Fondital PROCIDA AWM X6 User manual

IST 03 J 046 - 02
PROCIDA AWM
X6 - X8 - X10 - X12 - X14 - X16
(single-phase)
T10 - T 12 - T14 - T16
(three-phase)
INSTALLATION MANUAL
MONOBLOC AIR/ WATER HEAT PUMP
EN
Translation of the
original instructions
(in Italian)
Thank you for choosing a heat pump by Fondital. Carefully read this Manual before using
the unit and keep it for future reference.

2
For users
Thank you for choosing a product by Fondital. In order to use the product correctly, please carefully read this instruction manual before
installation and use. To achieve the intended operation of the air conditioner, please follow the recommendations below for the proper
installation and use of the product:
1. Installation, use and maintenance of this appliance must be carried out by specially trained technical personnel. During operation,
the safety instructions on labels, in the User manual and other documents must be strictly complied with. This appliance is not
intended for use by persons (including children) with physical, sensory and cognitive impairments, or lacking appropriate experi-
ence and knowledge, unless they are supervised or instructed for its use by persons responsible for their safety. Children should
be supervised to ensure that they do not play with the appliance.
2. This product underwent a strict inspection and operating tests before leaving the factory. In order to avoid damage due to improp-
er disassembly and inspection, which could a󰀨ect the normal operation of the unit, do not disassemble it yourself. If necessary,
contact our company's authorised service centre.
3. Our company shall not be liable for personal injury, loss or damage to property caused by improper use, including improper
installation and testing procedures, unnecessary maintenance, violation of applicable national laws, regulations and industry
standards, and failure to follow this instruction manual.
4. If the product is faulty and can not be used, please contact our service centre as soon as possible and provide the following
details.
» Contents of the product identication plate (model number, cooling/heating capacity, product code, date of leaving the factory).
» Malfunction condition (specify the situations before and after the error occurs).
5. All drawings and data in this instruction manual are provided for reference only. The product is subject to continuous improve-
ments and innovations aimed at optimising its quality. We reserve the right to make any necessary changes to the product at any
time for commercial or production reasons, as well as to revise the contents of the manual without prior notice.
6. The right of nal interpretation of this instruction manual lies with Fondital Spa.

3
1. Diagram of the operating principle ............................................13
2. HEATING AND COOLING AND DHW WITH CIRCUIT BREAKER ...................14
3. HEATING AND COOLING ..................................................16
4. HEATING AND COOLING AND DHW WITH COMPACT WATER HEATER ............ 18
5. Unit operating principle .....................................................20
6. Name ..................................................................21
7. Installation example .......................................................23
8. Key components ..........................................................25
9. Guidelines for monobloc unit installation .......................................27
9.1 Instructions for the installation.............................................................................................................................. 27
9.2 Monobloc unit installation..................................................................................................................................... 27
10. Hydraulic unit installation ...................................................32
10.1 Useful head at outdoor unit outlet ........................................................................................................................ 32
10.2 Water volume and pressure in the expansion tank .............................................................................................. 33
10.3 How to calculate expansion tank lling pressure.................................................................................................. 33
10.4 Selecting the expansion tank ............................................................................................................................... 34
11. Remote ambient temperature sensor ..........................................35
12. Thermostat with voltage output...............................................36
13. Wired control (CONTROL PANEL) ............................................38
14. 2-way valve ..............................................................39
15. Three-way valve ..........................................................40
16. Aux. thermal unit ..........................................................41
17. Optional electric heater .....................................................42
18. Door control unit ..........................................................43
19. Refrigerant lling and draining ...............................................43
20. Installing a sealed storage tank ..............................................45
20.1 Installation sizes ................................................................................................................................................... 45
20.2 Connection of the hydraulic system ..................................................................................................................... 47
20.3 Water quality requirements .................................................................................................................................. 48
20.4 Electrical connection ............................................................................................................................................ 48
21. Wiring diagram ...........................................................50
21.1 Control board........................................................................................................................................................ 50
21.2 Electrical connections........................................................................................................................................... 61
22. Commissioning ...........................................................72
22.1 Checks before start-up ......................................................................................................................................... 72
22.2 Operation test....................................................................................................................................................... 73
23. Operation and routine maintenance ...........................................74
23.1 Recovery .............................................................................................................................................................. 75
23.2 Decommissioning................................................................................................................................................. 76
23.3 Precautions before seasonal use ......................................................................................................................... 76
24. Water piping layout ........................................................77

4
Safety warnings (to be strictly adhered to)
WARNING: failure to follow these instructions could result in serious damage to the unit or injury to persons.
NOTE: failure to follow these instructions could result in minor or moderate damage to the unit or injury to persons.
This sign indicates that operation must be prohibited. Incorrect operation may cause serious damage or be life-threatening.
This sign indicates that components must be inspected. Incorrect operation can cause damage to people or property.
NOTE
Upon receipt of the unit, check its appearance, verify the model and parts supplied, and ensure that everything is as ordered.
The design and installation of the unit must be carried out by authorised personnel, in accordance with current laws and regulations
and with these instructions.
After installation, the unit may only be put into operation if there are no problems to check.
After normal use, carry out the specied periodic cleaning and maintenance procedures to ensure trouble-free operation and long life
of the unit.
If the power cable is damaged, it must be replaced by the manufacturer, its service agent or similarly qualied persons in order to
avoid danger.
The unit must be installed in accordance with national wiring regulations.
This product is a general-purpose air conditioner and must not be installed in the presence of corrosive, explosive, ammable or pol-
luting substances because use under such conditions would cause malfunctions, a shorter service life, re hazard and risk of serious
injury to persons. Special air conditioners must be used under the above-mentioned conditions.
This marking means that the product must not be disposed of as household waste in EU countries. Recycle the prod-
uct with a sense of responsibility to promote sustainable reuse of resources and avoid any damage to the environment
or human health resulting from uncontrolled disposal of waste. To return the used appliance, rely on sorted waste
systems or contact the dealer where appliance was purchased. The dealer could take the product and recycle it in an
environment-friendly manner.
R32:675

5
WARNING
In the event of anomalies, such as a smell of smoke, immediately switch o󰀨
the unit and contact a service centre.
If the anomaly persists, the unit may be damaged and an electric shock or
re may occur.
Do not operate the unit with wet hands.
Non-compliance could result in an electric shock hazard.
Before installation, check that the mains voltage corresponds to the values
indicated on the unit's rating plate and that the capacity of the electrical sys-
tem, power cable or electrical outlet is compatible with the unit's power re-
quirements.
A special power supply circuit must be used to avoid re hazards.
Do not use multiple sockets or extension cords for connecting the cables.
When the unit is left unused for a long period, unplug it and empty the indoor
unit and the water storage tank.
Non-compliance may result in the dust building up causing a risk of overheat-
ing, re or (in winter) freezing of the storage tank or coaxial heat exchanger.
Do not damage the electrical cable or use a cable that does not comply with
the specications.
Non-compliance may result in overheating or re.

6
Before cleaning the unit, disconnect it from the mains.
Non-compliance could result in risk of an electric shock or damage to prop-
erty.
The power supply must adopt a special circuit with a residual current circuit
breaker and must have su󰀩cient capacity.
The user may not replace the power cable socket without the manufacturer's
prior consent. Electrical connections must be carried out by a professional.
Ensure that the unit is properly connected to ground and do not change the
way it is connected to ground.
Ground: the unit must have a reliable ground connection! The ground cable
must be connected to a building protection device.
In the absence of such a device, ask a qualied technician to install one. It
is also recommended not to connect the ground cable to gas pipes, water
pipes, drain pipes or other improper items not approved by a professional
technician.
Do not insert foreign objects into the outdoor unit to avoid risk of damage. Do
not insert your hands into the air outlet of the outdoor unit.
Do not attempt to repair the unit yourself.
Improper repair may cause re or electric shock. For this reason, it is recom-
mended to contact a service centre for repairs.

7
Do not climb on the unit or place objects on it.
This could create a falling hazard for people and objects.
Do not obstruct the air inlet and outlet areas of the unit.
Obstructions could reduce e󰀩ciency or cause the unit to shut down or create
a re hazard.
Keep pressurised sprays, gas cylinders and other similar objects at least 1
m away from the unit.
Fire or explosion hazards may result.
Check that the installation support is su󰀩ciently stable.
If it is damaged, there is a risk of the unit falling and injuring persons.
The unit should be installed in a well-ventilated place to reduce energy con-
sumption.
When the storage tank is empty, the unit must not be operated.

8
WARNING
Do not use any means other than those recommended by the manufacturer to speed up the defrosting process or for cleaning. If a
repair is necessary, contact the nearest authorised service centre. Repairs carried out by unqualied personnel could be dangerous.
The appliance must not be placed in a room containing continuously operating ignition sources (e.g. open ames, gas appliances or
electric heaters). Do not pierce or burn.
The appliance must be installed, used and stored in a room having an area of at least Xm (for the measure of space X, refer to table
"a" in the section "Safety precautions for the use of ammable refrigerants").
The appliance contains the ammable gas R32. For repairs, strictly follow the manufacturer's instructions. Note that refrigerants are
odourless. Read the manual for the specic product.
If the xed appliance is not equipped with a mains lead with a plug, or other means of disconnection from the mains supply which
ensures a separation between the contacts in each pole and is capable of completely disconnecting the power supply under category
III overvoltage conditions, the instructions state that such a means of disconnection must be incorporated into the xed wiring in ac-
cordance with the regulations in force on electrical connections.
The appliance is suitable for use by children aged 8 years and over and by persons with physical, sensory and cognitive impairments,
or lacking appropriate experience and knowledge exclusively when they are adequately supervised or have been instructed in the
safe use of the appliance and understand the associated dangers. Children should be supervised to ensure that they do not play with
the appliance. Cleaning and maintenance must not be carried out by children without proper supervision.
The appliance must be located in a well-ventilated room whose dimensions correspond to those specied for operation.
The appliance must not be stored in a room containing open ames (e.g. gas appliances) and ignition sources (e.g. electric stoves)
that are continuously in operation.
The appliance must be stored in such a way as to prevent any mechanical damage.

9
NOTE
The appliance contains the ammable gas R32.
It is recommended to read the user manual before using the appliance.
A special refrigerant circulates in the system to obtain the function of air conditioner. The refrigerant used is R32 uoride, which un-
dergoes a special cleaning treatment. The refrigerant is ammable and odourless. Moreover, it can lead to explosion hazards under
certain conditions. However, the ammability of the refrigerant is very low. Ignition is only possible with re.
Compared to commonly used refrigerants, R32 is non-polluting and does not damage the ozone layer. This means that it also has a
lower greenhouse e󰀨ect. R32 has excellent thermodynamic characteristics that result in very high energy e󰀩ciency. As a result, the
units require a lower lling level.
Before installation, check that the electrical power ratings at the designated location correspond to the specications on the unit rating
plate and check the reliability and safety of the electrical connection.
The unit must be connected to the mains by means of an omnipolar circuit breaker suitable for category III overvoltages.
Before use, check that the electrical cables and water pipes are correctly connected to avoid water leaks, risk of electrocution and
the like.
Do not operate the unit with wet hands. Children must not be allowed to use it.
In the instructions, the on/o󰀨 switching descriptions refer to the use of the unit on/o󰀨 button. The power supply is cut by disconnecting
the unit from the mains.
Do not expose the unit directly to the corrosive conditions of environments containing water and humidity. Do not operate the unit with
empty water storage tank. The air outlet/inlet openings of the unit must not be obstructed by any objects.
When the unit is not in use, the water in the unit and in the pipes must be drained to prevent the storage tank, pipes and water pump
from cracking due to frost.
Never use sharp objects to press the button. Doing so could damage the manual control unit. Do not use other wires instead of the
special communication line of the unit. Doing so could damage the control elements. Never clean the manual control unit with ben-
zene, thinners or other chemicals to avoid discolouration of the surfaces and damage to the elements. Clean the unit using a cloth
soaked in mild detergent. Gently clean the display screen and connecting parts to avoid discolouration.
The power cable must be separated from the communication line.
Work on the refrigerant circuit must only be carried out by persons with valid certication from an accredited body stating that they can
handle refrigerants safely, in accordance with the specications in force.
Maintenance work on the appliance must be carried out strictly in accordance with the manufacturer's instructions. Maintenance and
repair work requiring the assistance of other qualied personnel must be carried out under the supervision of the person competent
to handle ammable refrigerants.

10
Maximum and minimum water temperatures
Function Minimum water temperature Maximum water temperature
Cooling 7°C 25°C
Central heating 20°C 60°C
Water heating 40°C 80°C
Maximum and minimum water pressure values
Function Minimum water pressure Maximum water pressure
Cooling
0.05 MPa 0.25 MPaCentral heating
Water heating
Maximum and minimum water pressure values at inlet.
Function Minimum water pressure at inlet Maximum water pressure at inlet
Cooling
0.05 MPa 0.25 MPa
Central heating
Water heating
The external static pressures with which the appliance has been tested are stated (only additional heat pumps and appliances with
additional heaters). If the power cable is damaged, it must be replaced by the manufacturer, its service agent or an equally qualied
person in order to avoid danger.
The appliance is intended to be connected to the water mains permanently and not by means of connecting pipes.
If you have any questions, please contact your local dealer, an authorised service centre, a branch o󰀩ce or our company directly.

11
NOTE
If hot work is to be carried out on cooling equipment or any associated components, a suitable re extinguisher must be kept at hand.
Have a dry powder or CO2 re extinguisher near the loading area.
Any electrical components installed as replacement must be suitable for the purpose and to the appropriate specications. The man-
ufacturer's maintenance and service instructions must be followed under all circumstances. If in doubt, consult the manufacturer's
technical department.
The following checks must be carried out on installations using ammable refrigerants:
• the lling volume must be suitable for the cubic capacity of the room in which the components containing the refrigerant are in-
stalled;
• ventilation devices and openings must open properly and be free of obstructions;
• if an indirect cooling circuit is used, check for the presence of refrigerant in the secondary circuit;
• the unit markings must always be visible and legible. Markings and signs that become illegible must be rectied;
• cooling pipes or components must be installed in a location with a low probability of exposure to substances that can corrode re-
frigerant-containing components, unless the components are manufactured from materials that are inherently corrosion-resistant
or adequately protected against corrosion.
Repair and maintenance procedures for electrical components must include initial safety checks and component inspection proce-
dures. If a defect is found that may create a safety hazard, the power supply to the circuit must be interrupted until the problem is
satisfactorily resolved. If the fault can not be rectied immediately but the equipment must continue to be used, a suitable temporary
solution must be adopted. This situation must be reported to the owner of the equipment so that all parties are aware of it.
Initial safety checks: check that capacitors are discharged. This procedure must be carried out in a safe manner to avoid the possibility
of sparks. Make sure that there are no live components or wires exposed when lling, restoring or bleeding the system. Make sure
that there are no interruptions in the grounding.

12
When repairing sealed components, it is necessary to disconnect all electrical devices from the equipment before removing sealed
covers, etc. If it is absolutely necessary to have a power supply during the intervention, a permanently operating leak detection device
must be set up at the most critical point to signal potentially dangerous situations.
Particular attention must be paid to the following to ensure that, during work on electrical components, the housing does not undergo
any alterations that compromise the level of protection. These may include damage to cables, an excessive number of connections,
the use of terminals that do not conform to the original specications, damage to seals and gaskets, incorrect gland assembly, etc.
Ensure that the equipment is securely mounted.
Ensure that the gaskets or sealing materials have not deteriorated to such an extent that they can no longer prevent the ingress of
ammable atmospheres. Spare parts must comply with the manufacturer's specications.
NOTE: the use of silicone sealants may reduce the e󰀨ectiveness of some types of leak detection equipment.
Intrinsically safe components do not need to be isolated before work is carried out.
Before applying permanent inductance or capacity loads to the circuit, make sure that this operation does not cause the allowed volt-
age and current values for the device in use to be exceeded.
Intrinsically safe components are the only ones which can be serviced when live in the presence of a ammable atmosphere. The test
equipment must have the correct nominal characteristics.
When replacing components, use only those parts specied by the manufacturer. Non-approved components could cause ignition of
the refrigerant released into the atmosphere.
Check that the wiring is not exposed to wear, corrosion, excessive pressure, vibration, sharp edges or other adverse environmental
factors. The inspection should also take into account the e󰀨ects of ageing or continuous vibration from compressors, fans or other
similar sources.
The use of potential ignition sources to search for or detect refrigerant leaks is forbidden under any circumstances. The use of halogen
lights (or other open ame detection systems) is not permitted.
The equipment must be labelled to indicate that it has been decommissioned and refrigerant drained. The labels must be dated and
signed. Ensure that there are labels on the appliance stating that it contains ammable refrigerant gas.

13
Diagram of the operating principle
1. Diagram of the operating principle
Floor temp.
Mixing valve
Water pump
Solar panel temp.
Flow switch
Solar plant return temp.
Solar system
Heat pump system
2-way valve 1
Water temp.
Storage tank
Three-way valve 2
Solar plant flow temp.
Three-way valve 1
Aux. thermal unit
Water pump
Filter
Expansion tank
Automatic drain valve
Safety valve
Water outlet temp.
Flow switch
Pool return temp.
Water flow temp.
Flow switch
Liquid temp.
Gas temp.
Water pump
PHE inlet temp.
Pool flow temp.
PHE outlet temp.
Pool temp.
Defrost Temp.
Ambient Temp.
Fan
Tube-fin heat exchanger Chassis electric heat.
Suction Temp.
Gas-liquid separator
Compressor
Low pressure switch for heating
Low pressure switch for cooling
Discharge Temp.
Compressor electric heater
Optional sensor
High pressure sensor
4-way valve
High pressure switch
Economizer
Storage tank electric heat.
Note: the pool, the solar kit and the water mixing accessory are components not included in the delivery.

14 HEATING AND COOLING AND DHW WITH CIRCUIT BREAKER
2. HEATING AND COOLING AND DHW WITH CIRCUIT BREAKER
23 24 25 26 910 11
NL
220-240Vac 50Hz
T
L
NCN4 4
AP1
CN9
AP1
19 20
KM3
18
2
XT3
CN16
AP1
13 14
KM1
12
2
XT3
KM3 -6 KM1 -6
70
71
5
6
7
8
86
4
4
69
10
11
12 6
15
1
2
13
14
13
17
66
18
19
6
20
21
22
A
B
C
RT5
N
5
6
7
16
23
HEAT
COOL
THERMOSTAT / VALVE LIMIT STOP
SUMMER/ WINTE R SELECTOR SWITCH
HEATING
COOLING
BROWN
BLUE RED
THREE-WAY
VALVE
DISPLAY BOARD
RT7 (water heater probe)
RESISTOR
DHW WATER
HEATER
230Vac COIL
RT5 (probe is an option)
RESISTOR
CIRCUIT BREAKER
230Vac COIL
DOMESTIC
HOT WATER
EXTERNAL CONTROL UNIT / AMBIENT THERMOSTATS

15
HEATING AND COOLING AND DHW WITH CIRCUIT BREAKER
Ref Description Notes
AHeating / cooling system -
B Hydraulic network -
C Recirculation -
1 Heat pump -
2 Control panel - user interface -
41” M-M ttings (**)
51” F-F exible hoses (**)
6 1“ M-F taps (**)
7Freeze protection valve (****)
8 1” F-F sleeves (**)
91” F-F Y-shaped lter (**)
10 Three-way deviating valve (**)
11 Heating element (**)
12 1” ¼ - 1” M-M tting (**)
13 Bleed valve (***)
14 WHPF PU bu󰀨er tank (**)
15 System discharge cock. (**)
16 Heating element (**)
17 WHDHP SS storage tank (**)
18 ½ “ tap (***)
19 Probe (**)
20 Safety valve. (***)
21 DHW expansion vessel (***)
22 Extra CH expansion tank (***)
23 Flange with resistor tting (**)
RT5 Probe (**)
(**) Extra accessory
(***) Not included in extra Fondital accessories
(****) To be used if no glycol solution is added to the system water. Does not protect the heat pump in case of power failure.
The diagram is purely indicative and for descriptive purposes.
The system must be designed and validated by a qualied thermal-engineering rm.

16 HEATING AND COOLING
3. HEATING AND COOLING
1
2
5
6
7
8
6
4
4
69
11
12 6
14
15
22
13
A
B
76
5
23 24 25 26 91011
NL
220-240Vac 50Hz
T
L
NCN16
AP1
13 14
KM1
12
2
XT3
KM1 -6
RT5
CN4 4
AP1
70 71
N
RT5 (probe is an option)
RESISTOR
CIRCUIT BREAKER
DISPLAY BOARD
HEATING
COOLING
DOMESTIC
HOT WATER
230Vac COIL
SUMMER/ WINTER SELECTOR SWITCH
EXTERNAL CONTROL UNIT
HEAT
COOL
THERMOSTAT / VALVE LIMIT STOP

17
HEATING AND COOLING
Ref Description Notes
AHeating / cooling system -
B Hydraulic network -
1 Heat pump -
2 Control panel - user interface -
41” M-M ttings (**)
51” F-F exible hoses (**)
6 1“ M-F taps (**)
7Freeze protection valve (****)
8 1” F-F sleeves (**)
91” F-F Y-shaped lter (**)
11 Heating element (**)
12 1” ¼ - 1” M-M tting (**)
13 Bleed valve (***)
14 WHPF PU bu󰀨er tank (**)
15 System discharge cock. (**)
22 Extra CH expansion tank (***)
RT5 Probe (**)
(**) Extra accessory
(***) Not included in extra Fondital accessories
(****) To be used if no glycol solution is added to the system water. Does not protect the heat pump in case of power failure.
The diagram is purely indicative and for descriptive purposes.
The system must be designed and validated by a qualied thermal-engineering rm.

18 HEATING AND COOLING AND DHW WITH COMPACT WATER HEATER
4. HEATING AND COOLING AND DHW WITH COMPACT WATER HEATER
23 24 25 26 91011
NL
220-240Vac 50Hz
T
L
N
CN4 4
AP1
CN9
AP1
19 20
KM3
18
2
XT3
CN16
AP1
13 14
KM1
12
2
XT3
KM3 -6 KM1 -6
70
71
N
1
2
5
6
7
8
8
6
4
69
16
22
10
4
15
13
20
21
18
19 (RT7)
A
B
C
16
RT5
76
5
13 13
23
230Vac COIL
RESISTOR
INERTIAL STORAGE TANK
RT5(probe is an option)
DHW WATER HEATER
RT7
(water heater probe)
RESISTOR
230Vac COIL
DISPLAY BOARD
DOMESTIC
HOT
WATER
HEATING
COOLING
RED
BROWN
BLUE
THREE-WAY
VALVE
THERMOSTAT / VALVE LIMIT STOP
SUMMER/ WINTER SELECTOR SWITCH
COOL
EXTERNAL CONTROL UNIT / AMBIENT THERMOSTATS
80 lit. - WHDHP 300 SSH 74 lit. - WHDHP 500 SSH
HEAT

19
HEATING AND COOLING AND DHW WITH COMPACT WATER HEATER
Ref Description Notes
AHeating / cooling system -
B Hydraulic network -
C Recirculation -
1 Heat pump -
2 Control panel - user interface -
41” M-M ttings (**)
51” F-F exible hoses (**)
6 1“ M-F taps (**)
7Freeze protection valve (****)
8 1” F-F sleeves (**)
91” F-F Y-shaped lter (**)
10 Three-way deviating valve (**)
13 Bleed valve (***)
15 System discharge cock. (**)
16 Heating element (**)
18 ½ “ tap (***)
19 Water heater probe (RT7) (**)
20 Safety valve. (***)
21 DHW expansion vessel (***)
22 Extra CH expansion tank (***)
23 Flange with resistor tting (**)
RT5 Probe (**)
(**) Extra accessory
(***) Not included in extra Fondital accessories
(****) To be used if no glycol solution is added to the system water. Does not protect the heat pump in case of power failure.
The diagram is purely indicative and for descriptive purposes.
The system must be designed and validated by a qualied thermal-engineering rm.

20 Unit operating principle
5. Unit operating principle
The air/water heat pump with DC inverter consists of an outdoor unit, an indoor unit and a storage tank with internal fan coil. Functions:
Cool;
(1) Heat;
(2) Hot Water;
(3) Cool + Hot Water;
(4) Heat + Hot Water;
(5) Emergen. mode;
(6) Fast Hot Water;
(7) Holiday mode;
(8) Force mode;
(9) Quiet mode;
(10) Disinfection;
(11) Weather depend;
(12) Floor preparation;
(13) Air removal;
(14) Other thermal
Cool: in cooling mode, the refrigerant condensates inside the outdoor unit and evaporates in the indoor unit. Thanks to heat exchange
with indoor unit water, water releases heat and its temperature decreases, while refrigerant absorbs heat and evaporates. Outlet tem-
perature can be set based on user's needs, by means of a wired control. System low-temperature water is connected to internal fan
coil and underground tube through a valve control, so as to ensure heat exchange with indoor air and decrease ambient temperature
to the required value.
Heat: in heating mode, the refrigerant evaporates inside the outdoor unit and condensates in the indoor unit. Thanks to heat exchange
with indoor unit water, water absorbs heat and its temperature increases, while refrigerant releases heat and condensates. Outlet
temperature can be set based on user's needs, by means of a wired control. System high-temperature water is connected to internal
fan coil and underground tube through a valve control, so as to ensure heat exchange with indoor air and increase ambient temper-
ature to the required value.
Hot Water: in water heating mode, the refrigerant evaporates inside the outdoor unit and condensates in the indoor unit. Thanks to
heat exchange with indoor unit water, water absorbs heat and its temperature increases, while refrigerant releases heat and con-
densates. Outlet temperature can be set based on user's needs, by means of a wired control. System high-temperature water is
connected to internal storage tank coil through a valve control, so as to ensure heat exchange with storage tank water and increase
its temperature to the required value.
Cool + Hot Water: when the cooling mode is combined to the water heating mode, user can set priority of either mode as required.
In the preset conguration, the heat pump has top priority. In this conguration, if the cooling mode is used together with the water
heating mode, the heat pump will give priority to cooling. In this case, water can only be heated up using the storage tank electric
heater. In the opposite conguration, the heat pump will give priority to water heating and switch to cooling only as soon as water has
been heated up.
Heat + Hot Water: when the heating mode is combined to the water heating mode, user can set priority of either mode as required.
In the preset conguration, the heat pump has top priority. In this conguration, if the heating mode is used together with the water
heating mode, the heat pump will give priority to heating. In this case, water can only be heated up using the storage tank electric
heater. In the opposite conguration, the heat pump will give priority to water heating and switch to heating only as soon as water has
been heated up.
Emergen. mode: this mode is only available for room heating and water heating. When the outdoor unit stops due to a malfunction,
the corresponding emergency mode is activated. For heating mode, after the emergency mode is activated, heating can only be ob-
tained through the electric heater of the indoor unit. When the set outlet or indoor temperature is reached, the electric heater of the
indoor unit stops working. For water heating mode, the electric heater of the indoor unit stops while the electric heater of the storage
tank is working. Once the set air or storage tank temperature is reached, the electric heater stops.