Weeklyprogrammer Serial
Two‐wayradiocontrol Optional
GSMmoduleOptional
*valuescalculatedonthebasisofact10/91forroomswiththermalrequirementof30kcal/hm3and
heightof3m.Thedatagivenaboveareapproximate;theproducercompanyreservestherighttomake
anychangeinordertoimprovetheproduct’sperformance.
TheresultsinthetablewereobtainedusingcertifiedpelletbasedonAustrianandGerman
standardsDIN51731,DINPLUSandÖNORMM7135.
YouareremindedthattheESC(EuropeanStandardisationCommittee)isintheprocessof
definingfutureEuropeantechnicalstandardsthatwillgovernboththetechnicalfeaturesofthis
fuelandtheeconomicandenvironmentalaspectsassociatedwiththeproductionline.
1.3Fuelfeatures
Themainfeatureofthisheateristhatitburnsanaturalfuel(thepellet)obtainedinan
environmentally‐friendlywayfromscrapsofthetimberindustry(woodchippings,sawdust,
etc.).
Woodchippingsandsawdustfromwoodproducts,afterhavingbeendulyre‐cleanedanddried,
arecompactedinstate‐of‐the‐artveryhigh‐pressureplants,intopureroundedwoodpieces:the
pellet.Eachroundedpiececanhavevariablelengthsandthicknesses,respectivelybetween1÷3
cminlengthand6÷8mmindiameter.Thepellet’smainfeaturesarelowmoisturecontent
(below12%),itshighdensity(=600kg/m30aswellasitsregularityandcompactnessthatgive
thistypeoffuelcharacteristicsofhighcalorificpower(I.C.P.4000÷5000kcal/kg).
Figure1.1:Woodinpelletform.
Thepellettobeusedtofeedtheheatermusthavehighqualitycharacteristicssuchas,those
definedbystandardsDIN51731andÖNORMM7135,somebasicdetailsofwhichwesetout
below.
Qualitystandardfor
woodinpelletform
Unitofmeasurement
ÖnormM7135
DIN51731
DINplus
DiameterMmfrom4to10from4to10from4to10
LengthMm5xD1<505xD1
DensityKg/dm3>1,121,0/1,4>1,12
MoistureContent%<10<12<10
Ashes%<0,50<1,50<0,50
CalorificPowerKwh/kg>54.86/5.42>5
Sulphur%<0,04<0,08<0,04
Nitrogen%<0,3<0,3<0,3
Chlorine%<0,02<0,03<0,02
Powders%weight<2,3‐ <2,3
