Dual chamber boiler 35kW BURNiT CombiBurn

BURNiT

5 464,57 € tax incl.

CombiBurn DC-A high efficiency dual-chamber boiler is designed for heating by means of combustion of pellets using a burner integrated in the lower chamber. In the upper room you can use wood, wood briquettes or charcoal.

Made in Europe

Available on order

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CombiBurn Burnit

 

" Dual chamber boiler BURNiT CombiBurn DC-A "

 

The high-efficiency dual chamber boiler CombiBurn DC-A  is designated for central heating of premises through burning of wood-pellets by using a high-efficiency burner integrated to its lower combustion chamber. Besides wood-pellets in lower chamber can be used wood-chips or fruit nuts as an alternative fuel.

The upper boiler chamber is used for loading of wood logs, wood briquettes and coal as a backup fuel (alternatively).

Efficiency – up to 89%.

Boiler warranty : 2 years

 

Set includes :

  • Dual-chamber boiler
  • Burner
  • Fuel hopper
  • Rolling ash-and-soot container

 

 

Tested and approved according to ЕN 303-5, class 5.

 

Available size in 35kW

 

 

Product Features :

 

  • Built-in controller. Functions:
    Fully automated ignition and fuel feed;
    Fan ensures stable operation of the burner;
    Self-cleaning function, activation of 1 to 6 times every 24 hours;
    Built in discharge mechanism drives the ash and soot into a rolling container;
    Controls the operation of central heating pump / buffer tank;
    Controls the operation of  domestic hot water (DHW);
    Room thermostat;
    Manual mode option - when use wood and /or coal at upper chamber.
    Exhaust gas sensor.

  • Temperature sensor to monitor boiler temperature.

  • Temperature sensor to monitor water heater temperature

  • Two temperature sensors to monitor buffer tank temperature.

  • Dual chamber design . Burner joins the side of the boiler lower chamber. Metal grate divides upper and lower combustion chambers.

  • Two doors provide convenient access for cleaning the fume exhaust tubes and the combustion chambers.

  • Three-pass flue gas flow for improved heat exchange.

  • Built in discharge mechanism drives the ash and soot into a rolling container.

  • Eyepiece for viewing the combustion process.

  • Burner and hopper are connected laterally of boiler. Option to mount the burner and fuel bunker on either side of the boiler.

 

 

 

 

 

Safety devices :

  • Boiler-and-burner temperature monitoring by the controller;

  • Boiler STB thermostat and bimetallic thermostat set at 105°С on the auger mechanism;

  • Fuse 10А;

  • Safety heat evacuator;

  • Temperature safety valve is connected to a water tank and in case of reverse flame in auger, release the water into the medial flange, located between auger and fuel hopper and prevent fuel firing. Convenient maintenance openings are provided on auger mechanism and on medial flange;

  • In case of power interruption, all parameter settings are stored in the memory of the controller.

 

 

 

 

 

 

 

CombiBurn elements1. Dual chamber boiler CombiBurn DC-A
2. Fuel hopper
3. Leveling foot
4. Auger
5. Burner
6. Housing
7. High efficiency thermal insulation
8. Safety heat evacuator
9. Water mantle (jacket)
10. Fume exhaust tube
11. Three-pass flue gas flow
12. Back-up (wood logs, coals) fuel combustion chamber
13. Burner flange
14. Wood-pellets (wood-chips, fruit nuts) combustion chamber
15. Automatic ash-and-soot discharge system
16. Rolling ash-and-soot container
17. Controller
18. Upper inspection door
19. Loading door
20. Lower inspection door
21. Water tank connected to the auger

 

 

 

 

 

 

 

 

 

Technical characteristics :

 

CombiBurn Chart

 

 

CombiBurn DC 35 A
 Nominal heat outputkW8 ÷ 35
 Minimum ÷ maximum heat output - Wood-pelletskW8,5 ÷ 30
 Minimum ÷ maximum heat output - Wood-pelletskW7,5 ÷ 28
 Mass flow of exhaust gases, min. ÷ max. output : Wood-chipskg/s0,007 ÷ 0,017
 Mass flow of exhaust gases, min. ÷ max. output : Wood-chipskg/s0,006 ÷ 0,017
 Overall dimension / boileur, burner and hopper
Height H / Width L / Depth D
mm1600 / 1400 / 1070
 Height / Width / Depthmm1560 / 630 / 1070
 Water mantle volumeL113
 Volume of Back-Up (wood, coals) combustion chamberL96
Dual chamber boiler CombiBurn DC AVolume of lower combustion chamber (wood-pellets/chips or fruit nuts)L72
Required chimney draughtPa/mbar20/0.20
Recommended fuel : Automatic loading Wood-pellets / EN 14961-2:2011
Recommended fuel : Automatic loading - alternatively Wood-chips /EN 14961-1 P16A/ and fruit pits, broken nuts
Recommended fuel : Automatic loading - alternatively Wood - humidity 20%; wood briquettes, wood + coals
Max. length of firewood logsmm500
Operating temperature range°C65 ÷ 85
Exhaust gas temperature (operation mode)°C150÷180
Max. operating pressurebar3
Cold water inletA, mmG1¼" / 460
Hot water outletB, mmG1¼" / 1510
Safety heat evacuator inlet/ outletK, mmR½" / 1400
FlueF, ø / mmø 180 / 1260
FlueJ, mm315
Flue cleaning / inspection / openingO, mm200x90
Loading doorN, mm200x390
Upper inspection doorP, mm15x390
Lower inspection doorR, mm300x390
Rolling ash and soot containerV, mm220x500x200
Transportinf auger motor / discharge systemT, mm135
DrainY, mmR½" / 290
Burner flangeZOui
ControllerUOui
BurnerHeat outputkW30
Average power consumption : Firing-Up modeW~1600
Operate mode / Self-cleaning modeW~60 ÷ 70 / ~1300
Electric power supplyV/Hz220 AC / 50
HopperHeight / Width / Depthmm1105 / 625 / 810
Capacity of fuel hopperL265
Capacity of water tankS, L10
Weight / boiler, fuel hopper, burnerkg265

 

 

For product measurements, they should be read as follows:

Cold water inletA, mmR1¼ "/ 450
Y, mmmG½ "/ 232

A is shown in the previous diagram. "R1¼" and "G½" are the measure in inches of the opening. "R" is male and "G" is female. The measurements in inches indicate the distance between the floor and the opening.

 

 

 

 

 

 

Recommended clearances between boiler and walls

 

CombiBurn

 

 

 

 

 

 

 

Boiler size and chimney parameters

 

CombiBurn

 

 

 

 

 

Connecting the safety heat exchanger

CombiBurn1. Water supply network (pressure 6-10 bar)
2. Drainage (sewerage)
3. Boiler DC-A v2
4. Safety heat exchanger inlet
5. BVTS valve sensor
6. Safety heat exchanger outlet

 

 

 

 

 

 

 

 

Wiring diagram for connection of peripherals and controller terminals

CombiBurnInputs
Designation Group 1
I02 Room Thermostat
I03 Boiler temp
I04 STB KSD
I05 DHW Sensor
I06 Smoke gases temperature
I08 Buffer top sensor
I17 Buffer bottom sensor


Outputs
Designation Group 2
002 Main Fan
003 Heater
004 Cleaning Fan
005 Screw burner
007 CH pump
008 DHW pump
011 Clean ash
018 Heater Fan
019 Rotary actuators

 

 

 

 

Wiring diagram for connection of the components of the burner to the controller and to the connecting socket

 

CombiBurnInputs
Designation Group 1
I02 Room Thermostat
I03 Boiler temp
I04 STB KSD
I05 DHW Sensor
I06 Smoke gases temperature
I08 Buffer top sensor
I17 Buffer bottom sensor

Outputs
Designation Group 2
002 Main Fan
003 Heater
004 Cleaning Fan
005 Screw burner
007 CH pump
008 DHW pump
011 Clean ash
018 Heater Fan
019 Rotary actuators

 

 

 

 

 

 

Connection of Dual chamber boiler CombiBurn DC-A v2 to three-way valve

CombiBurn

 

 

 

 

 

 

 

Connection of Dual chamber boiler CombiBurn DC-A v2 to P type buffer tank and three-way valve

CombiBurn

 

 

 

Connection of Dual chamber boiler CombiBurn DC-A v2 to combi tank KSC2, flat plate solar collector PK and three-way valve

CombiBurn

 

 

 

 

Connection of Dual chamber boiler CombiBurn DC-A v2 to to solar tank SON, buffer thank P, flat plate solar collector PK and three-way valve

CombiBurn

 

 

 

 

Data sheets and documentation