Boiler DEFRO SIGMA E 20 kW
Specification/boiler type | Unit | 12 | 16 | 20 | 24 | 36 | 48 |
Power range | [kW] | 3,6 - 12 | 4,8 - 16 | 6 - 20 | 7,2 - 24 | 10,8 - 36 | 14,4 - 48 |
Boiler class according to PN-EN 303-5 | [-] | 5 | |||||
Heating area | [m2] | 1,9 | 2,3 | 2,7 | 3,1 | 4,3 | 5,2 |
Area of heated rooms | [m2] | to 220 | to 260 | to 290 | to 350 | to 450 | to 600 |
Basic fuel | [-] | eco-pea coal of grain size 5-25 mm | |||||
Fuel class | [-] | biogenic fuel - A | |||||
Fuel tank capacity | [kg] | ∼165 | ∼191 | ∼266 | |||
Fuel consumption | [kg/h] | 1,8 | 2,2 | 2,9 | 3,5 | 5,2 | 7,1 |
Optimum thermal efficiency | [%] | ∼90,1-90,7 | |||||
Max. permissible operation pressure | [bar] | opened system 1,5 / closed system 2,5 | |||||
Required flue gas draught | [mbar] | 0,22 | 0,24 | 0,26 | 0,28 | 0,31 | 0,34 |
Exhaust temperature for nominal power for minimum power |
[ºC] [ºC] |
89 - 124 64 - 71 |
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Flue gas stream for nominal power for minimum power |
[g/s] [g/s] |
6,8 1,6 |
8,6 3,1 |
12,0 3,6 |
14,4 5,5 |
20,9 8,0 |
30,4 12,5 |
Max. temp. of water on supply | [ºC] | 65 / 80 | |||||
Return water temperature min. | [ºC] | 55 | |||||
Temperature control range | [ºC] | 45 - 80 | |||||
Boiler weight | [kg] | 400 | 449 | 515 | 523 | 657 | 728 |
Boiler water tank capacity | [l] | 88 | 104 | 110 | 124 | 170 | 200 |
Chimney section | [cm x cm] [Ømm] |
14 x 14 160 |
15 x 15 170 |
17 x 17 195 |
19 x 19 225 |
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Minimum chimney height | [m] | 5 | 6 | 7 | 7,5 | 9 | 10 |
Supply | [V/Hz] | 230V/50Hz | |||||
Maximum power consumption | [W] | 123 | 140 | ||||
Width | [mm] | 1360 | 1380 | 1460 | |||
Depth | [mm] | 1065 | 1110 | 1210 | |||
Height | [mm] | 1405 | 1535 | 1685 | |||
Diameter of supply and return Dn | 1 1/2" | ||||||
Diameter of trigger pipe | 1/2" | ||||||
Diameter of flue | [mm] | 159 | 178 | 194 | |||
Maximum permissible ambient temperature | [ºC] | 50 | |||||
Working pressure of the coil | [bar] | 2/6 |
typ / dimension | A | B | C | D | E | F | G | H | I | J | K | L | pos. 6 | pos. 7 | pos. 8 |
20 | 130 | 920 | Ø 178 | 1280 | 1385 | 1405 | 865 | 115 | 1110 | 605 | 640 | 1360 | G 1 1/2" | G 1 1/2" | G 1/2" |
FUNCTIONS IMPLEMENTED BY THE CONTROLLER
- innovative ADAPTIVE CONTROL control system using turbine flow meter ensuring optimum selection of fan and feeder operation parameters
- archive of last twenty alarm conditions of the boiler
- possibility to export temperatures history to external memory (USB)
- possibility to operate with exhaust fan module.
- control of fan and auger conveyor
- control of actuator of mixing valve as a standard
- weekly programs
- control of central heating and domestic hot water pump
- control of two additional pumps
- possibility to connect room controller with RS or conventional communication
- possibility to connect DEFRO GSM module
- possibility to connect new version of DEFRO Internet module allowing remote change of boiler operation parameters (access to user and service menu)
- possibility to control two additional valves using DEFRO MZ modules
- servicing of motoreducer with reverse operation (not applicable to PZ version)
CONTROLLER EQUIPMENT
- large colour graphical display
- touch panel
- adjustable inclination of the screen, from 45° to 105°
- temperature sensor for central heating, domestic hot water, valve, additional, flue gas and external temperature
- temperature protection (thermal overload relay)
- temperature sensor for auger (protection)
- housing made of high quality materials resistant to high and low temperatures
controller K1P v4 with colour touch panel servicing four pumps /central heating, domestic hot water, circulation, floor pump/. Servicing of mixing valve. Possibility to control using GSM or INTERNET (optional extra); adjustable angle of position of control panel
5 years of warranty for heat exchanger tightness; 2 years for the remaining components and efficient operation of the boiler;
heat exchanger made of certified boiler steel;
High heat efficiency up to 90% due to increased heat recovery from exhaust
NZ version adapted for installation in closed system, reinforced design, cooling coil pipe installed (optional extra)
screw of fuel feeder made of one piece;
combustion chamber with highly effective retort burner;
change of direction of boiler door’s opening (does not apply to incandescent interior door);
ADAPTIVE CONTROL control - adjustment of boiler operation based on air flow through the heat exchanger;
F version- system for mechanical cleaning of heat exchanger
Energy-saving motoreducer with high efficiency with automatic reverse in case of locking of fuel feeder;
sensor indicating opening container’s cover;
Product specification
Power output | 20 kW |
Exhaust gas pipe diameter | 178 mm |
Weight | 515 kg |
Efficiency | 90.1 - 90.7 % |
Boiler class (303-5:2012) | 5 |
Ecodesign | yes |
Size of heated surface | 290 m² |
Water capacity | 110 L |
Slow combustion | 92 h |
Boiler heating surface | 2.7 m² |
Height | 1405 mm |
Width | 1380 mm |
Exhaust pipe distance measured from the floor to its base | 920 mm |
Depth | 865 mm |
Depth with exhaust pipe | 1110 mm |
Max. water temperature | 80 °C |
Max working pressure | 1.5 / 2.5 bar |
Silo volume | 165 dm³ |
Required chimney draught | 26 Pa |
Minimum chimney section | 16 x 16 cm² |
Min. chimney height | 7 m |
Outlet and inlet size | 1 ½” inch |
Min. incoming water temperature | 55 °C |
Power supply | 230V / 50Hz |
Flue gas temperature | 89 - 124 °C |
Opinions
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