Boilers with feeder biomass


Alfa Discontinued equipment
gwarancja_5_lat.jpg 5 years warranty for heat exchanger tightness, 2 years for the remaining components and efficient operation of boiler;
stal.jpg Heat exchanger made of certified high-grade boiler steel;
High thermal efficiency reaching 95% due to increased heat recovery from flue gases;
sterownik_APC_Center.jpg APC CENTER controller servicing six pumps /central heating, domestic hot water, circulating, floor/. Control of two mixing valves; ONLINE change and preview of parameters of main controller through installed internet module with RJ-45 socket;
NZ.jpg Reinforced design. Boiler adapted for installation in closed system if the protections are assembled in accordance with the operation and maintenance manual of the boiler;
wentylator_wyciagowy.jpg Exhaust fan eliminating problem with chimney draught and stabilising operation of the boiler;
czujnik_podcisnienia.jpg Vacuum sensor protecting against incorrect combustion process;
czujnik_rezerwy_paliwa.jpg Fuel reserve sensor in container stops boiler operation at minimum fuel level. After fuel recharging it is not necessary to repeat firing procedure and the boiler switches to automatic operation;
ceramika.jpg Ceramic catalysts stabilising combustion process;
uklad_samoczynnego_zaplonu.jpg Fuel self-ignition system;
palnik_pelletowy_centralny.jpg Central pellet burner with automatic cleaning function as a standard;
kompaktowe_wymiary.jpg Compact dimensions;
system_automatycznego_czyszczenia.jpg System automatycznego czyszczenia wymiennika ciepła i odpopielania w standardzie;
 zestaw_hydrauliczny.jpg Hydraulic set with circulating pump and thermostatic valve as boiler protection against low return temperature;

Specification / boiler type

unit 12 17 22 30


  wood pellet with diameter 6 mm

Power range

kW 3,6-12 5,1-17 6,6-22 9-30

Heating area


1,3 1,7 1,9 2,7

Area of heated rooms 1


to 150 to 215 to 275 to 375

Capacity of fuel container (STD/PLUS) 2




~116/ ~210

~147/ ~229

Optimum thermal efficiency



Energy efficiency class

- A+ A+ A+ A+

Max. permissible work pressure

bar 1,5

Required flue gas draught

mbar 0,22 0,27 0,27 0,30
Water temperature on supply max. °C 65/85

Boiler weight 3

kg 370 380 415 510

Boiler water tank capacity

l 60 60 70 90

Chimney section

cmxcm 14x14 14x14 16x16 18x18

Chimney section

Ø mm

160 160 180 200

Minimum chimney height






Width mm 1103 1123 1123 1352








mm 1340 1340 1495 1495

Supply and return socket diameter


GW 1”

Release socket diameter


GW ½”

Diameter of the exhaust gas socket

mm 127 127 127 127

1 Maximum area of heated rooms estimated for unit heat demand q=80 W/m2.

2 Fuel tank capacity for pellet bulk density 0,6 kg/dm3.

3 Boiler weight depends on its additional equipment.


Height of boiler can be additionally adjusted by means of provided levelling legs.

The regulation of legs varies from 38 to 50 mm.

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