Boilers in closed system
Sigma is a boiler that is very convenient in use, is equipped with retort burner and is intended for combustion of eco pea coal. The highest quality of materials used for manufacturing of the burner ensure its long-term operation, while suitable design of the heat exchanger ensures optimum fuel combustion conditions, high efficiency and low pollutant emissions. Intuitive and user-friendly controller with colour touch display, with adjustable angle of inclination allows simple programming of the equipment and is responsible for control of system’s operation. Boiler meets the power-emission requirements of class 5 acc. to 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.
|class 5 acc. to the standard 303-5:2012|
|5 years of warranty for heat exchanger tightness, 2 years for the remaining components and efficient operation of boiler;|
|heat exchanger made of certified boiler steel /grade P265GH/ of 6 mm thickness from steel mills of Arcelor Mittal Poland S.A.|
|controller K1v2 with colour touch panel servicing 4 pumps /central heating, hot utility water, circulation, floor pump/. Possibility to operate mixing valves, control using GSM or INTERNET*; adjustable angle of control panel|
|high thermal efficiency reaching 88% thanks to increased heat recovery from flue gases|
*adapted for installation in closed system
|screw of fuel feeder made of one piece|
|large combustion chamber with highly effective retort burner|
(*) - extra payable equipment, installed on Customer’s request
|Specification / boiler type||Unit||16||20||24||36
|Area of heated
|m2||to 160||to 200||to 240||to 360
|Capacity of fuel container||kg||~165||~165||~165||~191||~266|
|Optimum thermal efficiency||%||~87-88,5|
|Max. permissible operation
|Required flue gas draught||Pa||24||26||28||31
|Water supply temperature
|Boiler weight ****
|Boiler water tank capacity||l||97
|Chimney section||Φ mm||160||160||170||195||225
|Minimum chimney height||m||6||7,5||7||9
|Diameter of supply and return Dn||
|Maximum power consumption||W||123||123||123||140||140|
|Height to bottom edge
* Maximum area of heated rooms estimated for unit heat demand q=80 W/m2..
** Fuel tank capacity for charging density 0.8 kg/dm3
*** Height of boiler can be additionally adjusted by means of provided levelling legs. Legs regulation varies from 38 to 50 mm.
**** Boiler weight depends on the equipment.
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