Unical HP_OWER 250N Use and care manual

User’s and Installer’s Manual
250 - 350 - 500
N

2
INDEX
1AIM AND CONTENTS OF THIS MANUAL........................................................................................................................... 3
1.1 HOW TOKEEP THIS MANUAL......................................................................................................................................... 3
1.2 GRAPHIC SYMBOLS .......................................................................................................................................................... 3
2SAFETY LAWS........................................................................................................................................................................... 3
3PERMITTED USES .................................................................................................................................................................... 3
4GENERAL SAFETY GUIDELINES......................................................................................................................................... 5
4.1 WORKERS’ HEALTH AND SAFETY................................................................................................................................. 5
4.2 PERSONAL SAFETY EQUIPMENTS................................................................................................................................. 5
4.3 SAFETY SYMBOLS............................................................................................................................................................. 5
4.4 REFRIGERANT SAFETY DATA SHEET........................................................................................................................... 6
5AVAILABLE VERSIONS, SIZES AND ACCESSORIES....................................................................................................... 7
5.1 OPTIONAL ACCESSORIES................................................................................................................................................ 7
6INSTALLATION......................................................................................................................................................................... 7
6.1 GENERALITY...................................................................................................................................................................... 7
6.2 LIFTING AND HANDLING................................................................................................................................................. 8
6.3 LOCATION AND MINIMUM TECHNICAL CLEARANCES............................................................................................ 8
6.4 HYDRAULIC CONNECTIONS........................................................................................................................................... 8
6.4.1 Hydraulic circuit............................................................................................................................................................ 9
6.4.2 Drainage connection...................................................................................................................................................... 9
6.4.3 Plant circuit filling......................................................................................................................................................... 9
6.4.4 Plant drainage system...................................................................................................................................................10
6.5 REFRIGERANT DIAGRAMS.............................................................................................................................................10
6.5.1 Refrigerant diagram of the model HP_OWER 250N – 350N........................................................................................10
6.5.2 Refrigerant diagram of the model HP_OWER 500N ....................................................................................................11
6.6 ELECTRICAL CONNECTIONS.........................................................................................................................................11
6.6.1 Power supply terminal block.........................................................................................................................................12
6.6.2 User’s terminal block....................................................................................................................................................12
6.6.3 PM Module phase protection........................................................................................................................................13
6.6.4 Plant management optional module terminal block CODE 00264034.........................................................................13
7START UP...................................................................................................................................................................................14
7.1 POWER-ON OF THE UNIT.................................................................................................................................................14
8INDICATIONS FOR THE USER.............................................................................................................................................14
9SHUTDOWNS FOR LONG PERIODS....................................................................................................................................14
10 MAINTENANCE AND PERIODICAL CONTROLS.........................................................................................................15
10.1 ENVIRONMENTAL PROTECTION ..................................................................................................................................16
11 DISPOSAL OF THE UNIT....................................................................................................................................................16
12 TECHNICAL DATA..............................................................................................................................................................17
12.1 STANDARD VERSION ......................................................................................................................................................17
12.2 PRODUCT FICHE AND TECHNICAL PARAMETERS ACCORDING TO REGULATION (EU) NO 811/2013............18
PRODUCT FICHE – HP_OWER FOR LOW-TEMPERATURE APPLICATION (TOUT: 35°C) ..........................................18
PRODUCT FICHE – HP_OWER FOR MEDIUM-TEMPERATURE APPLICATION (TOUT: 55° C)..................................18
TECHNICAL PARAMETERS FOR HEAT PUMP LOW TEMPERATURE (TOUT:35° C)......................................................................................19
TECHNICAL PARAMETERS FOR HEAT PUMP LOW TEMPERATURE (TOUT:35° C)...............................................................................20
TECHNICAL PARAMETERS FOR HEAT PUMP LOW TEMPERATURE (TOUT:35° C)......................................................................................21
TECHNICAL PARAMETERS FOR HEAT PUMP SPACE HEATERS MEDIUM TEMPERATURE (TOUT:55°C)........................................................22
TECHNICAL PARAMETERS FOR HEAT PUMP SPACE HEATERS MEDIUM TEMPERATURE (TOUT:55°C)........................................................23
TECHNICAL PARAMETERS FOR HEAT PUMP SPACE HEATERS MEDIUM TEMPERATURE (TOUT:55°C)........................................................24
12.3 A-WEIGHTED SOUND POWER........................................................................................................................................25
13 ELECTRIC DATA OF THE UNIT AND AUXILIARIES..................................................................................................25
14 AVAILABLE HEAD PRESSURE OF THE UNIT WITH INTEGRATED CIRCULATOR..........................................25

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15 CIRCULATOR’S CURVES.................................................................................................................................................. 26
15.1 MODELS HP_OWER 250N –350N ................................................................................................................................... 26
15.2 MODEL HP_OWER 500N.................................................................................................................................................. 26
15.4 CIRCULATOR CHARACTERISTICS............................................................................................................................... 27
16 HEAD LOSS CURVES OF THE HYDRONIC CIRCUIT................................................................................................. 27
17 CHARACTERISTIC CURVE OF THE CONTROL VALVE FOR UNIT IN PARALLEL.......................................... 28
18 ACCESSORIES TO REDUCE THE NOISE LEVEL........................................................................................................ 28
18.1 LN COD.00264036/00264037 ............................................................................................................................................. 28
18.2 SSL COD.00264038............................................................................................................................................................. 28
19 OPERATING LIMITS .......................................................................................................................................................... 29
19.1 EVAPORATOR WATER FLOW RATE............................................................................................................................. 29
19.2 COLD WATER TEMPERATURE (SUMMER OPERATION).......................................................................................... 29
19.3 HOT WATER TEMPERATURE (WINTER OPERATION) .............................................................................................. 29
19.4 AMBIENT AIR TEMPERATURE...................................................................................................................................... 29
20 CORRECTION FACTORS FOR USE OF GLYCOL........................................................................................................ 30
21 DIMENSIONS........................................................................................................................................................................ 31
22 ELECTRIC PANEL .............................................................................................................................................................. 32
1AIM AND CONTENTS OF THIS MANUAL
This manual provides the basic information as for the selection, installation, operation and maintenance of the HP_OWER units. It
is addressed to the installer and the user of the appliance and it includes the necessary indications allowing the user to operate
the unit efficiently, even without any previous specific knowledge of it.
The manual describes the characteristics of the appliance at the time of its marketing; therefore, it must be considered adequate
respecting the state of the art in terms of potentiality, ergonomics, safety and functionality.
The company introduces also technological improvements and is not constrained to update the manuals for previous versions of
appliances that could not be compatible. So make sure to use, for the installed unit, the supplied manual.
It’s recommended that, the user must follow the instructions contained in this booklet, especially those concerning the safety and
routine maintenance.
1.1 HOW TO KEEP THIS MANUAL
The manual has to be always kept with the unit it refers to. It has to be stored in a safe place, away from the dust and moisture. It
has to be accessible to all users who shall consult it any time they are in doubt on how to operate the equipment.
The company reserves the right to modify its products and related manuals without necessarily updating previous versions of the
reference material. It declines also any responsibility for possible inaccuracies in the manual if due to printing or transcription
errors.
The customer shall store any updated copy of the manual or parts of it delivered by the manufacturer as an attachment to this
manual.
The company is available to give any detailed information about this manual and to give information regarding the use and the
maintenance of its own units.
1.2 GRAPHIC SYMBOLS
Indicates operations that can be dangerous for people and/or disrupts the correct operation of the equipment.
Indicates prohibited operations.
Indicates important information that the operator has to follow in order to guarantee the correct operation of the
equipment in complete safety.
2SAFETY LAWS
Every unit have been designed in accordance with the following directives and harmonised standards:
•EU Directives 97/23/EC, 2006/42/EC, 2014/35/UE, 2014/30/EU, 2011/65/EU, 2012/19/EU
•UNI EN 378-1, 378-2, EN 12735-1
•UNI EN ISO 12100, EN 60204-1, UNI EN ISO 13857
•CEI EN 61000-6-3, IEC 61000-6-2.
3PERMITTED USES
•The company excludes any contractual and extracontractual liabilities for damages caused to persons, animals or objects, by
incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the
information contained in this manual.
•These units have been designed only for heating and/or cooling of water. Any other use not expressly authorized by the
manufacturer is considered improper and therefore not allowed.

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•The location of the plant, the hydraulic and electrical circuits must be established by the planting designer and must take into
account both technical requirements as well as any applicable local laws and authorized specifications.
•The execution of all works must be performed by skilled and qualified personnel, competent in the existing rules in different
countries.
The execution of all works must be performed by skilled and qualified personnel and competent in the existing rules in the
contry in which the appliance will be installed.

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4GENERAL SAFETY GUIDELINES
Before beginning to operate on HP_OWER units every user has to be perfectly knowledgeable about the functions of the
equipment and its controls and has to have read and understood the information listed in this manual.
It’s strictly forbidden to remove and/or tamper with any safety device.
Children or unassisted disabled persons are not allowed to use the appliance.
Do not touch the appliance when barefoot or parts of the body are wet or damp.
Do not clean the unit when the power supply is ‘ON’.
Do not pull, remove or twist the electrical cables coming out from the unit, even if it is disconnected from the main
power supply.
Do not step with your feet on the appliance, sit down and/or place any type of object.
Do not spray or pour water directly on the unit.
Do not dispose of, abandon or leave within reach of children packaging materials (cardboard, staples, plastic bags,
etc) as they may represent an environmental and life hazard.
Any routine and/or not-routine maintenance operation shall be carried out when the equipment has been shut down,
disconnected from electric and pneumatic power sources and after its pneumatic system has been discharged.
Do not put neither your hands nor insert screwdrivers, spanners or other tools into moving parts of the equipment.
The equipment supervisor and the maintenance man has to receive suitable training for the performance of their
tasks in safety.
Operators have to know how to use personal protective devices and have to know the accident-prevention guidelines
contained in national and international laws and norms.
4.1 WORKERS’ HEALTH AND SAFETY
The European Community has adopted a number of directives on workplace’s health and safety, including 89/391/CEE,
89/686/CEE, 89/655/CEE, 2009/104/CE, 86/188/CEE and 77/576/CEE directives. Every employer shall implement such norms and
ensure that workers to respect them. It points out that:
Do not tamper with or replace parts of the equipment without the specific consent of the manufacturer. The
manufacturer shall have no responsibility whatsoever in case of unauthorised operations.
Using components, expendable materials or spare parts that do not correspond to those recommended by the
manufacturer and/or listed in this manual may be dangerous for the operators and/or damage the equipment
The operator’s workplace has to be kept clean, tidy and free from objects that may prevent free movements.
Appropriate lighting of the work place shall be provided so as to allow the operator to carry out the required
operations safely. Poor or too strong lighting can cause risks.
Ensure that work places are always adequately ventilated and that aspirators are working, in good condition and in
compliance with the requirements of the laws in force.
4.2 PERSONAL SAFETY EQUIPMENTS
When operating and maintaining the HPOWER units, use the following personal protective equipments.
Protective clothing: Maintenance men and operators has to wear protective clothing that complies with the basic
safety requirements currently in force. In case of slippery floors, users have to wear safety shoes with non-slip soles.
Gloves: During maintenance or cleaning operation protection gloves have to be used
Mask and goggles: Respiratory protection (mask) and eye protection (goggles) should be used during
cleaning and maintenance operations.
4.3 SAFETY SYMBOLS
The unit features the following safety signs, which has to be complied with:
General hazards
Electric shock hazard
Presence of moving organs
Presence of surfaces that may cause injures
Presence of hot surfaces that can cause burns

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4.4 REFRIGERANT SAFETY DATA SHEET
Name:
R410A (50% Difluoromethane (R32); 50% Pentafluoroethane (R125).
RISKS INDICATIONS
Major risks:
Asphyxia
Specific risks:
The rapid evaporation may cause freezing.
FIRST AID
General informations:
Never give anything by mouth to an unconscious person.
Inhalation:
Move to fresh air.
Oxygen or artificial respiration if necessary.
Do not administer adrenaline or similar drugs.
Eyes contact:
Rinse carefully with water for at least 15 minutes and consult a doctor.
Contact with skin:
Wash immediately with plenty of water.
Take off immediately the contaminated clothing.
FIRE PREVENTION
Extinguishing Media:
Whatever.
Specific risks:
Increase in pressure.
Specific methods:
Use water spray to cool containers
ACCIDENTAL RELEASE ACTIONS
Personal precautions:
Evacuate personnel to safe areas.
Provide adequate ventilation.
Use personal protective equipment.
Environmental
Evaporate.
Cleaning method:
Evaporate.
HANDLING AND STORAGE
Manipulation
Action/technical
Provide sufficient air exchange and/or suction in work places.
Recommendations for safe
Do not breathe vapors or aerosol.
Storage:
Close tightly and store in a cool, dry and well ventilated place.
Store in original container. Incompatible products: explosive, flammable materials, Organic
EXPOSURE CONTROL / PERSONAL PROTECTION
Control parameters:
AEL (8-h e 12-h TWA) = 1000 ml/m³ for each of the two components.
Respiratory protection:
For rescue and maintenance operation in storage tanks use self-contained respirator
The vapors are heavier than air and can cause suffocation by reducing oxygen available for
Eyes protection:
Safety glasses.
Protection of hands:
Rubber gloves.
Hygiene measures:
Do not smoke.
PHYSICAL AND CHEMICAL PROPERTIES
Colour:
Colourless.
Odor:
Light.
Boiling point:
-52.8°C at atmospheric pressure.
Lighting point:
It does not ignite.
Density:
1.08 kg/l at 25°C.
Solubility in water:
Negligible.
STABILITY AND REACTIVITY
Stability:
No reactivity when used with the appropriate instructions.
Materials to avoid:
Highly oxidizing materials. Incompatible with magnesium, zinc, sodium, potassium and
The incompatibility is more serious if the metal is present in powdered form or if the surfaces
were, recently, unprotected.
Decomposition products
These products are halogenated compounds, hydrogen fluoride, carbon oxides (CO, CO2),
Risks:
TOXICOLOGICAL INFORMATION
Acute toxicity:
(R32) LC50/ inhalation /4 hours/on rat >760 ml/l
(R125) LC50/ inhalation /4 hours/on rat >3480 mg/l
Local effects:
Concentrations substantially above the TLV may cause narcotic effects.
Inhalation of decomposed products of high concentrations may cause respiratory failure
Long term toxicity:
Did not show carcinogenic, teratogenic or mutagenic effects in animal experiments.
ECOLOGICAL INFORMATION
Global warming potential
1730
GWP (R11=1):
Potential depletion
0
Ozone ODP (R11=1):
Disposal considerations:
usable with reconditioning.

HP_OWER
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5AVAILABLE VERSIONS, SIZES AND ACCESSORIES
Model
Description
Standard configuration code
HP_OWER 250
Size 25 kW
00269135
HP_OWER 350
Size 35 kW
00268661
HP_OWER 500
Size 50 kW
00269137
Name of factory-fitted accessories:
CODE Descrizione NAME
00264032/33 High efficiency integrated circulator CI
00264035 Antifreeze kit KA
00264034 Management plant module GI
00264038 KIT SLN Super silencing SLN
5.1 OPTIONAL ACCESSORIES
Touch-
screen
Multifunction touch screen remote control with centralized management, functions of USB port, temperature and
humidity sensors. It has also an extremely intuitive interface simplifying the use of the controller.
LN Silence kit for compressor
AG Anti-vibration rubber pad to be installed in the chassis of the unit for possible shock absorption.
IMPORTANT NOTE
ONLY THE OPTIONAL ACCESSORIES CAN BE REQUIRED AFTER THE ORDER OF THE UNIT,
WHILE THE FACTORY INSTALLED ACCESSORIES CAN NOT BE REQUIRED AFTER THE ORDER OF THE UNIT.
6INSTALLATION
WARNING: All the operation described in next chapters MUST BE DONE BY TRAINED PEOPLE ONLY. Before any
operation on the unit, be sure that the electric supply is disconnected.
6.1 GENERALITY
When installing or servicing the unit, it is necessary to strictly follow the rules listed in this manual, to conform to all the
specifications of the labels on the unit, and to take any possible precautions. Not observing the rules reported on this manual can
create dangerous situations.
After receiving the unit, immediately check its integrity. The unit left the factory in perfect condition; any eventual
damage has to be questioned to the carrier and recorded on the Delivery Note before signing it.
The company has to be informed, within 8 days, of the extent of the damage. The Customer should prepare a written statement of
any severe damage.
WARNING: The units are designed for outdoor installation and for places not directly accessible to unqualified
personnel. The place of installation must be entirely far away from fire risk. All the necessary measures should be
adopted in order to prevent the fire risk in the place of installation. The outdoor ambient temperature shall not
exceed 46°C. Above this value, the unit is no longer covered by the directives in force in the area of pressure
equipment.
WARNING: The unit should be installed so that adequate clearance is available for maintenance and repairation. The
warranty does not cover costs related to platforms or handling equipment necessary for any maintenance.
All maintenance and testing operations should be carried out only by QUALIFIED PERSONNEL.
Before any operation on the unit, make sure the power supply is disconnected.
WARNING: MOVING PARTS, RISK OF DEATH.
Disconnect the power supply and ensure that the fan is stopped before opening the front panel.
The top part and discharge pipes of the compressor operates at high temperatures. Be sure to let the unit to become
cool before beginning any maintenance work.
Be careful when working near condensing coils.
The aluminum fins are very sharp and can cause serious injuries.
After the maintenance operations, close the panels tightly with the fastening screws.

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6.2 LIFTING AND HANDLING
The handling must be performed by qualified personnel, properly equipped with appropriate equipments to the weight and the
encumbrance of the unit, in compliance with safety regulations of accident preventing.
When the unloading and the placement of
the unit, it is highly recommended to avoid
any sudden or violent motion in order to
protect the inner components and the frame.
The units can be lifted by mean of a forklift
or, otherwise by mean of belts, making sure
to damage the lateral panels and the cover of
the unit using a structure of spacers as shown
in the drawing. In this context, it is necessary
to hook indirectly the unit to the basement
but on two steel pipes of adequate
dimension that to pass into the appropriate
holes situated in the same basement of the
unit. It is important to keep the unit
horizontal during these operations.
1) Handling with forklift
under the pallet
2) Handling with forklift under
the unit using the appropriate
windows of passing forks
3) Handling by mean
of belts
6.3 LOCATION AND MINIMUM TECHNICAL CLEARANCES
All HP_OWER models are designed for outdoor installations; any cover over the unit or locating near trees (even if they partially
cover the unit) has to be avoided in order to allow the air recirculation. It is advisable to realize a supporting basement, with
adequate size similar to unit foot-print. The unit vibration level is very low: it is advisable however, to fit a rigid rubber band
between basement and unit base-frame. It is also possible to install anti-vibration supports (springs or rubbers) to keep vibrations
at a very low level. An absolute care has to be taken to ensure adequate air volume to the condenser. The re-circulation of
discharge air has to be avoided; failure to observe this point will result in poor performance or activation of safety controls. For
these reasons it is necessary to observe the following clearances:
MOD.
A
B
C
D
HP_OWER 250N
1500
500
1000
850
HP_OWER 350N
1500
500
1000
850
HP_OWER 500N
1500
500
1000
850
* The recommended minimum distance for installation,
maintenance and operation.
N.B. Avoid suspended installations. If you cannot, use your
common sense and follow local regulations, and in the case of
doubt, contact your authorized service center.
6.4 HYDRAULIC CONNECTIONS
The hydraulic connections have to be installed in accordance with national and local regulations; pipes can be made up of steel,
galvanized steel or PVC. Pipes have to be designed depending on the nominal water flow and on the hydraulic pressure drops of
the system. All the hydraulic connections must to be insulated with closed-cell material of adequate thickness. Chillers have to be
connected to piping by means of flexible joints. The hydraulic circuit should include the following components:
•Hole thermometers for monitoring the hydraulic circuit’s temperature.
•Manual gate valves to separate the chiller from the hydraulic circuit.
•Y-shaped metallic filter (to be mounted on the return pipe from the plant) with a metallic mesh not larger than 1mm.
•Loading group and discharge valve, where it’s necessary.
Front panel

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WARNING: Make sure that, when designing the pipe length and diameter do not exceed the maximum head loss on
the plant side, please see the technical data given in the table of Paragraph 0 (available head pressure).
WARNING: In the models of HP_OWER series, the expansion vessel is not integrated on the plant side. The actual
capacity of plant circuit should
be checked by the installer in order to provide an expansion tank with adequate
l
WARNING: Connect the pipes to the attacks by using always key against key system.
WARNING: Unit water inlet pipe have to be in correspondence with the connection labelled: ”WATER INLET”,
otherwise the evaporator may freeze.
WARNING: It is compulsory to install on the WATER INLET connection a metallic filter with a mesh not larger than
1mm. Should the water flow switch be altered or should the filter not be installed, the warranty will no longer be
valid. The filter have to be kept clean, so make sure it is clean after the unit has been installed, and then check it
periodically.
All units are standard supplied with the water flow switch (factory installed). Should the water flow switch be
altered, removed, or should the water filter not be installed on the unit, the warranty will be invalidated. Please
refer to the wiring diagram for the water flow switch electric connections.
The water on the filling/replenishment pipe must be opportunely pre-filtered from any suspended particles and
impurities through the use cartridge filter (washable, wrapped wire, etc.) of at least 100 microns.
Check the water hardness with which you load and top up the plant circuit. With particularly hard water, in this
case it is necessary to utilize a water softener. For treating water for the plant, please refer to UNI 8065.
CAUTION: The INVERTER control system is able to manage minimum water contents in the
plant up to a value of
75 liters for the model HP_OWER 250, of 105 liters for the model HP_OWER 350
, of 150 liters for the model
HP_OWER 500. This value makes reference to the liters absolute value and not to any kW of installed power.
6.4.1 Hydraulic circuit
HP_OWER 250-350N HP_OWER 500N
A
Plate heat exchanger
B
Water flow switch
C
Service valve
D
Inlet pressure gauge
E
Outlet pressure gauge
F
Air vent valve
G
Safety valve
H
Circulating pump
At the highest point of the plant circuit it is necessary to install an automatic air vent valve.
Provide an auxiliary expansion tank (not supplied) in order to control the volume changes in the plant side.
6.4.2 Drainage connection
All HP_OWER units are adopt drain holes on the basement for the discharge of the condensate that may leach from the pipes of
the hydraulic and refrigerant circuits, and to discharge the water generated during defrosting cycles.
6.4.3 Plant circuit filling
WARNING: Verify all the filling/replenishment operations.
WARNING: Before beginning the filling/replenishment operation of the plant circuit, disconnect the unit from the
electric power supply.
WARNING: The filling/replenishment of the plant circuit must always be done under controlled conditions of
pressure (max 1 bar). Make sure that you have installed on the line of filling/replenishment a pressure reducer and a
relief valve.
WARNING: The water on the filling/replenishment pipe must be suitably pre-filtered from any impurities and
suspended particles. Make sure that you have installed a cartridge filter removable.
WARNING: Before beginning the filling /replenishment operation, unscrew the plugs of the air vent valve. Tighten
the plugs after finishing the operation of filling/replenishment of the plant circuit system.

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6.4.4 Plant drainage system
In the case when it is necessary to unload the plant, close at first the inlet and outlet manual gate valves (not supplied) and then
remove the pipes that are disposed externally on the water inlet and on the water outlet in order to spill away the liquid contained
in the unit (in order to make easy the operation, it is recommended to install externally two draining valves, on the water inlet and
on the water outlet, between the unit and the manual gate valves).
6.5 REFRIGERANT DIAGRAMS
6.5.1 Refrigerant diagram of the model HP_OWER 250N – 350N
LP
LS
ST
Pr
HP
DT
M
SE
EEV NRV
NRV
4WV
C
P
OUT
IN
FL FL
LR
LR
PV
PV
CP
VNRV
C
INVERTER COMPRESSOR
ST
COMPRESSOR INLET TEMPERATURE
DT
COMPRESSOR OUTLET TEMPERATURE
HP
HIGH PRESSURE TRANSDUCER
Pr
HIGH PRESSURE FLOW SWITCH
LP
LOW PRESSURE TRANSDUCER
LS
LIQUID SEPARATOR
4WV
CYCLE REVERSING VALVE
LR
LIQUID RECEIVER
EEV
ELECTRONIC EXPANSION VALVE
FL
FILTER
M
AXIAL FAN
SE
OUTDOOR AIR TEMPERATURE SENSOR
P
CIRCULATOR ON BOARD UNIT
IN
WATER INLET TEMPERATURE
OUT
WATER OUTLET TEMPERATURE
V
ON/OFF VALVE WITH SOLENOID
CP
CAPILLARY
NRV
NO RETURN VALVE
PV
PRESSURE CHECK VALVE
1
During the operations of filling/replenishment, the plugs of the air vent
valves must be partially unscrewed to allow air to flow freely out of the
valves.
Refer to the Paragraph 20.
(1) Plug of the air vent valve
You can use the service valve, when it is necessary to refill the plant or
adapt the concentration of glycol. Unscrew the plug (cap) of the service
valve and connect to the hose a pipe of 14 mm (inner diameter)
connected to the water network, and then fill the system by
unscrewing the knurled nut. When the operation is concluded,
retighten the knurled nut and screw on the plug. In any case, we
recommend you to use for the water loading of the plant an external
tap whose arrangement is by the installer.
Cap with gasket
Knurled nut

11
6.5.2 Refrigerant diagram of the model HP_OWER 500N
LP
LS
Pr HP
DT
FL FL
M
SE
OUT
IN
4WV
EEV NRV
NRV
LR
LR
ST
PV
PV
CP
LR
P
V
NRV NRV
NRV *
V *
NRV *
CC
NRV
C
INVERTER COMPRESSOR
ST
COMPRESSOR INLET TEMPERATURE
DT
COMPRESSOR OUTLET TEMPERATURE
HP
HIGH PRESSURE TRANSDUCER
Pr
HIGH PRESSURE FLOW SWITCH
LP
LOW PRESSURE TRANSDUCER
LS
LIQUID SEPARATOR
4WV
CYCLE REVERSING VALVE
LR
LIQUID RECEIVER
EEV
ELECTRONIC EXPANSION VALVE
FL
FILTER
M
AXIAL FAN
SE
OUTDOOR AIR TEMPERATURE SENSOR
P
CIRCULATOR ON BOARD UNIT
IN
WATER INLET TEMPERATURE
OUT
WATER OUTLET TEMPERATURE
CP
CAPILLARY
V
ON-OFF SOLENOID VALVE
NRV
NO RETURN VALVE
PV
PRESSURE CHECK VALVE
6.6 ELECTRICAL CONNECTIONS
Check if the power supply circuit meets the unit’s electric nominal data (tension, phases, frequency) reported on the label
attached on the right-side panel of the unit. The wiring must be done in accordance to the wiring diagram attached to the unit and
in conformity with the national and international norms in force (attempting to provide a general magneto-thermic circuit breaker,
differential circuit breakers for each electric line, proper grounding for the plant, etc.). Power cables, electric protections and line
fuses have to be sized according to the specifications listed in the wiring diagram enclosed with the unit and in the electrical data
contained in the table of technical characteristics (see Paragraph 0).
Because of the presence, inside the machine, of EMC filters for compliance with EMC limits (interference emission and
interference immunity), earth fault currents up to 250 mA of intensity can be detected.
For proper installation, electrically connect the unit with a dedicated line; if you use a residual current circuit breaker,
choose a four-pole one, with a trigger threshold of 300 mA and delayed triggering (super-resistant, characteristic K).
The machine must be installed in TN-S/TT power supply grounding systems.
The electrical installation must be carried out in accordance with norms in force.
WARNING: The supply voltage’s fluctuations cannot exceed ±5% of the nominal value. Should this tolerance not be
respected, please contact our technical department.
WARNING: The power supply have to respect the listed limits: failing this, warranty will terminate immediately.
Before any operation on the unit, be sure that the power supply is disconnected.
WARNING: The water flow switch (B component in the previous hydraulic circuit and factory installed) has ALWAYS to
be connected following the indications listed in the wiring diagram. Never bridge the water flow switch connections in
the terminal board. The guarantee will not be valid if the water flow switch connections are altered or not correctly
performed.
Install upstream of each unit an adequate protection and disconnection device of the electric power with delayed
characteristic curve, with at least 3 mm contact opening and with an adequate capacity of breaking and differential
protection.
A good grounding is required; the manufacturer is not responsible for damage caused in case of lack of good
grounding.
Use cables that meet the regulations in force in different countries.
If the lightning risk is high, the unit must be protected, the risk assessment must comply with the CEI EN 62305-2
regulation.
If there is a possibility that a lightning can strike the area around the appliance, stop the operation of the unit and
disconnect the system upstream switch.
Make sure to ground the unit.
Do not ground the unit with pipes or lightning rods.
A poor grounding of the unit can result in electrocution.
Warning: Electrostatic discharges can damage the electronic components, before performing any work; ground the
electrostatic charge by touching objects such as water or heating pipes.
Before working on the control panel it is OBLIGATORY to:
•Turn off the units from control panel (displayed “OFF”).
•
Place the general differential QF switch in “OFF” state.

12
•Wait for 90 seconds before getting access to the electrical panel.
•Be sure that the grounding connection is good before carrying out any repairs.
•Be sure that you are well insulated from the ground, with dry hands and feet, or by using insulating platforms
and gloves.
•
Check that there is no foreign material near the system.
WARNING: The remote control panel is connected to the water chiller by means of no.4 wires having a 1,5 mm2
section. The power supply cables have to be separated from the remote control wires. The maximum distance is 50m.
WARNING: The remote control panel cannot be installed in areas with strong vibrations, corrosive gases, and excess
of dirtiness or high humidity levels. Leave free the area near the cooling openings.
6.6.1 Power supply terminal block
The power supply of the units is 3-Ph/N/PE 400V, 50Hz. The power cables should be brought inside the electrical panel of the unit
and connected to the disconnecting switch inside the electric panel itself, in the bottom at the left, as shown in the following figure:
Electrical wiring has to be done only by qualified personnel.
PE
PE
193
4
5
2
7
8
PE
PE
2
5
4
3
6
1
8
7
I ON
O
OFF
PE L1 L2 L3 N
The connections of the power supply cables to the disconnecting switch should be done in order from left to right as following:
protective earth (PE), phase conductor 1 (L1), phase conductor 2 (L2), phase conductor 3 (L3), neutral conductor (N).
6.6.2 User’s terminal block
L1F1
L1F1
L2F1
L2F1
L3F1
L3F1 N-1 N-2
N-1 N-2 PE-1
PE-1
L3-1 L3-2
L3-1 L3-2
HPS
HPS 12AC1 12N1
12AC1 12N1 DO1 DO3 DO5
DO4 DO6 DO7
DO2
DO7N
DO6N
DO5N
DO4N
DO3NDO2N
DO1N
DO7N
DO6N
DO5N
DO4NDO3NDO2N
DO1N
DO1 DO3 DO5
DO4 DO6 DO7
DO2
AO1 AO2
A02AO1
AO2
AO1
AO1 AO2
AI1 AI2
AI2
AI1
AI2AI1
AI1 AI2
ST1 ST2 ST4
ST4
ST2
ST4
ST3 ST4
ST1
ST1
ST1
ST2
ST2
ST3
ST3
ST3 ST5
ST5
ST5
ST5
ST6 ST7 ST8
ST8
ST7
ST6
ST8
ST7
ST6
ST6 ST7 ST8
ID1 ID3
ID3
ID3
ID2 ID3
ID2
ID2
ID1
ID1
ID1
ID2
GNDR
GNDR
R+
R-
R-
R+
TERMINAL
TYPE
CONNECTION
12N1
Power supply 12 Vac
POWER SUPPLY FOR REMOTE KEYBOARD
12AC1
Power supply 12 Vac
POWER SUPPLY FOR REMOTE KEYBOARD
ID2
Digital input
Summer/Winter mode changeover
ID3
Digital input
Remote switch on/off input (if closed=unit is ON / if open = unit is off)
ST6
NTC sensor -10kΏat 25°C β3435
(1)Domestic hot water temperature sensor (if enabled)
ST7
NTC sensor -10kΏat 25°C β3435
(1) Plant water temperature sensor (if enabled)
ST8
Digital input
(1)(2) Ambient thermostat
DO5(phase)
DO5N(neutral)
Under-voltage output 230Vac,
50Hz, 5A resistive, 1A inductive
(1)Domestic (sanitary) hot water valve
DO6(phase)
DO6N(neutral)
Under-voltage output 230Vac,
50Hz, 5A resistive, 1A inductive
(1)(2) Secondary circulator
GNDR
Serial communication
Modbus ground reference connection terminal for remote supervision
R+
Serial communication
Modbus + signal connection terminal for supervision
R-
Serial communication
Modbus - signal connection terminal for supervision
N-3 / N-4
230Vac (Neutral)
L3-3
230Vac (Phase)
PEA
Grounding reference
(1) Enablement from maintainer level

13
(2) The management of the relaunching circulator requires the optional “GI” module code 00264034
6.6.3 PM Module phase protection
The PM module detects the correct sequence of the 3-phases (L1, L2, and L3) power supply. The 3-phases power supply must be
connected respecting the correct sequence of the phases so as to ensure the right direction of rotation at the compressor start-up
and during operation. When the PM module acts for lack of phase, the controller will receive a signal to interrupt it from the
power supply.
6.6.4 Plant management optional module terminal block CODE 00264034
Where the plant management kit (optional) is present, a third controller is located inside the electric panel, which acts as I/O
resource expansion module. With this controller, it is therefore possible to increase the number of logics handled by the main
controller; in particular these logics are used to manage the plant system and are reported below. The functions described below
can be activated by the on-board unit controller that is located on the unit’s front panel.
For the configuration of the functionalities, please check the control manual supplied with the unit.
DO1E DO3E DO5E
DO4E ST5E ST6E
DO2E
DO1EN
DO1EN
DO1E DO3E DO5E
DO4E ST5E ST6E
DO2E
ST7E
STE
ST7E
ST7E
ID3E
ID3E
ID3E
ID3E
DO2EN DO3EN DO4EN DO5EN ST5E ST6E
DO2EN DO3EN DO4EN DO5EN ST5E ST6E
ID2E
ID2E
ID2E
ID2E
ST8E
ST8E
ST78E
ST8E
AO2E
AO2E
AO2E
AO2E
AO1E
AO1E
AO1E
AO1E
TERMINAL
TYPE
CONNECTION
ID2E
Digital input
(1)Ambient thermostat
ID3E
Digital input
(1)Double setpoint
DO1E(Phase)
DO1E N(Neutral)
Under-voltage output 230V ac,
50Hz, 5A resistive, 1A inductive
Plant auxiliary heating element
(3)
Secondary (relaunching) circulator
DO2E(Phase)
DO2E N(Neutral)
Under-voltage output 230V ac,
50Hz, 5A resistive, 1A inductive
Domestic hot water auxiliary electric heater
(3)
Boiler’s activation
DO3E(Phase)
DO3E N(Neutral)
Under-voltage output 230V ac,
50Hz, 5A resistive, 1A inductive
Alarm warning
(3)
Lockout warning
DO6E(Phase)
DO6EN(Neutral)
Under-voltage output 230V ac,
50Hz, 5A resistive, 1A inductive
Double setpoint valve
(3)
Domestic hot water valve
DO7E(Phase)
DO7E N(Neutral)
Under-voltage output 230V ac,
50Hz, 5A resistive, 1A inductive
Plant season warning
(3)
Defrosting warning
(1) Enablement from maintainer level
(3) Otherwise

14
7START UP
Before start-up:
•Check out the availability of the supplied wiring diagrams and manuals of the installed appliance.
•Check out the availability of the electrical and hydraulic diagrams of the plant in which the unit is installed.
•Check that the shut-off valves of the hydraulic circuits are open.
•Verify that the hydraulic circuit has been charged under pressure and air vented.
•Check out that all hydraulic connections are properly installed and all indications on unit labels are respected.
•Check if all power cables are properly connected and all terminals are tightly fixed.
•Check if the electrical connections are performed according to the norms in force including the grounding connection.
•Check if the voltage is that shown in the unit labels.
•Make sure that the voltage is within the limits (±5%) of tolerance range.
•Check if the electric heaters of the compressors are powered correctly.
•Make sure that there is no refrigerant leak.
•Be sure that all the cover panels are installed in their proper positions and locked with fastening screws before start up.
•If the first start-up of the machine does not turn the display on of the controller, you must reverse the phase sequence of the
power supply cable.
WARNING: The unit must be connected to the electrical network and should be in STAND-BY mode (powered) closing
the general switch in order to operate the crankcase heaters of the compressor for a minimum of 12 hours before
start up. (the electric heaters are automatically powered when the main switch is switched off). The crankcase
heaters are working properly if, after some minutes, the temperature of crankcase’s compressor is about 10°C ÷ 15°C
higher than ambient temperature.
WARNING: Never switch off the unit (for a temporary stop) by switching off the main switch: this component should
be used to disconnect the unit from the power supply only for lengthy stoppages (e.g. seasonal stoppages). Besides,
failing the power supply, the crankcase’s heaters
are not supplied thus resulting in a possible breakdown of the
compressors once the unit is switched on.
WARNING: Do not modify the internal wiring of the unit otherwise the warranty will terminate immediately.
WARNING: The summer/winter operating mode has to be selected at the beginning of the related season. Frequent
and sudden changes of this seasonal operating mode have to be avoided in order to prevent severe damages to
compressors.
WARNING: When you first install and start-up the unit make sure that the unit is working properly in both cooling
and heating modes.
7.1 POWER-ON OF THE UNIT
For powering on the appliance, rotate the outer handle of the disconnector to the ON position (indicated with "I").
The display on the machine is turned on only if the phase sequence is correct (verification to be done during initial startup).
Between a shutdown and subsequent power on, wait a minimum time of 1 minute.
8INDICATIONS FOR THE USER
It’s important to take note of the identification data of the unit in order to provide them to the Technical Assistance Service in case
of assistance request.
The identification plate fixed on the unit shows the technical specifications and the performance of the equipment.
In case of manumission, removal or deterioration, please ask a duplicate to the Technical Assistance Service.
The manumission, removal or damaging of the nameplate makes difficult any operation of installation,
maintenance and spare parts request.
It is recommended to keep track of assistance operations done on the unit; this will make easy searching any troubleshooting.
In case breakdown or malfunction situations:
•check the type of alarm to communicate it to the service center;
•contact an authorized service center;
•if required by the service center, turn off the unit immediately without resetting the alarm;
•Ask the use of original spare parts.
9SHUTDOWNS FOR LONG PERIODS
• Turn off the unit by placing the switch of each unit to "OFF" position.
• Close the water valves.
• Place the general differential circuit breaker to "OFF" position.
If the temperature drops below 0°C there is a serious risk of frost: add a mixture of water and glycol in the plant,
otherwise drain the hydraulic circuits of the plant and of the heat pump.
WARNING: if the ambient temperature becomes lower than -15°C, in case the unit is turned off and powered down
also for short periods, it’s compulsory to drain the plant and the hydraulic circuit of the unit by the mixture of water
and glycol. Otherwise, the circulator may be irreversibly damaged.
WARNING: with water temperatures below than +5°C, although the transient operation is not guaranteed regarding
the limits set out in Paragraph 20.4
. Before you turn the unit on after a long off period, make sure that the
temperature of the mixture of water and glycol is higher than or at least equal to +5°C.

15
10 MAINTENANCE AND PERIODICAL CONTROLS
If the temperature drops below 0°C there is serious danger of frost: add a mixture of water and glycol in the plant,
otherwise drain the hydraulic circuits of the plant and of the heat pump.
WARNING: if the ambient temperature becomes lower than -15°C ,
in case the unit is turned off and powered down also for short periods, it’s compulsory to drain the plant and the
hydraulic circuit of the unit by the mixture of water and glycol. Otherwise, the circulator may be irreversibly
damaged.
WARNING: the operation, although it was transient, with water temperatures below +5°C is not guaranteed on the
basis of the limits set out in Paragraph 20.4. Before you turn the unit on after a long off period, make sure that the
temperature of the mixture of water and glycol is higher than or at least equal to +5°C.
WARNING: All the operations described in this chapter HAVE TO BE CARRIED OUT BY TRAINED STAFF ONLY. Before
any operation or before entering the inner components of the unit, be sure that the power supply is disconnected.
The compressor’s heads and discharge pipes
are usually at high temperature levels. Be very careful when operating
in their surroundings.
Aluminium coil fins are very sharp and can cause serious wounds. Be very careful when
operating in near them. After maintenance operations, re-install the cover panels, and fix them by means of screws.
The refrigerant circuits must not be filled with different gas other than that indicated on the nameplate. The use of a
different refrigerant can cause severe damage to the compressor.
It’s forbidden to use oils other than those specified in this manual. The use of different oil can cause serious damage
to the compressor.
WARNING: MOVING PARTS, RISK OF DEATH.
Disconnect the power supply and ensure that the fan is stopped before opening the front panel.
The temperatures of heads and exhaust piping of the compressor are usually high.
Pay attention to the surfaces of the driver boards heat sinks (see Chapter 23), which can become very hot.
Be careful when working near condensing coils.
The aluminum fins are very sharp and can cause serious injuries.

16
It is a good rule to carry out periodic checks in order to verify the proper operation of the unit.
OPERATION
1 month
4 month
6 month
Charging the water circuit.
x
Presence of bubbles in the water circuit.
x
Check if the safety and control devices work correctly
x
Check if there is oil leakage from compressor.
x
Check if there is water leakage from the hydraulic circuit.
x
Check the proper working of the flow switches.
x
Check that the crankcase electric heaters are properly supplied and functioning.
x
Clean the metallic filters of the hydraulic circuit.
x
Clean the finned coil by means of compressed air or water jet.
x
Check if all the terminals on the electric board as well as on the terminals of the compressor are
properly fixed.
x
Check the tightening of water connections.
x
Check the tightening and the balancing of the fan blades.
x
If the voltage is correct.
x
Check the Correct absorption.
x
Check the refrigerant charge.
x
Check the operating pressure, and superheat and sub-cooling
x
Check of the efficiency of circulation pump.
x
Check the expansion tank.
x
If the unit should be out of service for a long period, discharge water from the piping and from
heat
exchanger. This operation is necessary if, during seasonal stoppages, ambient temperature is
expected to go down below the freezing point of the employed fluid.
x
10.1 ENVIRONMENTAL PROTECTION
According to the norms dealing with the use of depleting stratospheric ozone substances, it is forbidden to disperse refrigerants
fluids in the atmosphere. They have to be collected and delivered to the seller or to proper gathering points at the end of their
operating life. Refrigerant R410A is mentioned among controlled substances and for this reason it has to be subjected to the
mentioned norms. A particular care is recommended during service operations in order to reduce as much as possible any
refrigerant loss.
11 DISPOSAL OF THE UNIT
Once the unit is arrived at the end of its life cycle and needs to be removed or replaced, the following operations are
recommended:
•the refrigerant has to be recovered by trained people and sent to proper collecting centre;
•compressors’ lubricating oil has to be collected and sent to proper collecting centre;
•the frame and the various components, if not serviceable any longer, have to be dismantled and divided according to their
nature, particularly copper and aluminium, which are present in conspicuous quantity in the unit. These operations allow easy
material recover and recycling process, thus reducing the environmental impact.
The user is responsible of the proper disposal of this product, according to national regulations in the country of destination of the
appliance. For more information you should contact the installation company or local competent authority.
An incorrect decommissioning of the appliance may create serious environmental damage and endanger people’s
safety. Therefore, it’s recommended that the unit shall be disposed only by authorized persons and technical training
who have followed training courses recognized by the competent authorities.
It is required to follow the same precautions described in the previous paragraphs.
Pay special attention during the disposal operation of the refrigerant gas.
The illegal disposal of the product by the end user leads to the application of the penalties in accordance with the
law in the country where the disposal takes place.
The crossed bin symbol applied on the appliance indicates that the product, at the end of its useful life, must be
collected separately from other wastes.

17
12 TECHNICAL DATA
12.1 STANDARD VERSION
Operating conditions:
(1) Cooling: Outdoor air temperature 35°C; inlet/outlet temperature 23/18°C.
(2) Cooling: Outdoor air temperature 35°C; inlet/outlet temperature 12/7°C.
(3) Heating: Outdoor air temperature 7°C DB 6°C WB; inlet/outlet temperature 30/35°C.
(4) Heating: Outdoor air temperature 7°C DB 6°C WB; inlet/outlet temperature 40/45°C.
(5) Cooling: water temperature inlet/outlet 12/7°C.
(6) Heating: normal climatic condition; Tbiv=-7°C; eater temperature inlet/outlet 30/35°C.
(7) Calculated in the case of the plant water temperature decreased by 15°C for 6 minutes of defrosting.
(8) Condition (3); the value is determined on the basis of measurements taken in accordance with the UNI EN ISO 9614-2, in compliance with the requirements of
Eurovent certification.
(9) Sound pressure level measured at 1m from the unit, in free field, according to ISO 3744. Also the values with installed accessories SL or SSL are reported.
(10) Packing height including the pallet.
(*) With Hz max operation, this function can be activated by the user.
N.B. The performance data are indicative and could be subject to change. In addition, the performances declared in apex (1), (2), (3) and (4) refer to the
instantaneous power according to EN 14511. The declared data stated in the apex (5) and (6) is determined according to the UNI EN 14825.
TECHNICAL CHARACTERISTICS Unit
HP_OWER
250N
250N +
Integrated
circulator
350N
350N +
Integrated
circulator
500N
500N +
Integrated
circulator
Electric data
Power supply
400V/3P+N+T/50Hz
400V/3P+N+T/50Hz
400V/3P+N+T/50Hz
Maximum power input
kW
14,83
15,14
19,16
19,47
28,62
29,09
Maximum current input
A
21,4
21,9
27,7
28,1
41,4
42,1
Cooling
Cooling capacity (1)
kW
30,50 (33,5*)
30,65 (33,5*)
36,21 (39,3*)
36,37 (39,3*)
49,11 (52,1*)
49,32 (51,8*)
Power input (1)
kW
6,77
6,62
8,90
8,91
12,27
12,06
EER (1)
W/W
4,51
4,63
4,07
4,08
4,00
4,09
Cooling capacity (2)
kW
21,02 (23,1*)
21,15 (23,1*)
26,90 (29,0*)
27,04 (29,1*)
36,21 (38,4*)
36,36 (38,3*)
Power input (2)
kW
6,48
6,35
9,1
8,96
12,49
12,45
EER. (2)
W/W
3,24
3,33
2,96
3,02
2,90
2,92
SEER (5)
W/W
3,98
4,00
4,03
Heating
Heating capacity (3)
kW
24,72 (27,2*)
24,57 (27,2*)
32,50 (35,1*)
32,65 (35,3*)
48,46 (51,4*)
48,25 (51,6*)
Power input (3)
kW
5,62
5,47
7,98
7,89
11,63
11,42
COP (3)
W/W
4,40
4,49
4,07
4,14
4,17
4,22
Heating capacity (4)
kW
22,18 (24,4*)
22,05 (24,4*)
32,20 (34,9*)
32,33 (35,1*)
41,26 (43,7*)
41,07 (43,5*)
Power input (4)
kW
6,46
6,33
9,89
9,80
12,2
12,07
COP (4)
W/W
3,43
3,49
3,26
3,30
3,37
3,40
SCOP (6)
W/W
3,83
3,82
3,82
Energetic class
Water temp. 35°C / 55°C
Class A+ / A++ A+ / A++ A+ / A++
Compressor
Brand
Mitsubishi
Mitsubishi
Mitsubishi
Type
Scroll DC Inverter
Scroll DC Inverter
Scroll DC Inverter
Number
1
1
2
Refrigerant oil (type, quantity)
mL FV50S, 2300 totale FV50S, 2300 totale FV50S, 4600 totale
Fan motor
Type
DC Brushless motor
DC Brushless motor
DC Brushless motor
Number
1
1
1
Rated power input (2)
kW
0,60
0,72
1,10
Max power input
kW
0,72
0,84
1,78
Max current input
A
1,22
1,42
2,57
Speed
r/min
540
580
670
Rated air flow
m3/s
3,90
4,10
6,90
Refrigerant
Type
R410A
R410A
R410A
Refrigerant quantity
kg
9,5
10
15,5
Equivalent amount of CO2
ton
19,84
20,88
32,36
Design pressure (high/low)
MPa
4,15/2,7
4,15/2,7
4,15/2,7
Hydraulic
circuit
Water flow rate (2)
L/s
1,00
1,01
1,28
1,29
1,73
1,72
Available head pressure (2)
kPa
/
88
/
81
/
70
Internal head loss (2)
kPa
30
34
48
Pump rated power input (2)
kW
/
0,27
/
0,31
/
0,44
Pump max power input
kW
/
0,31
/
0,31
/
0,55
Pump max current input
A
/
1,37
/
1,37
/
2,05
Hydraulic connections
inch
2”F
2”F
2”F
Minimum volume of water (7)
L
84
108
145
Energy Efficiency Index (EEI)
/
≤ 0,23
/
≤ 0,23
/
≤ 0,23
Noise level
Sound power (8)
dB(A)
70,1 / SL 68,3 / SSL 67,4
73,6 / SL 71,8 / SSL 70,9
76,5 / SL 74,5 / SSL 73,6
Sound pressure (9)
dB(A)
54,4 / SL 52,4 / SSL 50,7
56,5 / SL 54,7 / SSL 53,0
59,7 / SL 58,7 / SSL 56,5
Dimensions
and weight
Dimensions (L×H×W)
mm
1198x1673x1198
1198x1673x1198
1198x1745x1198
Packing dimensions (L×H×W) (10)
mm
1200x1765x1200
1200x1765x1200
1200x1890x1200
Operating weight
kg
357
363
384
391
422
436
Net/Gross weight
kg
349/369
355/375
376/396
382/401
414/434
428/448

18
WARNING: The minimum temperature allowed for storing the unit is 5°C.
12.2 PRODUCT FICHE AND TECHNICAL PARAMETERS ACCORDING TO REGULATION (EU) No 811/2013
PRODUCT FICHE – HP_OWER for low-temperature application (Tout: 35°C)
Supplier’s name
UNICAL A.G. spa
Model
HP_OWER 250
HP_OWER 350
HP_OWER 500
Seasonal space heating energy efficiency class
A++
A++
A++
Rated heat output
under average climate conditions
18 kW
23 kW
35 kW
under colder climate conditions
17 kW
22 kW
33 kW
under warmer climate conditions
19 kW
23 kW
38 kW
Seasonal space heating energy
efficiency
under average climate conditions
150 %
152 %
150 %
under colder climate conditions
113 %
104 %
107 %
under warmer climate conditions
193 %
177 %
180 %
Annual energy consumption
under average climate conditions
9984 kWh
12357 kWh
19182 kWh
under colder climate conditions
14400 kWh
19952 kWh
29309 kWh
under warmer climate conditions
5266 kWh
6752 kWh
11162 kWh
Annual energy consumption
in terms of final energy
under average climate conditions
25459 kWh
31501 kWh
48916 kWh
under colder climate conditions
36960 kWh
51315 kWh
75334 kWh
under warmer climate conditions
13369 kWh
17165 kWh
28370 kWh
Sound power level, indoors LWA
-
-
-
Sound power level, outdoors LWA
70 dB(A)
74 dB(A)
77 dB(A)
Precautions for installation and maintenance
Read precautions for installation and maintenance at
specific chapters on user’s and installation’s manual.
PRODUCT FICHE – HP_OWER for medium-temperature application (Tout: 55° C)
Supplier’s name
UNICAL A.G. spa
Model
HP_OWER 250
HP_OWER 350
HP_OWER 500
Seasonal space heating energy efficiency class
A+
A+
A+
Rated heat output
under average climate conditions
13 kW
23 kW
26 kW
under colder climate conditions
12 kW
22 kW
24 kW
under warmer climate conditions
14 kW
22 kW
27 kW
Seasonal space heating energy
efficiency
under average climate conditions
100 %
100 %
100 %
under colder climate conditions
81 %
83 %
74 %
under warmer climate conditions
130 %
113 %
110 %
Annual energy consumption
under average climate conditions
10662 kWh
18817 kWh
20948 kWh
under colder climate conditions
14082 kWh
24867 kWh
30795 kWh
under warmer climate conditions
5746 kWh
9999 kWh
12677 kWh
Annual energy consumption
in terms of final energy
under average climate conditions
27271 kWh
48434 kWh
53947 kWh
under colder climate conditions
36506 kWh
64425 kWh
80112 kWh
under warmer climate conditions
14696 kWh
25661 kWh
32558 kWh
Sound power level, indoors LWA
-
-
-
Sound power level, outdoors LWA
70 dB(A)
74 dB(A)
77 dB(A)
Precautions for installation and maintenance
Read precautions for installation and maintenance at
specific chapters on user’s and installation’s manual.

19
Technical parameters for heat pump low temperature (Tout: 35° C)
Model HP_OWER 250
Air-to-water heat pump:
Yes
Water-to-water heat pump:
No
Brine-to-water heat pump:
No
Low-temperature heat pump:
No
Equipped with a supplementary heater:
No
Heat pump combination heater:
No
Parameters are declared for low-temperature application.
Parameters are declared for average climate condition.
Item Symbol Value Unit Item Symbol Value Unit
Rated heat pump Prated 18 kW
Seasonal space heating energy
efficiency
ηs150 %
Declared capacity for heating for part load at indoor temperature 20°C
and outdoor temperature Tj
Declared coefficient of performance or primary energy ratio for part
load at indoor temperature 20°C and outdoor temperature Tj
Tj = -7°C Pdh 16,4 kW Tj = -7°C COPd2,36
Tj = +2°C Pdh 10,0 kW Tj = +2°C COPd3,69
Tj = +7°C Pdh 10,9 kW Tj = +7°C COPd5,24
Tj = +12°C Pdh 13,4 kW Tj = +12°C COPd5,94
Tj = bivalent temperature Pdh 16,4 kW Tj = bivalent temperature COPd2,36
T
j
= operation limit
temperature
Pdh 13,8 kW Tj = operation limit temperature COPd1,76
For air-to-water heat pumps: T
j
= -15°C
(if TOL < -20°C)
Pdh - kW
For air-to-water heat pumps: Tj =
-15°C (if TOL < -20°C) COPd-
Bivalent temperature Tbiv -7 °C
For air-to-water heat pumps:
Operation limit temperature
TOL -15 °C
Cycling interval capacity for
heating
Pcych 11,7 kW Cycling interval efficiency COPcyc 5,35
Degradation co-efficient Cdh 1,0 -
Heating water operating limit
temperature
WTOL 50 °C
Power consumption in modes other than active mode Supplementary heater
Off mode Poff 0,000 kW Rated heat output Psup - kW
Thermostat-off mode PTo 0,011 kW
Type of energy input -Standby mode PSB 0,011 kW
Crankcase heater mode PCK 0,000 kW
Other items
Capacity control variable
For air-to-
water heat pumps:
Rated air flow rate, outdoors - 18000 m3/h
Sound power level,
indoors/outdoors
LWA - / 70 dB(A)
For water- or brine-to-water heat
pumps: Rated brine or water flow
rate, outdoor heat exchanger
- - m3/h
Annual energy consumption QHE 9984 kWh

20
Technical parameters for heat pump low temperature (Tout: 35° C)
Model HP_OWER 350
Air-to-water heat pump:
Yes
Water-to-water heat pump:
No
Brine-to-water heat pump:
No
Low-temperature heat pump:
No
Equipped with a supplementary heater:
No
Heat pump combination heater:
No
Parameters are declared for low-temperature application.
Parameters are declared for average climate condition.
Item Symbol Value Unit Item Symbol Value Unit
Rated heat pump Prated 23 kW
Seasonal space heating energy
efficiency
ηs152 %
Declared capacity for heating for part load at indoor temperature 20°C
and outdoor temperature Tj
Declared coefficient of performance or primary energy ratio for part
load at indoor temperature 20°C and outdoor temperature Tj
Tj = -7°C Pdh 20,5 kW Tj = -7°C COPd2,12
Tj = +2°C Pdh 12,5 kW Tj = +2°C COPd4,09
Tj = +7°C Pdh 8,0 kW Tj = +7°C COPd4,80
Tj = +12°C Pdh 8,2 kW Tj = +12°C COPd5,89
Tj = bivalent temperature Pdh 20,5 kW Tj = bivalent temperature COPd2,12
T
j
= operation limit
temperature
Pdh 17,7 kW Tj = operation limit temperature COPd1,83
For air-to-water heat pumps: T
j
= -15°C
(if TOL < -20°C)
Pdh - kW
For air-to-water heat pumps: Tj =
-15°C (if TOL < -20°C) COPd-
Bivalent temperature Tbiv -7 °C
For air-to-water heat pumps:
Operation limit temperature
TOL -15 °C
Cycling interval capacity for
heating
Pcych 8,69 kW Cycling interval efficiency COPcyc 5,04
Degradation co-efficient Cdh 1,0 -
Heating water operating limit
temperature
WTOL 50 °C
Power consumption in modes other than active mode Supplementary heater
Off mode Poff 0,000 kW Rated heat output Psup - kW
Thermostat-off mode PTo 0,011 kW
Type of energy input -Standby mode PSB 0,011 kW
Crankcase heater mode PCK 0,000 kW
Other items
Capacity control variable
For air-to-
water heat pumps:
Rated air flow rate, outdoors - 20016 m3/h
Sound power level,
indoors/outdoors
LWA - / 74 dB(A)
For water- or brine-to-water heat
pumps: Rated brine or water flow
rate, outdoor heat exchanger
- - m3/h
Annual energy consumption QHE 12357 kWh