Ochsner EUROPA Mini IWPL Specification sheet

TRANSLATION OF THE ORIGINAL MANUAL
OPERATING AND
INSTALLATION MANUAL
►
EUROPA Mini IWPL

BIA-EUROPA Mini IWPL-EN11 | www.ochsner.com 3
CONTENTS
PLEASE NOTE
OPER ATION
1. Information on documentation 4
1.1 Safety information 4
1.1.1 Arrangement of safety information 4
1.1.2 Symbols and possible dangers 4
1.1.3 Keywords 4
1.2 Other symbols 5
1.3 Units of measurement 5
1.4 Specied performance gures 5
2. Safety 5
2.1 Intended use 5
2.2 General safety information 5
3. Appliance description 6
3.1 Name plate 6
3.2 Temperature sensors 6
4. Making settings 6
4.1 Digital control unit 6
4.1.1 Control buttons 7
4.2 Switching the heat pump on and o󰀨 7
4.3 Charging pump relay test 7
4.4 DHW 8
4.4.1 Setting the target DHW temperature 8
4.5 Anti-legionella mode 8
5. Maintenance and care 10
6. Problem solving 10
INSTALLATION
7. Safety 10
7.1 General safety information 10
7. 2 Regulations, provisions and standards 10
8. Appliance description 10
8.1 Scope of delivery 10
8.2 Heating coil 10
9. Preparing to install the appliance 10
9.1 Installation location 11
9.1.1 Maintaining minimum clearances 11
9.2 Preparing heat source connection 11
10. Appliance installation 12
10.1 Delivery and transportation 12
10.1.1 Positioning the appliance 12
10.2 Connecting heat source system 12
10. 2.1 Condensate drain 12
10.3 Connecting the heat sink system 12
10.3.1 Connecting cold water and DHW 13
10.4 Electrical connection 13
10.4.1 General 13
10.4.2 Connection of control sensor 13
11. Commissioning 13
11.1 Before initial start-up 13
11. 2 Decommissioning 14
12. Rectifying faults 15
12.1 Fault messages on controller display 16
13. Appliance maintenance 17
13.1 Service interval 17
13.2 Removing the cowl 17
13.3 Descaling the DHW tank 17
13.3.1 E󰀨ect of water quality 18
13.4 Customer service 18
13.5 Maintenance contract 18
14. Specication 20
14.1 Data table 20
14.2 Control 22
14.3 NTC temperature sensor 22
14.4 Graphs 23
14.5 Details of energy consumption 23
14.6 System schematic diagrams 24
14.7 Voltage quality in isolated mode 26
14.8 Dimensions and connections 27
15. Environment and recycling 28
16. Declaration of Conformity 29

PLEASE NOTE | Information on documentation
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PLEASE NOTE
fThe appliance may be used by children aged 8 and
up and people with reduced physical, sensory or
mental capabilities or a lack of experience provided
that they are supervised or that they have been in-
structed on how to use the appliance safely and have
understood the possible risks. Children must not be
allowed to play with the appliance. Children must not
be allowed to clean or carry out user maintenance on
the appliance without supervision.
fIf you connect the appliance permanently to a power
supply, it must be connected via a device with an iso-
lating distance of at least 3 mm to allow the appliance
to be disconnected from the mains on all poles.
fThe appliance is not approved for outdoor installation.
fWhen installing, observe the applicable national and
regional regulations and instructions.
fObserve the minimum clearances in order to ensure
fault-free operation of the appliance and to allow for
maintenance work on the appliance.
OPERATION
1. Information on documentation
The “Please note” and “Operation” sections are intended
for the appliance user and the qualied contractor.
The “Installation” section is intended for the qualied con-
tractor.
Unless otherwise stated, all the content of this documenta-
tion applies to the appliances listed on the title page. This
documentation describes appliances that are not always
in the standard scope of delivery. Therefore there may be
di󰀨erences to your specic appliance.
Information
Read all of this documentation carefully before us-
ing the appliance and keep the documents safe.
Pass this documentation on to any new user.
1.1 Safety information
1.1.1 Arrangement of safety information
KEYWORD: Type of risk
The possible consequences of not observing the
safety information are shown here.
»
Instructions for action to remedy or remove
the source of danger are shown here.
1.1.2 Symbols and possible dangers
Symbol Type of risk
Injury
Electrocution
Burns
(burns, scalding)
Material damage
(appliance, consequential and environmental dam-
age)
1.1.3 Keywords
Keyword Meaning
DANGER Failure to observe this information will result in seri-
ous injury or death.
WARNING Failure to observe this information may result in se-
rious injury or death.
CAUTION Failure to observe this information may result in
non-serious or minor injury.

OPERATION | Safety
BIA-EUROPA Mini IWPL-EN11 | www.ochsner.com 5
1.2 Other symbols
►This triangular symbol is used as a bullet point.
»
These two arrows represent the symbol for an in-
struction. This shows that there is something you
must do. The actions required are described step by
step.
 These symbols show you the level of a software
menu. In this example, 3 menu levels are
indicated.
Symbol Notes
Must not be disposed of with household waste
Additional documents are available and must be
used
1.3 Units of measurement
Information
In these documents, unless otherwise specied, all
lengths (e.g. in tables and illustrations) are given
in millimetres.
1.4 Specied performance gures
The performance gures of the appliance indicated in
these documents (text, tables and diagrams) have been
calculated according to standardised measurement con-
ditions. However, these measurement conditions often do
not completely correspond to the plant-specic conditions
applicable in the respective user’s system. System-specic
factors that can a󰀨ect the conditions include, for example,
the specic design of the system, the age of the system
and the actual ow rates. For this reason, the stated perfor-
mance gures can di󰀨er from plant-specic performance
data.
The stated performance gures can be conrmed only
if the measurements taken for the appliance are carried
out according to the relevant standardised measurement
conditions.
2. Safety
2.1 Intended use
The appliance is intended for heating DHW in a domestic
environment. It can safely be used by people who have re-
ceived no instruction. The appliance can similarly be used
in a non-domestic environment such as commercial prem-
ises, as long as it is used in the same intended manner.
Any use of the appliance that is di󰀨erent from or goes
beyond this is not regarded as intended use. “Intended
use” also includes observing this documentation and the
documentation of any accessories used.
2.2 General safety information
Observe the following safety information and instructions
for the appliance.
►Only qualied contractors should carry out the elec-
trical work and installation of this appliance. Only
qualied contractors may open the appliance.
►Commissioning and maintenance of the appliance
may be carried out only by OCHSNER Customer Ser-
vice or by customer service partners authorised by
OCHSNER.
►The qualied contractor is responsible for compliance
with all relevant regulations during installation and
commissioning.
►Only operate the appliance when it is fully installed
and with all safety devices tted.
►Alterations to the appliance may only be carried out
by OCHSNER Customer Service or by customer ser-
vice partners authorised by OCHSNER.
►Before commencing electrical connection and instal-
lation work, the heat pump system must be isolated
from the power supply.
►The appliance must not be used as a step or plat-
form. Do not climb on the appliance or place any
loads on it.
►The water in the DHW tank can be heated to temper-
atures above 60°C. If the outlet temperature exceeds
43°C, there is a risk of scalding. Make sure that you
do not come into contact with the discharging water.
WARNING: Burns
Work on the refrigerant circuit may be carried out
only by OCHSNER Customer Service or by cus-
tomer service partners authorised by OCHSNER.

OPERATION | Appliance description
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WARNING: Electrocution
Contact with live components is life threatening.
Damage to the insulation or individual components
can be life threatening.
»
If the insulation is damaged, switch o󰀨 the
power supply and arrange for the appliance to
be repaired.
WARNING: Injury
The appliance may be used by children aged 8 and
up and people with reduced physical, sensory or
mental capabilities or a lack of experience provided
that they are supervised or that they have been
instructed on how to use the appliance safely and
have understood the possible risks. Children must
not be allowed to play with the appliance. Children
must not be allowed to clean or carry out user
maintenance on the appliance without supervision.
3. Appliance description
The appliance is a hot water heat pump and is designed
for installation in existing water heating systems. The ap-
pliance is a split appliance suitable for external DHW tanks
with a capacity of up to 500 litres.
The heat pump’s heating output is sized for supplying
DHW to households of up to 5 people. When installing the
appliance, it is important to check whether any existing
DHW tank is su󰀩ciently sized to cover short-term water
consumption requirements.
The hot water heat pump with energy extraction from the
air is a multifunctional appliance. The appliance can be
used, for example, for air conditioning or dehumidication
of a room (e.g. storage cellar) or for mechanical ventilation
from wet rooms.
An electric immersion heater or a boiler can be used as an
alternative method of heating the water.
At average operating conditions, the heat pump heats the
DHW tank (~300 l) from +10°C to +52°C within 9 hours.
Material damage
If you disconnect the appliance from its power sup-
ply, it is not protected against frost and corrosion.
»
Do not interrupt the power supply of the appli-
ance.
Material damage
The thermal output of the heat pump is depend-
ent on the temperature of the heat source (supply
air) and the set DHW temperature. Its suitability
for use with a 500 l DHW tank must be assessed
in advance by the system installer (all-year-round
source temperature >15°C). OCHSNER accepts
no liability for planning errors.
3.1 Name plate
To identify your heat pump, a name plate is attached to the
upper right-hand casing section of the heat pump on the
outside of the appliance.
3.2 Temperature sensors
The temperature sensors used are of the NTC resistor
type.
Desig-
nation
Description
F1 Control temperature sensor for the heat pump, charging
pump and collector pump. Detection of temperature T1
in the centre of the DHW tank.
F2 Frost protection sensor
4. Making settings
4.1 Digital control unit
The heat pump is monitored and controlled via a digital
control unit.
The digital control unit consists of display units, control
buttons and controllers.
►Settings are made using the 5 control buttons on the
appliance.
►The display unit consists of 3 LED lights and a 3-digit
7-segment display.
The user can select an “operating program” and input “tar-
get values”.
Operating program
Heat pump OFF AUTOMATIC
Anti-legionella
mode
OFF AUTOMATIC
TARGET VALUES
DHW target value
(S1)
52.0°C 5.0°C to 65.0°C
Anti-legionella
mode target value
(S2)
60.0°C 5.0°C to 65.0°C

OPERATION | Making settings
BIA-EUROPA Mini IWPL-EN11 | www.ochsner.com 7
TARGET VALUES
Anti-legionella
mode interval (t1)
0 0 days to 14 days
1 Up button
2 Down button
3 SET button
4 Charging pump button
5 Power button
6 Display of actual water temperature
7 LED heat pump status
8 LED status, charging pump
9 LED status, anti-legionella mode
4.1.1 Control buttons
Button Function when button is pressed
Up button Adjusting/raising target values
Down button Adjusting/lowering target values
SET button Calling up target value/inputting settings
Charging
pump button
Press the button (min. 2 s) to switch the charging
pump on or off
Power button Press the button (min. 2 s) to switch the heat pump
on or off
4.2 Switching the heat pump on and o󰀨
»
Press and hold the On/O󰀨 button for at least
2 seconds.
1 LED heat pump status
LED off: Heat pump switched off
LED flashes: Heat pump switched on
There is a heat demand
Heat pump in heating mode
LED illuminat-
ed:
Heat pump switched on
There is no heat demand
Heat pump not in heating mode. (Standby mode)
►The set target value S1 has been reached
►Compressor downtime (20 minutes) is active
Material damage
If you disconnect the appliance from its power sup-
ply, it is not protected against frost and corrosion.
»
Do not interrupt the power supply of the appli-
ance.
4.3 Charging pump relay test
»
Press and hold the charging pump button for at least
2 seconds.
1 LED status, charging pump
LED off: Charging pump switched off
LED flashes: Charging pump operating

OPERATION | Making settings
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4.4 DHW
4.4.1 Setting the target DHW temperature
»
Press and hold the SET button.
The current target value is displayed.
»
Adjust the target value by pressing the Up and Down
buttons.
The new target value of 55.0°C is set.
»
Release the SET button.
The actual temperature is displayed again.
Information
To save energy, we recommend a DHW temper-
ature of 52°C.
4.5 Anti-legionella mode
On the control unit, once-only heating of the DHW can be
programmed to be carried out at adjustable intervals (days)
t1. The heat pump then heats the DHW to the selected
target value S2. If the target value is not achieved within 4
hours, the program terminates the heating cycle.
Information
In order for the heat pump to operate correctly in
anti-legionella mode, it must always be supplied
with power (220-240 V). After a power failure, the
heat pump immediately starts in anti-legionella
mode when the power supply is restored.
Example
►Adjusting the anti-legionella temperature from 60.0°C
to 65.0°C
►Interval period 7 days
»
Press and hold the Up and Down buttons for at least
3 seconds.
»
Press and hold the SET button.

OPERATION | Making settings
BIA-EUROPA Mini IWPL-EN11 | www.ochsner.com 9
»
Set the target value.
»
Press the Up button.
»
Press and hold the SET button.
»
Set the interval period (days).
»
Press and hold the Up and SET buttons for at least
3 seconds.
1 LED status, anti-legionella mode
LED off: No anti-legionella mode active
LED flashes: Anti-legionella mode
LED illuminat-
ed:
Anti-legionella mode in standby
The set target value S2 has been
reached
Information
To change the interval for the anti-legionella mode,
it must be deactivated rst (t1=0). The new interval
period can then be set.
Param-
eter
Function descrip-
tion
Setting range Default value
52 Target for anti-le-
gionella mode
5°C to 65°C 60.0°C
t1 Interval period for an-
ti-legionella mode
0 to 14 days
0 = no anti-le-
gionella mode
0 = deacti-
vated

INSTALLATION | Maintenance and care
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5. Maintenance and care
We recommend having your heat pump inspected annu-
ally and, if necessary, serviced by OCHSNER Customer
Service.
Material damage
Maintenance work on electrical components of the
heat pump may only be carried out by qualied
contractors.
»
If it is necessary to clean the casing sections of the
appliance, use only a damp cloth (with water or a
weak soapy solution). Do not use any abrasive or ag-
gressive cleaning materials.
»
If the casing sections are heavily soiled, use methyl
alcohol.
6. Problem solving
The digital control unit displays any occurring faults. (See
page 15, Rectifying faults)
If a fault occurs, contact your system installer. The system
installer knows your hydraulic system and how it operates.
The causes of faults can often be found in the settings or
in the hydraulics.
Before contacting the installer, make a note of the seri-
al number and the heat pump model. The serial number
and heat pump model of your appliance are shown on the
name plate. The name plates are attached to the upper
right-hand casing section of the heat pump on the rear of
the appliance.
INSTALL ATION
7. Safety
Only a qualied contractor should carry out installation,
commissioning, maintenance and repair of the appliance.
7.1 General safety information
We guarantee trouble-free function and operational reliabil-
ity only if the original accessories and spare parts intended
for the appliance are used.
7. 2 Regulations, provisions and standards
Information
Observe all applicable national and regional regu-
lations and provisions.
8. Appliance description
8.1 Scope of delivery
The scope of delivery of your appliance includes the fol-
lowing components.
►Hot water heat pump EUROPA Mini IWPL
►2 wall brackets (525 mm height x 700 mm projection)
incl. rubber pads
►Sensor pocket
►1 cable temperature sensors
8.2 Heating coil
Connecting the heat pump to a coil is generally not permit-
ted! However, the heat pump can be connected if the coil
(heat exchanger) is appropriately sized.
9. Preparing to install the
appliance
Before installing the appliance, preparatory work needs to
be carried out by qualied contractors.

INSTALLATION | Preparing to install the appliance
BIA-EUROPA Mini IWPL-EN11 | www.ochsner.com 11
9.1 Installation location
Material damage
The intake air must not be contaminated with corro-
sive substances (ammonia, sulphur, chlorine, etc.)!
Machine components may be destroyed! The ap-
pliance is therefore not suitable for operation in
wine cellars, sewage treatment plants and animal
stables.
Material damage
The appliance is intended only for indoor instal-
lation. It must not be installed in rooms with high
levels of humidity (permanently above 70%).
Information
The installation of the heat pump must be carried
out by an authorised contractor.
The installation location for the appliance must meet the
following requirements:
►A dry and frost-free room
►No lighting xtures or pipes must be mounted above
the appliance.
►Horizontal oor
►Load bearing oor
►Max. room temperature 40°C
Thanks to its lightweight design, it can also be wall mount-
ed (accessories). One particularly e󰀨ective method of
installation is to use the wall brackets which are available
as original accessories.
The installation site should be positioned as close as pos-
sible to the draw-o󰀨 points, especially for draw-o󰀨 points
with small amounts of hot water, such as kitchens. In or-
der to prevent continuous energy losses, DHW circulation
pipework should not be installed. The DHW tank must be
kept frostproof together with the subsequent pipework and
valves.
9.1.1 Maintaining minimum clearances
Observe the following minimum clearances:
►Front: min. 1000 mm
►Cover: min. 450 mm above
►Rear: min. 200 mm
►To sides: min. 500 mm each
Observing the specied minimum clearances for the ap-
pliance ensures:
►Correct installation of the appliance.
►That it operates fault-free.
►Ability to carry out maintenance on the appliance.
9.2 Preparing heat source connection
Material damage
For operation in winter and when connected to out-
door air, the heat pump application limit is +7°C.
The air extraction point should be selected taking into ac-
count a high average air temperature and the required air
volume. The output decreases when the temperature and
air volume change.
1 Air inlet
2 Air outlet (expelled air)
The minimum pipe diameter for exhaust and supply air
connections (ventilation system) must be observed (spiral
pipe). The pipe system should be laid as straight as pos-
sible and avoiding sharp bends.
►Max. total pipe length for supply and extract air: 20 m
►No more than 3 right-angled bends are permitted.
►For each additional right-angled bend, the total pipe
length must be reduced by 1 m.
To prevent condensate from escaping, the air pipes must
be laid horizontally or at a slight downward inclination to-

INSTALLATION | Appliance installation
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wards the suction/discharge openings, or an evaporation
bag must be installed.
Material damage
If exhaust lines are routed outdoors, an inow of
cold air must be prevented when the heat pump is
not running.
»
Install an overpressure ap for outdoor instal-
lation (with low resistance).
10. Appliance installation
10.1 Delivery and transportation
The heat pump is delivered ready to install, i.e. fully wired
on a one-way pallet, wrapped in lm.
Information
Should you notice any transportation damage to
the appliance, you must report such damage im-
mediately when the delivery is unloaded. Claims
for transportation damage cannot be made sub-
sequently.
Material damage
»
Protect the appliance from damage by using
lifting slings.
»
When transporting, protect the appliance from
impact.
Material damage
»
Make sure that the appliance cannot fall over.
»
Only place the appliance on level ground.
►The heat pump should be stored and transported in
its packaging.
►Over short distances, you may transport the appli-
ance carefully at an angle of up to 45°.
►The standard packaging of the appliance does not
provide protection against the weather or sea water.
►The appliance may be stored and transported only at
temperatures of between -20°C and +45°C.
WARNING: Injury
»
During transport, observe the weight of the
appliance.
»
Use suitable transport aids (e.g. a sack truck)
for transport.
»
Make sure that su󰀩cient personnel are pres-
ent during transport.
Please note the following when moving the appliance:
»
Do not unpack the appliance until it has been moved
to the installation site.
»
Transport the appliance with a sack truck.
Material damage
The upper appliance casing (cowl) cannot with-
stand high forces.
»
When transporting with the transport packag-
ing removed, make sure that you do not lift or
support the appliance by the cowl.
10.1.1 Positioning the appliance
»
Position the appliance at the intended installation
location.
»
Observe minimum clearances.
Material damage
Improper installation of the appliance may cause
vibration, noise and consequential damage.
»
Make sure that the system has been erected
vertically.
10.2 Connecting heat source system
10. 2.1 Condensate drain
Material damage
The condensate drain must not be permanently
connected to a drain. The ammonia vapours rising
from the drain destroy the heat exchanger ns and
heat pump components.
»
Install a funnel with siphon trap.
Condensation is separated by cooling the air in the evap-
orator. The condensate drain at the rear of the heat pump
must be channelled away from the heat pump with plastic
pipes, and unhindered drainage of the condensate must be
ensured. Depending on the air volume and humidity, con-
densate can accumulate at a rate of up to approx. 0.3 l/h.
10.3 Connecting the heat sink system
Information
The hydraulic connection from the heat sink system
(WNA) to the heat pump may be made only by a
qualied contractor.
Information
For maintenance purposes, a shut-o󰀨 valve should
be tted to every hydraulic line close to the connec-
tion point on the heat pump.
Material damage
The DHW tank must be completely lled before
commissioning.
»
Dry running will destroy the integral charging
pump.

INSTALLATION | Commissioning
BIA-EUROPA Mini IWPL-EN11 | www.ochsner.com 13
Material damage
The water connections on the appliance must be
sealed with at gaskets and electrically insulating
to protect against corrosion. Sealing the water con-
nections with hemp is not permitted.
»
Use electrically insulating threaded tting to
connect the building installation pipes to the
water connections on the appliance.
Material damage
Observe the delivery head of the integral charging
pump. The total pressure loss of the connection
line must not exceed 0.5 m.
10. 3.1 Connecting cold water and DHW
Information
Observe all applicable national and regional regu-
lations and provisions.
»
Install a type-tested safety valve and a non-return
valve on site.
»
Connect the cold water supply.
»
Connect the DHW connection.
»
If necessary, install a pressure reducing valve and a
lter in the supply line as per local guidelines.
»
Make sure that there is a venting possibility (opening
the DHW valve).
Material damage
Before commissioning, the DHW tank must be
completely lled.
The heat pump is equipped with a plate heat exchanger.
The water in the tank can be heated via the plate heat ex-
changer by means of the installed circulation pump.
Fresh water is not permitted to enter via the plate heat
exchanger as it is not designed as an instantaneous water
heater.
10.4 Electrical connection
10.4.1 General
WARNING: Electrocution
Before commencing electrical connection and
installation work, the heat pump system must be
isolated from the power supply.
WARNING: Electrocution
Work on electrical connections and installation may
only be carried out by qualied contractors.
WARNING: Electrocution
Before commissioning, the necessary fault pro-
tection measures on the system and the earth
connection must be checked by a qualied con-
tractor.
Information
It is essential that the regulations of the responsible
power supply utility (PSU) and the applicable EN
standards are observed.
Information
The values specied in this documentation for
circuit protectors and cable cross-sections are
guideline values. The qualied contractor carrying
out the work is responsible for plant-specic sizing
of safety devices and cable cross-sections.
OCHSNER does not accept liability for faults resulting from
incorrectly designed safety devices!
We recommend connecting the power supply via its own
RCD. The hot water heat pump is equipped as standard
with a 2 m mains power cable for 220-240 VAC/50 Hz.
10.4.2 Connection of control sensor
The control sensor is connected to terminals 1-2 on the
rear of the heat pump. The control sensor is installed in
the DHW tank in the supplied sensor pocket.
Material damage
Never apply voltage to the sensor terminals. This
would irreparably damage the heat pump! OCHS-
NER accepts no liability for this.
WARNING: Electrocution
Connection work which requires junction boxes to
be opened must be carried out by an authorised
contractor, as there is a risk to life when working
on live components!
11. Commissioning
Information
Commissioning may only be carried out by an au-
thorised company!
11.1 Before initial start-up
»
Make sure that no one can be put at risk during the
initial start-up.
»
Make sure that the installation tasks on the heat
pump have been completed professionally.

INSTALLATION | Commissioning
14 www.ochsner.com | BIA-EUROPA Mini IWPL-EN11
»
Ensure that the DHW tank is lled with su󰀩cient
water.
»
Make sure that the system allows venting (DHW
valve) and has been fully vented.
»
Make sure that the electrical installation has been
carried out and completed professionally.
»
Before commissioning, check the system has been
correctly installed and connected in accordance with
the relevant installation instructions.
»
Observe all applicable national and regional regula-
tions and provisions.
11.2 Decommissioning
Should you wish to deactivate your heat pump system,
switch o󰀨 the heat pump system using the controller. This
way, safety functions such as frost protection remain active.
Material damage
If the power supply to the heat pump system is
interrupted and there is a risk of frost, drain the
system on the water side.

INSTALLATION | Rectifying faults
BIA-EUROPA Mini IWPL-EN11 | www.ochsner.com 15
12. Rectifying faults
Error Possible cause Remedy
DHW temperature too low Water consumption too high Reduce consumption
Thermostat not on max. Turn up thermostat
Outdoor air too cold → Heating output too
low
Switch on auxiliary heater (if available)
DHW circulation in continuous operation Check time switch, check thermostat and non-return valve
Non-return valve sticks Loosen
Heating gate valve open Close gate valve
Compressor running and fan not
running
Start capacitor defective Replace; contact customer service
Winding damage Replace; contact customer service
Compressor and fan run without
heating the water
No air flow, evaporator dirty Clean evaporator with water
Evaporator iced-up Defrost
Air lines clogged Unclog
Pump faulty Replace
Pump blocked Crank
No electricity at charging pump Check junction box
Compressor not running, fan run-
ning
Starting facility faulty Replace; contact customer service
Compressor defective Replace; contact customer service
Continuous water leakage Safety valve does not close Vent or replace
Tank defective Turn off the supply line
Tank drips Check seals, retighten if necessary
Water discharge, only when heat
pump is running
Condensate Turn off the supply line
Condensate drain blocked Clean the drain
Odour No siphon in the condensate drain Install
No water in the siphon Fill
Noise Gurgling sound Water level in siphon too low; refill
Rippling noise Condensate drain blocked; clean
No indication no voltage 230 V Check the safety device on the main distributor board for
your house. Switch the safety device back on. If the safety
device triggers again after being switched back on, contact
a qualified contractor or OCHSNER Customer Service.
Fault display heat pump (See page 16, Fault messages on controller display)

INSTALLATION | Rectifying faults
16 www.ochsner.com | BIA-EUROPA Mini IWPL-EN11
12.1 Fault messages on controller display
Display Error Cause / remedy
Short circuit sensor F1 Sensor faulty
Check sensor/terminal
Lead break sensor F1 Sensor faulty
Check sensor/terminal
Short circuit sensor F2 Sensor faulty
Check sensor/terminal
Lead break sensor F2 Sensor faulty
Check sensor/terminal
Safety shutdown
High pressure
Frost protection
Reduce target value
No water in the tank
Condenser silted up → Clean condenser
Air temperature too low
Data loss in the parameter mem-
ory
Contact OCHSNER customer service

INSTALLATION | Appliance maintenance
BIA-EUROPA Mini IWPL-EN11 | www.ochsner.com 17
13. Appliance maintenance
WARNING: Electrocution
For maintenance, disconnect power to your heat
pump.
13.1 Service interval
We recommend arranging for an inspection and if neces-
sary a service to be conducted on the heat pump once a
year.
We also recommend cleaning the evaporator. Air ducts
and any screens and lters should also be checked for
cleanliness.
OCHSNER Customer Service will be pleased to help in
carrying out maintenance and testing.
13.2 Removing the cowl
Material damage
The cowl must be removed only by authorised con-
tractors.
WARNING: Electrocution
When the cowl is removed, live parts can be ac-
cessed.
»
To carry out maintenance, disconnect the
power to your heat pump.
If the distance between cowl and ceiling is too small, the
cowl cannot be fully lifted o󰀨 the heat pump. To do this, the
cowl must be removed:
»
Remove the cowl fastening screws.
»
Raise the cowl by approx. 10 cm.
»
Turn the cowl cover anti-clockwise.
»
Raise and remove the cowl cover.
»
Divide the cowl outer casing by moving the individual
casing parts vertically to each other.
»
Remove the components of the cowl outer casing
from the heat pump.
13.3 Descaling the DHW tank
Material damage
Only use descaling agents that are approved for
use in DHW tanks.
Depending on the DHW temperature and water hardness,
the following water treatments must be carried out in ac-
cordance with DIN 1988-7:2004-12:
dH [°] δ<60°C δ>60°C
0-14 None A
14-21 ASoftening
> 21 Softening B
δ DHW temperature in °C
A Periodic descaling required
B Use not recommended (reduction of DHW temperature)
In the case of highly uctuating water quality and high water
temperatures (δ > 60°C), an annual inspection by OCHS-
NER customer service is recommended.
Take the following steps into account when descaling the
system:
»
Reduce the pressure of the DHW tank.

INSTALLATION | Appliance maintenance
18 www.ochsner.com | BIA-EUROPA Mini IWPL-EN11
»
Disconnect the cold water and DHW connection from
the DHW tank.
»
Connect the ushing valve to the DHW tank.
»
Descale the DHW tank.
»
Reconnect the cold water and DHW connection.
»
Fill the DHW tank.
13.3.1 E󰀨ect of water quality
Substances in
water
Concentra-
tion
(mg/l or ppm)
Time limits
for analysis after sam-
pling
Total hardness
(°dH)
4-14 No limit
HCO3-/SO4²- >1.0
<1.0
+
-
No limit
Electrical conduc-
tivity
<10 µS/cm
10-500 µS/cm
>500 µS/cm
0
+
0
No limit
pH[2] <7.0
7,0-9,0
>9.0
0
+
0
Within 24 h
Alkalinity (HCO3-) <70
70-300
>300
0
+
0
Within 24 h
Sulphate [1]
(SO4²-)
<100
<200
>200
+
0
-
No limit
Ammonium (NH4+) <2
2-20
>20
+
0
-
Within 24 h
Chlorides (CI-) <100
100-200
>200
+
0
-
No limit
Free chlorine (CI2) <1
1-5
>5
+
0
-
Within 5 h
Hydrogen sulphide
(H2S)
<0.05
>0.05
+
-
No limit
Free (aggressive)
Carbon dioxide
(CO2)
<5
5-20
>20
+
0
-
No limit
Nitrate [1] (NO3-) <100
>100
+
0
No limit
Iron [3] (Fe) <0.2
>0.2
+
0
No limit
Aluminium (Al) <0.2
>0.2
+
0
No limit
Substances in
water
Concentra-
tion
(mg/l or ppm)
Time limits
for analysis after sam-
pling
Manganese [3]
(Mn)
<0.1
>0.1
+
0
No limit
1 Sulphates and nitrates act as inhibitors for pit-
ting corrosion caused by chlorides in pH-neutral
environments.
2 Generally speaking, a low pH value (below 6) increas-
es the risk of corrosion and a high pH value (above
7.5) reduces it.
3 Fe3+ and Mn4+ are powerful oxidising agents and
can increase the risk of localised corrosion in stain-
less steels. SiO2 above 150 ppm increases the risk of
scaling.
Explanation
»
[+] Good resistance under normal conditions.
»
[0] Corrosion may occur, particularly if other factors
are rated 0.
»
[-] We do not recommend use.
13.4 Customer service
Should your appliance develop faults despite the use of
quality components and care in its production, please con-
tact OCHSNER customer service on the phone numbers
below.
►Customer service hotline for Austria:
Tel.: [phone]
Email: [e-mail]
►Customer service hotline for Germany:
Tel.: [phone]
Email: [e-mail]
►Customer service hotline for Switzerland:
Tel.: [phone]
Email: [e-mail]
The heat pump model and serial number are given on the
name plate. The name plate is attached to the upper right-
hand casing section of the heat pump.
13.5 Maintenance contract
OCHSNER o󰀨ers a wide range of maintenance contracts.
You can nd more information at www.ochsner.com.
Benets of a maintenance contract
►A correctly performed service not only helps to save
energy but also protects the environment.

INSTALLATION | Appliance maintenance
BIA-EUROPA Mini IWPL-EN11 | www.ochsner.com 19
►In addition, correct care of the heating system is nec-
essary to ensure many years of operation and extend
the service life of the system.
►For the system user, this reduces the risk of system
failure.
You can nd further information on customer service and
on the services o󰀨ered under the maintenance contracts
at www.ochsner.com.

INSTALLATION | Specication
20 www.ochsner.com | BIA-EUROPA Mini IWPL-EN11
14. Specication
14.1 Data table
EUROPA Mini IWPL
APPLIANCE DATA:
Dimensions (diameter x height) [mm] 657 x 432
Type Internal heat exchanger
Weight [kg] 45
Electronic controller Tiptronic light
Casing colour Tiger white 29/11289
Grey RAL 7016
SPECIFICATION:
Phases/nominal voltage/frequency [~]/[V]/[Hz] 1/220-240/50
Fuse protection (tripping curve “C”) [A] 16
Max. operating current (without electric immersion heater) [A] 4
Max. permissible operating current (with electric immersion heater) [A] 13
Max. starting current [A] 16,5
Sound power/sound pressure level (at 1 m distance) [dBA] 57.0 /
49,0
PERFORMANCE FIGURES (EN 16147 / A15):
Load profile XL
Coefficient of performance (COP) 2,71
Heat-up time [h:min] 09:00
Max. usable amount of water [l] 357
Reference DHW temperature [°C] 52,50
Average heating output [kW] 1,68
Average power consumption [kW] 0,48
SCOPw (VDI 4650-1:2016) 3,38
DHW TANK (NOT INCLUDED IN SCOPE OF DELIVERY):
Max. nominal capacity (on site) [l] 500
AUXILIARY HEATER (ON SITE, NOT INCLUDED IN SCOPE OF DELIVERY):
Max. output (on site) [kW] 2
CONDENSER:
Type Plate heat exchanger
Material Stainless steel 1.4301
Number [pce] 1
Max. refrigerant operating pressure [bar] 25
Max. heat transfer medium operating pressure [bar] 6
Application range [°C] 60
Heat transfer medium Water
Heat transfer medium temperature differential [K] 5
Test pressure [bar] 45
Heat transfer medium flow rate [m³/h] 0,40
Internal pressure differential [mbar] 20
Circulation pump heat sink WNA [internal] ZRS 12/4-3
Residual head I WNA external, incl. FM [mbar] 118