MG series wood pellet boilers (with burners)

Designed to heat industrial, commercial or public premises using wood pellets. Especially suitable in situations when there is a demand for the efficient and environmentally friendly heating equipment.

Benefits:

ECONOMICAL: saves money
Efficient use of fuel because the intelligent boiler control system ensures that the pellets are fed into the burner evenly and only as much as necessary to maintain the target temperature.
EASY MAINTENANCE: saves time on maintenance and service
These processes controlled automatically: heat exchanger cleaning, ash removing, ignition and extinguishing. Intelligent control system ensures monitoring of the boiler operating parameters via internet. Therefore, no additional staff is required to maintain the boiler.
ENVIRONMENTAL FRIENDLY
Low CO2 emissions. Low concentration of dust avoids investment in additional filtering system and a multicyclone.
MODERN DESIGN AND MANAGEMENT
The boiler is compact, quick to set up and easy to provide heat for a variety of applications. Fuel burning process is controlled by a programmable digital controller and a sensor system that tracks and controls the combustion process of the boiler: from the amount of oxygen in the smoke to the fuel supply to the burner; fan speed; automatically switches the system pumps on or off depending on the boiler temperature. This ensures efficiency, optimum combustion conditions, reduces fuel consumption and minimalize environmental pollution.

Control description

BOILER CONTROLLER CONTROLS:

Exhauster
Ash removal gears
Heat exchanger cleaning

CONTROLLER MONITOR AND MANAGE:

Boiler emergency overheating (with emergency thermostat)
Boiler pressure (too high or too low)
Interruption of heat transfer through the boiler
Overloads of boiler gears
Constant draught in the boiler furnace by managing the exhaust gas fan operating mode with frequency converter and differential pressure sensor

BURNER CONTROLLER CONTROLS:

Burner gears operation
Automatic performance adjustment
Recirculation pump (according to active mode)
Automatic start and stop of the burner
The amount of oxygen in the smoke
Burner flame control
Burner faults diagnostics
Adjustment of fuel supply. Modular increase / decrease of fuel supply in proportion to the thermal load

BOILER MONITORING:

Real-time and remote monitoring of burner operating parameters, as well as data and emergency message storage and ability to view stored data (with Internet access)
Burner thermal power
Water supply from boiler
Return water temperature
Outside temperature
Fuel channel temperature

Product description

Boiler model		*Kalvis-100MG*	*Kalvis-150MG*	*Kalvis-200MG*	*Kalvis-250MG*	*Kalvis-300MG*	*Kalvis-400MG*	*Kalvis-500MG*
Nominal power (Q_N) kW		100	150	200	250	300	400	500
Minimal power (Q_min) kW		30	45	60	75	90	120	150
Fuel used		wood pellets
Fuel humidity, not more than (%)		10
Fuel dimensions, not more than (mm)		6 – 8
Fuel consumption at nominal output ( kg/h)		20	37	52	65	77	114	150
Efficiency at Q_N, not less than ( %)		90
Heating premises, m2	B class	1170..3500	1755..5250	2340..7000	2925..8750	3510..10500	4680..14000	5850…17500
	C class	560..1670	840..2505	1120..3340	1400..4175	1680..5010	2240..6680	2800…8350
Burning time without refueling (at Q_N)		depends on fuel bunker
Boiler class acc to LST EN 303-5		5
Lifetime in years, not less than		10
Water volume in the boiler (l)		990	990	1200	1200	1400	1400	1600
Water pressure in the boiler, bar (MPa)	not less than	2,5 (0,25)
	not more than
Maximum permitted operating water temperature (ºC)		90
Minimum return water temperature during operation (ºC)		50
Hydraulic resistance (Δt=20ºC/Δt=10ºC) (mbar)		0,014	0,035	0,07	0,127	0,136	0,185	0,254
Ambient temperature (ºC)		3-30
Draught from the boiler (Pa)		180
Flue gas temperature at nominal output, up to (ºC)		130
Electrical voltage (V)		230 AC
Electrical power (W)		455	585	585	585	1111	1411	1466
Electrical protection degree		IP 20
Dimensions of connection flanges: (mm)	flue channel (conditional vlue) mm	Ø 200			Ø 250
	flue channel flange, mm	Ø 255			Ø 305
	drain, mm	25 (1″)
	heating system, mm	50 (2″)				65 (2½”)
Mass, not more than (±10%)	kg	2200	2300	2500	2750	3000	3550

UAB KALVIS reserves the right to make changes of parameters and sizes of equipment during product development process.

Dimensions

Boiler model			*Kalvis-100MG*	*Kalvis-150MG*	*Kalvis-200MG*	*Kalvis-250MG*	*Kalvis-300MG*	*Kalvis-400MG*	*Kalvis-500MG*
Overall dimensions,	height (H)	mm	1920	2020	2020	2180	2180	2220	2220
not more than:	width, with control panel (B)	mm	1440	1440	1440	1560	1560	1720	1720
	width, without control panel (B1)	mm	1140	1140	1140	1260	1260	1420	1420
	length without burner (L1)	mm	3000	3100	3100	3100	3100	3450	3650
	dimension in front for service (L2)	mm	1700	2000	2000	2000	2000	2300	2500

NOTE: UAB KALVIS reserves the right to make changes of parameters and sizes of equipment during product development process.

MG series wood pellet boilers (with burners)

Kalvis, UAB

Domestic boilers

Industrial boilers

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