ARCA Granola is a pellet boiler, designed for heating of residential, commercial or administrative buildings:

- outputs from  20 up to  260kW;
- nominal performance 91,7%;
- automatic ignition and pellet feeding;
- digital control panel with weekly programmable function;
- direct control from the panel of the water heater  for domestic hot water or puffer;
- ability to operate solar system (this function is intergated in the control panel);
- compact in size with a hopper, located over the boiler (for models  20 to 50kW);
- autonomy in the feeding operation of the hopper with a single load 5-7 days;
- easy weakly maintenance and cleaning (depending of the quality of the pellets);

Technical Data: 

Type	Heating output min./max    kW	Weight        kg	Water jacket capacity    l	Hopper capacity     l	Hydrolic resistance of the water jacket mbar	Combustion chamber resistance   mbar	Working pressure      bar	Test pressure     bar
GRA20AUT	10-20	230	68	190	10	0,03	3	4,5
GRA30AUT	20-30	280	68	330	10	0.03	3	4,5
GRA40AUT	30-40	370	117	390	10	0.06	3	4,5
GRA50AUT	40-50	370	117	390	10	0.06	3	4,5
GRA80AUT	70-80	400	190	600	5	0.03	3	4,5
GRA115AUT	90-110	560	276	600	10	0.05	3	4,5
GRA150AUT	120-150	670	362	600	12	0.05	3	4,5
GRA250AUT	240-260	770