Boilers in closed system

Sigma Ekopell NZ

Boilers with automatic fuel feeder and burner adapted for combustion of biomass in form of pellet. They are equipped with innovative controller servicing 4 pumps and mixing valve, controller allows also connection of the GSM control modules.
Design of the boiler is based on high performance heat exchanger made of certified boiler steel. Ceramic plates are located over the automatic furnace and economizers in vertical flue gas ducts to increase combustion efficiency and to reduce pollutant emissions. Boilers meet the power-emission requirements of class 5 of the PN EN 303-5:2012.


Reinforced version NZ with installed cooling coil pipe and compete protective fixtures allowing installation in closed system. NZ version requires extra payment, according to the Boilers Equipment Price List.


*BEFA list - boilers introduced to the prestigious BEFA list should meet the highest technical and heat efficiency standards. The entry confirm the highest ecological, design and energy efficiency standards. 
Boilers from the BEFA list are co-financed in the Germany.

pik_5 klasa.jpg class 5 acc. to the standard 303-5:2012
5 lata gwarancji na szczelność wymiennika ciepła, 2 lata na pozostałe elementy i sprawne działanie kotła 5 years of warranty for heat exchanger tightness, 2 years for the remaining components and efficient operation of boiler
wymiennik ciepła wykonany z atestowanej stali kotłowej /gat. P265GH/ o grubości 5mm z hut Arcelor Mittal Poland S.A. heat exchanger made of certified boiler steel /grade P265GH/ of 5 mm thickness from steel mills of Arcelor Mittal Poland S.A.
sterownik APC ADAPTIVE CONTROL wer. 1 - obsługujący 4 pompy /c.o., c.w.u., obiegowa, podłogowa/ z wyjściem na regulator pokojwy oraz obsługą zaworu mieszającego APC ADAPTIVE CONTROL controller ver. 1 controller  - servicing 4 pumps /central heating, hot utility water, circulation, floor/ with output to room controller and servicing of mixing valve
 wysoka sprawność cieplna sięgająca 91% dzięki zwiększonemu odzyskowi ciepła ze spalin
high thermal efficiency reaching approx. 90.3-90.8% thanks to increased heat recovery from flue gases
układ samoczynnego zapłonu paliwa fuel self-ignition system
katalizatory ceramiczne stabilizujące proces spalania; ceramic catalysts stabilising combustion process;
(*) - extra payable equipment, installed on Customer’s request
Specification / boiler type Unit 12 16 20
Power range kW 3,6-12 4,8-16 6,0-20
Area of heated
m2 1,7 2,1 2,5
Capacity of fuel container* m2 to 180 to 250 to 270
Pojemność zbiornika paliwa** kg ~160
Optimum thermal efficiency % ~90,3-90,8
Max. permissible operation
bar 2,5
Required flue gas draught Pa 22 24 28
Water supply temperature
°C 65/85
Boiler weight ****
kg 325 374 459
Boiler water tank capacity l 92 110 120
Chimney section cmxcm 14x14 14x14 15x15
Chimney section Ø mm 160 160 170
Minimum chimney height m 5 6 7,5
Width mm 1300 1300 1300
Depth mm 1400 1400 1400
Height *** mm 1350 1350 1350
Diameter of supply and return Dn mm G1 ½”
Flue size mm 159
Supply V/Hz ~230/50
Maximum power consumption W 76/376
Height to bottom edge
of flue
mm 740 900 1050


* Maximum area of heated rooms estimated for unit heat demand q=70 W/m2.

** Height of boiler can be additionally adjusted by means of provided levelling legs. Legs regulation varies from 38 to 50 mm.

*** Fuel tank capacity for charging density 0.6 kg/dm3

**** Boiler weight depends on the equipment.

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