Boiler Defro Sigma Uni 24 kW - 2017
Sigma Uni boiler is an automatic and extremely comfortable to operate boiler with a gutter burner adapted to the combustion of eco-pea. It has the highest quality materials used in the production of the burner, which guarantee its long-term operation. Special construction of the exchanger ensures optimal fuel combustion conditions, high efficiency and low emission of pollutants. The boiler has an intuitive and user-friendly controller with a color touch display with an adjustable angle of position.
Sigma Uni meet the energy and emission requirements of class 5 of the PN EN 303-5:2012 standard.
Standarf equipment:
- ADAPTIVE CONTROL,
- controller K1Pv4,
- blower fan (installation on your own),
- burner fuel supply system,
- fuel tank,
- analog thermometer,
- ash drawer,
- Extension of the flue pipe with throttle,
- Exhaust gas turbulences,
- Cylinder cover opening sensor,
- extinguishing system “Firefighter I”,
- silicon,
- maxing valve conreoller (in K1Pv4 regulator),
- levelling feet.
Optional equipment (at extra cost):
- GSM module,
- Internet module,
- Internet module WIFI,
- Igniter,
- Room controler DK LOGIC 100,
- Room controler DEFRO SPK Lux,
- extinguishing system “Firefighter II”,
- module DEFRO MZ,
- NZ version for closed-loop system,
- SPK Lux wireless regulator,
- set for wireless RS communication.
Controller K1Pv4
Function performed by the controller:
- modern control system ADAPTIVE Control with the use of a turbine flow meter ensuring optimal selection of parameters of fan and feeder operation;
- possibility of checking the history of the last twenty alarm states of the boiler;
- option to download the temperature history to an external USB memory stick;
- option to cooperate with the exhaust fan module
- fan and screw feeder control;
- control of the mixing valve actuator as standard;
- Weekly control;
- control of central heating and hot water pumps;
- control of two additional pumps;
- possibility of connecting a room controller with RS or traditional communication;
- option to connect the DEFRO GSM module;
- option of connecting a new version of DEFRO Internet module, which enables remote change of boiler operation parameters (access to user and service menu);
- option to control two additional valves by means of DEFRO MZ modules;
- operation of the geared motor with reversible operation (not applicable to the PZ version);
- large, colour graphic display with touch panel and adjustable tilt angle;
- temperature sensor of central heating, hot water, valve, return, additional, exhaust fumes and outside temperature;
- temperature protection (thermocouple);
- screw temperature sensor (protection);
- High-quality housing.
Boiler name |
Defro Sigma UNI |
|||||
Specification/Type of boiler | S.I. | 16 | 20 | 24 | 36 | 48 |
Nominal Power | kW | 16 | 20 | 24 | 28 | 38 |
Power range | kW | 4,8-16 | 6,0-20 | 7,2-24 | 10,8-36 | 14,4-4 |
Boiler class wg PN-EN 303-5 |
- | Echaust emissions / effciency - class 5 | ||||
ECODESIGN |
- | NIE | ||||
Energy effciency class |
- | A+ | ||||
Temperature of the exhaust gases for nominal power |
[ºC] |
97-119 | ||||
Basic fuel |
- | hard coal from the peas range | ||||
Heating surface |
m2 |
2,1 | 2,3 | 2,4 | 3,8 | 4,7 |
Surface area of heated rooms |
m2 |
do 250 | do 270 | do 290 | do 400 | do 520 |
Fuel tank capacity |
kg | ∼165 | ∼165 | ∼165 | ∼191 | ∼266 |
Fuel consumption |
kg/h | 2,75 | 2,9 | 3,64 | 4,8 | 6,3 |
Flammability |
h | ~60 | ~57 | ~46 | ~40 | ~42 |
Optimal thermal effciency |
% | 88,8-88,9% | ||||
Max. permissible operating pressure |
bar | open system 1,5 /close system 2,5 | ||||
Return water temperature min. |
ºC | 55 | ||||
Temperature control range |
ºC | 45 - 80 | ||||
Required exhaust gas draught |
Pa | 24 | 26 | 28 | 31 | 34 |
Supply water temperature min./max. |
°C | 65/80 | ||||
Boiler weight |
kg | 462 | 513 | 529 | 669 | 735 |
Boiler water capacity |
l | 97 | 100 | 114 | 160 | 196 |
Chimney cross-section |
cmxcm | 14x14 | 16x16 | 16x16 | 18x18 | 22x22 |
Chimney cross-section |
Ø mm | 160 | 180 | 180 | 200 | 250 |
Minimum height of the chimney |
m | 6 | 7 | 7,5 | 9 | 10 |
Depth |
mm | 1280 | 1280 | 1280 | 1360 | 1360 |
Width |
mm | 1070 | 1110 | 1110 | 1210 | 1210 |
Height |
mm | 1430 | 1430 | 1497 | 1557 | 1777 |
Diameter of supply and return connections |
mm | 1½’’ | ||||
Diameter of the drain pipe |
½’’ | |||||
Power supply |
V/Hz | ∼230/50 | ||||
Maximum permissible ambient temperature |
ºC | 50 | ||||
Coil operating pressure min./max. |
bar | 2/6 |
Product specification
Power output | 24 kW |
Exhaust gas pipe diameter | 178 mm |
Weight | 529 kg |
Efficiency | 89 % |
Min. chimney diameter | 180 mm |
Boiler class (303-5:2012) | 5 |
Size of heated surface | 290 m² |
Water capacity | 114 L |
Boiler heating surface | 2.4 m² |
Inner metal sheet thickness | 6 mm |
Height | 1497 mm |
Width | 1280 mm |
Exhaust pipe distance measured from the floor to its base | 1030 mm |
Depth | 1110 mm |
Max. water temperature | 80 °C |
Max working pressure | 1.5 bar |
Required chimney draught | 28 Pa |
Minimum chimney section | 16 x 16 cm² |
Min. chimney height | 7.5 m |
Outlet and inlet size | 6/4 inch |
Min. incoming water temperature | 65 °C |
Power supply | 230/50 |
Warranty | 60 months |
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