Characteristic
– Class 5 according to PN-EN 303-5:2012
– Ecodesign
– High efficiency
– Automatic work
– Fast and easy operation
– Economical fuel combustion
– Smokeless and ecological combustion
– Ability to control the boiler’s operation via Internet (option)
– Possibility to install the fuel tank on the left or right side of flues
KRS TECH DUO +
The KRS Tech Duo model boilers with retort burner are intended for water open system central heating installations with both gravitational and forced water circulation. The installation must be secured according to currently valid and detailed national provisions. Steel KRS Tech Duo model boilers with automatic fuel supply system are intended for work in central heating installations and domestic hot water preparation installations in housing development buildings, i.e. single family houses, commercial pavilions, garages, and utility buildings. Boilers constitute a steel structure welded from certified 6 mm thick boiler sheets that ensure a long-term use. Intended for burning eco-pea coal with 5-25 mm granulation. The controller handles CH and DHW pumps, as well as auxiliary pump and valve actuator. There is a possibility to connect room regulator and SafeIT (control via Internet) module.
| L.p | Specification | J.m | Information | |||||||
| 1. | Boiler type | KRS TECH DUO+ 18kW | KRS TECH DUO+ 22kW | KRS TECH DUO+ 26kW | KRS TECH DUO+ 39kW | KRS TECH DUO+ 50kW | KRS TECH DUO+ 75kW | KRS TECH DUO+ 100kW | ||
| 2. | Nominal thermal power | kW | 18 | 22 | 26 | 39 | 50 | 75 | 100 | |
| 3. | Size of heated surface | m² | <180 | <220 | <260 | <400 | <500 | <750 | <1000 | |
| 4. | Capacity of the storage chamber Fuel | kg | 168 | 190 | 375 | 560 | 840 | |||
| 5. | Combustion upon nominal power 100% | h | 48 | 40 | 32 | 25,5 | 72 | 55 | 63 | |
| 6. | Efficiency | % | 89,5 | 89,9 | 88,6 | 88,89 | 88,9 | 89,6 | 89,6 | |
| 7. | Minimum working temperature | °C | 10 | |||||||
| 8. | Maximum working temperature (water supply) | °C | 85 | |||||||
| 9. | Temp. of water in the supply min./max. | °C | Min./Max – 55/80 | |||||||
| 10. | Minimum working temperature (return) | °C | 50 | |||||||
| 11. | Exhaust fumes temperature | Nominal power | °C | 229 | 190 | 186 | 188,5 | 180,3 | 168 | 182 |
| Minimal power | °C | 163 | 114 | 88 | 143,3 | 88,2 | 118 | 128 | ||
| 12. | Mass of the boiler (±5%) | kg | 301 | 372 | 439 | 565 | 680 | 880 | 1380 | |
| 13. | Wymagana pojemność zasobnika ciepła Qmin>0,3QN | L | 360 | 440 | 520 | 780 | 1000 | 1500 | 2000> | |
| 14. | Min. wysokość komina | m | 6 | 6 | 6 | 8 | 9 | 10 | 11 | |
| 15. | Emission of noise | dB | >60 | >80 | ||||||
| 16. | Power supply | V/Hz/A | 230 / 50 / 0,5÷3,15 | |||||||
| 17. | Maximum permissible working pressure | bar | 1,5 | |||||||
| 18. | Test pressure | bar | 3 | |||||||
| 19. | Flow resistance | at ΔT=10K | mbar | b.d | ||||||
| at ΔT=20K | mbar | b.d | ||||||||
| 20. | Fuel | Black coal sort of pea, granulation 5-25mm | ||||||||
| 21. | Required exhaust flow | mbar | 0,25 | 0,27 | 0,28 | 0,3 | 0,33 | 0,35 | 0,38 | |
| 22. | Cross-section of the chimney hole – minimum | cm² | 190 | 215 | 256 | 414 | 500 | 712 | 905 | |
| 23. | Exhaust mass flow | Nominal power | g/s | 13 | 13,9 | 21,2 | 28 | 38,9 | 46,2 | 68 |
| Minimal power | g/s | 4,8 | 7,6 | 6,9 | 11 | 16,3 | 18,7 | 26,7 | ||
| 24. | Water capacity of the boiler | L | 51 | 69 | 73 | 92 | 117 | 156 | 361 | |
| 25. | Power consumption | W | 190 | 262 | 362 | |||||
| 26. | Exchanger surface area | m² | 1,9 | 2,3 | 2,7 | 3,9 | 5 | 7,3 | 10,3 | |
| 27. | The cross – section of the flue | mm | Ø158 | Ø190 | Ø245 | Ø350 | ||||
| 28. | Water supply connector/return | cak | 1 1/2 | 2 | 2 1/2 | |||||
| 29. | Dimension | A | mm | 785 | 885 | 885 | 980 | 978 | 1125 | 1290 |
| B | mm | 1050 | 1150 | 1150 | 1244 | 1242 | 1389 | 1555 | ||
| C | mm | 378 | 378 | 378 | 381 | 380 | 402 | 402 | ||
| D | mm | 158 | 158 | 158 | 190 | 190 | 245 | 350 | ||
| E | mm | 927 | 927 | 1027 | 943 | 1138 | 1206 | 1453 | ||
| F | mm | 1174 | 1174 | 1274 | 1258 | 1458 | 1608 | 1928 | ||
| G | m | 26 | 265 | 264 | 264 | 264 | 264 | 264 | ||
| H | mm | 1244 | 1257 | 1344 | 1343 | 1543 | 1545 | 2038 | ||
| I | mm | 460 | 460 | 460 | 646 | 646 | 652 | 858 | ||
| J | mm | 1132 | 1136 | 1136 | 1330 | 1610 | 1636 | 2055 | ||
| K | mm | 1231 | 1222 | 1263 | 1442 | 1446 | 1582 | 1900 | ||
