Characteristics Of The Fuel; Measurements - Ravelli HR EVO 290 Manuel D'installation

Rev.1 16/03/2018
ENG
Pag.56

Characteristics of the fuel

Wood pellet is a fuel made of pressed wood sawdust, often recovered from processing scraps of carpentries. The material used
cannot contain any extraneous substance such as, for example, glue, lacquer or synthetic substances.
The sawdust, once it has been dried and cleaned from impurities, is pressed using a die with holes: as a result of high pressure, the
sawdust heats up by activating the natural wood binders; this way the pellet maintains its shape even without adding artificial
substances.
Wood pellet density varies based on the type of wood and can exceed that of natural wood by 1.5 - 2 times.
The cylinders have a diameter of 6 mm and a variable length between 10 and 40 mm.
Their density is equal to approximately 650 kg/m3. Due to their low water content (< 10%) they have a high energy content.
The UNI EN ISO 17225-2:2014 standard (that replaces the EN PLUS standard) defines pellet quality by specifying three classes: A1,
A2 and B.
Maintain fuels and other flammables at a suitable distance.
Ravelli recommends using wood pellet classified A1 and A2 according to the EN ISO 17225-2:2014 standard, or certified DIN PLUS
(more restrictive than the A1 class) or ONORM M 7135.
Pellet may be light or dark coloured, it is normally bagged into bags that show the name of the producer, the main characteristics
and classification according to standards.
! IMPORTANT
The use of pellets with different characteristics than that tested by the technician during the 1st ignition implies a new calibration of
the pellet boiler parameters of the boiler, such intervention is excluded from the warranty.

Measurements

HR EVO 290
Height 1300
Width 715
Depth 810
Weight 281
HR EVO 290 technical diagram
715 715
HR EVO 290 - 350 - 390
Pellets must be transported and stored in a dry area. Upon contact with humidity they swell and
become unusable: it is therefore necessary to protect them from humidity, both during transport
and during storage.
HR EVO 350
1300
715
810
281
810 810
use and maintenance manual
HR EVO 390 Unit of
measurement
1300 mm
715 mm
810 mm
281 kg
60 (ENTRATA ARIA) 60 (ENTRATA ARIA)
1/2" F SCARICO SICUREZZA 1/2" F SCARICO SICUREZZA
1" M RITORNO IMPIANTO 1" M RITORNO IMPIANTO
SCARICO ACQUA IMPIANTO SCARICO ACQUA IMPIANTO
Mod. Mod. DESCRIZIONE
TOLLERANZE GENERALI SECONDO LA CLASSE UNI EN 22768-mK TOLLERANZE GENERALI SECONDO LA CLASSE UNI EN 22768-mK
GENERAL TOLERANCES AS PER UNI EN 22768-mK GENERAL TOLERANCES AS PER UNI EN 22768-mK
DENOMINAZIONE DENOMINAZIONE
(DENOMINATION) (DENOMINATION)
HR EVO 290 HR EVO 290
1"M MANDATA IMPIANTO
100 (USCITA FUMI)
309 309 197 197
DESCRIZIONE Data
MODIFICHE MODIFICHE
MODIFICARE SOLO SU CAD MODIFICARE SOLO SU CAD
CAD DRAWNING HANDLING ON CAD SYSTEM ONLY CAD DRAWNING HANDLING ON CAD SYSTEM ONLY
SCALA FORMATO SCALA
1:10 1:10
A3
(SCALE) (SHEET) (SCALE)
MATERIALE MATERIALE
(MATERIAL) (MATERIAL)
1"M MANDATA IMPIANTO
100 (USCITA FUMI)
Data Dis. Appr. Dis. Appr.
FORMATO
A3
(SHEET)