Boilers in closed system
AGRO NZ type boilers are equipped with two combustion chambers - bottom with retort furnace intended for combustion of eco pea coal and upper, full-scale, created by the fixed water-cooled grate, where coal from thicker assortments and wood can be combusted. Heat exchanger is made of certified boiler sheet of thickness 6 or 8 mm /depending of boiler power/. It is adapted for installation of STRAŻAK (FIRE-FIGHTER) extinguishing system, protecting against flash-back to the fuel feeder.
NZ version with reinforced structure 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.
|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 6-8 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 90% thanks to increased heat recovery from flue gases|
|bottom furnace chamber with highly effective retort burner|
two furnace chamber: bottom with automatic burner, upper for wood combustion /for manual charging
|Specification / boiler type||Unit||15||20||25||35||50||75|
|Area of heated
||to 420||to 600||to 800|
|Capacity of fuel container***||kg||~165||~165||~165||~191||~191||~258|
|Optimum thermal efficiency||%||~86,1-89,3|
|Max. permissible operation
|Required flue gas draught||Pa||24||26||28||31||34||38|
|Water supply temperature
|Boiler weight ****
|Boiler water tank capacity||l||87||95||115||141||178||248|
|Chimney section||Ø mm||160||160||180||200||230||280|
|Minimum chimney height||m||6,5||7||8||9||9||11|
|Depth /flue horizontally/||mm||1027||1027||1027||1098||1309||1448|
|Height / Flue
|Diameter of supply and return Dn||mm||G1 ½”|
|Maximum power consumption||W||123||123||123||140||140||195|
|Height to bottom edge
of flue /flue horizontally/
|Dimensions of substitute combustion
chamber and charging hole
||308 x 238
||358 x 238
||358 x 338
||408 x 338
||404 x 334
||504 x 334
* Maximum area of heated rooms estimated for unit heat demand q=75 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 0.8 kg/dm3
**** Boiler weight depends on the equipment.
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