Central heating solid fuel bottom combustion boiler K-2-70

Multipurpose bottom combustion solid fuel boiler
High efficiency (82%)
Large fuel load (467 dm³). Logs length 0,5 m
Fuel is loaded from the front or top
Automatic adjustment of boiler temperature
Secondary air supply
Secondary burning chamber with refractory concrete catalyst
Ingnition and draught dampers
Removable turbulators
Heat exchanger cleaning from both boiler’s sides
Possibility to install an emergency cooling coil
Possibility to mount pellets burner
Housing inner wall steel plate thickness – 6 mm
Warranty for boilers frame 4 years

Description	Characteristic
Nominal output, kW	70
Heated area, m² *	B class premises 602…1470 C class premises 322…700
Fuel used	wood logs **
Efficiency (firing wood logs), %	82
Combustion chamber volume, dm³ (l)	467
Fuel load combustion duration, up to, h.***	4…8
Logs size, not greater than, cm	50
Water volume in the boiler, l	198
Flue diameter, mm	Ø250
Minimum chimney draught, Pa	35
Overall dimensions, HxBxL, mm	1660x985x1675
Mass (brutto), (± 10 %), kg	1066

* Energy efficiency according STR 2.01.02:2016.
** It is also possible to use wood waste, sawdust and peat briquettes.
It is not recommended to burn firewood with a moisture content greater than 25%.
*** The burning time of the fuel boiler depends on the type of fuel, humidity, outdoor temperature and other factors.

Dimensions

Emergency cooling coil place
Ignition damper
Flue and draught damper
Turbulators
Secondary air supply inlet
Soot cleaning covers
Burning chamber’s refractory bricks
Ashtray’s drawer
Fire grates
Thermometer and manometer
Draught regulator

Schemes

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.)

Central heating solid fuel bottom combustion boiler K-2-70

Kalvis, UAB

Domestic boilers

Industrial boilers

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