FI-R – Heating plant operating on sawdust

FI-R – Heating plant operating on sawdust

General issues

- - made up of feeding bin, drying – combustion chamber operating together with mixed FI boiler (for further details, see the leaflet of the mixed FI boiler)

- - operates on sawdust, sawdust powder, pellets, wood chips (87% efficiency); by easily removing the drying – combustion chamber and of the feeder (as they have wheels), the mixed FI boiler is designed to operate with solid fuel (wood and coal) or liquid fuel (diesel oil);

- automatic operation of the system;

- it is equipped with: fan to blow the flame into the boiler, control panel, geared engine driving the sawdust feeding conveyor worm and the mixer, mixer in the bin, protection system against fire propagation from the drying – combustion chamber towards the sawdust bin, cover and sawdust sieve for the bin, additional inspection door for easier handling for powers starting with 400000 kcal/ h (model FI-R 460);

- optionally, you can choose the complete system with single phase electric feed; moreover, optionally also, to the burnt gases exhaustion can assemble a cyclone to keep the soot from the burnt gases;

- Equipment certified according to SR – EN 303-5 Standard, CE marked, complies with 1st efficiency class (the best) and the 3rd class (the best of polluting emissions)

- the FI mixed type boiler consists of 3.6 mm thick high grade steel pipe elements, coated in 1 mm steel plate and mineral wool insulation, standard equipment of cooling coil, turn – return counter flange, thermo-manometer, fire iron and cleaning brush, control and safety thermostats, fans for wood operation and interchangeable door.



Benefits

- increased autonomy due to the large bin;

- time and money savings as the sawdust is directly burnt; it does not require a sawdust briquette-making equipment to be used in a solid fuel boiler;

- total control on the combustion process, similar to the gaseous fuel heating plants; exact adjustment of the desired temperature;

- considerable savings using cheap fuel considered waste material;

- unlike the western systems exclusively using dried sawdust, this system can be fed with sawdust stored in high humidity conditions or resulted from the processing of raw timber due to the drying – combustion chamber operating at 1200ºC;

- the bin and the combustion chamber are equipped with wheels for easy separation from the mixed FI heating plant if chosen to operate based on other fuels;

- the mixed FI boiler is equipped with a wide burning point and large loading opening allowing the use of large size logs in the case of wood operation;

- safe operation of the boiler – feeder system regardless the conditions:
  - If there is a running water network, the version including closed expansion tank, safety valve and thermal valve connected to the cooling coil may be installed;
  - the use of equipment of house water supply plant type requires the mandatory assembly of an open expansion tank and of a safety valve;

- in case of power failure, where there is a considerable temperature difference between turn and return, the structure and the material of FI mixed boiler do not allow its cracking, which often happens with cast-iron boilers;

- standard, the plant within the system is provided with the return inlet on the front right side, and the turn on the central-rear side; other configurations upon request;


FI-R – Heating plant on sawdust
A - FI-MIXT boiler length
B - total length with the stack connection and the return connection
C - FI-MIXT boiler total height br /> D - turn – return connection flange diameter
E - turn – return connection diameter
F - burnt gases exhaust connection diameter
G - combustion – drying chamber diameter
H - combustion – drying chamber height
I - bin base length
J - bin height
K - bin system length + conveyor worm + motor – reducer assembly for feeding and mixing

Specifications

MODEL FI-R 100 FI-R 120 FI-R 160 FI-R 200 FI-R 250 FI-R 350
Useful heat power 80000 kcal/h
93 kw
105000 kcal/h
122 kw
140000 kcal/h
162.8 kw
175000 kcal/h
203.5 kw
220000 kcal/h
255.9 kw
300000 kcal/h
348.9 kw
FI-MIXT model FI-MIXT 100 FI-MIXT 120 FI-MIXT 160 FI-MIXT 200 FI-MIXT 250 FI-MIXT 350
A 1290 1580 1890 2190 2490 2490
C 1530 1660 1660 1660 1660 1840
B 1570 1870 2170 2470 2770 2840
D 145 145 145 145 145 170
E 76 76 76 76 76 89
F 210 240 240 280 300 320
J 1400 1400 1400 1600 1600 1600
I 1000 1000 1000 1100 1100 1100
K 1800 1800 1800 1900 1900 1900
H 750 750 900 900 900 900
G 740 740 900 900 980 980
Conveyor worm and mixer engine power 0.75 kw 3-phase 0.75 kw 3-phase 0.75 kw 3-phase 0.75 kw 3-phase 1.1 kw 3-phase 1.1 kw 3-phase
No. of revolutions of the conveyor worm engine and mixer 700 rev/min 700 rev/min 700 rev/min 700 rev/min 700 rev/min 700 rev/min
Fan engine power 0.18 kw single phase 0.18 kw single phase 0.37 kw single phase 0.37 kw single phase 0.75 kw3-phase 0.75 kw 3-phase
Fan engine number of revolutions 2845 rev/min 2845 rev/min 2845 rev/min 2845 rev/min 2845 rev/min 2845 rev/min


MODEL FI-R 460 FI-R 580 FI-R 700 FI-R 800 FI-R 1000  
Useful heat power 400000 kcal/h
465.2 kw
500000 kcal/h
581.5 kw
600000 kcal/h
696 kw
700000 kcal/h
800.4 kw
860000 kcal/h
1000 kw
 
FI-MIXT model FI-MIXT 460 FI-MIXT 580 FI-MIXT 700 FI-MIXT 800 FI-MIXT 1000  
A 2360 2660 2300 3020 3070  
C 2460 2460 2460 2460 2460  
B 2680 3040 3040 3400 3650  
D 200 200 200 240 240  
E 114 114 114 133 133  
F 360 400 420 450 450  
J 1800 1800 1800 1800 1800  
I 1300 1300 1300 1300 1300  
K 2170 2170 2170 2170 2300  
H 950 950 950 950 950  
G 1060 1060 1200 1200 1200  
Conveyor worm and mixer engine power 1.1 kw 3-phase 1.1 kw 3-phase 1.5 kw 3-phase 1.5 kw 3-phase 1.5 kw 3-phase  
No. of revolutions of the conveyor worm engine and mixer 700 rev/min 700 rev/min 940 rev/min 940 rev/min 940 rev/min  
Fan engine power 1.1 kw 3-phase 1.1 kw 3-phase 1.1 kw 3-phase 1.1 kw 3-phase 1.1 kw 3-phase  
Fan engine number of revolutions
insuflare
2845 rev/min 2845 rev/min 2845 rev/min 2845 rev/min 2845 rev/min  

Possible connection schemes

Open system

If there is no permanent water source (even if a house water supply plant is being used), the installation option shall mandatory be an open system with open expansion tank.
The open expansion tank shall be assembled at minimum 1.5 m above the last radiator. The expansion tank is an open expansion tank according to I.S.C.I.R. standards as the solid fuel boilers do not have a prompt control of the combustion.
We recommend the use of the open expansion tank even if the system operates on the grounds of the thermo-siphoning principle.


Pressurised system

If there is a permanent source of water and the assembly of an open expansion tank is difficult/impossible, you can choose the option of a pressurized system with closed expansion tank, safety valve and mandatory with cooling system (coil protecting the boiler against overheating and safety thermal valve).



To extend the life cycle of the boiler by avoiding condensation and fore more efficient operation we recommend the assembly between the turn and the return of a thermostat-controlled recirculation pump.
For safe operation and increased autonomy, we recommend the assembly of an accumulation tank into the heating plant.
To obtain household hot water we recommend the household hot water boiler manufactured by Termofarc.
Moreover, we recommend the use of a 3 way mixing valve between the turn and return

Possible connection schemes
VEI - closed expansion tank
VED - open expansion tank
T - turn inlet
R - return inlet
SS - safety valve
ST - safety heating valve
Rt1, Rt2 - passing valves
Prc - anti-condensate recirculation pump
Pva - accumulator tank pump
Pb - ACM boiler pump
Pci - heating circuit pump
Cs1, Cs2, Cs3, Cs4 - direction valve
BACM - household hot water boiler
RI - radiator
VA - accumulation tank
Ac - hot water
Ar - cold water