LPG, Propane-air Ready, using a simple configuration, the outdoor unit can run on natural gas, LPG and a propane-air mixture without the use
of any additional conversion kits.
• MC2: Multi Combustion Control, combustion system with patented gas-adaptive technology for improved adaptability of use to variations in the gas supply condi-
tions (e.g. pressure fluctuations or drops).
• F.P.S: Flue gas protection system. The standard flue gas check valve offers easy connection to pressurised collective flue systems
• Particularly suited to operating in flues requiring “heavy-duty” pipes thanks to approval for operation with flue gas exhaust pipes with a diameter of 50mm.
• Can be combined with pre-heating systems for DHW.
• Installation site: also for outdoor use in partially protected areas up to -5°C as standard.
• Methane/LPG/Propane-air transformation free when checking the product and activating the warranty, to be requested from the authorised support centre.
> OUTDOOR UNIT FEATURES
• Approved for external use in completely exposed site.
• Refrigerant circuit contained in a compartment sheltered from the air flow to facilitate maintenance operations
• Reduced inrush current thanks to Inverter technology
• Compressor with twin rotary DC INVERTER motor equipped with crankcase oil heater, positioned on anti-vibration rubber supports and wrapped in a double layer of sound-
absorbing material to minimize vibrations and noise
• DC inverter compressor that allows to modulate the capacity from 30 to 120% of the rated capacity
• Electronic biflow expansion valve
• Reverse cycle valve
• Axial fans with brushless DC motor complete with safety protection grilles
• Finned coil consisting of copper pipes and hydrophilic aluminium fins with anti-corrosion treatment
• The circuit is controlled by temperature probes and pressure transducers and protected by high and low pressure switches.
• All the units are equipped with variable speed control of the fans which allows operation with low external temperatures in cooling and high external temperatures in heating.
• External air temperature probe pre-installed on the unit.
> OUTDOOR UNIT ACCESSORIES
• AVG - Rubber antivibration dampers.
> SYSTEM ACCESSORIES
TP -Temperature probe: this is a probe that can be used to expand the control functions of the unit.
In fact, it can be used for:
• management of a 2-zone kit (direct and mixed) external to the unit for reading the mixed zone flow
• solar thermal management for reading the temperature of the solar collector

17
EN
Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
2.2 Components supplied with the indoor unit
Description Component
Q.ty
Indoor unit 6 Indoor unit 10
Use, maintenance and installation manual (this manual) 1 1
Energy label
Y IJA
IE IA
RVL-IPLUS 5
A
63 dB
7
5
kW
5
5
5
kW
5
811/20132015
B
C
D
E
F
G
A
35°C
A
A
++
+
+
55°C
+
A
++
-
dB
1 1
Perpendicular tap with filter (system return) 1 1
Perpendicular tap (system delivery) 1 1
Brass adaptor 3/8” SAE - 1/4” SAE 1 -
Wall fastening bracket
-1 1
Boiler condensate drainage siphon and pipe
-1 1
2.3 User interface
The user interface consists of a digital controller built into the indoor unit which
allows you to control:
• HEATING AND COOLING If the unit is activated in heating or cooling mode,
it works by modulating the compressor frequency to maintain the produced
water temperature at the set point value set by the controller.
• HEATING WITH BOILER. It can be activated in integration or replacement of
the heat pump based on the set parameters. The board will also activate the
boiler if the heat pump does not work.
• SILENT MODE. If active, it involves a reduction of the maximum compressor
frequency and fan speed to reduce the noise emitted and the power absorbed
by the unit. There are 2 levels of silencing. Through time programming, it is
possible to define the desired silencing level for 2 daily time bands (e.g. at
night).
• ON / OFF via an external contact. The unit can be activated and deactivated
(e.g. zone thermostat / remote switch) via an external contact: in this case the
unit will operate in the way set via the controller keyboard.
• HEATING / COOLING via external contacts. The unit can be activated and
deactivated in cooling and heating mode via 2 external contacts (e.g. zone
thermostat that manages the request for cooling and heating / remote switch).
• ECO. Possibility of warmly defining the time bands and relative setpoint for
the ECO mode.
• WEEKLY HOURLY PROGRAMMING. This allows differentiated hourly pro-
gramming for each day of the week, defining the mode (COOL/WARM/DHW)
and operating setpoints for each time slot.
• ANTIFREEZE PROTECTION. It is activated if the water temperature meas-
ured by the temperature probes present in the indoor unit falls below 4°C: it
provides for the activation of the internal circulator and possibly the heat pump
in heating mode and/or the boiler.
• MANAGEMENT OF UP TO 2 ZONES (1 mixed and 1 direct). The unit is
able to manage the pumps of both zones and. for the mixed zone only, the
mixing valve and the water delivery temperature probe.
• SMART GRID INPUT. The unit is equipped with 1 digital contact to manage
an input from the electricity grid. Working logic:
• If the smart grid input is closed, the unit functions normally.
• If the photovoltaic input is open and the smart grid input is open, the unit
deactivates the DHW mode and can operate in cooling / heating mode
for a defined period (which can be set via a parameter), then it will be
deactivated.
• CURRENT LIMITATION BY PARAMETER.
• REMOTE CONTROL OF THE UNIT VIA APP (available for IOS and An-
droid).
• DETAILED ERROR DIAGNOSTICS WITH HISTORICAL ALARMS.
• DISPLAY OF ALL OPERATING PARAMETERS.
25 °C
45 °C
fig. 2 - user interface

18 EN Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
2.4 Accessories
2.4.1 Hydraulic kit
The hydraulic kit is available on request (code 012050W0 consisting of a gas tap, water inlet tap, pipes and fittings) for the hydraulic connection of the wall-mounted
indoor unit.
A
A
fig. 3 - Hydraulic kit A
A
25
°C
45
°C
fig. 4 - Assembled hydraulic kit
Hydraulic kit accessory
AThese two valves are not part of the kit since they are part of the standard supply with the indoor unit.
2.4.2 Fittings cover kit
The fittings cover kit is available on request (code 016009X0) to add an aesthetic cover of the wall hydraulic connections. The kit consists of a galvanised metal panel
in the same colour as the unit, to be fastened with 4 screws under the indoor unit
fig. 5 - Fittings cover kit
25
°C
45
°C
fig. 6 - Fittings cover kit assembled
Fittings cover kit accessory

19
EN
Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
3. TECHNICAL DATA AN PERFORMANCE
3.1 Heat pump technical data
-Models 4 6 8 10 UM
A7W35
Thermal power nom 4.20 6.35 8.40 10.0 kW
Power absorbed nom 0.82 1.28 1.63 2.02 kW
COP 5.10 4.95 5.15 4.95 W/W
Water ow rate 722 1092 1445 1720 l/h
External static pressure 81 76 61 47 kPa
A7W45
Heating capacity nom 4.30 6.30 8.30 10.0 kW
Power absorbed nom 1.13 1.70 2.16 2.67 kW
COP 3.80 3.70 3.85 3.75 W/W
Water ow rate 740 1084 1428 1720 l/h
External static pressure 81 76 62 47 kPa
A7W55
Heating capacity nom 4.40 6.00 7.50 9.50 kW
Power absorbed nom 1.49 2.03 2.36 3.06 kW
COP 2.95 2.95 3.18 3.10 W/W
Water ow rate 473 645 806 1021 l/h
External static pressure 83 81 80 77 kPa
A35W18
Cooling capacity nom 4.50 6.50 8.30 9.90 kW
Power absorbed nom 0.82 1.35 1.64 2.18 kW
EER 5.50 4.80 5.05 4.55 W/W
Water ow rate 774 1118 1428 1703 l/h
External static pressure 80 75 62 48 kPa
A35W7
Cooling capacity nom 4.70 6.50 7.45 8.20 kW
Water ow rate nom 1.36 2.17 2.22 2.52 kW
EER 3.45 3.00 3.35 3.25 W/W
Water ow rate 808 1118 1281 1410 l/h
External static pressure 80 75 68 63 kPa
The values refer to a unit without any optionals or accessories.
Data declared according to EN 14511:
EER (Energy Efficiency Ratio) = ratio of the total cooling capacity to the effective power input of the unit
COP (Coefficient Of Performance) = ratio of the total heating capacity to the effective power input of the
unit
A7W35 = source: air in 7°C d.b. 6°C w.b. / system: water in 30°C out 35°C
A7W45 = source: air in 7°C d.b. 6°C w.b. / system: water in 40°C out 45°C
A7W55 = source: air in 7°C d.b. 6°C w.b. / system: water in 47°C out 55°C
A35W18 = source: air in 35°C d.b. / system: water in 23°C out 18°C
A35W7 = source: air in 35°C d.b. / system: water in 12°C out 7°C
Outdoor unit technical data 4 6 8 10 UM
Power supply 220/240-1-50 V-ph-Hz
Type of compressor Twin Rotary DC -
No. compressors / No. refrigeration circuits 1 / 1 no.
Exchanger type nned coil -
Fan type DC axial -
No. of fans 1 no.
Refrigerant ttings / liquid line 1/4” SAE / Ø 6.35 3/8” SAE / Ø 9.52 -
Refrigerant ttings / gas line 5/8” SAE / Ø 15.88 -
Type of refrigerant R32 type
GWP 675 kg- CO2 eq.
Factory refrigerant charge * 1.5 / 1.01 1.65 / 1.11 kg / t- CO2 eq.
Refrigeration lines (max length / max
vertical height difference)
30 / 20 m
SWL - Sound power
level in heating **
A7W35 55 57 59 60 dB(A)
A7W55 56 58 59 60 dB(A)
Max 60 61 61 62 dB(A)
Sil. 1 56 56 57 58 dB(A)
Sil. 2 53 53 55 55 dB(A)
SWL - Sound power
level in cooling *
A35W18 56 58 59 60 dB(A)
A35W7 56 58 59 60 dB(A)
Max 60 61 61 62 dB(A)
Sil. 1 55 57 57 58 dB(A)
Sil. 2 52 54 54 54 dB(A)
Maximum input current 12 14 16 17 A
Net weight 58 77 kg
Weight of packaged unit 65 94 kg
* The factory refrigerant charge allows a maximum length of the refrigeration lines of 15 metres. The maximum length of the refrigeration lines is 30 meters: in this case it is necessary to integrate the charge during
installation.
**: SWL = Sound power levels, with reference to 1x10-12 W with unit operating in conditions:
A7W35 = source: air in 7°C d.b. 6°C w.b. / system: water in 30°C out 35°C.
A7W55 = source: air in 7°C d.b. 6°C w.b. / system: water in 47°C out 55°C.
A35W18 = source: air in 35°C d.b. / system: water in 23°C out 18°C
A35W7 = source: air in 35°C d.b. / system: water in 12°C out 7°C
Max = at maximum conditions in heating / cooling mode
Sil. 1 = if silent level 1 active in heating / cooling mode
Sil. 2 = if silent level 2 active in heating / cooling mode
The Total sound power level in dB(A) is measured in accordance with standard ISO 9614.

20 EN Cod. 3542B250 - Rev. 00 - 02/2022
OMNIA S HYBRID C 3.2
Indoor unit technical data 06 / 10 UM
Power supply 220/240-1-50 V-ph-Hz
Exchanger type Brazed stainless steel plate type -
Type of pump Electronic circulator (8 mca) -
System expansion tank volume 10 l
System water safety valve calibration 3bar
System hydraulic ttings 1” GAS F -
DHW hydraulic ttings 3/4” GAS F -
Refrigerant ttings / liquid line *** 3/8” SAE / Ø 9.52 -
Refrigerant ttings / gas line 5/8” SAE / Ø 15.88 -
Minimum system water content 15 l
Internal backup heater 3 kW
System temperature (min-max) 5 - 65 °C
System pressure (min-max) 1 - 3 bar
SWL - Sound power level indoor unit 39 39 39 39 dB(A)
Max absorbed current 1A
Net weight 43 kg
Weight when working **** 45 kg
Weight of packaged unit 45 kg
*** For matching with external units mod. 4-6, an adapter from 3/8” SAE to 1/4” SAE is supplied for the liquid line Ø 6.35.
**** Weight refers to basic unit without accessories
3.2 ERP data
NOTE: Efficiency class calculated according to the European regulation 811/2013. The values refer to a unit without any optionals or accessories.
Model 4 6 8 10 UM
Efficiency class in
heating
low temperature (produced water 35°C) 187 191 200 201 ηs (%)
A+++
class
average temperature (produced water 55°C) 128 137 131 136 ηs (%)
A++
class
SEER produced water 7°C 4.99 5.34 5.83 5.98 W/W
produced water 18°C 7.77 8.21 8.95 8.78 W/W
3.3 Heat pump operational limits
Operation range by heat pump with possible
limitation and protection.
-
-
-
Produced water temperature °C
Produced water temperature °C
External air temperature °C
External air temperature °C
WARM MODECOOL MODE
With IBH (system electric heater) installed.
Operation range by heat pump with possible limita-
tion and protection.
Maximum inlet water temperature line for heat
pump operation.