Orca ZEUS ZSW 230 Mounting instructions

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INSTALLATION, MAINTENANCE AND USER MANUAL
Domestic hot water heat pump
ORCA ZEUS ZSW 230 and ZSW 300
V1_2022

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Manuals are made for different series of devices. Because of that reason there could be some differences between
real parameters, dimensions or pictures.
We reserve the right to change the technical or any other specifications without notice and without liability. We do
not take responsibility for typographical errors.
This work is copyrighted. Any use outside the boundaries of the copyright law without the consent of Orca Energija
d.o.o. is illegal and punishable by law. With this release, all previous versions are invalid. liability. We do not take
responsibility for typographical errors.

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CONTENT
1BASIC INFORMATION ...................................................................................................................................2
2SAFETY WARNINGS......................................................................................................................................2
3IMPORTANT WARNINGS ..............................................................................................................................3
4PURPOSE OF THE DEVICE...........................................................................................................................5
5RESPONSIBILITY ...........................................................................................................................................5
5.1 Producer responsibility.........................................................................................................................5
5.2 Installer responsibility...........................................................................................................................5
5.3 User responsibility ................................................................................................................................5
6REFRIGERANT...............................................................................................................................................6
7RECYCLING....................................................................................................................................................6
8UNIT SPECIFICATIONS .................................................................................................................................7
9TRANSPORT AND DEPOT ............................................................................................................................8
10 UNIT DIMENSIONS.........................................................................................................................................9
11 UNIT INSTALLATION ...................................................................................................................................10
12 WATER CONNECTION ................................................................................................................................12
12.1 Galvanic cell.........................................................................................................................................13
13 TRIAL OPERATION......................................................................................................................................14
13.1 Confirmation before trial operation ...................................................................................................14
14 UNIT SETTINGS ...........................................................................................................................................15
15 OPERATION INSTRUCTIONS .....................................................................................................................15
15.1 Function of wire controller .................................................................................................................15
15.2 Operations............................................................................................................................................16
15.3 Turn ON/OFF the unit ..........................................................................................................................17
15.4 Mode selection .....................................................................................................................................18
15.5 Time setting..........................................................................................................................................19
15.6 In the vacation mode ...........................................................................................................................23
15.7 Electric heater setting .........................................................................................................................24
15.8 Fan mode setting .................................................................................................................................24
15.9 Keyboard locking.................................................................................................................................25
16 PCB BOARD CONNECTIONS .....................................................................................................................26
17 TROUBLESHOOTING ..................................................................................................................................26
18 ELECTRIC SCHEME ....................................................................................................................................27
27
18.1 Temperature sensor resistance .........................................................................................................28
19 UNIT COMPONENTS....................................................................................................................................29
20 MAINTENANCE, MALFUNCTION AND SOLUTIONS.................................................................................31
20.1 Maintenance by the user.....................................................................................................................31
20.2 Regular annual maintenance..............................................................................................................32
20.3 Malfunctions and resolutions.............................................................................................................32

User manual ZEUS
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1BASIC INFORMATION
•The enclosed installation, maintenance and user instruction manual contains all information for safe
installation, maintenance and use of the device. BEFORE USAGE, PLEASE READ THIS MANUAL
CAREFULLY!
•Store this instruction manual in a safe and dry place, if possible, somewhere near the unit. The installation
manual must be kept in full legible condition during the lifespan of the device.
•The device must be installed and connected according to this manual. IF YOU ARE NOT ABSOLUTELY
SURE, THAT THE DEVICE IS CORRECTLY INSTALLED AND CONNECTED, DO NOT TURN THE DEVICE ON!
•Maintenance must be regularly carried out in time intervals, prescribed by the manufacturer.
Maintenance can only be carried out by suitably qualified and authorized service personnel. INADEQUATE
AND UNAUTHORISED MAINTENANCE LEADS TO THE LOSS OF WARRANTY RIGHTS!
•The installer is obliged to explain to the end user how the device is properly used and maintained in
accordance with this manual.
•THE MANUFACTURER SHALL NOT BE LIABLE FOR ANY DAMAGE CAUSED BY IMPROPER OPERATION OF
THE DEVICE AS A RESULT OF IMPROPER INSTALLATION AND MAINTENANCE!
•The manufacturer reserves the right to modify the installation, maintenance and user manual without
prior notice. If you lose or damage the manual (in unreadable condition), contact the manufacturer or the
retailer where you purchased the device.
2SAFETY WARNINGS
Read the instructions bellow carefully. In order to avoid any damage to persons, animals or plants, use the
device only in accordance with the instructions. The magnitude of danger is highlighted by graphic symbols
with the corresponding description.
WARNING!
Failure to follow the instructions can lead to injury or damage to the device. Failure to follow the
instructions will lead to a loss of warranty.
DANGER!
Failure to follow the instructions can lead to injury or damage to the device. Improper use can lead
to serious injury or even death. Improper use can be harmful to humans, animals and the
environment.
DANGER!
Failure to follow the instructions can lead to serious injuries or even death due to an electric shock.
DANGER!
Failure to follow the instructions can lead to device ignition or fire.
DANGER!
Failure to follow the instructions can lead to serious injuries to the extremities.
DANGER!
Failure to follow the instructions can lead to serious burns.
DANGER!
Exposure to specific device parts or refrigerant can lead to frostbite.
DISPOSAL INSTRUCTIONS!
NOTE
Contains useful information and recommendations.

User manual ZEUS
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3IMPORTANT WARNINGS
WARNING!
The unit can only be used for purposes prescribed by the manufacturer.
WARNING!
Only an adult person acquainted with the content of this manual, can operate the device.
DANGER!
Unit Installation, first start-up, service and maintenance must be performed by a qualified installer and always
in non-electrically supplied condition.
NOTE
Install the device in a room/place, where there is enough space left around the device for cleaning and
maintenance purposes. Consider the space for installation (recommended space requirements).
DANGER!
Never incline the device for more than 30°from its vertical position or transport/carry it by hand. To move the
device, use only proper transport equipment.
WARNING!
Do not install the unit in a space where the temperature can fall below 0°C, water in the pipes and unit can
freeze and cause damage to the unit or pipes.
WARNING!
The unit must be installed in a dry space, if it is exposed to direct sunlight, it must be protected from it.
DANGER!
During operation it is forbidden to move, clean or repair the unit.
DANGER!
Do not put any object below or on the unit.
WARNING!
Connect the unit to the system using removable pipe unions, so that the unit can be easily moved or removed
in case of a service intervention without the need of a greater intervention in the piping system.
DANGER!
If the intended installation location of heat pump is in room, where there is a lot of dust or ash, possibility of
leakage of volatile and flammable or other undesirable substances, wood or pellet stove, it is required to
ensure air intake for the heat pump from another room. Ash and dust are deposited on the evaporator, which
can lead to disturbances in operation or damage to the heat pump.
DANGER!
Non-
return valve and dirt trap are necessary to install on the inlet tube. Also, it is necessary to install
appropriate expansion vessel. It is MANDATORY to install safety valve (0,6 MPa) on the hot water outlet tube.
Maximum allowed supply pressure is 0,4 MPa.
WARNING!
When connecting the unit to the heating system it is necessary to prevent the formation of a galvanic couple
and related corrosion. To connect the unit to the heating system it is MANDATORY to use the enclosed
transition pieces, also the piping system MUST be electrically grounded. In case of failure due to improper
device connection the manufacturer will take no liability or warranty.
DANGER!
In case of power supply cable damage, smoke, unusual smell from unit or any other abnormality in operation,
immediately disconnect the power supply cable from the supply and contact an authorized customer service.
DANGER!
Do not insert your fingers through the intake/exhaust gratings. Rotating parts of the device can injure you.
DANGER!
The unit requires reliable grounding during operation, otherwise serious injuries or even death may occur.
DANGER!
The unit needs to be connected to the power supply protected with the prescribed fuse.

User manual ZEUS
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DANGER!
In the event of damage to the connecting cable, i
t must be replaced with original cable, provided by
manufacturer or authorized customer service.
DANGER!
Do not use or store flammable materials near the unit
DANGER!
Water with temperature above 50°C can cause injuries, when set temperature is higher than 50°C be careful
when children and other users are using hot water.
DANGER!
Evaporator operates at low temperature. Touching it can cause frostbite.
DANGER!
Never damage or rupture the refrigerant piping. Refrigerant leakage can cause serious frostbite.
DISPOSAL INSTRUCTIONS!
The unit must be replaced and disposed according to local regulations; it contains environment potentially
harmful gasses.

User manual ZEUS
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4PURPOSE OF THE DEVICE
The device is an air/water heat pump with a water storage tank below. Its primary task is to heat sanitary
water – the cooling effect on the surroundings is a side effect. The heat pump needs to be set in a sufficiently
large and ventilated room with an enough high air temperature (basement, pantry) from which it will take the
energy for its operation. The heat pump draws 75% of the necessary heat from the air, the rest is provided by
the electrical power that drives the high-quality rotary compressor. The sanitary water is heated through a
refrigerant heat exchanger (condenser) bended around the water storage tank. The water storage tank is
made from steel with vacuum enameled protective coating. Its volume can be 230 or 300L. The 230L unit is
meant to be installed in a building with a daily consumption not more than 500L per day and 300L unit in a
building with consumption not more than 700L per day.
WARNING!
Injuries and resulting damage to the device or third things, which are caused due to misuse and
improper use of the device, are the users sole responsibility.
5RESPONSIBILITY
5.1 Producer responsibility
As a producer we accept no responsibility if:
-The installation and user manuals were not considered properly.
-Unit was not correctly or enough maintained.
5.2 Installer responsibility
Installers take responsibility that the unit is installed and commissioned in accordance with the next
requirements:
-Read the complete installation and user manuals.
-Installation of the unit must be performed according to national standards and laws.
-Performs commissioning and solves any problems that occurred during the installation and first startup.
-Explains to the customer proper usage, settings and needed unit maintenance.
5.3 User responsibility
User needs to consider next requirements for proper unit operation:
-Read the complete installation and user manuals.
-Installation and first startup must to be performed by a professional and authorized installer.
-Regular service from an authorized person needs to be allowed / ordered.
-Keep these manuals in a safe dry place, somewhere near the unit.
-For any uncertainty ask the installer for explanation.
-Any modifications or replacement of components of the heat pump EXCLUDES LIABILITY of the
manufacturer for the safety and functionality. In case of misuse and improper use of the device, the
manufacturer does not accept liability. Injuries and resulting damage to the device or third things, which
are caused due to misuse and improper use of the device, are the users sole responsibility.

User manual ZEUS
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6REFRIGERANT
The unit is prefilled with HFC R134a refrigerant. The refrigerant is non-toxic, non-flammable and not explosive,
is also not harmful to the ozone layer, but is heavier than air, which can lead to a crowding-out of air from the
area. The result may be smaller concentration of oxygen in the air, but because of a very small amount of
refrigerant in the unit, there are no serious health risks. A reduced concentration of oxygen can occur only in
unventilated areas less than 10 m3 volume. Nevertheless, we recommend that you read the manufacturer's
refrigerant safety sheet and handle in accordance with the written instructions.
DANGER!
Refrigerant leakage can cause serious frostbite. In case of refrigerant leakage immediately
disconnect power supply and inform the authorized customer service. Do not approach the device,
only when necessary (to disconnect the power supply).
7RECYCLING
1. Waste Product: Consult the manufacturer regarding recycling or disposal.
2. Contaminated packaging: reuse or recycle after decontamination.
3. Removing the refrigerant must be performed in accordance with EC Directive 842/2006, as well as other
national and local regulations.
DISPOSAL INSTRUCTIONS!
The unit must be replaced and disposed according to local regulations; it contains environment
potentially harmful gasses.

User manual ZEUS
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8UNIT SPECIFICATIONS
MODEL ZSW 230 (0) 230 (1) 300 (0) 300 (1) 300 (2)
Nominal heating power kW 1,8 1,8 1,8 1,8 1,8
Max. heating power (Compressor+el.
heater)
kW 3,6 3,6 3,6 3,6 3,6
Compressor nominal power
consumption
kW 0,5 0,5 0,5 0,5 0,5
Compressor typ rotary rotary rotary rotary rotary
Coefficient of performance W/W 3,0 3,0 3,1 3,1 3,1
Electric heater power kW 1,8 1,8 1,8 1,8 1,8
Power supply f/Hz/V 1/50/230 1/50/230 1/50/230 1/50/230 1/50/230
Degree of protection IPX IPX2 IPX2 IPX2 IPX2 IPX2
Refrigerant/quantity Typ/g R134a /
1000
R134a /
1000
R134a /
1000
R134a /
1000
R134a /
1000
Tank volume L 230 230 300 300 300
Surface of bottom heat exchanger m2 / 0,5 / 1 1
Surface of upper heat exchanger
(optional)
m2
/ / / / 0,5
Air flow m3/h 500 500 500 500 500
Air connection dimensions mm 150 150 150 150 150
Maximal length of air ducts m 10 10 10 10 10
Unit dimensions D x H
(mm)
670 x
1550
670 x
1550
670 x
1820
670 x
1820
670 x
1820
Max. water outlet temperature °C 60°C 60°C 60°C 60°C 60°C
Working range °C -3~35 -3~35 -3~35 -3~35 -3~35
Water connection dimensions ˝ 3/4 3/4 3 /4 3 /4 3 /4
Unit net weight kg 110 110 130 (140) 130 (140) 130 (140)
* According to SIST EN16147 standard

User manual ZEUS
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9TRANSPORT AND DEPOT
DANGER!
The device can only be moved or transported in non-electrically supplied condition.
WARNING!
The aggregate of the device is attached on the top of the water storage tank and it is
protected with a plastic cover. The cover must not be used as a holding or support point
when the unit is being transported.
WARNING!
THE DEVICE MUST BE PROPERLY PROTECTED WITH COMPULSORY PROTECTIVE BELTS WHEN
TRANSPORTED IN ORDER TO PREVENT JUMPING, MOVING OR OVERTURNING.
WARNING!
Before transport the device must be properly protected by protective foil or cardboard to avoid
damage such as scrapes, abrasions and holes.
WARNING!
Because of the device’s construction (the aggregate being on top) there is a high risk of the
device overturning during transport. The max incline of 30° must not be exceeded.
WARNING!
Do not exceed the maximum inclination of 30° from vertical.
WARNING!
The allowed temperature during transport and depot is between 10 and 45°C. During shorter
periods of time (up to 24h), a higher temperature is allowed (up to 55°C).
DANGER!
Because of the devices weight there is a high risk of injury to the extremities when moving the
device. When moving the device, only use proper transport equipment.
WARNING!
For damage to the device, due to improper depot and transport, the manufacturer will take no
liability!