Metal-Fach SEG BIO 100, Эксплуатационная и техническая документация, Страница: 12 / 54

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12. Control and safety
(USER/INSTALLER)
1) Automatic control of the boiler can adjust:

boiler temperature
 temperatury w obiegu centralnego ogrzewania C.O.1,C.O.2 ;

hot water temperature

room temperature
 temperature of return water from central heating (boiler exchanger protective feature)
 ignition time (depending on type of fuel)

fuel feeder operation time
 feeder and vent manual control time

automatic burner power modulation (fuzzy logic)

automatic air feed (lambda sensor module)
2) Temperature sensor
The STB mechanical protection is situated inside the boiler and prevent the heating system from
overheating. it is set by default at 95
o
C. if temperature exceeds 95, the vent is turned off. at the same
time central heating hot water pumps come on and the mixer valve opens.
3)
Fuzzy Logic control (advantages):

advanced algorithm
 reduces fuel consuption and lowers the amount of sooth and contamination in the boiler

enhanced boiler working temperature stability- eliminates condensation in the boiler
(sweating of the boiler)

combustion chamber temperature is high and stable which lowers carbon oxides emission.
4) Lambda sensor
The sensor continiously adjusts the amount of air in order to provide the most efficient
operation of the boiler and minimise the carbon oxide emission under the given boiler load, fuel
type and weather conditions.
5)
Fumes temperature sensor
The sensor is situated in the boiler flue. it allows to control the fumes temperature. if the
temperature exceeds 250 oC, the vent automatically shuts down until the combustion temperature
drops.
6)
Mixing valve acutator x2
With this device you can adjust the set heating circle temperature in the central heating system,
keeping the constant boiler temperature. The temperature is calculated from the heating curve in
relation to the outside temperature.
13. Fuel
(USER)
The default fuel of boilers equipped with a screw feeder or retort or BIO burner is:
1) Class C wood pellet compliant with section 5.3 (Table 7) of standard PN EN 303-5:2012:
 diameter: 6 ± 1 mm; 8 ± 1mm;

length: 3,15 ≤ L ≤ 40;

humidity ≤ 12%;
 ash content ≤ 0,5%;
 calorific value >17 MJ / kg;
The fuel should be clean and not contain rocks, pieces of wood etc.
14. Requirements for the boiler room and
boiler installation
(USER/INSTALLER)
In Poland, all the soild fuels boilers should be made in accordance with PN- 87/B-02411 Norm
„Soild fuels boilers”. The have been divided into two categories.
1)
For small boilers under 25 kW, the following requirements should be met:
 the boiler should be placed in the central position to the heated rooms and in a seperate
room.
 the floor surface should be inflammable. If the floor is flammable, it should be covered with
steel metal sheet of 0,7 mm thickness and exceed the boiler contour by at least 50 cm. the
boiler should be placed on inflammable base of 0,05 m above the floor and secured by steel
angles.
 the boiler room can be lit naturally as well as artificially.

the location of the boiler in the room should enable free access to the boiler during cleaning
and maintenance works. The distance between the back of the boiler and a wall should be
at least 70 cm, the side of the boiler and a wall should be at least 100 cm and the front of
the boiler and a wall opposite should be at least 200 cm;
 the height in a new building should be at least 220 cm. in old buildings the the boiler room
should be at least 190 cm high as long as the ventilation inside is sufficient (supply- exhaust
ventilation)
 supply ventilation should be provided by an open slot of 200 cm2 in diameter and placed
up to 100 cm over the floor surface.

the exhaust ventilation should be provided by an exhaust duct of 14 x 14 diameter and
made from noncombustible material. Its outlet should be installed under the ceiling of the
boiler room. The exhaust duct should lead out over the roof and placed in the close vicinity
of the chimney. No shut down equipment can be installed on the duct.
2) Boiler rooms of heating power greater than 25kW should meet extra requirements, such
as:

the distance to the far-most chimney, at gravitional draught, cannot exceed 50 cm of the
chimney height.