Centrala termica pe peleti si lemne FI-P

FI-P – Heating plant operation on pellets and wood

General issues

The steel boilers of frame-elements, FI-P type, with membrane wall type construction solution, with pressurized fireplace designed for the production of hot water for heating installations, are equipped with pellet-operating automatic burners and plane grills for the layered burning of the solid fuel.

From the constructive point of view, the FI-P boilers bodies are single-block, water-tube, sectional type made of “N” elements of  60 x 3.6 mm or  76 x 3.6 mm pipe that are assembled by common collectors of hot water inlet and discharge, fixed to one another using 4 mm band of black plate continuously welded.

The boiler has a chamber-type fireplace and two convective circuits of burnt gases equipped with jagged turbulence nozzles.

The FI – P boiler installation is made up of two quasi-independent subassemblies:
- Automated burner operating on pellets
- FI-MIXT boiler body
The two subassemblies are coupled through the burner flange, namely the boiler inlet flange.

Their construction enables their use in two operating alternatives:
1. automated operation, being equipped with automated burners on pellets;
2. manual feed operation using solid fuel (wood, coal, coke, sawdust briquettes, wood wastes) in the burning process

The boiler has protection against overheating (all range of powers).

Equipment certified according to the SR EN 303-5 standard, CE marking;

The boiler pertains to the best class of efficiency and emissions, designed for the heating of buildings and production of household hot water.

The standard pack includes the control panel, the pellets burner, the pellets feeding system made up of the conveyor worm and the pellets tank.



BENEFITS

- high output, up to 90%;

- the same boiler (fireplace) can be used for the automated operation on pellets and for the manual feed using any kind of solid fuel;

- ecologic and more economical operation than on liquid, electric and LPG fuel; pellets burning release the same amount of CO2 that the tree absorbed during its life. (Note that the combustion of 1 m3 of gas loads the environment with 2 kg of CO2, and the combustion of a liter of liquid fuel releases 2.8 kg of CO2);

- increased autonomy for the automated operation on pellets;

- the automation elements included in the control panel of the boiler and of the pellets burner enable the operation of the boiler without permanent monitoring being required, by the burner turn off and on (by the control thermostat) when the thermostatic temperature is reached. The safety thermostat conditions the boiler stop when it reaches the temperature of 95°C, if the adjustment thermostat did not operate;

- for the manual operation on solid fuel the protection against overheating is made up of a safety changer completely immersed into the primary heating agent chamber and heat valve that enables the cooling of the boiler using cold water from the network. This system is actuated when the temperature of 95 - 98 °C is reached by means of the thermal valve controlled by the thermostat. It should be emphasized that this system protects the boiler also in case of accidental power failure;

- It can also be assembled in a gravitational operation installation or a pump circulation installation using circulation pump;





FI-P - Heating plant operation on pellets and wood

Specifications

NAME UM FI-P 200 FI-P 250 FI-P 350 FI-P 460 FI-P 580 FI-P 700 FI-P 800
Boiler width mm 950 950 1070 1120 1120 1370 1370
Total boiler width mm 1050 1050 1300 1350 1350 1600 1600
Boiler height mm 1660 1660 1770 2430 2430 2430 2430
Total height mm 1820 1820 1820 2480 2480 2480 2480
Boiler length mm 2290 2550 2550 2570 2920 2920 3280
Total length mm 2990 3250 3250 3380 3730 3730 4180
System total width mm 2120 2120 2220 2600 2600 2850 2850
Flue connection height mm 1125 1125 1300 1800 1800 1800 1800
Flue connection diameter mm 280 300 320 360 400 420 450
Boiler weight kg 1230 1385 1618 1883 2145 2461 2742
System weight (no water) kg 1400 1555 1788 2180 2445 2757 3050
Burner weight kg 47 47 47 96 96 96 100
Maximum operating pressure bar 3 3 3 3 3 3 3
Maximum test pressure bar 4,5 4,5 4,5 4,5 4,5 4,5 4,5
Useful heat power on wood Kcal/h(kW) 175.000203,5 220.000256 300.000348,9 400.000465,2 500.000581 600.000696 700.000800,4
Useful heat power on pellets Kcal/h(kW) 160.000186,2 198.000230,5 270.000314,3 360.000419 450.000523,8 540.000628,5 650.000755
Output (wood) % 78-82 78-82 78-82 78-82 78-82 78-82 78-82
Output (pellets) % 87-92 87-92 87-92 87-92 87-92 87-92 87-92
Nominal consumption of wood with Hi= 3500 kcal/kg Kg/h 64,1 80,6 109,9 146,5 183 219 252
Nominal consumption of pellets with Hi= 4150 kcal/kg Kg/h 38,75 48 65,4 87,3 109 131 153
Thermo manometer (int.) connection ţoli ¼” ¼” ¼” ¼” ¼” ¼” ¼”
Air vent (ext.) connection ţoli ½” ½” ½” ½” ½” ½” ½”
Turn inlet mm Ø 76 Ø 76 Ø89 Ø114 Ø114 Ø114 Ø133
Return inlet mm Ø 76 Ø 76 Ø89 Ø114 Ø114 Ø114 Ø133
Flange sizes (int./ext.) mm 76/145 76/145 89/170 114/200 114/200 114/200 133/220
Cooling coil connection (ext.) ţoli ¾” ¾” ¾” 1” 1” 1¼” 1¼”
Thermal valve probe connection (int.) buc/ţoli 1 / ½” 1 / ½” 1 / ½” 1 / ½” 2 / ½” 2 / ½” 2 / ½”
Necessary flue draught mbar 0,3-0,4 0,3-0,4 0,3-0,4 0,3-0,4 0,3-0,4 0,35-0,45 0,35-0,45
Content of water in the boiler liters 281 318 353 570 654 759 856
Combustion gases temperature °C 180-250 180-250 180-250 180-250 180-250 180-250 180-250
Maximum operating temperature °C 90 90 90 90 90 90 90
Recommended operating temperature °C 70-90 70-90 70-90 70-90 70-90 70-90 70-90
Electric power consumed when lighting up W 1200 1200 1200 1800 1800 1800 2000
Electric power consumed while operating W 600 600 600 1000 1000 1000 1200
Power supply voltage / supply frequency V/Hz 220/50 220/50 220/50 220/50 220/50 220/50 220/50
Pellets tank volume liters 850 850 850 1800 1800 1800 1800

Possible connections scheme

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 membrane (closed) expansion tank and cooling system (coil protecting the boiler against overheating and safety thermal valve).

To extend the life cycle of the boiler by avoiding condensation and cheaper 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 into the heating plant circuit of an accumulation tank.
For the production of household hot water we recommend the household hot water boilers manufactured by Termofarc. Furthermore, we recommend the use of a 3 way valve between the turn and the return.

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