Heiko Thermal 6 User manual

1
INSTALLATION MANUAL
HEAT PUMP HEIKO THERMAL
• The device is granted a 5-year warranty only if commissioned by an Authorised Service
Centre and registered in the guarantor’s system. The cost of service commissioning
according to the current APS rates xed by the general distributor of Refsystem
devices.
• Please read this manual carefully before commencing installation.
• This device is lled with R32 refrigerant.
• The device contains uorinated greenhouse gases.
• Keep this manual for future reference.
THERMAL 6
THERMAL 9
THERMAL 12
THERMAL 15
THERMAL 19

2
1. Before use ........................................................................................................................3
2. Warranty terms .........................................................................................................12
3. Main Components...................................................................................................16
4. Data sheet ....................................................................................................................18
5. Capacity tables .........................................................................................................20
6. Unit dimensions ......................................................................................................32
7. Power supply..............................................................................................................35
8. Power distribution room ...................................................................................36
9. Terminal blocks for indoor units...................................................................37
10. Terminal blocks for outdoor units ............................................................ 40
11. Installation elements required by the warranty ...............................42
12. Installation requirements................................................................................45
13. Installation diagrams..........................................................................................45
13.1. Heiko THERMAL heat pump with CH system only .................... 46
13.2. Heiko THERMAL heat pump with CH and WH systems ........55
13.3. Heiko THERMAL heat pump with HUW system and floor
heating without control............................................................................... 65
13.4. Heiko THERMAL heat pump with heating and HUW
system.......................................................................................................................75
13.5. Heiko THERMAL heat pump with CH system and auxiliary
heat source ............................................................................................................86
13.6. Heiko THERMAL heat pump with CH + HUW systems and
auxiliary heat source .......................................................................................97
14. Emergency activation of electric heater ............................................108
15. Failure codes...........................................................................................................109
16. Circuit diagrams .................................................................................................... 111
Table of Contents

3
Safety Precautions
Cautions:
Do not accelerate the defrosting process or clean the device in a manner other than
recommended by the manufacturer. The device shall be stored in a room without
continuously operating ignition sources (for example: open ames, an operating gas
appliance or an operating electric heater.).
Do not pierce or burn.
Note:the refrigerant contained in the device may be odourless.
Servicing shall be performed only as recommended by the manufacturer.
The appliance shall be stored in a well-ventilated area where the room size corresponds
to the room area as specied for operation. All procedures that affect the safety of the
installation shall only be carried out by competent persons.
The device contains uorinated greenhouse gases.
It is forbidden to release the refrigerant into the atmosphere! All the products are
in conformity with the following European regulations: Low Voltage Directive,
Electromagnetic Compatibility Directive
General information:
1. Transport of equipment containing ammable refrigerants
In compliance with the transport regulations
2. Marking of equipment using signs
In compliance with local regulations
3. Disposal of equipment using ammable refrigerants
In compliance with national regulations
4. Storage of equipment/devices
The equipment shall be stored in accordance with the manufacturer’s instructions.
5. Storage of packed (unsold and brand new) equipment
Storage packaging design shall ensure protection against refrigerant leakage in the case
of mechanical damage of the device inside the packaging. The maximum number of
pieces of equipment permitted to be stacked shall be determined by local regulations.
6. Information on servicing
1) Work area inspection
Prior to beginning work with systems containing flammable refrigerants, safety checks
are necessary to ensure that the risk of ignition is minimised. For maintenance or repair
of the refrigerant installation, the following precautions shall be complied with prior to
conducting such works.
Before Use
Air-to-water heat pump
DC inverter

4
Before Use
2) Work procedure
Work shall be undertaken under a controlled procedure so as to minimise the risk of a
flammable gas or vapour being present while the work is being performed.
3) General work area
All maintenance and other personnel working in the device vicinity shall be instructed
on the nature of work being carried out. Work in confined spaces shall be avoided. The
work area around shall be sectioned off. Ensure that the conditions within the work
area have been made safe by control of flammable material.
4) Checking for presence of the refrigerant
The area shall be inspected with an appropriate refrigerant detector prior to and during
work. This lets the technical personnel know whether the atmosphere in their work
place is not toxic or flammable. Tightness detectors should enable the detection of the
type of refrigerant present in the installation. They must be intrinsically safe providing
the appropriate level of protection, and non-sparking.
5) Presence of re extinguisher
If hot work is to be performed, appropriate fire extinguishing equipment must be
available. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
6) No ignition sources
No person carrying out work in relation to a refrigeration system which involves
exposing any pipe work that contains or has contained flammable refrigerant shall use
any sources of ignition in such a manner that it may lead to the risk of fire or explosion.
All possible ignition sources, including cigarette smoking, should be kept sufficiently
far away from the site of installation, repairing, removing and disposal, during which
flammable refrigerant can possibly be released to the surrounding space. Prior to work
taking place, the area around the equipment is to be surveyed to make sure that there
are no flammable hazards or ignition risks.“No Smoking” signs shall be displayed.
7) Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before opening
the refrigerant circuit or conducting any hot work. Ventilation shall continue until the
completion of work. The ventilation should safely disperse any released refrigerant and
preferably expel it externally into the atmosphere.
8) Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the purpose
and to the correct specification. At all times the manufacturer's maintenance and
service guidelines shall be followed. If in doubt consult the manufacturer’s technical
department for assistance. The following controls should be applied to installations
containing flammable refrigerants:

5
The charge size is in accordance with the room size within which the refrigerant
containing parts are installed; The ventilation machinery and outlets are operating
adequately and are not obstructed; If an indirect refrigerating circuit is being used,
the secondary circuit shall be checked for the presence of refrigerant; Marking to the
equipment continues to be visible and legible. Markings and signs that are damaged
or illegible shall be replaced with new ones; Refrigeration pipe or components shall be
installed in a places where they are unlikely to be exposed to any substance which may
corrode refrigerant containing components, unless the components are constructed
of materials which are inherently resistant to being corroded or are suitably protected
against being corroded in this manner.
9) Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety checks and
component inspection procedures. If a fault exists that could compromise safety, then
no electrical supply shall be connected to the circuit until it is satisfactorily dealt with.
If the fault cannot be corrected immediately but it is necessary to continue operation,
an adequate temporary solution shall be used. This fact shall be reported to the owner
of the equipment. Initial safety checks shall determine that: Capacitors are discharged:
this shall be done in a safe manner to avoid the possibility of sparking; There are no live
electrical components and wiring exposed while charging, recovering or purging the
system; .That there is continuity of earth bonding.
7. Repairs to sealed components
1) During repairs of sealed components, all electrical supplies shall be disconnected
from the equipment being worked upon prior to any removal of sealed covers, etc. If it is
absolutely necessary to have an electrical supply to equipment during servicing, then a
permanently operating form of leak detection shall be located at the most critical point
to warn of a potentially hazardous situation.
2) Particular attention shall be paid to the following to ensure that by working on electrical
components, the casing is not altered in such a way that the level of protection is affected.
This shall include damage to cables, excessive number of connections, terminals not
made to original specification, damage to seals, incorrect fitting of cable glands, etc.
Ensure that all electrical devices are connected and mounted securely.
Ensure that seals or sealing materials have not degraded to such an extent that they
no longer serve the purpose of preventing the ingress of flammable atmosphere.
Replacement parts shall be in accordance with the manufacturer's specifications.
Before Use

6
CAUTION:
The use of silicon sealant may inhibit the effectiveness of some types of leak detection
equipment. Intrinsically safe components do not have to be isolated prior to working on
them.
8. Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit without
ensuring that this will not exceed the permissible voltage and current permitted for the
equipment in use. Intrinsically safe components are the only types that can be worked
on while live in the presence of a flammable atmosphere. The test apparatus shall be at
the correct rating.
Replace components only with parts specified by the manufacturer. Other parts may
result in the ignition of refrigerant in the atmosphere from a leak.
9. Wiring
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration,
sharp edges or any other adverse environmental effects. The check shall also take into
account the effects of ageing or continual vibration from sources such as compressors
or fans.
10. Detection of ammable refrigerants
Under no circumstances shall potential sources of ignition be used in the searching for
or detection of refrigerant leaks. A halide torch (or any other detector using a naked
flame) shall not be used.
11. Leak detection methods
The following leak detection methods are deemed acceptable for systems containing
flammable refrigerants:
Electronic leak detectors shall be used to detect flammable refrigerants, but the
sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall
be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source
of ignition and is suitable for the refrigerant used. Leak detection equipment shall be set
at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant
employed and the appropriate percentage of gas is confirmed (max. 25%).
Leak detection fluids are suitable for use with most refrigerants but the use of detergents
containing chlorine shall be avoided as the chlorine may react with the refrigerant and
corrode the copper pipe-work.
Before Use

7
If a leak is suspected, all naked flames shall be removed/ extinguished.
If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall
be recovered from the system, or isolated (by means of shut off valves) in a part of the
system remote from the leak. Oxygen free nitrogen (OFN) shall then be purged through
the system both before and during the brazing process.
12. Removal and evacuation
When breaking into the refrigerant circuit to make repairs - or for any other purpose
-conventional procedures shall be used. However, it is important that best practice is
followed since flammability is a consideration. The following procedure shall be adhered
to:
- remove refrigerant from the circuit;
- purge the circuit with inert gas;
- evacuate the circuit;
- purge again with inert gas;
- open the circuit by cutting or brazing.
The refrigerant charge shall be recovered into the correct recovery cylinders. The system
shall be “flushed” with OFN to render the unit safe. This process may need to be repeated
for several times. Compressed air or oxygen shall not be used for this task.
Flushingshall beachievedbybreakingthe vacuuminthesystemwith OFNandcontinuing
to fill until the working pressure is achieved, then venting to atmosphere. Finally, the
system shall be vacuumised. This process shall be repeated until no refrigerant is within
the system. When the final OFN charge is used, the system shall be vented down to
atmospheric pressure to enable work to take place. This operation is absolutely vital if
brazing operations on the pipe-work are to take place. Ensure that the outlet for the
vacuum pump is not close to any ignition sources and there is ventilation available.
13. The procedure of refrigerant charging
In addition to conventional charging procedures, the following requirements shall be
followed.
Ensure that contamination of different refrigerants does not occur when using charging
equipment. Hoses or lines shall be as short as possible to minimise the amount of
refrigerant contained in them.
Cylinders shall be kept upright.
Ensure that the refrigeration system is earthed completely before commencing the
refrigerant charge. Label the system with the appropriate F-gas label upon completion.
Before Use

8
Extreme care shall be taken not to overfill the refrigeration system. Prior to recharging
the system it shall be pressure tested with OFN. The system shall be leak tested on
completion of charging but prior to commissioning. A follow up leak test shall be carried
out prior to leaving the site.
14. Decommissioning
Before carrying out this procedure, it is essential that the technician is completely
familiar with the equipment and all its detail. It is recommended good practice that all
refrigerants are recovered safely.
Prior to the task being carried out, oil and refrigerant samples shall be taken in case
analysis is required prior to re-use of reclaimed refrigerant. It is essential that electrical
power is available before the task is commenced.
a) Become familiar with the equipment and its operation..
b) Isolate the system from the electrical supply.
c) Before attempting the procedure, ensure that::
• Mechanical handling equipment is available, if required, for handling refrigerant
cylinders;
• All personal protective equipment is available and being used correctly;
• The installation emptying process is supervised at all times by a competent person;
• Recovery equipment and cylinders conform to the appropriate standards.
d) Pump down the refrigerant system, if possible.
e) If vacuum is not possible, make a manifold so that refrigerant can be removed from
various parts of the system.
f) Make sure that cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine / system and operate it in accordance with the
manufacturer’s instructions.
h) The cylinder must not be filled with excessive amount of refrigerant (maximum 80%
of liquefied refrigerant volume).
i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
j) When the cylinders have been filled correctly and the process completed, make sure
that the cylinders and the equipment are removed from site promptly and all isolation
valves on the equipment are closed off.
k) Recovered refrigerant shall not be charged into another refrigeration system unless it
has been cleaned and checked.
Before Use

9
15. Labelling
Equipment shall be labelled stating that it has been de-commissioned and emptied
of refrigerant. The label shall be dated and signed. Ensure that there are labels on the
equipment stating the equipment contains flammable refrigerant.
16. Refrigerant recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is
recommended good practice that all refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant
recovery cylinders are employed. Ensure that enough cylinders for holding the total
system refrigerant are available. All cylinders to be used shall be attested for the recovered
refrigerant and labelled for the refrigerant
used in the installation stating its type.
The cylinders shall be equipped with safety and cut-off valves. Check that the valves are
fully functional. Empty recovery cylinders are evacuated and, if possible, cooled before
recovery occurs.
The recovery equipment shall be in good working order and include the instructions
for use. The equipment shall be suitable for the recovery of flammable refrigerants.
In addition, a set of calibrated weighing scales shall be available and in good working
order. Hoses shall be complete with leak-free disconnect couplings. Check that they
are in good technical condition. Before using the recovery machine, check that it is
in satisfactory working order, has been properly maintained and that any associated
electrical components are sealed to prevent ignition in the event of a refrigerant release.
Consult manufacturer if in doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct
recovery cylinder, and the relevant Waste Transfer Note attached. Do not mix refrigerants
in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been
evacuated to an acceptable level to make certain that flammable refrigerant does not
remain within the lubricant. The evacuation process shall be carried out prior to returning
the compressor to the suppliers. Only electric heating to the compressor body shall be
employed to accelerate this process. Oil drainage from the system shall be carried out
safely.
Before Use

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1.1 Safety Cautions
The following symbols are very important. Please be sure to understand their meaning,
which concerns the product and your personal safety.
Before Use
Warning Caution Prohibition
Fuse
Steel Copper
The installation, dismantlement and
maintenance of the unit must be
performed by qualified personnel. It is
forbidden to make any changes to the
product design, otherwise there is a
risk of injury or product damage.
Make sure the power supply to the
heat pump unit is off before any
operations are done on the unit.
When the power cord gets loose or
is damaged, always get a qualified
person to fix it.
Be sure to read this manual before use
Ground wire
Before taking shower, please always
add a mixture valve before water tap
and set it to proper temperature.
A properly adapted socket must
be used, otherwise it may not work
properly.
The power supply to the unit must be
grounded.
This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge under the supervision of adult guardians trained in
safe operation of the device and understanding the hazards involved. Children
shall not play with the appliance. Cleaning and user maintenance shall not be
made by children without supervision.
Do not touch the ventilation grille
when the
ventilator's engine is on.
Do not touch the power plug with
wet hands. Never pull out the plug by
pulling the power cable.
Water or any kind of liquid must not
be poured onto the product, or it may
cause product malfunction.
When the power cord gets loose or
is damaged, always get a qualified
person to fix it.
Please select the correct fuse or
breaker as per recommended. Steel
wire or copper wire cannot be used
as substitutes for fuse or breaker, or it
may cause product damage.
Please note that there is a risk of finger
injury by the heat exchanger ribs.

11
Jednostka
wew
Before Use
RCD
Main Power Cable
It is mandatory to use a suitable circuit
breaker for the heat pump and make
sure the power supply to the heater
corresponds to the specifications.
Otherwise the unit might be damaged.
Disposal of scrap batteries — please
discard the batteries as sorted
municipal waste at the accessible
collection point.
Installation of a residual current
device (RCD) having a rated residual
operating current not exceeding 30
mA is advisable.
1. It is recommended to fill the system with clean water
2. If you use tap water for filling, soften it and install a filter.
Note: after filling the pressure in water system should be 1.5-2 bar.
This marking indicates that, in the EU, the product must not be disposed
of with communal waste. To prevent possible harm to the environment or
human health from uncontrolled waste disposal, recycle it responsibly to
promote the sustainable reuse of material resources. To return the used
device, use the waste retrieval and collection system or contact the distributor
the product was purchased from. They can collect the purchased product.
They can transfer the product for environmentally safe recycling.

12
1. Warranty period
1.1. Refsystem sp. z o.o. based in Grudziądz, 86-300 Grudziądz, at ul.Metalowców 5, entered
into the Register of Entrepreneurs of the National Court Register kept by the District
Court for the capital city of Warsaw, XIII Commercial and Registration Department of
the National Court Register, under the KRS number 0000211103, REGON 011009277, VAT
ID 5220003919, (hereinafter referred to as "Guarantor") grants a guarantee to consumers
within the meaning of Art. 22(1) of the Civil Code for hidden material or construction
defects of a part or the entire heat pump that prevent its use as intended, provided that
the requirements set out in chapter 3, section 3.1 are met;
1.2. The warranty period for the heat pump starts from the day of the first start-up at the
place of permanent installation, but not later than 6 months from the date of purchase
and is 60 months in the case of a complete heat pump delivered by the Guarantor,
provided that the requirements set out in chapter 3 are met;
1.3. During the warranty period, the Guarantor undertakes to remove the physical defect
by repairing or delivering a defect-free item. The Guarantor or his Authorised Service
Partner decides on the method of performance of the warranty service; the specification
of the possible methods can be found on the following website: https://heiko.pl/kontakt/
1.4. If the requirements specified in chapter 3 are not met, the warranty shall expire after
one year from the sale date.
2. Warranty coverage
2.1. The first start-up must be performed by an Authorised Service Partner appropriately
authorized by the Guarantor, subject to sections. 2.6 and 2.7. The first start-up is payable
according to the current rates of the Authorised Service Partner;
2.2. Warranty repairs of devices weighing more than 10 kg shall be performed at the
place of installation of the heat pump within 14 working days from the date of reporting
the defect to the Authorised Service Partner. In other cases (weight below 10 kg), the
Authorised Service Partner shall decide whether it is necessary to carry out the warranty
repair outside the place of installation of the devices;
2.3. The warranty covers any defects of the device caused by defective parts or
manufacturing defects;
2.4. Only companies with the APS (Authorized Service Partner) status are authorized to
perform warranty repairs and technical inspections; the list of these companies can be
found on the following website: www.heiko.pl,;
2.5. The obligations of the Guarantor are taken over by APS, which was the last to perform
warranty repairs;
2.6. This warranty shall be respected by the Guarantor after the following assumptions
are met:
a) the first start-up takes place under the supervision of an Authorised Service Partner
appropriately authorized by the Guarantor and is confirmed in writing by the User;
b) the original purchase invoice is presented;
Warranty terms

13
c) the User confirms with a legible signature that the first start-up has been performed;
d) the Authorised Service Partner reports the activation of the heat pump in the pump
registration system on the Guarantor's website;
e) the User accepts these Heat Pump Warranty Terms and Conditions when reporting
commissioning on the "Commissioning Confirmation" form. They consent to the
processing of personal data - in particular the e-mail address or telephone number
provided - in order to provide warranty and post-warranty service of the heat pump;
f) the direct supplier of the heat pump does not provide a warranty on its own terms.
2.7. The Authorised Service Partner has the right to refuse to perform the first start-up of
the heat pump in the case of: improperly performed or unfinished installation or failure
to pay the amount due for the device on time. In such cases the system faults shall be
recorded in the Commissioning Report, and a repeated paid start-up may only take place
after they have been removed.
2.8. The condition for maintaining the guarantee for a period of 60 months is the
performance of technical inspections by APS in accordance with the provisions of Chapter
3;
2.9. The rights and obligations arising from the warranty apply only to the User, who
is the legal owner of the heat pump, or the User indicated by the entity financing the
purchase of the heat pump, if the latter remains its owner;
2.10. The Guarantor reserves the right not to grant or to limit the warrantyin the case of
compromised devices;
2.11. Authorised Service Partner may refuse a free repair if:
a) non-conformity is found between the information in the documents and the
equipment sold;
b) seals have been tampered with;
c) the provisions included of the Warranty Card are not followed;
d) modifications of the heat pump implemented by a third party
2.12. If replacement parts need to be imported from abroad, the repair period shall be
extended by the time necessary to import the spare parts.
2.13. A notification of defects found shall include:
a) data of the reporting entity;
b) Warranty Card number;
c) device serial number;
d) description of the defect;
e) confirmation of the completion of regular technical inspections;
f) address of device installation site.
2.14. The repair of the device or replacement of parts, regardless of the scope of the repair
or replacement, shall not cause the warranty period to start anew upon the repair or
delivery of the spare parts. The warranty period shall be extended by the device repair
period. It shall not apply if the Customer fails to pick up the repaired equipment from the
ASP despite having been notified of the completion of the repair.
If the Customer fails to pick up the repaired equipment for more than 8 weeks from the
notification of the completion of the repair, the ASP reserves the right to dispose of the
equipment.
Warranty terms

14
3. Warranty technical inspection
3.1. A pre-requisite to the validity of the warranty is the cyclical completion of paid technical
inspections of the devices, at least once per year within the warranty period, by the ASP,
confirmed with an appropriate entry in the Warranty Card;
3.2. The technical inspections shall be carried out on request. In order for an inspection to
be performed the Customer shall notify the Authorised Service Partner;
3.3. If justified by the operating conditions of the device, the ASP, in agreement with
the Customer, shall schedule additional obligatory warranty inspections, which shall be
pre-requisite to the exercise of the rights arising from this warranty. If no agreement is
reached, the decision of the ASP shall be final.
4. Guarantor's disclaimer
4.1. The warranty does not cover:
a) damage to the electrical or electronic system if the device has been connected to a
voltage source other than the standard electrical network, e.g. power generator, UPS,
etc. damage resulting from the lack of protection of the electrical and hydraulic system;
b) damage resulting from improper execution of the electrical installation;
c) damage resulting from improper execution of the hydraulic system (inconsistent
with the guidelines for the design and implementation of systems with heat pumps);
d) damage when the heating system does not guarantee protection against exceeding
the maximum operating parameters of the heat pump;
e) damage caused by improper operation: inconsistent with the Operating Manual
or long-term operation in extreme parameters of the operating range or operation in
critical conditions;
f) faults in the heat pump operation resulting from improper selection of heating
system components;
g) faults caused by incorrect parameters of liquids flowing through heat pump
exchangers. The recommended water hardness is 2-6 dH;
h) errors resulting from arbitrary automation adjustments at the service level reserved
for Authorised Service Partners only;
i) devices that have been installed, stored or used inconsistently with the instructions,
generally accepted safety requirements or technical rules;
j) devices in which the factory seals have been arbitrarily removed, components repaired,
modifications made on one's own or the device equipped with non-factory elements;
k) damage caused by lack of or improper maintenance (e.g. periodic inspections by
persons or companies not authorizes by the Guarantor)
Warranty terms

15
l) any defects and damage caused by Force Majeure events (e.g. flooding, corrosion,
electrical system overvoltage, lightning),
m) any activities and replacement parts listed in the operating manual and included
in the normal operation of the appliance (filter cleaning and replacement, remote
controller battery replacement).
4.2. The warranty shall not cover any claims of the Customer based on the technical
specifications of the device, provided that they meet the information provided by the
manufacturer;
4.3. Any decision of the ASP on the legitimacy of a claim shall be final;
4.4. The user covers the following costs, not covered by the warranty, according to the
price list of an Authorised Service Partner:
a) all costs associated with the assembly of the device supplied as standard
in parts
b) the cost of installing and connecting the heat pump at the place of its operation;
c) costs of the first start-up of the heat pump, as well as possible subsequent visits, if
the first start-up is impossible;
d) costs of periodic inspections, maintenance and consumables; e) costs of cleaning
the hydraulic system and possible rinsing of heat exchangers;
f) the total cost of repair and travel in the event of an unjustified complaint;
g) travel costs according to the current price list of the Authorised Service Partner
in the event of failure to make the device available despite the agreed repair date.
4.5. The warranty service of the device will be performed only if the heat pump is
registered and the User's personal data is provided in the heat pump registration system
on the Guarantor's website. If the User does not agree to enter data into the heat pump
registration system, the warranty for the device is limited to 24 months from the date of
purchase of the device.
4.6. The warranty does not exclude, limit or suspend the User's rights under the provisions
on the direct Seller's warranty for defects in the sold item. Any warranty disputes arising,
or likely to arise, between the Guarantor and a User who is not a Consumer within the
meaning of applicable law, shall be submitted to the court having jurisdiction over
the registered office of Refsystem sp. z o.o. Other warranty conditions are regulated in
particular by the provisions of the Civil Code and the Act of May 30, 2014 on consumer
rights (Journal Laws of 2018, item 1025 as amended).
IMPORTANT! THE MANUFACTURER RESERVES THE RIGHT TO ALTER THE WARRANTY
TERMS WITHOUT PRIOR NOTICE.
THE CURRENT WARRANTY TERMS ARE AVAILABLE ON THE WEBPAGE: www.heiko.pl
Warranty terms

16
1. Indoor unit
THERMAL 6/9/12/15/19
Main Components
Cable gland
Hot service water
Central heating
Control panel
Door
Pump powered
Control box cover
Water pump
Electrical heater
Water pump
Safety valve kit (4way, G1”)

17
2. Outdoor Unit
THERMAL 6/9/12
THERMAL 1519
THERMAL 6
GWP 675: 0.61 tonne CO2 equivalent, refrigerant/amount: R32/0.9kg
THERMAL 9
GWP 675: 0.95 tonne CO2 equivalent, refrigerant/amount: R32/1.4kg.
THERMAL 12
GWP 675: 1.22 tonne CO2 equivalent, refrigerant/amount: R32/1.8kg.
THERMAL 15
GWP 675: 1.72 tonne CO2 equivalent, refrigerant/amount: R32/2.55kg.
THERMAL 19
GWP 675: 1.76 tonne CO2 equivalent, refrigerant/amount: R32/2.6kg.
Main Components
Air
supply
Air
supply
Air
supply Air
outlet
Air
outlet
Electrical connection
Installation supply
Installation supply
Return from the
installation
Return from the
installation
Air
supply

18
Data sheet
Model Thermal 6 Thermal 9 Thermal 12 Thermal 15 Thermal 19
Seasonal space heating
energy efficiency rating,
temperate climate
LWT=35°C A+++ A+++ A+++ A+++ A+++
LWT=55°C A++ A++ A++ A++ A++
Rated heat capacity,
including all auxiliary heating
units, temperate climate
(-10°C)
LWT=35°C kW 4 6 8 12 16
LWT=55°C 4 6 7 11 15
Seasonal space heating
energy efficiency, temperate
climate
LWT=35°C % 186.7 186 185.5 196.8 190.5
LWT=55°C 133.2 130.4 129.3 130.2 130.11
Annual energy consumption,
temperate climate
LWT=35°C KHh 1827 2826 3225 4829 6953
LWT=55°C 2809 3728 3997 7602 7750
Indoor sound power level dB(A) 44 44 44 44 44
Outdoor sound power level dB(A) 52 53 52 59 61
Special precautions Before installing, read the installation and
service manuals.
Energy Efficiency N/A
Rated thermal power,
including all auxiliary heating
units, cold climate
LWT=35°C kW 3 5 7 10.8 15.1
LWT=55°C kW 3 5 6 10.6 14.3
Rated thermal power,
including all auxiliary heating
units, warm climate
LWT=35°C kW 6 8 10 13.8 18.2
LWT=55°C kW 6 7 8 13.1 16.1
Seasonal space heating
energy efficiency, cold
climate
LWT=35°C % 155 153 156 160 156
LWT=55°C % 117 105 110 115 110
Seasonal space heating
energy efficiency, warm
climate
LWT=35°C % 189 192 194 196 194
LWT=55°C %147 143 142 143 140
Annual energy consumption
as final energy amount, cold
climate
LWT=35°C kWh 2071 3149 4020 7020 8825
LWT=55°C kWh 3089 4100 4112 7910 9930
Annual energy consumption
as final amount, warm
climate
LWT=35°C kW 1710 3094 3480 6243 8105
LWT=55°C kW 2250 3510 3560 6913 8590
Heat pump power supply V/Ph/Hz 220-
240/1/50
220-
240/1/50
220-
240/1/50
380-
420/5/50
380-420/5/50
Electric heater power supply V 230 400 400 400 400
Heating (LWT=35°C) (Outside
temperature 2°C, 85% RH,
EWT30°C,LWT 35°C)
Efficiency kW 6.1 7.8 10.1 13.8 18.5
COP 3.8 3.87 3.9 4 4.47

19
Data sheet
Heating (LWT = 35°C)
(Outdoor temperature 7°C,
85% RH, EWT 47°C, LWT 55°C)
Efficiency kW 6.5 9.2 11.6 15.5 18.5
COP 4.61 4.38 4.3 54.47
Cooling (LWT = 18°C)
(Outdoor temperature 35°C,
EWT 23°C, LWT 18°C)
Efficiency kW 7.45 9.5 9.8 18.6 22.5
EER 4.05 4.23 3.9 4 7.35
Cooling (LWT = 7°C)
(Outdoor temperature 35°C,
EWT 12°C, LWT 7°C)
Efficiency kW 7.45 9.5 9.8 13.1 15.8
EER 4.05 4.23 3.9 3 2.94
Overcurrent protection of the I.U. B 25 25 25 25 25
Indoor unit power supply
(no. of conductors x size)
mm2 3x2.5 YKY 3x2.5 YKY 3x4 YKY 3x2.5 YKY 3x2.5 YKY
Overcurrent protection of the O.U. B With I.U. With I.U. With I.U. 25 (3L) 25 (3L)
Outdoor unit power supply (no. of
conductors x size)
mm2 3x2.5 YKY 3x2.5 YKY 3x4 YKY 5x4 YKY 5x4 YKY
Indoor unit dimensions
(WxHxD)
net/gross mm 570x550x260/
620x600/310
570x550x260/
620x600/310
570x550x260/
620x600/310
570x550x260/
620x600/310
570x550x260/
620x600/310
Outdoor unit dimensions
(WxHxD)
net/gross mm 1010x370x700/
1060x420x750
1165x370x845/
1200x420x900
1165x370x845/
1200x420x900
1085 x 390 x
1450 /
1185x400x1550
1085 x 390 x
1450 /
1185x400x1550
Weight, net/gross Indoor unit kg 25/51 25/31 25/31 25/31 25/31
Weight, net/gross Outdoor
Unit
kg 65/76 78/90 85/94 130/140 140/150
Compressor Type Twin, rotary - 1
Sensors TC (CH system temp.), TW (HUW temp.), TV1 (1st circuit temp.),TV2 (2nd
circuit temp.), TR (room temp.)
Integrated electric heater kW 3 6 6 6 6
Compressor manufacturer Mitsubishi Mitsubishi Mitsubishi Mitsubishi Mitsubishi
Refrigerant Type /
amount of
gas
kg R32/0.9 R32/1.4 R32/1.8 R32/2.55 R32/2.6
Heat exchanger Plate heat exchanger
Recommended operating
range
Refrigera-
tion
°C 0-50 0-50 0-50 0-50 0-50
Heating °C -25 - 45 -25 - 45 -25-45 -25 - 45 -25 - 45
HUW °C -25 - 55 -25-55 -25-55 -25 - 55 -25 - 55
Water-side connection Type Inch 1115/4 5/4
Water pump Max.
delivery
head
m7.5 7.5 7.5 7.5 7.5
Water outlet temperature
range
Refrigera-
tion
°C 7-25 7-25 7-25 7-25 7-25
Heating °C 20-55 20-55 20-55 20-55 20-55
DHW
(tank)
°C 25-55 25-55 25-55 25-55 25-55

20
Capacity tables
HEATING EFFICIENCY TABLE FOR HEIKO THERMAL 6
Outdoor
temperature (°C)
Water outlet
temperature (ºC)
Compressor
Speed (Hz)
Heating
capacity (W) Input power COP
DB12/WB10
55.0
79 Hz 6329 2125 3.0
67 Hz 5394 1779 3.0
55 Hz 4367 1464 3.0
43 Hz 3206 1159 2.8
35.0
79 Hz 7274 1390 5.2
67 Hz 6119 1154 5.3
55 Hz 5021 933 5.4
43 Hz 4002 725 5.5
DB7/WB6
55.0
90 Hz 5698 2193 2.6
79 Hz 5573 2095 2.7
67 Hz 4566 1759 2.6
55 Hz 3605 1449 2.5
43 Hz 2373 1141 2.1
35.0
90 Hz 7454 1652 4.5
79 Hz 6492 1391 4.7
67 Hz 5558 1170 4.8
55 Hz 4475 942 4.8
43 Hz 3455 738 4.7
DB2/WB1
55.0
82 Hz 4723 2128 2.2
79 Hz 4742 2043 2.3
67 Hz 3874 1711 2.3
55 Hz 3057 1407 2.2
43 Hz 2109 1110 19
35.0
82 Hz 6131 1613 3.8
79 Hz 5536 1378 4.0
67 Hz 4592 1166 3.9
55 Hz 3870 957 4.0
43 Hz 2868 740 3.9