5 class PELLET BOILER K-2-16DG (16kw)

Multipurpose bottom combustion solid fuel boiler with pellets burner

  • High efficiency
  • Large fuel load
  • Fuel is loaded from the front or top
  • Automatic adjustment of boiler temperature
  • Secondary air supply
  • Secondary burning chamber with refractory concrete catalyst
  • Smoke exhaust, ignition and draught dampers
  • Fire grates shaking mechanism
  • Heat exchanger cleaning from both boiler’s sides
  • Emergency cooling coil
  • Possibility to mount electric heating element
  • Possibility to install smoke exhauster
  • Easy to modify for firing on solid fuel
  • Housing inner wall steel plate thickness – 6 mm
  • Warranty for boiler frame – 4 years

BURNER BurnPell X Mini or BurnPell EVO Mini

  • Patented fuel mixing inside of burning chamber system
  • Control panel contains mounted emergency thermostat
  • Automatic ignition, cleaning, combustion control
  • Equal electronic output correction
  • Automatic start up after power loss
  • High combustion efficiency – up to 99 %
  • Burner combustion chamber is made of heat proof stainless steel
  • Protection against to back fire inside fuel feeding system
  • Low el. power usage

BURNER’S CONTROL PANEL S.Control Touch MK2 or S.Control Standard MK2 (touch screen)

  • Real time precise operation parameters
  • User and service menu
  • Programming of weekly operation cycle 
  • Controls one heating circuit with servo drive, three-way or four-way valve, and hot water preparation
  • Controls up to 5 heating circuits with additional modules
  • Possibility to control burner via room console using thermostat
  • Possibility to control burner via internet, having connected internet module ecoNET
  • Possibility to control by lambda probe

Boiler model 

K-2-16 DG

Burner model 

BurnPell X Mini
or BurnPell EVO Mini

Control panel 

S.Control Touch MK2
or S.Control Standard MK2

Minimal power / Nominal power, kW 

4 / 16,4

Heating area while burning in automatic mode, m² *

B class premises

187 … 560

C class premises

90 … 267

Fuel used (automatic mode **)

wood pellets

Pellets size, not bigger than, mm 

Ø 6 – 8 

Fuel consumption at nominal output, kg/h 


Efficiency, % 


Combustion chamber volume, while burning logs, dm³ (l) **


Water volume in the boiler, l 


Flue channel diameter, mm 

Ø 160

Draught in a burning chamber (firing pellets), Pa 


Chimney draught (using logs), Pa 

18 … 23

Overall dimensions (bruto), not greater than, HxBxL (Lk), mm ***

1160 x 670 x 1400  (1180)

Mass (boiler + burner) / (brutto), (± 10 %), kg 

336 / 360


* Energy efficiency acc STR 2.01.02:2016

** Firing manually – logs, pieces of waste wood, briquettes.
  It is not recommend to fire logs with moisture contain exceeding 25 %.

*** Overall dimensions of the boiler with mounted burner, without bunker and auger pellets conveyor.


1. Burner door with burner opening
2. Burner
3. Boiler
4. Draught control
5. Boiler’s controller
6. Turbulators
7. Secondary air input hole
8. Ash box
9. Fire grates
10. Furnace cast iron door
11. Flexible armed hose
12. Screw pellet conveyor
13. Pellet bunker
* see Table “Product description”



A part of recommended boiler connection circuit, execution of which ensures long-term boiler operation,
  prevents from condensate formation inside the boiler.
Circuit shows no auxiliary technology equipment (valves, expansion vessel etc.)

5 class certificate


Product Information Sheet
Delegated Regulation (EU) 2015/1187
Supplier name or trademark UAB “Kalvis”
Model identifier K-2-16DG
Energy Efficiency Class A+
Rated heat output 16 kW
Energy Efficiency Index 115
Seasonal space heating energy efficiency 78 %
Specific precautions See product passport


Link to the EPREL system

Making dreams come true: IT DREAMS