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Boiler Defro Sigma Uni 48 kW

Boiler Defro Sigma Uni 48 kW

NN: 62264
Available Options

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 48 kW
Exhaust gas pipe diameter 194 mm
Weight 735 kg
Efficiency 89 %
Min. chimney diameter 250 mm
Boiler class (303-5:2012) 5
Size of heated surface 520 m²
Water capacity 196 L
Boiler heating surface 4.7 m²
Inner metal sheet thickness 6 mm
Height 1777 mm
Width 1360 mm
Exhaust pipe distance measured from the floor to its base 1289 mm
Depth 1210 mm
Max. water temperature 80 °C
Max working pressure 1.5 bar
Required chimney draught 34 Pa
Minimum chimney section 22 x 22 cm²
Min. chimney height 10 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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