Combined wood and pellet boilers H4EKO-D MAX KOMBI

Combined wood and pellet boilers 

Combined wood and pellet boilers H4EKO‑D MAX KOMBI

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EKO design

Combined boilers of the H4 EKO‑D MAX KOMBI series for wood and pellets allow you to variably change the type of fuel according to availability and price. You can also change the method of firing exactly according to your needs and time.

 

  • Combination of burning two types of fuel separately and independently — wood, pellets.
  • Quick transition between manual firing and automatic operation.
  • Online boiler control (from anywhere and at any time) in the basic equipment.

Fuel change according to your needs.

Allows you to change the method of loading exactly according to your needs.

Easy transition between fuels

Quick transition between manual loading and automatic operation.

Modern approach

Online control in the basic equipment, including the ability to turn the boiler on and off.

The H4EKO‑D MAX KOMBI boiler allows the burning of wood or pellets and quick transition between manual and automatic refueling.

Easy to operate

  • Quick transition between automatic pellet operation and manual loading of wood.
  • Online control in the basic equipment — an internet connection in the basic equipment allows the customer to control the boiler remotely and saves on boiler service costs. The service company can remotely check the boiler parameters and settings.
  • Outdoor sensor – allows you to set the water temperature control in the boiler heating system according to the outdoor temperature and thus save on heating costs.

Heating by pellets:

  • Automatic ignition and extinguishing – boilers are able to ignite pellets in the burner themselves and start the boiler operation, and can also let the pellets in the burner extinguish themselves.
  • They heat for up to several days without the need for additional fuel.
  • Easy maintenance and cleaning of the burner – the burners are located in the front door of the boiler, which makes it easy to access the burner grate and clean it of any dirt. The burner is also equipped with a removable grate, which makes cleaning even easier.

Heating by wood:

  • The boiler has a large loading shaft and is designed for burning logs with a length of up to 0.5 meters.
  • The loading shaft can hold a large amount of wood per load. The volume of the loading chamber is from 137 to 201 liters depending on the output. This reduces the frequency of loading.
  • Signaling of fuel burnout in the hopper — the control unit display shows a message about the fuel running out in the upper right corner. The customer thus knows without any problems when he can open the boiler and refill the fuel. In addition, when the boiler is connected to the internet, you can see the display of fuel burnout on your mobile phone.
  • The boiler is able to maintain a permanent burning layer — in this case, the customer has a choice. Either he can quickly heat the water in the accumulation tank with maximum boiler output and perfect combustion with high efficiency and maximum fuel utilization. Which will bring him, for example, one day without the need to re-ignite. The second option is to try to maintain a hot layer in the boiler for as long as possible so that the boiler does not go out.

The boiler control unit allows:

  • Control of 2 mixing valves
  • Connection of 2 room thermostats to control 2 independent heating circuits.
  • Connection of 5 pumps – CH pump, DHW pump, valve 1 pump, valve 2 pump, separately configurable pump.
  • Time control of the boiler output temperature – programmable weekly operating mode.
  • Accumulation tank heating using 2 temperature sensors
  • Online control of all boiler and heating circuit functions using the OPOP internet interface.
  • Mobile application for phones with iOS and Android operating systems enabling remote boiler management.
  • Updating the control unit firmware will use the USB interface to obtain new functions.
  • DPCH- detection of operating errors. After clicking on the operating error, you can view a detailed description of the problem and how to solve it.
  • Works with solar panels and other heat sources.

Proven design

  • The unique flat refractory concrete bottom of the combustion chamber allows you to create a large hot layer, which ensures high-quality fuel burning for long hours and without arching.
  • Reduction of tarring in the firing chamber — part of the primary combustion air is fed into the upper part of the firing chamber so as to prevent condensation of vapors in the hopper and thus reduce tarring.
  • The boiler is easy to maintain and clean thanks to easy access to the exchanger.

Economical and ecological operation

  • The boiler has a high efficiency of up to 93.1%, which ensures low heating costs.
  • It has a low consumption of electricity and pellets or wood, .
  • Low emissions (It falls into the 5th emission class, meets EKODESIGN)
  • The boiler can be modulated in the power range from 30% to 100% at pellet and from 50% to 100% at wood.

Long service life

  • The burner is made of durable stainless steel
  • It has reliable electronic components
  • 5‑year warranty on weld tightness when the boiler is installed by a trained installation company in accordance with the instructions
Technical parametres
Set H425 EKO‑D MAX KOMBIH435 EKO‑D MAX KOMBIH442 EKO‑D MAX KOMBIH450 EKO‑D MAX KOMBI
Boiler type H425 EKO‑D MAXH435 EKO‑D MAXH442 EKO‑D MAXH455 EKO‑D MAX
Burner type 30404060
Warranty fuel wooden pellets 6 – 8 mm
Nominal/​​Minimum outputkW25,7/7,335/10,542/12,650,6/14,6
Fuel consumption (at nominal/​min. output)kg/​​h5,73/1,697,8/2,439,46/2,8911,39/3,35
Efficiency%92,892,49291,9
Required operating draftmbar0,100,100,100,10
Flue gas temperature at min/​nominal heat. power°C58/8762/9566/10471/112
Electrical power input min/​nominal powerW40/5744/7847/10050/120
Electrical power input maxW529535555565
Warranty fuel/wood
Nominal outputkW25354255
Fuel consumptionkg/​​h6,038,910,812,5
Efficiency%90,589,589,190
Required operating draftmbar0,120,190,170,18
Flue gas temperature at nominal heat. power°C109,6133153140
Electrical power input nominalW29444242
Electrical power input max.W52525252
Ecodesign YESYESYESYES
Water volumel165165165181
Heating water temperature range°C65 – 8065 – 8065 – 8065 – 80
Fuel shaft volumel137170170201
Max log lengthcm53535353
Max heating water overpressureMPa0,20,20,20,2
Heating water test overpressureMPa0,40,40,40,4
Electrical protectionIP20202020
Power supplyA/​V/​Hz    
Hydraulic losses at T = 20 Kmbar5,5565,5567,9897,761
Hydraulic losses at T = 10 Kmbar22,1822,1831,2128,64
Dimensions
Set H425 EKO‑D MAX KOMBIH435 EKO‑D MAX KOMBIH442 EKO‑D MAX KOMBIH450 EKO‑D MAX KOMBI
Filling hole sizemm400x340400x450400x450400x450
A Boiler heightmm1373137313731513
B Boiler depthmm1575157515751613
C Boiler widthmm684684684684
D Flue pipe locationmm638638638638
E Inlet water nozzle locationmm116116116116
F Outlet water nozzle locationmm1199119911991199
G Boiler width incl. burnermm1050105010501050
H Cooling loop locationmm634634634783
J Drain valve locationmm111111111111
K Total boiler depth incl. hydraulic setmm16131613//
L Water inlet, storage tank (if hydraulic set is connected)mm643643//
M Water outlet, storage tank (if hydraulic set is connected)mm11141114//
N Display holder widthmm168168168168
O Height including external feedermm1877187718771877
P Total boiler width including accessoriesmm2095209520952095
Q Hopper heightmm1311131113111311
R Hopper widthmm807807807807
S Hopper depthmm807807807807
T Burner cover depthmm483483483483
Output/​input nozzle G 1 1/4″G 1 1/4″G 1 1/4″G 1 1/4″
Cooling loop connection (internal thread) G  1/2″G  1/2″G  1/2″G  1/2″
Drain and fill connection (internal thread) G  1/2″G  1/2″G  1/2″G  1/2″
Boiler weightkg513510510570
Flue pipe diametermm130130130130
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RT10 Room thermostat

Set the desired temperature in your household directly from the house or apartment — no need to do anything else.

Wireless module CS260 for RT10

Enables wireless signal transmission between the boiler and the room thermostat.