{"id":1418,"date":"2021-02-08T12:02:29","date_gmt":"2021-02-08T11:02:29","guid":{"rendered":"https:\/\/mawera.com\/underfeed-firing-system-180-to-850-kw-ffu\/"},"modified":"2025-05-08T15:47:48","modified_gmt":"2025-05-08T13:47:48","slug":"underfeed-combustion-180-to-850-kw-ffu","status":"publish","type":"page","link":"https:\/\/mawera.com\/en\/wood-burning-systems\/underfeed-combustion-180-to-850-kw-ffu\/","title":{"rendered":"Underfeed combustion 180 to 850 kW | FFU"},"content":{"rendered":"

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FFU<\/span>

Underfeed combustion 180 to 850 kW<\/h1>\n

The under\u00adfeed com\u00adbus\u00adtion with dou\u00adble grate is par\u00adtic\u00adu\u00adlar\u00adly suit\u00adable for burn\u00ading fuels with dust con\u00adtent, such as residues from wood pro\u00adcess\u00ading (chip\u00adboard and MDF) and sawmill residues.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

\"MAWERA-Feuerung-FFU\"<\/span><\/div><\/div><\/div>

State-of-the-art, highly robust firing technology<\/h2>\n
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Fuels: <\/strong>
\nLog\u00adging and sawmill scraps
\nSaw shav\u00adings
\nDust
\nMDF
\nChip\u00adboard
\nPlan\u00ading shav\u00adings<\/p>\n<\/div><\/div><\/div><\/div><\/div>

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Min\u00adi\u00admal life cycle costs togeth\u00ader with robust and reli\u00adable sys\u00adtem engi\u00adneer\u00ading. MAWERA places the utmost impor\u00adtance on dura\u00adbil\u00adi\u00adty and a long lifes\u00adpan for our sys\u00adtems.<\/p>\n<\/div><\/div><\/div>

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Under\u00adfeed com\u00adbus\u00adtion<\/strong><\/p>\n

The dor\u00admant ember bed ensures low pol\u00adlu\u00adtant emis\u00adsions with fluc\u00adtu\u00adat\u00ading and prob\u00adlem\u00adat\u00adic fuels, while the com\u00adplete insu\u00adla\u00adtion of the entire boil\u00ader sys\u00adtem and the elab\u00ado\u00adrate wall con\u00adstruc\u00adtion of the fir\u00ading sys\u00adtem ensure min\u00adi\u00admal heat radi\u00ada\u00adtion from the com\u00adbus\u00adtion cham\u00adber and thus a high lev\u00adel of effi\u00adcien\u00adcy of the sys\u00adtem. <\/span><\/p>\n

The grate design with dou\u00adble grate (out\u00ader and inner grate) is opti\u00admised for the fuel. The fuel is burnt out com\u00adplete\u00adly via the out\u00ader grate of the com\u00adbus\u00adtion cham\u00adber. The sec\u00adondary and pri\u00adma\u00adry air can be reg\u00adu\u00adlat\u00aded sep\u00ada\u00adrate\u00adly. The fuel can be insert\u00aded either at the rear, right or left of the com\u00adbus\u00adtion cham\u00adber. Depend\u00ading on the fuel, the sys\u00adtem can be oper\u00adat\u00aded ful\u00adly mod\u00adu\u00adlat\u00ading from 25 to 100 %.<\/p>\n<\/div><\/div><\/div>

Con\u00adsis\u00adtent qual\u00adi\u00adty<\/strong><\/p>\n

A sol\u00adid steel con\u00adstruc\u00adtion and the use of high-qual\u00adi\u00adty brick lin\u00ading mate\u00adr\u00adi\u00adal guar\u00adan\u00adtee reli\u00adable sys\u00adtem avail\u00adabil\u00adi\u00adty for many years. Thanks to fre\u00adquen\u00adcy-con\u00adtrolled screws, dri\u00adves and flue gas recir\u00adcu\u00adla\u00adtion, we guar\u00adan\u00adtee the low\u00adest pow\u00ader con\u00adsump\u00adtion in all load states of the sys\u00adtem.<\/p>\n

Select\u00ading the right wood fir\u00ading sys\u00adtem<\/strong><\/p>\n

In addi\u00adtion to the ener\u00adgy require\u00adment, the type, lumpi\u00adness, water and ash con\u00adtent of the fuel are the most impor\u00adtant fac\u00adtors for select\u00ading the right fir\u00ading sys\u00adtem. How\u00adev\u00ader, the annu\u00adal util\u00adi\u00adsa\u00adtion hours and the annu\u00adal dura\u00adtion curve are also impor\u00adtant fac\u00adtors.<\/p>\n

The MAWERA sales team will advise you on the choice of a fir\u00ading sys\u00adtem tai\u00adlored to your needs.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

Design and accessories<\/h2>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
TYPE<\/th>\nPOWER RANGE*<\/th>\n<\/tr>\n<\/thead>\n
180 RIA<\/td>\n45 to 180 kW<\/td>\n<\/tr>\n
220 RIA<\/td>\n55 to 220 kW<\/td>\n<\/tr>\n
280 RIA<\/td>\n70 to 280 kW<\/td>\n<\/tr>\n
350 RIA<\/td>\n87 to 350 kW<\/td>\n<\/tr>\n
440 RIA<\/td>\n110 to 440 kW<\/td>\n<\/tr>\n
550 RIA<\/td>\n137 to 550 kW<\/td>\n<\/tr>\n
700 RIA<\/td>\n175 to 700 kW<\/td>\n<\/tr>\n
850 RIA<\/td>\n212 to 850 kW<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

*<\/sup>depends on fuel and water con\u00adtent<\/p>\n<\/div>\n<\/div><\/div>

\"MAWERA-Feuerung-FFU\"<\/span><\/div><\/div><\/div><\/div><\/div>
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Design and performance \u2014 FFU<\/h3>\n\n\n\n\n\n\n\n\n\n\n
Mod\u00adel<\/th>\n180 RIA<\/th>\n220 RIA<\/th>\n280 RIA<\/th>\n350 RIA<\/th>\n440 RIA<\/th>\n550 RIA<\/th>\n700 RIA<\/th>\n850 RIA<\/th>\n<\/th>\n<\/tr>\n<\/thead>\n
Rat\u00aded heat\u00ading out\u00adput<\/b><\/td>\n180<\/td>\n220<\/td>\n280<\/td>\n350<\/td>\n440<\/td>\n550<\/td>\n700<\/td>\n850<\/td>\nkW<\/td>\n<\/tr>\n
Dimen\u00adsions SE<\/b><\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
Length<\/td>\n2,640<\/td>\n2,640<\/td>\n3,270<\/td>\n3,270<\/td>\n3,367<\/td>\n3,354<\/td>\n3,390<\/td>\n4,145<\/td>\nmm<\/td>\n<\/tr>\n
Width<\/td>\n\n

1,180
\nRIA\u2011B
\n<\/b>1,360*<\/p>\n<\/td>\n

1,180
\nRIA\u2011B
\n<\/b>1,360*<\/td>\n		1,280
\nRIA\u2011B
\n<\/b>1,480*<\/td>\n		1,280
\nRIA\u2011B
\n<\/b>1,480*<\/td>\n		1,380
\nRIA\u2011B
\n<\/b>1,580*<\/td>\n		1,480
\nRIA\u2011B
\n<\/b>1,680*<\/td>\n		1,600
\nRIA\u2011B
\n<\/b>1,800*<\/td>\n		\n

1,700
\nRIA\u2011B
\n<\/b>1,900*<\/p>\n<\/td>\n

mm<\/td>\n<\/tr>\n
Height<\/td>\n2,157<\/td>\n2,157<\/td>\n2,322<\/td>\n2,322<\/td>\n2,551<\/td>\n2,767<\/td>\n2,950<\/td>\n3,097<\/td>\nmm<\/td>\n<\/tr>\n
Max. oper\u00adat\u00ading pres\u00adsure<\/b><\/td>\n4<\/td>\n4<\/td>\n4<\/td>\n4<\/td>\n4<\/td>\n4<\/td>\n4<\/td>\n4<\/td>\nbar (\u00fc)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

*<\/sup>incl. cov\u00ader for mov\u00adable grate  <\/span>|  <\/span>SE = screw feed<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

FFU<\/h2>\n

Under\u00adfeed com\u00adbus\u00adtion 180 \u2014 850 kW<\/p>\n

Design and accessories<\/h2>\n<\/div>
\"MAWERA-Feuerung-FFU\"<\/span><\/div><\/div><\/div><\/div><\/div>

Take advantage of these benefits:<\/h3>\n