Gebwell Taurus Inverter Pro Guide

Installation, Commissioning and Maintenance Manual
Taurus Inverter Pro and Taurus EVI Heat Pumps
WWW.GEBWELL.FI

Table of Contents
Copyright.......................................................................................................................6
Disclaimer..................................................................................................................... 7
1 General...................................................................................................................... 8
1.1 Device information and storing the instruction manual...................................................................... 8
1.2 Warranty.............................................................................................................................................8
1.3 Installation record and registration................................................................................................... 11
1.4 Important.......................................................................................................................................... 12
1.5 Serial number...................................................................................................................................13
1.6 Standards and regulations............................................................................................................... 13
2 Safety.......................................................................................................................14
2.1 Safety symbols.................................................................................................................................14
2.2 Safety instructions............................................................................................................................14
2.3 Hazardous substances.....................................................................................................................16
3 Presenting the heat pump........................................................................................18
3.1 Heat pump system........................................................................................................................... 18
3.2 Operating principle of a heat pump.................................................................................................. 18
3.3 Heating functions............................................................................................................................. 20
3.4 Tips for making savings....................................................................................................................21
3.5 Heat pump’s components and sensors............................................................................................21
3.6 Heat pump dimensions.................................................................................................................... 26
3.7 Technical specifications....................................................................................................................26
4 Delivery and handling.............................................................................................. 30
4.1 Delivery content............................................................................................................................... 30
4.2 Optional accessories........................................................................................................................30
4.3 Storing..............................................................................................................................................30
4.4 Recycling..........................................................................................................................................30
5 Installing the heat pump...........................................................................................32
5.1 Heat pump placement...................................................................................................................... 32
5.2 Transporting the heat pump............................................................................................................. 33
5.3 Removing the heat pump packaging................................................................................................35
5.4 Removing and installing the housing panels....................................................................................37
5.5 Removing the transport supports..................................................................................................... 38
6 Installing the pipes................................................................................................... 41
6.1 Heat pump pipe outputs................................................................................................................... 43
Contents
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6.2 Safety valve exhaust piping............................................................................................................. 45
6.3 Brine circuit...................................................................................................................................... 45
6.4 Heat supply circuit............................................................................................................................46
6.5 Domestic water system.................................................................................................................... 47
6.6 Examples of heating systems.......................................................................................................... 47
7 Carrying out electrical installations.......................................................................... 52
7.1 Connecting the power supply...........................................................................................................52
7.2 Installing and connecting the sensors.............................................................................................. 53
7.3 Adding and connecting expansion modules.....................................................................................55
7.4 Connecting the change-over valve...................................................................................................56
7.5 Connecting the domestic water circulator pump.............................................................................. 56
7.6 Connecting the domestic water resistor........................................................................................... 56
7.7 Connecting the domestic water mixing group.................................................................................. 57
7.8 Connecting the heaters of the heating accumulator.........................................................................57
7.9 Connecting the adjustable additional heat source........................................................................... 58
7.10 Connecting the continuous alert.....................................................................................................58
7.11 Connecting the source pump external control................................................................................59
7.12 Connecting the external source pump........................................................................................... 59
7.13 Connecting the cooling transfer pump........................................................................................... 60
7.14 Connecting the external circulator pump........................................................................................60
7.15 Connecting the heating control groups.......................................................................................... 61
7.16 Connecting the cooling circuits...................................................................................................... 62
7.17 Connecting the pressure transmitters............................................................................................ 63
7.18 Connecting the superheating circuit...............................................................................................64
7.19 Connecting the flowmeter.............................................................................................................. 64
7.20 Connecting the external control..................................................................................................... 65
7.21 Connecting wireless sensors......................................................................................................... 65
7.22 Creating the LAN network.............................................................................................................. 66
7.23 Connecting the cascade system.................................................................................................... 66
7.24 Connecting the Modbus RTU bus.................................................................................................. 67
8 Starting up the heat pump........................................................................................68
8.1 Filling and venting............................................................................................................................ 68
8.2 Checks before the heat pump start-up.............................................................................................69
8.2.1 Venting the charge circuit and the collector with the built-in pump of the device...................69
8.3 Hardware configuration.................................................................................................................... 70
8.4 Starting up the heat pump................................................................................................................70
8.4.1 Operation without the collector (operating during construction).............................................70
9 Heat pump settings..................................................................................................71
9.1 Basic settings for the heat pump......................................................................................................71
9.2 Domestic water system settings.......................................................................................................71
Contents
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Installation, Commissioning and Maintenance Manual
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9.3 Heating circuit settings..................................................................................................................... 72
9.3.1 Additional heating circuit settings...........................................................................................74
9.4 Cooling circuit settings..................................................................................................................... 74
9.5 Charge circuit settings......................................................................................................................75
9.6 Brine circuit settings......................................................................................................................... 75
9.7 Collector frost protection settings.....................................................................................................76
9.8 Additional heat source settings........................................................................................................ 76
9.9 External temperature request settings............................................................................................. 77
9.10 Wireless sensor settings................................................................................................................ 78
9.11 Settings for communications links.................................................................................................. 78
10 Heat pump maintenance and servicing..................................................................80
10.1 Annual inspections......................................................................................................................... 80
10.2 Draining the heat pump..................................................................................................................81
11 Malfunctions and alerts.......................................................................................... 82
11.1 Troubleshooting..............................................................................................................................82
12 Performance value graphs.....................................................................................84
13 User interface menu structure................................................................................86
14 Modbus registers................................................................................................... 96
15 Declaration of conformity..................................................................................... 105
Contents
Taurus Inverter Pro and Taurus EVI Version: 2-1 12/04/2023
Installation, Commissioning and Maintenance Manual
© 2023 Gebwell Page 5

Copyright
Copyright ©2022 Gebwell Ltd. All rights reserved.
The copyright of this publication is owned by Gebwell. Translation or reproduction of this publication or
any part of it is permitted only with the permission of Gebwell Ltd. The original language of this
publication is Finnish.
Copyright
Taurus Inverter Pro and Taurus EVI Version: 2-1 12/04/2023
Installation, Commissioning and Maintenance Manual
© 2023 Gebwell Page 6

Disclaimer
• The material in this instruction manual is for informational purposes only.
• Gebwell Ltd reserves the right to change its products in order to improve their reliability,
operation, design or other properties without prior notice. Gebwell Ltd is not liable for any
damages, losses, costs or expenses incurred by or related to the use of this instruction manual
or the products discussed therein.
• Gebwell Ltd makes no warranties, express or implied, with respect to this instruction manual,
including without limitation, implied warranties of merchantability or fitness for a particular
purpose.
Disclaimer
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© 2023 Gebwell Page 7

1 General
1.1 Device information and storing the instruction manual
NOTICE Keep the instruction manual in the immediate vicinity of the device.
Read the instructions carefully before installing, adjusting or servicing the device.
Always follow the instructions.
The installation technician must complete the installation record. A completed
record is a precondition for the validity of the manufacturer’s warranty.
Fill in the details below. If there are problems with the device, these details must be available.
Heat pump model: Serial number:
Installation firm: Name:
Installation date: Phone:
Electrician: Name:
Installation date: Phone:
The CE mark is the manufacturer’s declaration that the product conforms to EU legal requirements.
Gebwell Ltd affirms that the product meets all of the requirements of relevant EU directives. The purpose
of the CE mark is to facilitate the free movement of goods on the internal market in Europe.
1.2 Warranty
Warranty period and entry into force
Heat pumps come with a warranty of two (2) years starting from the purchase date. In addition, the
warranty can be extended by three (3) years. The extended warranty does not apply to any additional
equipment, accessories or other system parts of heat pump systems. The start date of the warranty must
be verified by presenting a purchase receipt. If no receipt is presented, the warranty start date is
considered to be the delivery date from the factory. If there is more than one month between the delivery
date of the device and the invoice date, the warranty is deemed to start one month after the delivery
date.
The technician/retailer of the heat pump completes the installation record and reviews it with the end
user. The end user is familiarised with the use of the equipment, after which the equipment is registered
1 General
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using the registration form found on the Gebwell Ltd’s website. Registration will extend the warranty
period by three years. The end user will be sent an email confirmation upon successful registration. If no
confirmation is delivered, the end user can ask for it directly from Gebwell Ltd. If the installation record
has not been properly completed and the equipment has not been registered, the extended warranty will
not be valid.
Warranty content
This warranty covers manufacturing or material defects detected in this product within the warranty
period, as well as direct costs resulting from repairing the device.
The buyer is liable for all defects caused due to the storage conditions during the period between the
delivery date and the commissioning date (see the installation, operation and maintenance manual;
storage).
Warranty limitations
The warranty does not cover costs resulting from a defective device (travel, energy, etc. costs), damage
caused by a defective device, the buyer’s production losses, profits not realised, or other indirect costs.
This warranty has been provided on the grounds that the product functions correctly in normal use
conditions and that the instruction manual is carefully followed. The liability of the warrantor is limited in
accordance with these terms and shall not, therefore, cover any damages caused by the product to
another object or person.
The warranty does not apply to direct personal injuries or damages to property caused by a defective
product delivered.
The warranty is granted on the condition that all effective regulations, generally accepted installation
methods and product mounting instructions provided by the manufacturer have been complied with.
The warranty does not cover and is invalid if the product is used in any other way than required by the
dimensions.
The customer is liable for visually inspecting the product before installation. A product that is clearly
defective must not be installed.
A requirement for the extended warranty is that the product is registered within six months of installation.
The warranty does not include damage caused
• during transportation
• by negligence of the user of the product or overload of the product, failure to observe the
instruction manual or to carry out care or maintenance
• by circumstances not dependent on the guarantor, such as fluctuations in power supply voltage
(voltage fluctuations can be no more than ±10 %), thunderstorms, fires or accidents; by service,
repairs or structural alterations performed by parties other than authorised repair services
• by installation or placement of the product in contravention of the installation, operation and
maintenance manual, or otherwise incorrectly.
Moreover, the warranty does not cover the repair of faults that are insignificant in terms of the operation
of the equipment, such as superficial scratches. The warranty does not include normal adjustments
described in the instruction manual, user guidance visits, service and cleaning, or tasks due to
negligence of the precautions and installation instructions or investigations of the same.
Some features of the heat pump require a mobile data connection (such as 3G or 4G). If the heat pump
is installed in a location with a poor or non-existent mobile data connection, Gebwell cannot guarantee
the proper operation of all the features (such as remote access).
Gebwell is not liable for the operation of mobile data or the costs incurred due to measures taken to
improve mobile data functionality, such as the costs of signal boosters.
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The warranty becomes void if:
• The product is modified or repaired without Gebwell Ltd’s consent.
• The product is installed or the product is used or serviced contrary to the manufacturer’s
instructions (see the installation, operation and maintenance manual).
• The product is used for a purpose for which it is not intended.
• The product is stored in humid or otherwise inappropriate conditions (see the installation,
operation and maintenance manual).
• The control automation of the product is replaced or its properties are modified from the original
(for example, by installing an accessory that affects the control).
Actions in the event of a fault
If a fault is detected during the warranty period, the customer must immediately (normally within 14 days)
report it to the Gebwell retailer that sold the product. The information to be provided includes the
equipment model and serial number of the product and a detailed description of how the fault was found
and the conditions under which it occurred and/or arises. The warranty form properly completed in
relation to the purchase must be presented upon request. After the warranty has expired, it shall not be
considered valid to invoke a defect reported during the warranty period unless the defect was reported in
writing during the warranty period.
Defects must be reported as soon as they are detected. If a defect is not reported as soon as the
customer detects the fault, or when the customer should have detected the fault, the buyer will lose
his/her right to a claim based on this warranty.
Servicing
Servicing for this product during and after the warranty period is performed by the servicing organisation
authorised by the manufacturer throughout the economic service life of the heat pump.
How to make a service request
Repairs under warranty, servicing requests and orders for spare parts must be directed to the installation
firm that installed the product. Before making a service request, please ensure the following:
• Read the installation, operation and maintenance manual carefully and consider whether you
have followed the manual when using the device.
• Ensure that the warranty period is still valid, you have carefully read the warranty terms and you
know the product’s model and serial numbers before making a warranty repair request.
• All parts belonging to the device to be returned must be packed with the device.
• The device to be returned must be packed in such a way that handling it does not have adverse
effects on health or the environment.
The device replaced under warranty is the manufacturer’s property. Gebwell Ltd reserves the right to
decide how, where and who will perform repairs or replacements for which the manufacturer is liable.
Gebwell Ltd is not liable for breakdown of an incorrectly installed device.
The device may only be repaired by a professional designated by Gebwell Ltd. Faulty repairs and
settings may cause danger to the user, damage to the device and weaken the efficiency of the device.
Please bear in mind that a visit by a retailer or service technician is not free, even during the warranty
period, if repairs are required due to faulty installation, repair or adjustment.
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1.3 Installation record and registration
The heating system must be inspected in accordance with applicable regulations
before commissioning. The inspection must be performed by a qualified person.
Fill in the installation record supplied with the device carefully and leave it to the
owner of the device.
NOTICE A completed installation record is a precondition for the validity of the warranty.
Enter the following information on the label glued to the control unit of the equipment:
• commissioning date of the equipment
• first annual service not later than.
Figure 1.1 - Control unit label
Registration of the device
By registering the heat pump within six months from its installation, you will get a
five-year warranty for it.
Register the installed heat pump on our website at https://gebwell.fi/rekisteroi-maalampopumppu/ .
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You can also access the registration page on a smartphone by using the QR code below. If you are
unable to register the heat pump, call Gebwell Ltd on [phone].
Gebwell Ltd contact information
Gebwell Ltd (2008956-7)
Patruunapolku 5, FI-79100 Leppävirta, Finland
Tel. [phone] | [email protected] | www.gebwell.fi
Support contact information
https://gebwell.fi/tuen-yhteystiedot/
1.4 Important
These installation instructions should be given to the customer in the manual
folder.
These installation instructions describe installation and maintenance measures that should only be
carried out by a professional.
ATTENTION Any work on the refrigerant circuit may only be carried out by persons qualified in
the refrigeration sector. Electrical work should only be carried out by an
electrician.
ATTENTION The commissioning of the device must be carried out by the equipment installer or
by an expert authorised by the installer.
ATTENTION The heat pump is not intended for use by persons with impaired physical/mental
condition, impaired senses or lack of experience or knowledge of the heat pump,
unless they are supervised or guided in using the heat pump by a person
responsible for their safety.
ATTENTION Children must not play with the device or carry out cleaning or maintenance work
without adult supervision.
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After commissioning, the heat pump sends telemetry data to the Gebwell Smart
cloud automatically. Data storage in the cloud enables the display of the device’s
history data in the Gebwell Smart control room and system optimization. The data
can also be used for maintenance and product development purposes.
1.5 Serial number
Keep in mind that you will need to know the device’s serial number whenever you contact the
manufacturer, maintenance or support services.
The serial number of the heat pump is on the ID plate glued under the control unit.
Figure 1.2 - Serial number
1.6 Standards and regulations
When performing the installation, the following must be complied with:
• national provisions
• statutory accident prevention regulations
• statutory environmental protection provisions
• profession-specific safety regulations.
1 General
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2 Safety
2.1 Safety symbols
This manual contains information indicated with signal words “danger”, “warning”, “attention” and
“notice”. They inform the user or a representative of an authorised repair service of potential harm to the
product or persons.
Hazardous situation means a risk of personal injury.
Any abnormal use is prohibited, including ignoring safety information.
DANGER DANGER indicates an immediate hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING WARNING indicates a potential hazardous situation which, if not avoided, could
result in death or serious injury.
ATTENTION ATTENTION indicates a potential hazardous situation which, if not avoided, could
result in minor or moderate injury.
NOTICE NOTICE indicates a potential situation which, if not avoided, could result in
damage to property or an undesirable outcome or condition.
Comment indicates information intended to clarify and simplify a procedure.
2.2 Safety instructions
Handling and installation
The following safety instructions must be kept in mind when handling, installing and operating the device.
WARNING Follow these installation instructions to install the system. Install the device firmly
on a load-bearing surface to prevent the device from falling and causing damage
to property or personal injuries.
ATTENTION Only lift the device at the locations shown in the instructions. The metallic edges
of the heat pump could injure your hands when you are hauling the unit. Use
slash-resistant gloves to move the heat pump.
2 Safety
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ATTENTION The device should not be installed in a location:
• where flammable gases may leak, or
• where corrosive gas may be generated or accumulated, or
• where volatile flammable substances are handled, or
• near devices that generate an electromagnetic field or high frequency
overtones.
ATTENTION Use original accessories and components when installing the device.
ATTENTION During installation, keep all of the device’s housing panels intact to prevent water
from splashing onto the device’s electrical components.
Electrical installation
WARNING Electrical installation must be carried out by an authorised electrician and the
system must be connected separately.
WARNING Never jeopardise safety by bypassing safety devices.
WARNING Use only fuses of the correct value (correct trigger current) in places where the
fuse should be used.
Refrigerant circuit
WARNING Stop the compressor before opening the refrigerant circuit.
ATTENTION The refrigeration compressor unit in the device must only be serviced or repaired
by a qualified person.
ATTENTION Check after installation and maintenance that no refrigerant leaks in gas form from
the system.
ATTENTION Use pipes and tools suitable for the refrigerant in the device.
ATTENTION Refrigerant may leak during maintenance, so ensure that there is adequate
ventilation. Monitor the measured values and ensure that the concentration limits
of the refrigerant are not exceeded.
2 Safety
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Considerations during installation and maintenance
DANGER Always turn off the main power of the device before performing any maintenance.
DANGER Do not rinse the heat pump with water.
DANGER Do not touch the buttons with wet hands.
ATTENTION Do not touch refrigerant pipes with your bare hands while the device is in
operation.
NOTICE Switch off the device in a controlled manner using the operating terminal before
cutting the main power. Do not switch off the system using the main switch.
NOTICE Do not switch off the power supply immediately after switching off the heat pump.
Wait for at least 5 minutes.
2.3 Hazardous substances
Electricity
The electrical components inside the heat pump contain a potentially fatal voltage.
DANGER Before opening the protective cover of the control unit or the compressor module,
switch off the device using the main switch.
Refrigerant
The heat pump contains a refrigerant that is harmful and hazardous to the environment. The refrigerant
is in a hermetically sealed refrigerant circuit in the compressor module.
WARNING The refrigerant circuits of heat pumps contain very low (–25 °C) and very high
(+130 °C) temperatures. Work on the heat pump can lead to frost and burn
injuries.
ATTENTION If the refrigerant leaks into indoor premises, the room must be thoroughly
ventilated.
ATTENTION • The use of other refrigerants than specified for the device is prohibited.
The refrigerant is indicated on the ID plate and in the technical
specifications table of this manual.
• When refrigerant is added, it must be in liquid form.
2 Safety
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Heat collecting liquid
ATTENTION The mixture of antifreeze agents, including ethanol, used as the heat collecting
liquid are highly flammable. Avoid splashing the liquid on your skin.
2 Safety
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3 Presenting the heat pump
3.1 Heat pump system
A well-designed heat pump system with the correct power values offers low operating costs and good
energy efficiency. The heat pump enables you to efficiently heat your building and domestic water.
The heat pump collects heat from a heat source and brings it into the building. Potential heat sources
include a geothermal heat well, body of water, soil or waste heat of a process.
During the summer, the temperature of cold collecting liquid can also be used for cooling the building in
an environmentally friendly way.
Further information about heat collection systems and their dimensioning can be
found on the websites of Gebwell Ltd and the Finnish Heat Pump Association
(SULPU).
www.gebwell.fi
www.sulpu.fi
3.2 Operating principle of a heat pump
The heat pump consists of four main components:
• evaporator
• compressor
• condenser
• expansion valve.
The solar energy stored in the soil is collected by the brine circulating in the brine circuits. In the
evaporator (4), energy contained in the heat collecting liquid is transferred to the refrigerant, which
absorbs the heat energy as it evaporates. The heat collecting liquid returns to the ground approximately
3 °C cooler than when it came. The brine entering the heat pump can be no colder than –5 °C.
The pressure and temperature of the refrigerant increase in the compressor (3). The refrigerant also
absorbs the heat energy created by the compressor’s work.
Hot gas is transferred into the condenser (2). The condenser transfers the heat energy from the
refrigerant into the water circulating in the heating system, which distributes it to heat the building and the
domestic water with the help of a change-over valve. The refrigerant condenses into a liquid state in the
condenser as it loses heat energy.
The pressure of the refrigerant remains high as the liquid refrigerant is transferred to the expansion valve
(6). The pressure of the refrigerant decreases in the expansion valve, and its temperature drops to
approximately –10 °C. The expansion valve injects the correct amount of refrigerant into the evaporator,
where the heat energy transferred from the brine causes the refrigerant to evaporate.
3 Presenting the heat pump
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9
10
8
11
13
12
24
7 5
1
6
3
1 Heat pump 8 Change-over valve
2 Condenser 9 Heat collection pipe, ground loop
3 Compressor 10 Heat collection pipe, bored well
4 Evaporator 11 Domestic water accumulator
5 Charge pump 12 Heating accumulator
6 Expansion valve 13 Domestic water control valve
7 Source pump
Figure 3.1 - Functional description (Taurus Inverter Pro)
3 Presenting the heat pump
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9
10
8
11
13
12
2
3
4
6
7 5
14
1
15
1 Heat pump 9 Heat collection pipe, ground loop
2 Condenser 10 Heat collection pipe, bored well
3 Compressor 11 Domestic water accumulator
4 Evaporator 12 Heating accumulator
5 Charge pump 13 Domestic water control valve
6 Expansion valve 14 Economizer
7 Source pump 15 Superheating pump
8 Change-over valve
Figure 3.2 - Functional description (Taurus 80/110 EVI)
3.3 Heating functions
Domestic water
The heat pump charges the domestic hot water to the domestic water accumulator using the change-
over valve (Q3). The domestic water accumulator has two temperature sensors that control the charging
process.
The measurement (B2) at the top of the accumulator indicates the temperature of the domestic water
and the functional sensor (B3) at the bottom turns the charging process on and off. The domestic water
temperature is set to the heat pump’s controller via the Gebwell Smart Control Hub, application or
controller. Based on the set temperature, the heat pump produces domestic water for the accumulator.
This selection affects the amount of domestic hot water. When the set value is 55 or more, the heat
pump also uses an electric heater to heat domestic hot water.
3 Presenting the heat pump
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