Opop H4-D Series User manual

OPOP spol. s.r.o., Zašovská 750, 757 01 Valašské Meziříčí I www.opop.cz I [email protected] I [phone]
H4EKO-D
USER MANUAL

H4EKO-D User manual
2
CONTENT
1. INTRODUCTION ............................................................................................................................................................ 3
2. BOILER CHARACTERISTIC.............................................................................................................................................. 3
3. TECHNICAL DESCRIBTION............................................................................................................................................. 3
4. TECHNICAL PARAMETERS ............................................................................................................................................4
5. LIST OF SPARE PARTS ...................................................................................................................................................7
7. BOILER ASSEMBLY ........................................................................................................................................................9
8. CONNECTION OF THE COOLING LOOP.......................................................................................................................10
9. ELECTRIC HEATER INSTALLATION .............................................................................................................................. 10
10. ELECTRIC SCHEME..................................................................................................................................................... 11
11. HYDRAULIC SCHEME ................................................................................................................................................12
12. CONTROL UNIT ......................................................................................................................................................... 14
13. BASIC DUNCTION OF THE CONTROL UNIT...............................................................................................................15
14. FITTERS MENU ..........................................................................................................................................................17
14. BASIC SETUP OF THE CONTROL UNIT ......................................................................................................................18
15. IGNITING ...................................................................................................................................................................19
16. WORK........................................................................................................................................................................ 19
17. FUEL LOADING..........................................................................................................................................................19
18. EXTINCTION ..............................................................................................................................................................20
19. MAINTENANCE .........................................................................................................................................................20
20. SAFETY INSTRUCTIONS.............................................................................................................................................21
21. MEASURES IN CASE OF FAILURE ..............................................................................................................................23
22. ENERGY EFFICIENCY..................................................................................................................................................25
23. IDENTIFICATION MARKS ..........................................................................................................................................26
24. REGULATIONS AND STANDARDS .............................................................................................................................29
25. WASTE DISPOSAL .....................................................................................................................................................29
26. WARRANTY CONDITIONS.........................................................................................................................................29
27. WARRANTY CARD.....................................................................................................................................................31
28. DECLARATION OF CONFORMITY..............................................................................................................................32

H4EKO-D User manual
3
1. INTRODUCTION
Dear customer,
We greatly appreciate the fact that you have chosen the product from our product range and have become one of our customers.
We wish you real pleasure with our product. We hope our product will serve you for a long time. All employees of our company
contribute to this. Please read the operating instructions thoroughly and, if necessary, do not hesitate to ask us, we will be happy
to advise you on the operation of the boiler.
2. BOILER CHARACTERISTIC
The H4xx EKO-D steel hot-water boiler of the H4xx EKO-D series is designed for floor and central heating of family houses or
suitable production plants with a maximum hydrostatic water height of 20 m. The H4xx EKO-D boiler is designed for combustion
of solid fuels, ie piece wood. Use of other substances or materials is not permitted. The boiler must be connected to the chimney
corresponding to the boiler output and with the required minimum draft according to the user manual.
For proper boiler operation, in addition to expert installation, care must be taken to ensure that the boiler is properly serviced
and regularly cleaned, as described below in this manual. This boiler has been certified by the Engineering Test Institute in Brno
according to ČSN EN 303-5 and meets the strictest criteria for solid fuel combustion as it is classified in the highest emission class
and also meets the Ecodesign standard.
3. TECHNICAL DESCRIBTION
H4xx EKO-D boilers are gasification boilers designed for combustion of wood. In the filling chamber of the boiler is a refractory
nozzle that transmits the flame to the back of the boiler, to the heat exchanger, and then to the chimney. Exhaust fan is located
at the outlet of the boiler flue, ensuring ideal combustion under almost all conditions. This is controlled by a boiler control unit
located in its front section.
The combustion air supply is provided by the primary flaps (on the left and right sides of the boiler) and the secondary flap (front
of the boiler). Primary flaps ensure the correct boiler output, while the secondary flap regulates the residual oxygen content in
the boiler to optimize combustion with the lowest carbon dioxide and nitric oxide emissions.
On the top of the boiler you will find a filling and a cleaning door. Make sure that they are tightly closed during boiler operation.
When combustion of wood in gasification boilers generates a large amount of smoke, which accumulates in the filling chamber
under the filling door during the combustion process and gradually leaves through the nozzle into the heat exchanger. Do not
open any of the doors during the burning process until there is only a small burning layer of remaining wood in the boiler, to which
you can then re-fill the new fuel. More about heating in chapters "Ignition", "Operation", "Fuel loading", "Extinction".
On the side of the boiler you will find a pull rod that controls the exhaust flap to ensure that the smoke is drawn from the filling
chamber so that no smoke escapes into the room when the door is opened. Do not open the door during the burning process, it
is better to wait until the wood is burned on the residual hot layer that does not smoke. Then simply open the door and add new
fuel. For more information, see "Fuel loading".
The side walls of the filling chamber are fitted with cover plates to protect the boiler walls from harmful substances that arise
during combustion. These cover sheets are removable, but they must always be placed in the boiler during the burning.
Under the refractory nozzle is a combustion chamber. This is where the flame from the filling chamber goes down where the
entire combustion process is completed. The combustion chamber is lined with fireclay bricks that capture residual amount of
dust particles that would otherwise end up in the air. You can access the combustion chamber by opening the lower door. This
way, you will also sweep the remaining ash out of the boiler.
All doors must be closed during boiler operation. If you leave any of the doors unsealed, flue gas leaks into the room,
which can cause damage to person or property. Always make sure before the heating season that the door is properly
closed and that it seals properly.
Behind the combustion chamber there is a plate exchanger of the boiler, fitted with turbulators to reduce the chimney
temperature and the amount of dust particles in the air. The boiler is very simple in its construction, but still meets the strictest
emission standards.

H4EKO-D User manual
4
4. TECHNICAL PARAMETERS
Technical parameters
Boiler size
Boiler size
Boiler size
Name of the data
Unit
H416 EKO-D
H420 EKO-D
H425 EKO-D
Rated heat output
[kW]
16
20
25
Efficiency
[%]
90
90
90,2
Required chimney draft
Pa
12
Weight
[kg]
265
Ekodesign
yes
yes
yes
Boiler class according to EN 303-5
5
5
5
Volume of water
[ l ]
33
33
54
Chimney outlet diameter
[mm]
130
130
130
Fuel consumption
[kg/hod]
4,1
5,1
6
Heating water temperature range
[°C]
65 - 85
65 - 85
65 - 85
Fuel shaft volume
[ l ]
42
62
82
Dimensions of filling space
[cm]
35 x 22
35 x 32
35 x 42
Length of logs
[cm]
33
33
40
Combustion duration at max output
[hod]
>4
>4
>4
The flue gas temperature at Nom. heat. output
[°C]
137
130
130
Maximum pressure of heating water
[MPa]
0,2
0,2
0,2
Testing pressure of heating water
[MPa]
0,4
0,4
0,4
Warranty fuel
hardwood, logs
hardwood, logs
hardwood, logs
Water content in fuel
[%]
H2O max. 20%
H2O max. 20%
H2O max. 20%
Mass flow of flue gas
[kg/s]
0,01
0,0147
0,0147
CO at 10% O2
[mg/m3]
136
-
92
Dust at 10% O2
[mg/m3]
52
-
31
Electrical IP
IP
20
20
20
Electrical power
[W]
11
22
22
Recommended buffer tank size *[1]
[l]
1000
1000
1000
Voltage supply
[V/A]
230/2
230/2
230/2
*[1] The actual size of the buffer tank must be calculated by the designer.
Fuel consumption is directly dependent on the quality and type of fuel used, as well as maintaining the cleanliness of the
internal heat exchange surfaces of the boiler. The smaller the chopped wood is used, the greater the boiler output is
reached, but the burning time per one loading is shortened. On the contrary, if we need less power, we can use thicker
wood to extend burning time on one loading. The position of the primary and secondary air flaps and the speed of the
fan also affect the burning time.

H4EKO-D User manual
5
Dimensions of the boiler:
H416 EKO-D
H420 EKO-D
H425 EKO-D
Variant A: Outlet / Inlet sleeve (male thread)
G1 1/4"
G1 1/4"
G1 1/4"
Variant B: flange, new boiler for old
Cooling loop connection (internal thread)
G 1/2"
G 1/2"
G 1/2"
Connection for draining and filling (internal thread)
G 1/2"
G 1/2"
G 1/2"
Connection for mounting the power control (internal thread)
G 3/4"
G 3/4"
G 3/4"
A - total boiler height
[mm]
964
964
964
B –total depth of the boiler
[mm]
1085
1085
1085
C –boiler width
[mm]
498
598
698
D –location of smoke flue
[mm]
635
635
635
E –the location of the water inlet
[mm]
109
109
109
F –the location of the water outlet
[mm]
791
791
791
H –placing a cooling loop
[mm]
238
238
238
I –location of the heater
[mm]
173
173
173
J –location of the drain valve
[mm]
77
77
77
Wall thickness of boiler body (water / flame)
[mm]
5
5
5
Wall thickness of the boiler body (water)
[mm]
3
3
3
Description of boiler parts:
Position
Part name
1
Main switch
2
Ashtray door
3
Door fitting
4
Cleaning Door
5
Exhaust fan
6
Control unit
7
Connection board
8
Secondary air regulation
9
Primary air regulation
10
Chimney flap control
11
Cleaning hole
12
Cooling loop
13
Electric heater inlet
14
Fireclay nozzle
15
Turbulator
16
Cleaning flap
17
Smoke flap
18
Filling shaft spacers
19
Filling shaft
20
Combustion chamber

H4EKO-D User manual
6
Front of the boiler:
Control unit
Secondary air flap
Combustion chambre door
Left side of the boiler:
Primary air flap
Filling chamber flap
Cleaning closure
Back side of the boiler:
CH sensor sink
Safety sensor sink
Heated water outlet
Chimney outlet
Flue gas temperature sensor
Exhaust fan
Cooling loop inlet and outlet (interchangeable)
Cooling loop sensor sink
Cold water inlet
Filling valve inlet
Right side of the boiler:
Primary air flap
Cleaning closure
Sink for electric heater at bottom of boiler
Top side of the boiler:
Filling door
Cleaning door cover
Cleaning door
Protection plate under the cleaning door

H4EKO-D User manual
7
5. LIST OF SPARE PARTS
The complete disintegration of all H4xx-D series boilers can be found below. Use this list to identify the parts of the boiler when
ordering or replacing them.

H4EKO-D User manual
8
Item no.
Part no.
Part name
Amount
1
573369
Boiler weldment H416 EKO D
1
2
7001728
Right side cover assembly
1
3
7001729
Left side cover assembly
1
4
7001731
Cleaning doors assembly
1
5
7001734
Ash doors assembly
1
6
7001735
Filling chambre flap
1
7
7001770
Turbulator set
1
8
7001793
Heat exchanger insulation assembly
1
9
7001875
Front cover assembly
1
10
7001876
Assembly of the filling door
1
11
7001889
Electronics Box H4EKO D
1
12
214366
Peg
1
13
295616
Peg H4 Eko
1
14
295864
Spacer
9
15
3632502
Caps for cleaning holes
2
16
3632503
Cover
1
17
3632561
Spacer
6
18
3632562
Hinge belt II
2
19
3632629
Spacer 6,4
9
20
3651040
Upper clip
4
21
3653726
Back cover
1
22
3653813
Hinge of the ashtray door
1
23
3653829
Filling shaft cover I
2
24
3653830
Filling shaft cover II
4
25
3653839
Mobile Sheet
1
27
3653840
Mobile Sheet I
1
28
3653846
Exhaust fan box
1
29
3653850
Subdividing plate with air vents
4
30
3653851
Subdividing plate with air vents
4
31
3653912
Cover plate of the cleaning door
1
32
3653933
Sheet for holding the electronics
1
33
3653945
Filling shaft cover III
2
34
3653946
Exhaust fan box II
1
35
K0154.510
Handwheel, nut (VCT.50 B-M8-C2)
1
36
K0053.10075_49
Set of closing mechanism for cleaning doors
1
37
PT-303
Cabling tape
1
38
374224
Nozzle
1
39
577715
Rear insulation
1
40
577701
Bottom insulation
2
41
577776
Bottom schamott
2
42
577731
Side schamott
4
43
577740
Heat exchanger schamott
1
44
577766
Insulation front
2
45
577771
Izobrex for filling door
2
46
577772
Isolation inside
1
47
-
Isolation of the filling door 20x10 (l = 256mm)
1
48
7001903
Movable flap assembly
1
49
7001904
Lever of the flap-S
1
50
7001905
Flap bar
1
51
7001906
Rotary handle assembly
2
52
čep
B-6x35 ISO 2340
2
53
Control unit
OPOP H4-D
1

H4EKO-D User manual
9
7. BOILER ASSEMBLY
A solid fuel boiler may only be installed by a company with a valid authorization to install it or by a person authorized by us. The
list is available at opop.cz or you can request it at the telephone number 571 675 589. The project must be prepared according to
the valid regulations.
Boiler placement
The boiler must be installed in a separate boiler room, specially designed for
heating. The boiler room must have sufficient space for installation and
maintenance of the boiler. Sufficient circulation of fresh air for combustion must
be ensured, the design of the chimney must ensure adequate draft for the type of
boiler and must be in accordance with the installation criteria set forth in this
manual and in the binding regulations. Never install the boiler in open spaces or
balconies in areas occupied by people such as kitchen, living room, bathroom,
bedroom, in areas where explosive and flammable materials are present.
Install the boiler on a concrete base made of flame retardant material or on a fireproof substrate.
A minimum of free space should be around the boiler. During installation and during operation of the boiler, a safe distance of
200 mm from the flammable masses of the degree of flammability B, C1 and C2 (according to ČSN 06 1008) must be observed.
For lightly flammable substances of degree of flammability C3, which quickly burns and burns themselves after removal of the
ignition source (eg paperboard, cardboard, bitumen and tarpaperboard, wood and fiberboard, plastics, floor coverings), the safety
distance doubles, to 400 mm.
The safe distance must also be doubled if the degree of flammability of the building material is not proven.
Installation of heating system pipes
In the rear part of the boiler is welded water inlet and outlet with diameter G1 1/4 "These pipes can also be fitted with old type
flanges if you change our old boiler to a new one and you do not want to change the pipes to connect to the boiler. Then the boiler
fits its dimensions to the heating circuit to which our older type of H4v or H4eko boiler has been connected. Please inform us or
your local retailer about the possibility of buying these flanges if you change the boiler from one of the older ones.
The heating system must be designed according to ČSN 06 0310: 2006 (Central heating, design and installation), ČSN 06 0830:
2006 (Safety devices for central heating and domestic hot water), ČSN 07 7401 (Water and steam for thermal energy devices with
working steam pressure up to 8 MPa, EN 303-5 (Central heating boilers - Part 5: Solid fuel boiler with manual or automatic fuel
supply, rated at maximum 300 kW.
The boiler must be installed in combination with the buffer tank.
Installation of the drain valve
At the bottom of the boiler, a ½ "nozzle is welded to the boiler, into which the drain valve is screwed. After filling the water into
the system, it is necessary to close the valve!
Connection to the chimney
The boiler may only be installed to the chimney according to ČSN 73 4201: 2002. The connection of the hot water boiler must only
be carried out with the approval of the chimney. The boiler must be connected to a separate chimney flue which has sufficient
draft for virtually all possible operating conditions.
The draft of the chimney is always lower at the time of increasing humidity, mist and the heated head of the chimney
on which the hot sun has been lit for a long time.

H4EKO-D User manual
10
The flue path piping must be properly mounted and sealed of the boiler must be firmly assembled and fitted to prevent accidental
or spontaneous release. We recommend that the flue pipe from the boiler to the chimney is no longer than 1m and that it rises
towards the chimney; Recommended slope of at least 5% (3°). The connection is recommended to be direct - no more than one
bend.
The boiler and the flue must comply with the fire regulations ČSN 06 1008: 1997 (Fire Safety of Thermal Installations), ČSN EN
13501-1: 2007 (Fire Classification of Building Products and Structures - Part 1: Classification according to the results of the reaction
to fire tests) and may be installed at a safe distance of 400 mm from combustible materials. The safe distance must also be
observed when the degree of flammability of a flammable substance is not proven.
8. CONNECTION OF THE COOLING LOOP
The H4xx EKO-D boiler is in accordance with the requirements of ČSN EN 303-5: 2013 and Government Decree 26/2003 Coll.
equipped with a cold water exchanger to remove excess heat, which must ensure that the maximum water temperature in the
boiler, ie 110 ° C, is not exceeded. This heat exchanger is designed as a flow-through water heater, which is controlled by a relief
drain valve at the inlet. This valve can be ordered from us at any time so that installation on the cooling loop is as simple as
possible.
Principle of function
Insert the sensor of the safety valve into the sink in the side upper part of the boiler. The sensor reads
the boiler water temperature. If the boiler water temperature increases to 95°C, the boiler
automatically opens and discharges water into the built-in heat exchanger, which removes heat and
prevents overheating of the boiler. After the boiler has cooled down, the valve automatically closes
until it stops the cold water inlet to the exchanger. This activity can be repeated several times,
depending on the amount of fuel in the hopper, respectively to the duration of reduced heat
consumption through the heating system.
•The drain relief valve must always be connected to the water inlet to the cooling loop so that
the cooling loop is not under constant water pressure.
•If the recommended cooling loop connection to the boiler is not adhered to in accordance
with the operating instructions, the cooling loop may overpressure and consequently cause
leakage.
•For proper operation of the valve, it must be ensured that the valve is connected to a
permanent cooling water source of min. 2 bar. (preferably a public water supply) at a
temperature of about 15 ° C
•Check the correct valve function at least once a year
9. ELECTRIC HEATER INSTALLATION
The boiler is equipped with a sink for the electric heater on the right side. This can be used in combination with a thermostat so
that the electric heater switches to the specified
temperature. If the temperature is reached, the electric
heater turns off. This is a secondary heating source. The
electro spiral fitting has a G6/4" internal thread diaphragm
and comes with a Regulus 3kW, 1F electro spiral with
control and HDO. For connection, use the spacer as the
electro spiral is 2 cm longer than the boiler width.
This electro spiral is already installed at the factory with a
thermostat on which the desired temperature is set. The
power cord may only be connected by a trained electrician
with a valid authorization. For detailed installation
information, refer to the operating instructions for this
electro spiral.

H4EKO-D User manual
11
10. ELECTRIC SCHEME

H4EKO-D User manual
12
11. HYDRAULIC SCHEME
CONNECTION WITH 1 HEATING CIRCUIT, MIXING VALVE, BUFFER TANK
No.
Part
Type / Component / Description
El.connect.
Order number
1.
CH pump
Primary circuit pump
CH pump
-
2.
Mixing valve 1
3- or 4-way mixing valve (plugged into the 431N module)
Valve
-
3.
Temp.sensors KTY
KTY mixing valve sensor 1
Vlave sens.
345718000020
KTY DHW sensor
DHW sens.
KTY buffer sensor
Buffer sens.
4.
DHW pump
Domestic hot water pump
DHW pump
-
5.
Radiator valves
control
Module wifi8 (for 1 objekct)
-
358120400020
Zone sensor wifi8 (for 1 zone / room), (1 module = max. 8 zones / room)
-
358120400040
Wifi8 valve head (for 1 radiator), (1 zone = max. 6 heads)
-
358120400030

H4EKO-D User manual
13
CONNECTION WITH 1 HEATING CIRCUIT, MIXING AND THERMOSTATIC VALVE, BUFFER TANK
No.
Part
Type / Component / Description
El.connect.
Order number
1.
CH pump
Primary circuit pump
CH pump
-
2.
Thermostatic valve
3 –way thermostatic valve
-
-
3.
Temp.sensors KTY
KTY mixing valve 1 sensor
Vlave 1 sens.
345718000020
KTY domestic hot water sensor
DHW sens.
KTY buffer sensors
Buffer sens.
4.
DHW pump
Domestic hot water pump
DHW pump
-
5.
Mixing valve 1
3- or 4-way mixing valve (plugged into the 431N module)
Valve
-
6.
Mixing valve pump 1
Pump
Valve pump
-
7.
Radiator valves
control
Module wifi8 (for 1 objekct)
-
358120400020
Zone sensor wifi8 (for 1 zone / room), (1 module = max. 8 zones / room)
-
358120400040
Wifi8 valve head (for 1 radiator), (1 zone = max. 6 heads)
-
358120400030

H4EKO-D User manual
14
12. CONTROL UNIT
1. House heating –indicator of heating type. It can be divided into the following types:
a. House heating - only the central heating pump (CH) is active.
b. DHW priority - the DHW pump is activated as a priority, after the set DHW temperature has been reached, the
DHW pump is deactivated and the DHW pump is activated to ensure the circulation of water in the primary
circuit.
c. Parallel - DHW and CH pumps work simultaneously. Once the set DHW temperature has been reached, the DHW
pump is deactivated and the DHW pump is still working to ensure the circulation of water in the primary circuit.
d. d. Summer Mode - Only the DHW pump is active.
2. Current date, room thermostat indication, flue gas temperature.
3. The entered and actual temperature of the central heating measured at the back of the boiler on the boiler outlet water
pipe.
4. Indication of current fan speed.
5. Boiler status
6. Indication of the operation of the CH pump
7. DHW pump operation indication
8. Indication of the operation of the auxiliary pump
9. Indication of activation of the master mixing valve
10. Indication of the opening of the mixing valve when connected and activated.
11. Navigation key for entry and navigation in the menu.
12. Exit the menu, cancel the selection.

H4EKO-D User manual
15
13. BASIC DUNCTION OF THE CONTROL UNIT
The control unit controls the water circulation pump (CH), the domestic hot water pump (DHW), the secondary circuit circulation
pump, the mixing valve, the buffer tank and the exhaust fan.
It is also possible to control two additional mixing valves using 431N modules. With this type of controller, the fan speed is
determined by measuring the boiler temperature and the flue gas temperature measured at the boiler outlet. The fan operates
continuously and its speed depends directly on the actual boiler temperature, flue gas temperature and the difference of these
parameters to the specified set temperature.
1. Main page
During the normal operation of the controller, the main page is displayed. Depending on the current operating mode, different
pages are displayed. Pressing the impulse controller moves the user to the first levelof the menu. The first four options in this
menu will appear on the display.
We will display the next options by rotating the impulse controller. To select a function, press the impulse controller. Similarly, we
proceed with changing the parameters. To make a change, you need to confirm it. This is achieved by pressing the impulse
controller at the word CONFIRM.
If the user does not make any changes to the function, presses CANCEL. To exit the menu, use the EXIT button. WARNING: Standby
does not turn off the power supply of the controller.
2. Firing up / Damping
With this function, the user can easily ignite / extinguish the fuel. After the initial loading and ignition of the fuel, select the Ignition
function, which automatically controls the fan. After the optimal parameters of the central heating and flue gas temperature have
been reached, the boiler goes into the operating mode continuously. After the boiler has switched to operating mode, the display
will show instead of the Information Ignition, information Work.
From now on, this choice switches the fan on / off. With this function, we can turn the fan on / off at any time.
3. Screen view
With this feature, the user can select one of four control panel operation views:
CH screen (displays the current operating mode of the boiler),
Build in valve (displays the main valve parameters),
Valve 1 (displays the parameters of the additional valve operation 1),
Valve 2 (displays the parameters of the additional valve operation 2).
In order for the valve parameters panels to be active, these valves must be installed and configured correctly by the
specialist.
4. Temperature settings
Here you can select the desired CH temperature from the "CH set temperature" submenu and the required “DHW set
temperature” if the DHW heating is activated in the "Working modes" menu.
4.1 CH set temperature
This option allows you to set the boiler temperature. The boiler temperature can vary from 45 °C to 85 °C. The entered CH
temperature can also be changed directly in the main page of the controller by rotating the impulse controller.
4.2 DHW set temperature
This option allows you to set the specified domestic hot water temperature. User can change this temperature from 30 °C to 60
°C.

H4EKO-D User manual
16
5. Manual mode
For user convenience, the controller is equipped with Manual mode. In this function, each operating device (fan, CH pump, DHW
pump, additional pump, valve) is switched on and off independently of each other and each active mixing valve can be closed,
opened or stopped in the given position.
Pressing the impulse controller will start the function of the selected device. The device will be operated by pressing the impulse
button. In addition, in the Fan output option the user has the option to set any fan speed.
6. Working modes, Pump modes
In this function, one of the four operating modes of the CH and DHW pump is activated according to the needs of the user.
House heating - In this option, the controller enters the House heating mode. The CH pump will start operating above
the pump switching temperature (factory set to 38 °C). Below this temperature (minus hysteresis 2 ° C), the pump stops
working.
Boiler (DHW) priority - In this mode, the DHW pump (DHW) is first turned on and operates until the set DHW temperature
has been reached. Once it is reached, the DHW pump is switched off and the CH pump is activated. The CH pump runs all
the time until the temperature of the DHW tank drops below the set temperature by the DHW hysteresis value. Then the
CH pump switches off and the DHW pump switches on (the pumps work alternately).
In this mode, the fan operation is limited by maximal DHW tank temperature to 62 °C to prevent overheating of the
DHW tank.
Parallel pumps
In this mode, both pumps start operating simultaneously when the pump switch on temperature is reached. This
temperature can be different for each pump, depending on the setting by the user. This means that one pump can be
switched on before the other, but when the two set temperature limits are exceeded, the pumps will work
simultaneously. The CH pump is operating continuously and the DHW pump switches off after the specified DHW
temperature has been reached; on the other hand, it will be switched on when the temperature falls below the setpoint
set by the set DHW hysteresis value.
Summer mode
In this option, the CH pump is switched off and the DHW pump switches on when the DHW set temperature is reached.
It will operate continuously until the temperature drops lower by the DHW hysteresis value or if this condition is met:
(boiler temperature) + 2 ° C ≤ (DHW temperature).
In the summer mode, only the set boiler temperature is set, which is also the specified DHW temperature.
7. Time settings
Select the current time so that the functions that work with the current time work correctly.
8. Date settings
Select the current date so that the functions that work with the current date work correctly.
9. Fitters menu
All accessories that are connected to the boiler are activated and adjusted here. For a description of the Fitters menu, refer to the
next chapter of this manual.
10. Language version
Use this function to select the language version of the controller.
11. Factory settings
It is possible to return to the factory setting values. By selecting the factory setting, the boiler settings set by the user are deleted.

H4EKO-D User manual
17
14. FITTERS MENU
1. Valves settings, Build in valve
Activating and setting the mixing valve. The supply voltage of the valve is 230V. Connection to the "Valve" output of the boiler
control unit.
2. Valve settings, Valve 1, 2 - This function allows you to select settings for the operation of the additional mixing valve. In order
for the valve to work properly and in accordance with the user's requirements, it is necessary to make it by setting the relevant
parameters, its configuration (similar to the main valve). The detailed setting of the additional valves is provided in the 431N
module manual, which allows the control of these additional valves.
3. Room regulator temperature lower –If the room thermostat is activated, this item can be adjusted so the boiler setpoint
temperature should be set to reduce the boiler output, or deactivate the fan to achieve this reduced temperature.
4. GSM module - The GSM module is an additional device that works with the boiler controller to allow remote control of the
boiler's operation by means of a mobile phone. The user is alerted by the SMS message to the possible alarm of the boiler
controller and by sending the corresponding SMS is informed about the current temperature of all sensors. Once the
authorization code is entered, it is also possible to remotely change the entered temperature.
Refer to the GSM module instructions for details.
5. Internet module - Use of this operating mode is possible only after purchase and connection of the S-500 additional control
module, which is not part of the standard equipment of the controller. An Internet module is a device that allows you to
remotely control the boiler's operation over the internet or the local network. The user checks the status of all boiler installed
components on the computer or phone.
Refer to the Internet module instructions for details.
6. Room regulator - With this function, the user can select the appropriate room controller type. Selects between standard
controller (traditional open-close possition) and OPOP / TECH controller (RT10).
When the OPOP / TECH controller is connected, the user has the possibility to control and change the specified CH, DHW and
mixing valve temperatures. All boiler controller alarms are also displayed. When working with the mixing valve, the user has
a preview of the current outdoor temperature on the display panel with valve parameters.
CAUTION: No external voltage must be connected to the room controller outputs. Otherwise, the controller may be
destroyed.
oControll of CH pump - after the room controller signals the boiler, the CH pump is switched off.
oControl of the furnace - after the room controller indicates the heating temperature is reached, the CH
temperature drops to the set temperature.
7. Operation algorithm –enable or disable PID mode. In PID mode, the boiler unit modulates the fan speed. The closer the
temperature is to the set temperature, the lower the speed of the fan. If the PID mode is deactivated, the fan turns only at
fixed speed without modulation. Once the CH temperature is reached, the fan is deactivated.
8. Buffer parameters –the heating of the buffer tank is carried out using a temperature sensor inserted into the buffer tank. If
the buffer tank heating is activated, the corresponding temperature sensor must also be connected, otherwise an alarm
message will occur.
a. Set temperature –enter the desired temperature in the buffer tank measured by the temperature sensor.
b. DHW function –if the hot water tank is connected to the system and this is controlled by the DHW pump connected
to the boiler unit, you can choose whether to use this DHW heating in the case of a heated buffer tank. Depending
on the hydraulic connection, we recommend consulting with the installer.
9. Pumps switch on temperature - Tato volba slouží pro nastavení teploty zapnutí čerpadla ÚT (je to teplota měřená na výstupu
vody z kotle) a čerpadla TUV Nad touto teplotou začíná čerpadlo pracovat. Vypnutí čerpadla nastane po poklesu teploty kotle
pod teplotu zapnutí (mínus hystereze 2°C).
10. DHW hysteresis - This option is used to set the hysteresis of the specified boiler temperature. It is the maximum difference
between the specified temperature (ie the selected boiler temperature at which the pump will shut down) and the
temperature at which it will start working again.

H4EKO-D User manual
18
Example:
The set temperature is 55 °C and the hysteresis is 5 °C.
After reaching the set temperature of 55 °C, the DHW pump switches off and the CH pump is switched on.
When the temperature drops to 50 °C, the DHW pump switches on again.
11. Additional pump - The user has the option of connecting an auxiliary pump: circulator or valve pump. Depending on the pump
selection, the settings need to be configured correctly.
The user here sets the daily cycle and pump breaks for 30 minutes. To facilitate setting of these parameters, there is a
possibility to copy the selected time interval to other days. Once the operating plan has been established, it is necessary to
set the working time and pump shutdown time during the activity in the previously selected time interval. If necessary, it is
also possible to quickly erase the current settings, thus making it easier to set new time intervals.
12. Encoder sensitivity - With this setting, we can determine the sensitivity of the pulse converter button, (where 1 means the
highest sensitivity).
13. External sensor calibration - Correction of the outdoor sensor is performed during installation or after a longer operating
time of the controller if the displayed temperature differs from the actual temperature. Control range: -10 to +10 ° C.
14. Boiler (DHW) desinfection - Thermal disinfection involves raising the temperature to the required disinfection temperature,
ie at least 60 °C throughout the DHW circulation. The purpose of DHW disinfection is the destruction of Legionella
pneumophila, which causes a weakening of the immunity of the organism.
After switching on this function (only in boiler priority mode), the boiler will heat until the disinfection temperature specified
by the user has been reached. The disinfection time parameter specifies the duration of the disinfection (eg: 10 minutes).
After that, the boiler returns to normal working mode. Once the disinfection is switched on, the disinfection temperature
must be reached until the disinfection time is reached. Otherwise, the function is automatically deactivated.
15. Factory settings –Reset of installation menu settings to factory settings.
16. PID sustain –if the set temperature is reached, the boiler goes into the so-called sustain mode. In this mode, the fan is
deactivated in order to prevent power increase. Caution: The boiler must be installed with a buffer tank so as not to overheat
the water in the heating system and the boiler.
17. Display contrast –change the font saturation on the display of the boiler control unit.
14. BASIC SETUP OF THE CONTROL UNIT
When commissioning the boiler, it is necessary to select the correct boiler output. The power is set by the technician who is
installing the boiler in the control Unit’s Service Menu. Ensure that the boiler output is set correctly so that the fan speed matches
your boiler output.
The maximum boiler temperature can be set by pressing the navigation key and selecting the "CH temperature". This temperature
will be maintained by the boiler and the ventilator will be deactivated after the CH temperature is reached.
Boiler performance affects external factors such as chimney draft, primary and secondary flaps, fan speed, fuel type,
correct or incorrect power output calculated by the designer. Therefore, it is possible to exceed the set temperature of
the CH. For this reason, it is necessary to install it with a buffer tank.
The maximum DHW temperature, if DHW heating is activated, can be set by pressing the navigation key in the item "DHW
temperature". You activate the DHW heating in the "Pump operating modes" setting. If you activate DHW heating, make sure that
the DHW sensor is connected in advance, otherwise an alarm message will occur.

H4EKO-D User manual
19
15. IGNITING
The wood in the boiler burns out through the refractory nozzle. Place small pieces of wood and
chips on the nozzle so that the nozzle is permeable and the flame can pass through the nozzle. Use
a paper or a solid ignitor for ignition. In the Menu, touch "Ignition", and the fan will be activated.
The ideal fan speed for heating is in the range of 20 to 40%. Higher fan speed may cause the flame
to blow out. But these values are set from the factory in the Service menu.
It is now necessary to wait for the wood to start to burn and then close the door. The boiler will
automatically enter the "Operation" mode after reaching the chimney temperature above 45 ° C.
When this happens, boiler goes to "Operation". The boiler will now work to achieve the set CH
temperature by modulating the fan speed.
16. WORK
In operation, the boiler is controlled according to the CH temperature you set and also the flue gas temperature. If the flue gas
temperature drops below 45 °C, a refueling necessary to keep flame inside the boiler.
The fan operates until the set CH temperature is reached. Then, the fan will be deactivated. The boiler temperature may continue
to rise, depending on the chimney draft and the opening of the primary air flaps.
The correct setting of the primary and secondary air flaps is indicated by a line above the flap rod. This setting ensures the required
boiler output and ideal combustion emissions.
If you want the fuel in the boiler to withstand the flame longer, the primary air rod on the side of the boiler can be closed more.
The flaps can never be closed to 100%, as the burning fuel always requires at least a minimum air supply for proper combustion.
During combustion, there is accumulation of fumes in the filling shaft. Therefore, never open the filling door during
burning. Wait for the chimney temperature to drop below 45 °C, leaving only the hot layer that forms the smallest
amount of smoke in the filling chamber. After that, then you can put more fuel inside.
The primary air rod on the side of the boiler influences the boiler output. The figure shows the setting to
achieve the desired boiler output. By closing, you reduce the boiler output and extend the burning time. The
position of the flaps must be identical on both sides, otherwise the wood in the filling chamber will burn
unevenly.
O –open flap position Z –close flap position (still allows the air to enter the boiler)
The secondary air rod is located in the front of the boiler. It fumes the combustion air directly into the nozzle
and improves the quality of combustion of fuel and gases. The ideal position of the flap is indicated by a line
above the flap rod. During burning, there is no need to interfere with the flap position. In general, if you close
the primary flaps, you can move the secondary flap at the same rate so that the combustion quality is as
good as possible. While still in the closed position, the flap still allows air to be drawn into the nozzle.
17. FUEL LOADING
Fuel is added to the boiler when only the hot layer of wood remains in the filling chamber, all the large pieces are burned. It
happens according to the actual flue gas temperature, which is displayed at the top right of the display. The standard combustion
temperature is above 100 °C. If the flue gas temperature drops below about 50 °C, only the hot layer remains in the boiler and the
boiler is ready to load new fuel inside.
Before opening the filling door, move the suction flap to the open position and wait for 20 seconds. Opening
the flap ensures that the residual smoke is drawn directly into the chimney. After that, the door can be
opened, see if all the smoke is sucked out and then open the door slowly.
Load new logs onto the hot layer. Use gloves because the hot layer is really hot. After loading the wood, close
the door and remember to move the suction flap to the closed position.
Proper placement of wood for ignition

H4EKO-D User manual
20
Never leave the suction flap in the open position during the boiler operation. Otherwise, the fuel in
the filling shaft will burn upwards, not through the nozzle. This may cause damage to the metal parts
in the filling shaft or damage to the suction flap. Not to mention that all of your heat would have
fled to the chimney before it was given to the water.
18. EXTINCTION
The boiler is extinguished when the flue gas temperature drops below 45 °C and the user does not add more fuel. The fan stays in
the deactivated position, on the display is the Extinction sign shown.
The boiler can be extinguished at any time manually by entering "Extinction" in the menu. This will deactivate the fan, but be
careful if there is still fuel in the filling shaft, this will still burn according to the natural chimney draft. Similarly, combustion
products will still accumulate in the boiler. Therefore, even after extinguishing when opening the door, follow the instructions in
the Fuel loading section. If you open the filling door swiftly without an open suction flap, the smoke will escape into the room.
19. MAINTENANCE
The boiler must be cleaned regularly. And not only the filling shaft and combustion chamber, but also the heat exchanger. Follow
the instructions below to keep your boiler in the best possible condition.
1. Filling shaft: open the filling door and move the residual ash through the nozzle to fall down into the combustion chamber
or vacuum it out by vacuum cleaner for hot ash. Clean the side shield plates in the filling shaft with a scraper if necessary.
2. Combustion chamber: Open the bottom door and clean all the ash out of the combustion chamber. Check the correct
position of all chamotte bricks before closing to avoid bad air flow from the combustion chamber to the boiler exchanger.
3. Heat exchanger: Remove the cleaning door at the top of the boiler. Below them you will find a shielding flap, which you
also remove. Now you can clean the walls of the heat exchanger using a scraper and brush supplied with the boiler. The
residual ash falls to the bottom of the exchanger under the heat exchanger. This ash can either be vacuumed with an ash
cleaner with a longer extension so that you get under the heat exchanger, or if you do not have the ash cleaner, use
cleaning openings on both sides of the boiler to remove residual ash from the bottom of the heat exchanger, see point
4.
4. Cleaning opening: There is a small cover at the underside of the boiler (left and
right), which serves to remove ash that falls under the heat exchanger. Remove
the cover sheet first on the side casing of the boiler, then unscrew the 2 pcs of
wing nuts so that you can remove the metal plate. Using a cleaning tool, remove
the ash out onto the shovel or use a vacuum cleaner.
5. Exhaust fan: Before the season, we recommend unscrewing the exhaust fan and
removing the ash that has accumulated behind the fan in the spiral cabinet. Brush
the fan flaps carefully to check that the fan propeller is not clogged. If it is not
firmly attached, tighten the lock nut that holds the propeller on the fan shaft.
After cleaning, be sure to bring the boiler back to its original state. So close all the doors, screw the cleaning plate back
in, tighten the fan in an airtight manner, and make sure all the components (chamottes, cover plates in the filling shaft,
turbulators, cleaning flap) are in the right place.
Cleaning opening on the sides