tiki TCA1ZVNT User manual

INSTRUCTIONS FOR USE
EN
TCA1ZVNT

2

3
EN
WARNINGS
This device 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 if they have been given
supervision or instruction concerning use of the device in a safe way and understand the hazards
involved.
Children should not play with the device.
Cleaning and user maintenance shall not be performed by children without supervision.
The device must be transported in an upright position. As an exception it can be tilted up to 35° in any
direction. Take care not to damage the housing and the vital parts of the device during transport.
The device is not intended for use in premises where corrosive and explosive substances are present.
Connection of the device to the power mains must take place in accordance with electrical installation
standards.
Between the device and permanent fixture, please install a disconnect switch to separate all poles
from the power supply network in accordance with the national installation regulations.
A damaged power cord must be replaced exclusively by the manufacturer, service provider or
authorized personnel, in order to avoid danger.
To avoid damage of the heat pump’s aggregate, the device must not be operated without a medium in
the system! The system must be deaerated!
Installation should be carried out in accordance with the valid regulations and according to the
instructions of the manufacturer. Installation must be performed by qualified personnel.
Elements in the electronic control unit are live also when the switch-off button (9) on the heat pump is
pressed.
If an electric heater is used in the hot water tank, it must be protected by an additional thermal cut-off
for protection in case of failure of the operating thermostat.
The device must be placed in a dry, non-freezing environment, if possible, in the vicinity of other
heating sources, with a temperature above 5 °C. The device shall not be placed outdoors.
Please do not attempt to fix any defects of the device by yourself. Call the nearest authorised service
provider instead.
The surface of the heat exchanger in the hot water tank must be at least 0.8 m2!
In case of temperature drop of the additional heating source and enabled circulation of water through
the heat exchanger in the hot water tank, uncontrolled loss of heat from the tank may occur. When
connecting to other heating sources, correct temperature regulation must be ensured.
In case of connection to other heating sources, the ECHP feature must be activated! Combination of
both sources can lead to overheating of the domestic water and, consequently, excessive pressures.
Use of a circulation conduit on the hot water tank leads to additional heat losses.
Do not cover or place objects on the heat pump.
Water in the pipe connection with the hot water tank can exceed 60 °C. Burn hazard!
Start using the device only after the installation and connection of all the safety elements.
All the connections on the water installation of the heat pump must be galvanically isolated.
The product contains fluorinated greenhouse gases. Hermetically closed.
Our products incorporate components that are both environmentally safe and harmless to health, so they can be
disassembled as easily as possible and recycled once they reach their final life stage.
Recycling of materials reduces the quantity of waste and the need for production of raw materials (e.g. metals) which requires
a substantial amount of energy and causes release of harmful substances. Recycling procedures reduce the consumption of
natural resources, as the waste parts made of plastic and metal can be returned to various production processes.
For more information on waste disposal, please visit your waste collection centre or the store where the product was purchased.
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!

4
EN
Dear Buyer, thank you for purchasing our product.
PRIOR TO THE INSTALLATION AND FIRST USE OF THE HEAT PUMP, PLEASE READ THESE
INSTRUCTIONS CAREFULLY.
The heat pump has been manufactured in compliance with the relevant standards that allow the manufacturers the use of the CE
symbol. Its technical characteristics are indicated on the data plate, located on the back side of the heat pump.
The heat pump must be connected by a qualified professional. Interventions in its interior for repair purposes can only be
performed by an authorised maintenance service provider. Be especially careful when following instructions in case of faults and
for the safe use of the heat pump.
Store this booklet in case you may have any doubts about the functioning or maintenance.
The installation manual and user manuals are available on our website http://www.tiki.si. Authorised maintenance personnel are
available for occasional maintenance. They will help you with their vast experience.
The heat pump can also be used in combination with other heating sources.
FIELD OF USE
This type of heat pump is intended primarily for heating domestic water in households and other users, where the daily consumption
of hot water (40 °C) does not exceed 400 to 700 l (recommended size of water tank from 120 l to 500 l, surface of heat exchanger in
the hot water tank must be at least 0.8 m2). The set temperature should meet the actual needs. Recommended temperature
settings are between 45 and 55 °C. Higher temperatures are not recommended as they reduce the efficiency (COP) and
extend the time of heating, thereby increasing the number of operating hours. As the heat pump cools its surroundings during
operation, the benefit of using the heat pump is doubled (heating of water – cooling of room). The operation of the heat pump is
completely automatic.
The device must be connected to a heat exchanger in the hot water tank. It needs power supply in order to operate. Inlet and outlet of
air can also be carried out by inlet/outlet of air from another room. It is recommended to leave enough room above the device (see
Figure 2). The heat pump may not be used for purposes other than those defined in these Instructions. The device is not designed for
use in rooms where corrosive or explosive substances are present. The manufacturer shall not assume any liability for damages
caused by incorrect installation or misuse that are not in compliance with the Instructions for installation and use.
The instructions for use are a constituent and important part of this product and must be delivered to the customer. Read the warnings
carefully, as they contain important directions regarding safety during installation, use and maintenance.
Keep these Instructions for later use.
The marking of your heat pump is indicated on the data plate, which is located on the back side of the device.
Once the packaging is removed, check the contents. When in doubt, contact your dealer. Never let children play with the packaging
parts (clamping, plastic bags, expanded polystyrene, etc.) as these present a potential risk. Do not dispose of these materials in the
environment.
The heat pump is not designed for use in rooms where corrosive or explosive substances are present.
STORAGE AND TRANSPORT
The heat pump must be stored in an upright position in a clean and dry place.
The heat pump must be transported in an upright position. As an exception it can be tilted up to 35° in any direction. Take care
not to damage the housing and the vital parts of the device during transport.
!
!

5
EN
DIMENSIONS AND CONNECTIONS
Fig. 1: Connection and installation dimensions of the heat pump [mm]
INSTALLATION OF THE HEAT PUMP
The device must be placed in a dry, non-freezing environment, in the vicinity of other heating sources if possible, with a temperature
above 5 °C. The device shall not be placed outdoors. Place the heat pump on a console shelf or atop of the hot water tank if that is
possible. The device can be used with ambient or guided air. To prevent pressure depression in the building, inlet of fresh air must be
enabled at all times. The recommended level of air exchange for an apartment building is 0.5. This means that the entire quantity of
air in the building is replaced every 2 hours.
OPERATION USING AMBIENT AIR
In operation using ambient air, the domestic water is heated only using the energy of the air from the room where the heat pump is
placed. The heat pump is placed in a dry, non-freezing environment, in the vicinity of other heating sources if possible, with
temperatures ranging from 7 to 35 °C and a minimum volume of 20 m3. Generally we recommend a big enough and well-ventilated
room with temperature ranging between 15 and 25 °C, which represents optimum conditions for the operation of the heat pump.
When selecting a room for the placement of the hot water tank and heat pump, great care must be taken that the room is dust-free, as
dust negatively affects the performance of the heat pump.
Several manners of use of the suction and outlet opening are possible in the heat pump (see Figure 2).
For ambient air, it is most advisable to use the side connections for air inlet and outlet, as the mixing of air is minimised.
O160
152
190
IZ VZ
VZIZ
490
375
375
750
670
20-60
550-590
710
730
LEGEND
IM Outlet of medium (red cap) G3/4
VM Inlet of medium (blue cap) G3/4
VZ Air inlet
IZ Air outlet

6
EN
Fig. 2: Manners of use of suction and outlet openings
OPERATION USING GUIDED AIR
In operation using guided air, the heat pump captures and discharges air also from other premises via a pipeline system. It is
advisable that the pipeline system is insulated, to prevent condensate to form inside the pipes. When capturing air from outside, the
exterior part of the pipe must be covered with a mesh to prevent large particles and snow from entering the device.
To ensure constant efficient operation of the heat pump, you can build in directing flaps and take air from the room or from outside
and then return it back to the premises or outside. The temperature of the intake air must meet the specifications of the device (see
technical characteristics table).
Fig. 3: Operation using guided air
DETERMINING PRESSURE DROPS IN THE PIPELINE SYSTEM FOR AIR INLET AND OUTLET
The heat pump enables different modes of installation of pipeline connections of inlet and outlet air. It is recommendable to use the
connections that enable the simplest connection of the device of the channel system. When planning the pipeline system for inlet and
outlet of air to and from the heat pump, it is of key importance to take into account the aerodynamic characteristic of the heat pump
ventilator, which also results in the loss of static pressure. The aerodynamic characteristic of the pump is shown in the diagram and
presented as pressure drop corresponding to the air flow. The operating point of the fan of the heat pump is at 100 Pa of static
pressure or at air flow of 330 m3/h. As the working drop of static pressure in the air pipeline system, the nominal operation is
determined at Δp= 100 Pa. If the calculations show higher pressure drops, the speed of the fan can be increased. Increase of speed
is efficient all the way to 80 %, and above this value the flow rate no longer increases, so elevation above this value is not advised, as
it will only lead to increased noise.
The diagram shows the following zones:
•High efficiency zone – zone of high air flows (above 300 m3/h) requires lower pressure drops (installation without or with short
channels) and setting of the fan at 60 or 80 %.
•Operating zone – zone of medium air flows (between 200 and 300 m3/h). This area represents a 40% setting of the fan and
minimum pressure drops or 60 or 80 % and pressure drops between 50 and 300 Pa.
•Extended zone. It represents a wider range of settings and high pressure drops. Extended zone can be used only if the temperature
of air is above 20 °C. If this condition is not met, efficiency will start to decline.

7
EN
Fig. 4: Aerodynamic characteristic of the heat pump fan
Values of the total drop of static pressure are calculated by adding up the losses of an individual element built in the air pipeline
system. Values of static pressure drops of an individual element (drops of static pressure of elements are indicated for internal
diameter of 150 mm) are shown in the table below.
Types of elements and corresponding values of pressure drops
Fig. 5: Schematic demonstration of the basic elements in a pipeline system for inlet and outlet of air
Calculations of the values of pressure drops are merely informative. For more precise calculation of air flows, the detailed
characteristics of the elements must be taken into account or the designer must be consulted. After installation it is advisable to
measure the air flows in the pipeline system. The total loss of static pressure is calculated by adding up the losses of static pressure
in individual elements built into the pipeline system. The recommended nominal operation is at a total drop of about 100 Pa. If flow
rates are reduced, the COP starts dropping.
Example of calculation
Connecting the heat pump to the same pipeline system as a kitchen extractor fan or taking air out of several small apartments or suites
is not allowed.
When the heat pump is operating, condensate is formed in the interior of the aggregate. It needs to be drained into the sewage
system via a flexible Ø16 mm drain pipe for condensate at the back of the heat pump. The quantity of the condensate depends on the
temperature and humidity of air.
0
700
650
500
550
400
450
400
350
300
250
200
150
100
50
0
20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500
high efficiency zone
Pressuredifference[Pa]
40 %
[m /h]Air flow 3
80 %
60 %
operating zone
extended zone for higher ambient temperatures
operation point
=DN
160-200
600
e)
a)
d)
b) c)
f)
Type of element Static pressure drop value
a) Elbow 90° 5 Pa
b) Elbow 45° 3 Pa
c) Flexible tube 5 Pa/m
d) Spiral tube 3 Pa/m
e) Suction grill 25 Pa
f) Roof vent for air outlet 10 Pa
Number of
elements Δp (Pa) ΣΔp (Pa)
Elbow 90° 4520
Flexible tube 95 Pa/m 45
Suction grid 125 25
Roof vent for air outlet 110 10
Total 100
!

8
EN
Fig. 6: Condensate drainage
To minimize the transfer of noise and vibrations through walls into the premises where this could be disturbing (bedroom, resting
areas) please take the following measures:
•install flexible joints for hydraulic connections
•install a flexible tube for the pipeline of inlet/outlet air
•plan vibration insulation for wall openings
•plan noise dampers for inlet/outlet air
•pipelines for inlet/outlet air should be attached using noise dampers
•plan vibration insulation against the wall or floor
•use installation feet.
CONNECTING THE HEAT PUMP TO A HOT WATER
STORAGE TANK
The heat pump must be installed higher than the heat exchanger of the hot water tank. Otherwise, a deaerator must be installed on
the highest point of the pipeline connection. The surface area of the heat exchanger in the hot water tank must be at least 0.8 m2.
Medium inlet and outlet on the heat pump pipes are colour-coded. The medium inlet is marked with blue, and medium outlet is
marked with red. It is recommended to insulate the pipeline connection. The pipeline connection between the heat pump and the hot
water tank must include a safety valve and an expansion tank. Installing a safety valve is mandatory in order to assure safe operation
(recommended: nominal pressure of 0.3 MPa (3 bar)). The outflow nozzle on the safety valve must have an outlet into the
atmosphere. The volume of the expansion tank must be at least 5 % of the volume of the system (volume of the heat exchanger in the
tank, pipeline and heat pump). The volume of the pipeline and heat exchanger in the heat pump is approximately 1 l. The pipeline
connections must have a minimal diameter of 3/4", i.e. DN 25, which will ensure low enough pressure drops and consequently
maximum distance of the aggregate from the heat exchanger will be 10 m.
At the lowest part of the pipeline it is recommended to install an outlet/filling valve. It is also recommended to build in a one-way valve
at the entry side of the pipeline in the heat pump (see Figure 7a).
The temperature sensor must be installed in the upper half of the height of the heat exchanger and higher than the heater if installed
and connected to the heat pump (see Figure 7a).
Fig. 7a: Connecting the heat pump to a hot water storage tank
The heat pump may be connected to a hot water tank only via the heat exchanger within the hot water tank!
Due to the danger of damaging the aggregate, the heat pump cannot operate without a medium in the system!
The system must be deaerated! The deaerator valve must be open (Fig. 7a).
Before filling the system, it must be cleaned of all impurities and an impurity filter must be installed.
3
2
1
7
8
9
9
4
6
5
LEGEND
1Filling / outlet valve
2Manometer
3Safety valve
4Expansion tank
5Filter for impurities
6Electric heater
7Temperature sensor
8One-way valve
9Dielectric connector
!
!
!
!

9
EN
CONNECTING THE HEAT PUMP TOGETHER WITH ANOTHER HEATING SOURCE
In this case the heat pump is a secondary source and is turned on when heating from another (primary) source (central heating boiler,
solar collectors etc.) is not possible. To set the controls of the heat pump, see chapter “EXTERNAL CONTROLLING OF THE HEAT
PUMP (ECHP FEATURE)”.
In case of connecting other sources of heat the ECHP feature must be activated! Combination of both sources can lead
to overheating of domestic water and, consequently, too high pressures.
Fig. 7b: Connecting the heat pump to hot water storage tank in combination with another (primary) source of heating
CONNECTING TO THE POWER SUPPLY NETWORK
To connect the heat pump it is necessary to ensure wiring that is appropriate for 16 A load. Connection of the heat pump to the power
supply network must be conducted in accordance with electrical installation standards. Between the heat pump and the permanent
installation, an all-poles disconnect switch should be installed in accordance with the national installation standards.
In case of using an electric heater in the hot water storage tank it must be protected by a thermal cutoff. The thermostat on the hot
water tank must be set to the maximum value. If the set temperature of the heat pump exceeds the temperature set on the hot water
tank thermostat, the storage tank thermostat takes over the regulation.
Fig. 8a: Electric circuit diagram
* If you connect the electric heater you must enable it in the user menu (see chapter “CONNECTING AN EXTERNAL ELECTRIC
HEATER").
!
7
2
1
4
9
9
8
8
6
5
3
10
11
LEGEND
1Filling/outlet valve
2Manometer
3Safety valve
4Expansion tank
5Filter for impurities
6Electric heater
7Temperature sensor
8One-way valve
9Dielectric connector
10 Circulation pump
11 Deaerator
RAZVODNICA
SPLITTING BOX
KRMILNA ENOTA E6
CONTROL UNIT E6
4
5
3
2
6
7
T4
T3
T1
T2
1a
A B C* D
1b
16 A 10 A6 A
LEGEND
1a Junction box
AConnecting cable
BConnection of the contact for controlling additional
functions
C* Connection of electric heater (max. 2000 W)
1b Temperature sensor junction box
DTemperature sensor
2Control unit
3Pressure switch
4Compressor
5Circulation pump
64-way valve
7Fan
T1 Inlet water temperature sensor
T2 Outlet water temperature sensor
T3 Inlet air temperature sensor
T4 Evaporator temperature sensor

10
EN
Fig. 8b: Connecting to power supply network (position A)
Before connecting to the power supply network a connection cable must be built in the junction box with a minimum diameter of at
least 1.5 mm2 (H05VV-F 3G 1.5 mm2).
Connection must be carried out by a trained professional.
HEAT PUMP OPERATION
After the heat pump is connected to the heat exchanger of the hot water tank, the water and power supply network, and to the water-
filled tank, it is ready to be operated. The heat pump can be operated using an LCD touch screen (Figure 9). Features and displays
depend on the models.
Fig. 9: Control display
STARTING/STOPPING THE HEAT PUMP
A
16 A
1a
!
4
3
2
1
5
678910 11
12
13
14
15
1617
181920
LEGEND
1Indication, overview of errors, access to the user menu
2Signalisation of the operation of the heater,
Signalisation of the reserve mode
3Signalisation of the operation of the compressor
4Activation and setting of the "VACATION" programme
5Display of quantity of hot water (does not apply for
TCA1ZVNT)
6Activation of accelerated heating "TURBO",
activation of the "HOT" feature
7Display of day of the week
(1.. Monday, …, 7.. Sunday)
8Reducing the value
9Heat pump ON/OFF switch
10 Increasing the value
11 Activation of ventilation,
Activation of ventilation in timer mode
12 Display and setting of temperature (°C/°F)
13 On/off "SMART" feature * depending on the model
14 Signalisation of defrosting
15 Signalisation of the operation of the anti-legionella
programme
16 Activation and setting of the timer
17 Display and setting of time
18 Indicator of operation in the Low tariff (LT) mode
19 Indicator of device’s connection to the WiFi network
* depending on the model
20 Signalisation of the operation of the PV feature
Main display
•To start the heat pump, press the symbol.
•By holding (3 s) the symbol the heat pump is switched off.
After starting the heat pump, the compressor and fan of the heat pump always operate for a
minimum of 5 min (minimum time for operation of compressor).
After shutting off the heat pump, the compressor and fan don’t operate for at least 20 minutes
(minimum time for compressor standby). If a request to activate the compressor is made, this
does not happen. The symbol flashes on the screen.
After standby, the compressor and fan activate automatically. The symbol is displayed.

11
EN
List of parameters and features in the user menu
SETTING UP DISPLAY ILLUMINATION
Saving mode
•After 1 minute of inactivity (no pressing on the display) the display always reverts to saving
mode. The saving mode shows the current water temperature and, depending on the model, the
symbols of features currently in progress (see Figure 9).
•Pressing anywhere on the saving mode display shows the main display.
Setup of features of the heat pump is only possible on the main display!
1
Some parameters and features are set up in the user menu.
•You can enter the user menu by holding (for 3 s) the field no. 1 (for setting the parameters and
features see next chapters).
Group of parameters Parameter Description
01 Anti legionella programme
01
02 Automatic ventilation feature
03 Setting the speed of the fan
04 Setting the hysteresis of start-up
05 Setting the display of temperature in °C or °F
06 Setting up the time display 12/24
07 Setting display illumination
08 Manual switch to reserve mode of operation (heating with the electric heater)
09 Electric heater (yes/no)
02
01 PV feature (operation using photovoltaics)
02 LT feature (operation with regard to the electric energy tariff)
03 ECF feature (external control of fan)
04 ECHP feature (external control of heat pump)
1
•To enter the user menu hold (3 s) field no. 1.
•By pressing field no. 1 again, you can move by one step back on each step, thus exiting the
user menu.
•Parameter group starts to flash.
•By pressing field + or – select the number of the group of parameters 01.
•Confirm the setting by pressing the symbol.
•Parameter number starts to flash. The current parameter value is displayed.
•By pressing field + or – select the number of the parameter 07.
•Confirm the setting by pressing the symbol.
1
•Parameter value starts to flash.
•By pressing field + or – choose between the three levels of display illumination.
•Store the setting by pressing the symbol.
•You can exit the user menu by pressing field no. 1 (moves you one step back) or wait for the
unit to exit the menu automatically after a while.

12
EN
OPERATION OF THE HEAT PUMP AT LOWER AND HIGHER TEMPERATURES OF AMBIENT AIR
a) low-temperature version of the heat pump with connected and enabled electric heater
When the device is started, the ventilator starts first. If the temperature of the incoming air is lower than -7°C or higher than 35 °C,
the fan shuts off and the electric heater is switched on. The heat pump operates in the reserve mode (the symbol is displayed). The
possibility of switching to the normal mode is checked cyclically. If the temperature of the incoming air is higher than -7°C or lower
than 35 °C the heat pump switches to the normal mode of operation (the symbol is shown). The heater switches off.
At lower air temperature, the evaporator defrosting cycle is started if necessary (the symbol is shown). Defrosting lasts until the
conditions are met for normal operation of the heat pump. After successful defrosting, the heat pump reverts back to normal
operation.
If defrosting is unsuccessful, the unit reports an error. The field no. 1 on the display starts to flash, and a continuous beeping noise is
heard. In field no. 12 the error code E10 is displayed (see chapter "OPERATION ERRORS"), and the device automatically switches to
heating with an electric heater (symbol is displayed).
b) low-temperature version of the heat pump without a connected electric heater
When the device is started, the ventilator starts first. If the temperature of the incoming air is lower than -7°C or higher than 35 °C,
the fan shuts off. In these conditions the domestic water is not heated. The possibility of switching to the normal mode is checked
cyclically. If the temperature of the incoming air is higher than -7°C or lower than 35 °C the heat pump switches to the normal mode
of operation (the symbol is shown). At lower air temperature, the evaporator defrosting cycle is started if necessary (the symbol
is shown). Defrosting lasts until the conditions are met for normal operation of the heat pump. After successful defrosting, the heat
pump reverts back to normal operation (the symbol is shown).
If defrosting is unsuccessful, the unit reports an error. The field no. 1 on the display starts to flash, and warning beeps are heard. In
field no. 17 the error code E10 is displayed (see chapter "OPERATION ERRORS").
SETTING THE HOUR AND DAY OF THE WEEK
SETTING TIME DISPLAY 12/24
17
•Hold (for 3 s) field no. 17.
7
•The hour segment starts to flash.
•By pressing + or – set the hour.
•Confirm the setting by pressing the symbol.
•The minutes segment starts to flash.
•By pressing + or – set the minutes.
•Confirm the setting by pressing the symbol.
•The day of the week starts to flash (field no. 7).
•By pressing + or – set the day of the week (1… Monday, …, 7… Sunday).
•Confirm the setting by pressing the symbol.
7
•The illuminated number in field no. 7 shows the number of the day of the week (1.. Monday, …,
7.. Sunday).
•The change of time display 12/24 can be set in the user menu.
1
•To enter the user menu, hold (for 3 s) field no. 1.
•By pressing field no. 1 you can move one step back, thus exiting the user menu.
•The parameter group starts to flash.
•By pressing + or – select the number of the parameter group 01.
•Confirm the setting by pressing the symbol.

13
EN
SETTING THE TEMPERATURE
SETTING THE DISPLAY OF TEMPERATURE IN °C OR °F
•The parameter number starts to flash. At the same time the current value of the parameter is
shown.
•By pressing + or – select the number of the parameter 06.
•Confirm the setting by pressing the symbol.
1
•Parameter value starts to flash.
•By pressing + or – select between 12 or 24-hour time display.
•Store the setting by pressing the symbol.
•Exit the user menu by pressing field no. 1 (moves you one step back) or wait for the unit to exit
the menu automatically after a while.
12
•Press field no. 12.
12
•Field 12 starts to flash.
•By pressing + or – set the desired temperature. Factory setting of the temperature is 55 °C.
•Store the setting by pressing the symbol.
The set temperature should meet the actual needs. Recommended temperature settings
are between 45 and 55 °C. Higher temperatures are not recommended as they reduce the
efficiency (COP) and extend the time of heating, thereby increasing the number of
operating hours.
1
•To enter the user menu hold (for 3 s) field no. 1.
•By pressing field no. 1 again, you can move one step back, thus exiting the user menu.
•The parameter group starts to flash.
•By pressing + or – select the number of the parameter group 01.
•Confirm the setting by pressing the symbol.
•The parameter number starts to flash. At the same time the current value of the parameter is
shown.
•By pressing + or – select the number of the parameter 05.
•Confirm the setting by pressing the symbol.

14
EN
SETTING THE HYSTERESIS OF START-UP
As a default setting, the hysteresis of start-up automatically adjusts to the set temperature and is adjusted so that the device functions
as efficiently as possible. The start-up hysteresis can be set in the user menu.
By modifying the hysteresis of start-up, you will modify the settings that may impair the energy efficiency of heating of
water, change the frequency of start-ups and time of heating!
ANTI-LEGIONELLA PROGRAMME
If the water in the tank does not reach 65 °C for 14 consecutive days, the anti-legionella programme switches on and heats the water
to 70 °C (if an electric heater is connected) or up to 65 °C (if electric heater is not connected) and maintains it for 60 minutes.
The frequency of the start of anti-legionella programme (1 to 90 days) or shutdown of the anti-legionella programme can be set in the
user menu.
1
•Parameter value starts to flash.
•By pressing + or – select the display of temperature either in °C or °F.
•Store the setting by pressing the symbol.
•Exit the user menu by pressing field no. 1 (moves you one step back) or wait for the unit to exit
the menu automatically after a while.
!
1
•To enter the user menu hold (for 3 s) field no. 1.
•By pressing field no. 1 again, you can move one step back, thus exiting the user menu.
•The parameter group starts to flash.
•By pressing + or – select the number of the parameter group 01.
•Confirm the setting by pressing the symbol.
•The parameter number starts to flash. At the same time the current value of the parameter is
shown.
•By pressing + or – select the number of the parameter 04.
•Confirm the setting by pressing the symbol.
1
•Parameter value starts to flash.
•By pressing + or – select the automatic adjustment of hysteresis (auto) or hysteresis range
between 5 and 10 °C (40 to 50 °F).
•Store the setting by pressing the symbol.
•Exit the user menu by pressing field no. 1 (moves you one step back) or wait for the unit to exit
the menu automatically after a while.
•During the operation of the anti-legionella programme the symbol is displayed.
Warning: after heating in the anti-legionella programme, the temperature of the water in
the hot water storage tank is 65 °C or more, regardless of the temperature set on the
device.
!

15
EN
DISPLAY OF QUANTITY OF HOT WATER IN THE HEAT PUMP (NOT APPLICABLE TO
TCA1ZVNT)
"TURBO" FEATURE
The "TURBO" feature can be turned on if you need more hot water than the heat pump can heat in a very short amount of time. In the
TURBO mode, the heat pump and electric heater work together. If the symbol in field no. 6 is not visible, the "TURBO" feature is
not available.
1
•To enter the user menu hold (for 3 s) field no. 1.
•By pressing field no. 1 again, you can move one step back, thus exiting the user menu.
•The parameter group starts to flash.
•By pressing + or – select the number of the parameter group 01.
•Confirm the setting by pressing the symbol.
•The parameter number starts to flash.
•By pressing + or – select the number of the parameter 01.
•Confirm the setting by pressing the symbol.
1
•Parameter value starts to flash.
•By pressing + or – you can set the frequency (number of days) of start-up of the anti-legionella
programme or turn off the anti-legionella programme (OFF).
•Store the setting by pressing the symbol.
•Exit the user menu by pressing field no. 1 (moves you one step back) or wait for the unit to exit
the menu automatically after a while.
5
Field no. 5 shows the symbol:
- no hot water
- small quantity of hot water
...
- large quantity of hot water
6
•Hold (for 3 s) field no. 6.
12
•Field no. 12 starts to flash.
•By pressing + or – set the temperature of the "TURBO" feature.
•Store the setting by pressing the symbol.

16
EN
"HOT" FEATURE
The "HOT" feature can be used if you want to heat the water to a temperature higher than the currently set temperature. If the
symbol in field no. 6 is not visible, the "HOT" feature is not available.
"VACATION" MODE
In the “VACATION” mode you can set the number of days when the heat pump should maintain the minimum temperature of water
approx. 10 °C).
6
•While the feature is on, field no. 6 is illuminated.
•When the set temperature is achieved, the device resumes the operation before the activation of
the TURBO feature.
•The "TURBO" feature can be switched off manually by pressing field no. 6 briefly (main display).
In versions without a heater, the "TURBO" feature is not enabled.
6
•Briefly press field no. 6.
12
•Field no. 12 starts to flash.
•By pressing + or – set the temperature of the "HOT" feature.
•Store the setting by pressing the symbol.
6
•While the feature is on, field no. 6 is illuminated.
•When the set temperature is achieved, the device resumes the operation before the activation of
the HOT feature.
•The "HOT" feature can be switched off manually by pressing field no. 6 briefly (main display).
4
•Press field no. 4.
12
•Field no. 12 starts to flash.
•By pressing + or – set the number of days of your vacation.
•Store the setting by pressing the symbol.

17
EN
TIMER FEATURE
In the TIMER feature you can set the timer points for operation of heat pump at various temperatures. The feature enables four time
points daily for different settings of the water temperature or heat pump shut-down. The next timer point cannot be set one hour after
the previous setting. The time setting step is 10 min. If the symbol in field no. 16 is not visible, the TIMER feature is not available.
When setting the timer you must know the habits and take into account the duration of heating times. Senseless settings to which the
system cannot respond will not achieve the set temperature points and will have a negative impact on the heat pump’s efficiency.
SELECTING THE TIMER MODE OF OPERATION
TIMER MODE FOR THE ENTIRE WEEK
4
17
•While the feature is on, field no. 4 is illuminated.
•Field no. 17 shows the number of days remaining until the end of the VACATION mode. If the
display is in the saving mode, touch the display to see the number of remaining days.
•After the set number of days has elapsed, the heat pump resumes the previously set mode of
operation, and illumination of field no. 4 stops.
•The "VACATION" feature can be switched off manually by pressing field no. 4 briefly (main
display).
Heat pump models without a heater
If a heat pump is without a heater, the minimum temperature is maintained by operation of
the heat pump. If the ambient temperature is outside the heat pump's zone of operation,
freeze protection will not work!
16
1.Hold (for 3 s) field no. 16.
7
7
7
2.Field no. 7 starts to flash.
3.By pressing + or – select from among three timer options:
- timer mode for the entire week (in field no. 7 the numbers from 1 to 7 flash),
- timer mode of operation for the period between Monday and Friday and from Saturday to
Sunday (in field no. 7 the numbers 1 to 5 flash ),
- timer mode of operation for each individual day (in field no. 7 number 1 flashes).
4.Confirm the setting by pressing the symbol.
17
5.Field 17 starts to flash.
6.By pressing + or – set the time of the first time point t1.
7.Confirm the setting by pressing the symbol.

18
EN
TIMER MODE OF OPERATION FOR THE PERIOD BETWEEN MONDAY AND FRIDAY AND FROM SATURDAY TO SUNDAY
To set the time points for the period from Monday to Friday, use steps from 5 to 13.
TIMER MODE OF OPERATION FOR EACH INDIVIDUAL DAY
To set the time points for each individual day, use steps from 5 to 13.
Example:
time point t1: time 06:00, set temperature 40 °C,
time point t2: time 09:00, heating OFF (10 °C),
time point t3: time 18:00, set temperature 40 °C,
time point t4: time 21:00, set temperature 55 °C.
Fig. 10: Example of setting the timer
12
8. Field 12 starts to flash.
9. By pressing + or – set the temperature of the first time point t1. If you set the temperature
below 10 °C, field no. 12 displays the word OFF, and the device does not heat water (freeze
protection still works).
10. Confirm the setting by pressing the symbol.
12
11. Field 12 starts to flash.
12. By pressing + or – select whether you want to complete the setting or set the next time point t2
(t3, t4) (YES - NO). If you select NO the setting of the selected segment will be finished. If you
select YES, set the other time points as per the above procedure (from step 5 to 13) – max. 4.
13. Confirm the setting by pressing the symbol.
14. To set the next time interval (Saturday, Sunday) repeat the steps 5 to 13.
14. By pressing + or – select whether you want to copy the settings from the previous day (YES -
NO). If you select "no" set the time points as per instructions (from step 5 to 13). If you select
"YES" step no. 14 will repeat.
15. Confirm the setting by pressing the symbol.
16
•During the operation of the feature, field no. 16 is illuminated.
•Timer mode of operation can be switched off by pressing field no. 16 (main display). The
settings remain stored. If you press no. 16 you can switch it back on.
•If you want to change the settings of the feature, hold (for 3 s) field no. 16 and set it again as per
the above procedure.
t2 t3
OFF (10°C)
t4 t1
00:00 24:00
40 °C 40 °C
55 °C
t1
06:00 09:00 18:00 21:00

19
EN
VENTILATION" FEATURE
The "VENTILATION" feature can be used if you want additional ventilation of premises during the time when the heat pump is not
heating water. You can select between manual activation, timer and external control of the VENTILATION feature.
The set features of heating of domestic water always have priority before the set features of heating!
a) MANUAL ACTIVATION OF "VENTILATION"
In the “VENTILATION " feature you can set the duration and speed of operation of the fan. If the symbol in field no. 11 is not visible,
the "VENTILATION" feature is not available.
b) “TIMER – VENTILATION” FEATURE
In the “TIMER – VENTILATION” feature you can set the time points for fan operation. For each point you can set the time, speed of
the fan or shutdown of the fan. The feature enables four time points a day. The next timer point cannot be set one hour after the
previous setting. The time setting step is 10 min. If the symbol in field no. 11 is not visible, the “TIMER – VENTILATION” feature is
not available.
11
•Briefly press field no. 11.
12
•Field no. 12 starts to flash.
•By pressing + or – set the duration of the “VENTILATION" feature. Up to 30 minutes can be set
with steps of 5 min, and duration of more than 30 minutes can be set with steps of 10 minutes.
After maximum setting of time, the word ON appears on the display, meaning constant operation
of the fan until manual deactivation of the feature.
•Confirm the setting by pressing the symbol.
12
•Field no. 12 starts to flash.
•By pressing + or – set the fan speed. You can select between three levels of speed (L. 1 – low
speed, L. 2 – medium speed, L. 3 – high speed).
•Confirm the setting by pressing the symbol.
11
•During the operation of the feature, field no. 11 is illuminated.
•The ventilation can be switched off by pressing field no. 11 (main display).
11
1.Hold (for 3 s) field no. 11.
12
2.Field no. 12 starts to flash.
3.By pressing + or – you can select between:
- setting the timer (Set)
- activating the timer after the settings have been stored (ON).
4.Confirm the setting by pressing the symbol.

20
EN
SELECTING TIMER MODE OF OPERATION
TIMER MODE OF OPERATION FOR THE ENTIRE WEEK
TIMER MODE OF OPERATION FOR THE PERIOD BETWEEN MONDAY AND FRIDAY AND FROM SATURDAY TO SUNDAY
To set the time points for the period Monday – Friday, use steps 8 to 16.
7
7
7
5.Field no. 7 starts to flash.
6.By pressing + or – select between three options of timer modes of operation:
- timer mode of operation for the whole week (in field no. 7 the numbers 1 to 7 flash),
- timer mode of operation for the period between Monday and Friday and from Saturday to
Sunday (in field no. 7 the numbers 1 to 5 flash),
- timer mode of operation for each individual day of the week (in field no. 7 number 1 flashes).
7.Confirm the setting by pressing the symbol.
17
8. Field no. 17 starts to flash.
9. By pressing + or – set the first time point t1.
10. Confirm the setting by pressing the symbol.
12
11. Field no. 12 starts to flash.
12. By pressing + or – set the speed of the fan during the first time point t1. You can select
between three levels of speed (L. 1 – low speed, L. 2 – medium speed, L. 3 – high speed). and
shut-off (off).
13. Confirm the setting by pressing the symbol.
12
14. Field no. 12 starts to flash.
15. By pressing + or – select whether you want to complete the setting or set the next time point t2
(t3, t4) (YES - NO). If you select "no" the setting of the selected segment will be completed. If
you select "YES" set the following time points (max 4) as per the above procedure (steps 8 to
16).
16. Confirm the setting by pressing the symbol.
17. To set the next time period (Saturday, Sunday) repeat steps 8 to 16.