Drazice OKHE 80-SMART Specification sheet

OPERATING AND
INSTALLATION MANUAL
TANK-TYPE WATER HEATER FOR VERTICAL
MOUNTING
OKHE 80, 100, 125, 160-SMART
Družstevní závody Dražice - strojírna s.r.o.
Dražice 69, 294 71 Benátky nad Jizerou
tel.: [phone]
Fax: +420 / 326 370 980
e-mail: [email protected]

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CONTENTS
1 TECHNICAL SPECIFICATION OF PRODUCT ................................................................................................. 5
1.1 FUNCTION DESCRIPTION ................................................................................................................... 5
1.2 ADVICE FOR CUSTOMERS .................................................................................................................. 6
1.2.1 HOT WATER CONSUMPTION..................................................................................................... 6
1.2.2 ENERGY SAVING......................................................................................................................... 6
1.2.3 EMERGENCY POWER CONSUMPTION ....................................................................................... 6
1.3 DESIGN AND GENERAL HEATER DIMENSIONS................................................................................... 8
1.3.1 DESCRIPTION OF BASIC PARTS OF THE HEATER ........................................................................ 8
1.3.2 HEATER DIMENSIONS ................................................................................................................ 9
2 OPERATION AND FITTING INSTRUCTIONS............................................................................................... 10
2.1 OPERATING CONDITIONS ................................................................................................................ 10
2.2 WALL MOUNTING............................................................................................................................ 10
2.3 PLUMBING FIXTURE......................................................................................................................... 11
2.4 ELECTRIC WIRING ............................................................................................................................ 12
2.4.1 ELECTRIC INSTALLATION GENERAL INFORMATION................................................................. 12
2.4.2 ELECTRONIC THERMOSTAT CONNECTION DIAGRAM ............................................................. 13
2.5 FIRST HEATER COMMISSIONING ..................................................................................................... 14
2.6 PUTTING OUT OF SERVICE, DISCHARGE .......................................................................................... 14
2.7 INSPECTION, MAINTENANCE & CARE FOR THE APPLIANCE ............................................................ 15
3 OPERATION OF THERMOSTAT................................................................................................................. 15
3.1 OPERATING MODES AND THEIR SYMBOLS...................................................................................... 16
3.1.1 SMART MODE .......................................................................................................................... 16
3.1.2 SMART HDO MODE.................................................................................................................. 17
3.1.3 MANUAL MODE....................................................................................................................... 17
3.1.4 MANUAL HDO MODE .............................................................................................................. 17
3.1.5 OPTIMUM IN MODE MANUAL AND MANUAL HDO ................................................................ 17
3.1.6 PROG MODE ............................................................................................................................ 17
3.1.7 ANTI-FREEZE MODE ................................................................................................................. 17
3.2 THERMOSTAT CONTROL.................................................................................................................. 18
3.2.1 LED DISPLAY............................................................................................................................. 18
3.3 FUNCTION DESCRIPTION ................................................................................................................. 18
3.4 THE DISPLAY MODES ON THE DISPLAY............................................................................................ 19

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3.5 SETTING HDO (BULK REMOTE CONTROL) ....................................................................................... 20
3.6 CONTROLS DESCRIPTION................................................................................................................. 22
3.6.1 MODE CHANGE WITH CONTROLLER ....................................................................................... 22
3.6.2 BASIC DISPLAY ......................................................................................................................... 22
3.6.3 TEMPERATURE SETTING .......................................................................................................... 22
3.6.4 TIME SETTING .......................................................................................................................... 22
3.6.5 FAILURE STATE......................................................................................................................... 23
4 SOFTWARE FOR MOBILE DEVICES ........................................................................................................... 23
4.1.1 BASIC DESIGN .......................................................................................................................... 23
4.1.2 PAIRING SCREEN...................................................................................................................... 24
4.1.3 MODE SECTION........................................................................................................................ 24
4.1.4 PROGRAM SECTION................................................................................................................. 25
4.1.5 VACATION SECTION................................................................................................................. 27
4.1.6 STATISTICS SECTION ................................................................................................................ 27
4.1.7 SETTING SECTION .................................................................................................................... 28
4.1.8 INFO AND TIPS ......................................................................................................................... 29
4.1.9 SYNCHRONIZING TIME............................................................................................................. 29
4.1.10 SAVING THE COMPLETED SETTING.......................................................................................... 29
5 IMPORTANT NOTICES .............................................................................................................................. 30
5.1 INSTALLATION REGULATIONS.......................................................................................................... 30
5.2 DISPOSAL OF PACKAGING MATERIAL AND NON-FUNCTIONING PRODUCT.................................... 30

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Meaning of pictograms used in the Manual
Important information for heater users.
Abiding by the recommendations of the manufacturer serves to ensure trouble-free
operation and the long service life of the product.
Caution!
Important notice to be observed.
CAREFULLY READ THIS MANUAL BEFORE INSTALLING OF THE WATER
HEATER!
Dear Customer,
The Works Cooperative of Dražice - Machine Plant, Ltd., would
like to thank you for your decision to use a product of our
brand. With this guide, we will introduce you to the use,
construction, maintenance and other information on electrical
water heaters.
The manufacturer reserves the right for engineering modification of the product. The product is designed
for permanent contact with drinkable water.
It is recommended to use the product in indoor environment with air temperatures from +2°C to 45°C
and a relative humidity up to 80%. 80%.
Product’s reliability and safety is proven by tests implemented by the Engineering Test Institute in Brno.
This product contains an electrostatic sensitive component (electronic thermostat).
During the mounting or maintenance of this product please follow general principles
described in the EN/IEC 61340 series standard - Electrostatics and related standards.

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1TECHNICAL SPECIFICATION OF PRODUCT
1.1 FUNCTION DESCRIPTION
The heater is designed for accumulation hot water using electricity. Water is heated by an electric element
in an enamelled thermally insulated tank. The unit is controlled by means of the control unit during heating
period. Turning of the round controller to the left and to the right enables switching between one and four
modes (see Table 1 below). The internal control unit includes intelligent thermostat SMART and receiver
HDO (Bulk remote control). It differentiates high and low tariff according to the code setting (see chapter
3.5 setting the receiver HDO). Information on high and low tariff can be used in modes MANUAL and
SMART. The user can select one of four operating modes specified in the table below.
OPERATING
MODES
Brief description
1
SMART
Intelligent thermostat with reaction to the consumption of hot water
SMART HDO
SMART mode with signal memory HDO
2
MANUAL
Common thermostat
MANUAL HDO
Common thermostat blocked with signal HDO
3
PROG
Common thermostat with weekly program
4
ANTI-FREEZE
Boiler shut-down with minimum temperature monitoring 5°C
Table 1
In modes SMART, SMART HDO, MANUAL a MANUAL HDO it is possible to control with signal
HDO decoded with internal receiver. If the servicing interface is used (application for
Android or iOS) for activating receiver HDO, then modes SMART and MANUAL are replaced
with SMART HDO and MANUAL HDO.
Once the selected temperature is reached, heating interrupts automatically. Water accumulated in the tank
is then used for consumption. The tank keeps constant pressure of water from the water main. If the
combination faucet hot water valve is opened, water from the water supply conduit pressed out by cold
water pressure flows out of the heater. Hot water flows out through the top part, and inflowing water
remains in the bottom part of the heater.

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1.2 ADVICE FOR CUSTOMERS
1.2.1 HOT WATER CONSUMPTION
Consumption of hot water in households depends on the number of people, amount of
sanitary equipment, length, diameter and insulation of piping in the flat, or on individual
habits of users. The cheapest option of water heating comes at the time when the
electricity rate is reduced.
Find out in what time intervals your electricity supplier provides reduced tariff and,
depending on that information, select relevant volume and power input of the heater so that
your hot water consumption covered the needs of your household.
1.2.2 ENERGY SAVING
If you use electronic thermostat in the mode which enables manual setting of the required
temperature, set it only for the value which you need for the household operation. Thus
you will reduce electricity consumption, as well as the amount of lime sediments on the
walls of the receptacle and on the electric element's pit. Manufacturer recommended
temperature for the lowest possible heat loss is 55°C. Higher saving of electricity requires
one of the intelligent operating modes - SMART or PROG (more information on the
operating modes is in chapter „3 thermostat operation“).
1.2.3 EMERGENCY POWER CONSUMPTION
If no heated water is taken from the tank, a small amount of heat leaks. This loss is
measured for a period of 24 hours at the temperature of 65°C in the heater, and at 20°C in
its ambient area. The resulting value is expressed in units [kWh/24h] and indicates the
amount of power needed to maintain the set temperature.

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MODEL
OKHE 80-
SMART
OKHE 100-
SMART
OKHE 125-
SMART
OKHE 160-
SMART
NOMINAL CAPACITY [l]
80
100
125
152
TIME OF WARMING CONTENT OF
TEMPERATURE ∆T=50°C [hours]
2,5
3
3,8
5
ELECTRICITY CONSUMPTION FOR
WARMING CONTENTS FROM 15°C TO 65°C
[kWh]
4,8
6
8
9,5
TOTAL HEAT LOSSES [kWh/24h]
0,72
0,83
1,00
1,32
LOAD PROFILE
M
M
M
L
DAILY ELECTRICITY CONSUMPTION [kWh]
6.19
6.31
6.59
12.03
WEEKLY ELECTRICITY CONSUMPTION
Qelec,week [kWh]
27.39
27.56
27.92
56.87
WEEKLY ELECTRICITY CONSUMPTION
Qelec,week,smart [kWh]
23.38
23.66
24.23
49.76
MIXED WATER V40 [l]
138.70
165.41
231.10
242.83
Table 2

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1.3 DESIGN AND GENERAL HEATER DIMENSIONS
The heater tank is made of a steel plate and tested by 0.9 MPa overpressure. The inside of the tank is
enamelled. A flange is welded onto the bottom of the tank with a flange lid screwed to it. A sealing ring is
inserted between the flange lid and the flange. Thermowells for placing a heating element and sensors of
thermostat and safety fuse are located in the flange lid. The flange lid includes the automatically measured
anode rod. The main electrical installation is placed in the plastic box assembled directly on the flange lid.
Water temperature and other comfort functions can be set mechanically or by means of mobile device
(more in chapters below).
1.3.1 DESCRIPTION OF BASIC PARTS OF THE HEATER
Figure 1
1
heating element well
2
ceramic heating element 2200W
3
electronic thermostat with external
control and safety fuse
4
electric installation cover-SMART
5
cold water supply pipe
6
thermowell
7
hot water withdrawal pipe
8
Magnesium anode
9
enamelled steel receptacle
10
CFC free polyurethane insulation
11
heater shell

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1.3.2 HEATER DIMENSIONS
Figure 2
OKHE 80 -
SMART
OKHE 100-
SMART
OKHE 125-
SMART
OKHE 160-
SMART
A
730
875
1040
1237
B
731
876
1041
1223
C
578
724
754
1010
D
520
520
520
520
E
556
556
556
556
F
15
15
15
15
G
115
115
115
115
R
450
450
450
450
Table 3

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2OPERATION AND FITTING INSTRUCTIONS
2.1 OPERATING CONDITIONS
The tank shall only be used in accordance with the conditions specified on the power plate
and in instructions for electric wiring. Besides legally acknowledged national regulations
and standards, also conditions for connection defined in local electric and water works have
to be adhered to, as well as the installation and operation manual.
The temperature at the place of heater installation must be higher than +2°C; and the room
must not freeze. The appliance has to be mounted at a convenient place; it means that the
appliance must be easily available for potential necessary maintenance, repair or
replacement, as the case may be.
If water is strongly calcareous we recommend that any of the common decalcifying devices
was installed with the appliance, or the thermostat to be set to minimum operation
temperature of 60oC. For proper operation, drinkable water of adequate quality shall be
used. To avoid potential sediments we recommend that the device was installed together
with a water filter.
2.2 WALL MOUNTING
Prior to the mounting check the bearing capacity of the wall and the material it is made of,
considering the weight of the heater filled with water. Depending on the wall material
choose adequate fixtures.
Should you have any doubts regarding the wall bearing capacity, consult the suspension with
a building specialist.
The minimum diameter of the bolts for suspending the heater is 12 mm. When mounting
the anchor bolts follow the guide provided by the anchor bolts' manufacturer.
Mount the anchors by the dimensional drawing (Figure 2) in 450 mm spacing. Double check the torque of
the suspension bolts on the heater and suspend the heater. Using the detent support in the bottom part of
the heater make sure it runs in parallel with the wall!
Figure 3

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If the hot water heater is mounted in a tight, small space, or in an intermediate ceiling, etc.,
you have to make sure that the connecting side of the appliance (connections to water
supply, area for electric plugging) remained accessible and no heat accumulation occurs.
Free space of up to 500 mm from the bottom edge of the heater has to be available under
the heater. When mounted directly under the ceiling, the distance from the ceiling has to be
50 mm at least.
If the water heater is mounted in enclosed areas, inter-ceilings, built-in structures and
recesses, ensure sufficient access to service fittings, electrical terminal boards, anodes and
manholes. Minimum spacing from manhole is 600 mm.
2.3 PLUMBING FIXTURE
Power water connects to pipes with G ¾“ thread in the bottom part of the heater. Blue - cold
water supply, red - hot water outlet. For potential disconnection of the heater, the service
water inlets and outlets must be provided with screw coupling G 3/4“. The safety valve is
mounted on the cold water inlet identified with a blue ring.
Each hot service water pressure heater must have a safety valve with a membrane spring.
Nominal clearance of safety valves is defined by CSN 0 60830 standard. The heaters are not
equipped with a safety valve. The safety valve must be easily accessible, as close to the
heater as possible. The inlet pipes must have at least the same clearance as the safety valve.
Safety valves with fixed pressure settings from the manufacturer are used for the assembly.
Starting pressure of a safety valve must be identical with the maximum allowed heater
pressure, and at least 20% higher than the maximum pressure in the water main - see Table
4. If the water main pressure exceeds such value, a reduction valve must be added to the
system. No stop valves can be put between the heater and the safety valve. During
assembly, follow the guide provided by the safety equipment manufacturer.
It is necessary to check the safety valve each time before putting it into operation. It is
checked by manual moving of the membrane from the seat, turning the make-and-break
device button always in the direction of the arrow. After being turned, the button must click
back into a notch. Proper function of the make-and-break device results in water draining
through the safety valve outlet pipe. In common operation, such a check needs to be
implemented at least once a month, and after each heater shutdown for more than 5 days.
Water can drip from the safety valve through the drain pipe; the pipe must be freely open to
the atmosphere, placed vertically and shall be in an environment free of temperatures below
freezing. When draining the heater, use a drain valve. You must first close the water supply
to the heater.

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Required pressures - Table 4. We recommend that the hot water distribution from the heater was as short
as possible to minimise heat losses.
Figure 4
Table 4
Start-up
pressure of the
safety valve
[MPa]
Allowable
operational
overpressure
of the water
heater [MPa]
Maximum
pressure in the
cold water
pipes [MPa]
0,6
0,6
up to 0.48
Heaters must be provided with a discharge valve
mounted on the cold service water inlet to the
heater for potential disassembly or repair. When
assembling the security equipment, follow \u268
CSN 06 0830.
2.4 ELECTRIC WIRING
Do not plug the water heater in HDO socket; it would not work properly in SMART
mode. The SMART mode (SMART HDO) will only work if 24/7 connected to power
supply.
2.4.1 ELECTRIC INSTALLATION GENERAL INFORMATION
In the electric wiring casing remove the partition corresponding with the input wire diameter of 8 or 10
(Figure 5). The degree of protection of electric parts of the heater is IP 44. Power input of electric element
is 2200 W.
U - Closure
P - Safety valve with
backflow valve
M - Manometer
Z - Test valve
V - Drain valve

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Figure 5
It is necessary to observe the below requirements during the electric wiring.
Heater is connected to power supply 1 PEN AC 230V/50Hz via a fixed movable
wire/wires (depending on the connection method).
The circuit must contain a breaker disconnecting all poles of the network, and a
circuit breaker (protector).
Installations in bathrooms, lavatories and showers must comply with the ČSN 33
2000-7-701 standard.
To adjust the distance from the wall, connect the wire of the external protective
bonding!
Respect the rules of protection against electrical injuries in accordance with ČSN 33
2000-4-41.
2.4.2 ELECTRONIC THERMOSTAT CONNECTION DIAGRAM
Figure 6
Ø8
Ø10
Ø10
Ø8
ANODE
HEATING
UNIT

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The terminals of L, N, PE (230V/50Hz) supply include factory connected flexible plug with length 2,5m
connectable to the standardized plug EU. After the cover opening electrical wiring can be disconnected
using flexible plug and connect the conductors into the cross-section up to 2.5 mm2.
2.5 FIRST HEATER COMMISSIONING
Before opening the power supply, the tank must be filled with water. The process of first
heating must be executed by licensed professional who has to check it. Both the hot water
outlet pipe and safety armature parts may be hot.
During the heating process the pressurised connection water that increases its volume due
to heating must drip off the safety valve. In non-pressurised connection water drips off the
overflow combination faucet. When heating is finished, the set temperature and the actual
temperature of consumed water should be roughly equal. After connecting the heater to the
water main and electrical power system, and after checking the safety valve (following the
instructions attached to the valve), the heater can be put into operation.
Procedure of putting the heater into operation:
1. Check the water main and wiring.
2. Open the hot water valve on the combination faucet.
3. Open the cold water inlet valve to the heater.
4. As soon as the water starts running through the hot water valve, the heater is filled and the valve
can be closed.
5. In case of a leakage (flange lid), we recommend fastening the flange lid bolts.
6. Screw down the electric installation guard.
7. When hot service water heating by electric energy, switch on the power supply.
8. When commencing operation, flush the heater until the cloudiness in the water is gone.
9. Make sure to fill in properly the warranty certificate.
10. The control panel must be connected with the control unit for the correct heating function.
2.6 PUTTING OUT OF SERVICE, DISCHARGE
If the hot water heater is put out of service for a longer time, or if it is not going to be used it
has to be drained and disconnected from the electric supply network on all poles. The switch
for the supply lead or the fuse cut-outs have to be shut off.
At places with permanent risk of frost the hot water heater must be drained before the cold
season starts if the appliance remains out of service for several days and if the power supply
is disconnected. Alternatively, an antifreeze protection can be activated (refer to ANTI-
FREEZE MODE).
In case the heater is drained and connected to network 230V 50Hz, the function ANTIFREEZE
is functional. At low temperatures, heating can be connected and the heater damaged

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Drainage of service water shall be performed after closing the shut-off valve in the cold
water supply piping (through the discharge valve for safety valve combination), and with
simultaneous opening of all hot water valves of connected fittings. Hot water may outflow
during the drainage! If there is a risk of frost it has to be considered that not only the water
in the hot water heater and in the hot water piping may get frozen but also the water in the
entire cold water supply piping. It is therefore advisable to drain all fittings and piping that
carry water, up to the part where the house water meter is installed (connection of the
house to water main) which is not jeopardised by frost. When the tank is to be used again, it
has to be filled with water and one needs to make sure that the water flowing out at the hot
water valves did not contain any bubbles.
2.7 INSPECTION, MAINTENANCE & CARE FOR THE APPLIANCE
During the heating process the water that increases its volume during the heating must drip
off the safety valve outlet (in non-pressurised connection this water drips off the
combination faucet valve). In full heating (about 65oC) the volumetric water gain is approx.
3% of the tank capacity. The function of the safety valve has to be checked regularly (based
on the information contained in the attached safety valve manual). In common operation,
such a check needs to be implemented at least once a month, and after each heater
shutdown that exceeds 5 days.
Caution! In doing so, the cold water supply pipe and the connection fitting of the tank may
get heated! If the hot water heater does not work, or if hot water is not withdrawn, no
water shall drip off the safety valve. If water drips, then the pressure in the supply piping is
either too high, or the safety valve is defective. Please call a specialised plumber
immediately!
If water contains too many minerals, an expert has to come to remove the scale that forms
inside the tank, as well as free sediments. This has to be performed after one or two years of
operation. The cleaning is carried out through the hole in the flange by: draining the boiler,
dismantling the flange lid and cleaning the tank. A new sealing has to be used for re-fitting.
Since the inside of the heater has special enamel, the surface of which must not get in
contact with a scale removing agent - do not work with a lime pump. Remove the lime layer
with a timber and suck it off, or wipe it off with a clout. After that, the appliance must be
rinsed thoroughly and the heating process is checked the same as during the initial putting in
operation. Do not use any abrasive cleaning agents or dye thinners to clean the outer shell of
the heater (such as cellulose thinner, trichlor, and the like). For cleaning use a wet clout and
add a few drops of liquid cleaning agent for household applications.
3OPERATION OF THERMOSTAT
Electronic thermostat for controlling electrical water heaters of DZ Dražice allows multiple operating modes
along with providing comfort functions. The thermostat contains a display and round controller that allows
setting of the heater.

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3.1 OPERATING MODES AND THEIR SYMBOLS
Figure 7 - Round controller
3.1.1 SMART MODE
In this mode the controller passes through two phases in order to save at least 10% of
electric power, comparing to the MANUAL mode. In the first phase in one calendar week
the constant temperature of the heater 65°C is maintained, and the control
electronics monitors the user's behaviour in terms of water consumption. This
information is recorded and subsequently processed. In the second phase (which starts
the following calendar week) the controller applies the information obtained in the first
phase and prepares only such amount of water that user consumes in relevant time,
leaving a certain reserve for case of unexpected water withdrawal. In this phase water
consumption data are collected and evaluated. The obtained information is applied in
such manner to adapt continuously to user's requirements. During this mode, minimum
temperature is maintained automatically at 45°C.
Learned data are recorded in the heater internal memory. After longer electrical
network failure (several hours) the actual time of the heater is lost. The correct repeated
function of mode SMART requires its manual update (chapter 3.6.4 - time setting), or by
means of mobile application.
After switching from SMART mode to another mode, the data update on consumption is
stopper, after return to SMART mode, the regulation continues according to former
saved data (i.e. no data deleting occurs).

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3.1.2 SMART HDO MODE
The thermostat monitors the signal HDO and saves its weekly history. SMART HDO
mode operates identical to SMART with the extension; based on saved history of HDO it
assumes the high tariff periods when heating is not possible. It starts automatically
heating the boiler in advance in order to have available required amount of hot water
for the user consumption as recorded in the history of SMART mode consumptions.
During high tariff, the switching of the heating spiral is blocked.
3.1.3 MANUAL MODE
Common thermostat mode. The controller keeps the heater at constant, user defined
temperature in the range between 40 to 80°C. A standard thermostat function - keeps
the heater constantly warmed up to the set temperature.
3.1.4 MANUAL HDO MODE
When low price electricity tariff is detected, the controller keeps the heater at constant,
user defined temperature, identically to MANUAL mode. During high tariff, the control
of the heating spiral is blocked.
3.1.5 OPTIMUM IN MODE MANUAL AND MANUAL HDO
Recommended temperature for manual setting (55°C). During this temperature, the
best efficiency of smart heater is achieved.
3.1.6 PROG MODE
The mode is similar to MANUAL mode providing two temperatures are set to which the
thermostat reacts. The switching between the temperatures is provided based on the
weekly programmer program. Time differentiation of the weekly programmer is 1 hour.
The weekly programmer configuration is performed by means of the control application
Android or iOS.
If power failure occurs resulting in the loss of real time data, PROG mode cannot operate
according to the set program until the user resets the correct time. In this case the
heater temperature is regulated to higher temperature set for the mode PROG.
3.1.7 ANTI-FREEZE MODE
The mode of putting the heater out of operation (holiday programme). Makes sure that
the temperature of water in the heater does not drop below 5°C (electricity supply is
necessary). This function is functional in all mode, including active HDO and high tariff.
This sign includes green light on with active HDO receiver.

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3.2 THERMOSTAT CONTROL
The heater control is possible by means of round controller clockwise and anticlockwise or by means of the
application control on the device with Android and iOS (more info in chapter software for mobile devices).
3.2.1 LED DISPLAY
The front side of the heater includes the four digit seven segment LED display, additionally to the heater.
The display example is below.
3.3 FUNCTION DESCRIPTION
In basic mode the panel displays water temperature and uses the light of individual symbols on the round
controller to display the actual operating mode. In case of the device defect, the LED display reports the
type of detected defect. The tables below display all functions which can be controlled by means of the
control panel and set individual heater modes.

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The controller central part includes the symbols below:
Symbol
Colour
Brief description
SMART
white
SMART mode indication
MANUAL
white
MANUAL mode indication
OPTIMUM
green
ECO stop indication (MANUAL mode with set
temperature 55°C)
PROG
white
PROG mode indication
HDO 1)
green
The light is on at the time of low tariff if the mode
is on HDO
ANTI-FREEZE 1)
red
Indication of active mode ANTI-FREEZE MODE
DZ (centre)
red
Indication of active heating spiral (gradual change
of the light intensity with period approx 2 s); permanent
light in rest state
Table 5: List of symbols
1) LED ANTI-FREEZE and HDO highlight the same symbol „off“ with two different colours (red, green)
3.4 THE DISPLAY MODES ON THE DISPLAY
Display mode
Graphic form - example
Temperature display
53°C
Time setting
12:34
Display of a day in week
Mo - Sun 1-7
Error display
Errors Er01 - Er99
Display of the code for
pairing with the control
application
0000 - 9999
Table 6: The display modes on LED display

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3.5 SETTING HDO (BULK REMOTE CONTROL)
Smart heater includes HDO receiver (bulk remote control). Correct function requires setting the HDO
parameters by means of mobile application in the setting section. The setting parameters HDO are detailed
in Table 7. To find out the presetting (A, B, DP (P)) and the frequency, it is necessary to open the main
home cabinet (place with electricity meter and receiver of HDO signal), with specified code for the
consumption location, ideally in the form of the presetting (A, B, DP (P)) + frequency. For example
A1B2DP12 194Hz.
Označení typu přijímače HDO.
Kód HDO je vylepen na štítku.
Na přijímači HDO naleznete 1, 2 nebo 3 kódy v závislosti na
sjednané sazbě distribuce. Na obrázku vidíte přijímač se 3 kódy.
Vaše časy platnosti nízkého tarifu najdete na
www.eon.cz/nizkytarif.
Pro zjištění platnosti doby nízkého tarifu pro vaše kódy zde stačí
zadat první uvedený kód HDO, který naleznete na přístroji.
Pokud jste z oblasti jižní Moravy je kód HDO tvořen kombinací
písmen A, B a P s čísly např. „A1B8P1“.
Pokud jste z oblasti jižních Čech je kód HDO tvořen kombinací
tří čísel např. „127".
Receiver type indication HDO.
HDO code is defined on the label.
On receiver HDO there are 1, 2 or 3 codes depending on the
agreed distribution rate. The figure displays the receiver with 3
codes.
Low tariff validity times are on www.eon.cz/nizkytarif.
In order to find out the low tariff validity period for your codes,
enter the first specified code HDO which is defined on the
device.
If you are from south Moravia, HDO code comprises of the
combination of letters A, B and P with numbers e.g. „A1B8P1“.
If you are from south Bohemia, HDO code comprises of the
combination of three numbers e.g. „127".
Figure 8: One of the receiver HDO options