Lena /28CE
•24 kW, 29 kW and 40 kW thermal capacity options
•Full combustion technology with Premix burner
•High efficiency up to %108 (according to EN 677)
•High fuel saving with condensing technology
•Stainless steel heat exchanger
•Non-gradual modulation between %15 -100 thanks to
frequency-controlled fan
•Operation with frequency-controlled pump
•Hot water comfort according to EN 13203 ***
•NOx class 5
•Environmentally-friendly with low emission rates
•Failure detection and safety systems
•Opportunity of applying cascade system up to 15 units.
•Compatible with solar energy
•Operation with storagetank (optional)
•Integrated operation with outdoor sensor (optional)
•Integrated operation with room thermostat (optional)
•Embossed control panel designed specially for use of
sight-disabled and elderly family members
• Manufactered in Daikin production plant
Technical Parameters
| HER METIC BOILER | Digife Duo | |
| UNITS | KM1-28CE | |
| Energy Performance | ||
| Nominal heat inlet max./ min. | KW | 30.7/12.2 |
| Burning Efficiency | % | 94.2 |
| Efficiency (60/80c) | % | 91.5 |
| Burning Performnce(Directive 92/42/EEC) | *** | |
| N0x Class | 2 | |
| Heating system emissions | ||
| Flue gas temperature (G20) | C | 129.1 |
| CO2 Content (G20) | % | 7.88 |
| CO2 Content (G20) | PPM | 100 |
| N0x Class | 3 | |
| Heating circuit | ||
| Min. operation pressure | bar | 0.5 |
| Max. operation pressure | bar | 3 |
| Expansion tank capacity | liter | 7 |
| expansion tank initial pressure | bar | 1 |
| Heating circuit temperature range max./min. | C | 85/35 |
| Domestic water circuit | ||
| Domestic water temperature range max./min. | C | 55/35 |
| Hot Water amount DT=30 °C | Lt/min | 12.3 |
| minimum hot water flow | Lt/min | 2.1 |
| Plumbing Pressure max .min. | bar | 10/0.5 |
| Power data | ||
| power supply Voltage | V/Hz | 230/50 |
| Electric Power | W | 115 |
| Electrical Safety Class | IP | x5D |
| Gas circuit and consumption data | ||
| Natural gas (G20) inlet Pressure | mbar | 21 |
| LPG(G30/G31)inlet pressure | mbar | 30 /37 |
| Natural gas (G20) consumption (maks. /min.) | M3 / h | 2.88 / 12 |
| LPG(G30/G31) consumption (maks. /min.) | kg / h | 2.15/0.9 |
| Dimmensions and flue sizes | ||
| Weight (Net) | kg | 31 |
| Weight (with package) | kg | 34 |
| Package dimnsions (L x H x D) | mm | 730/403/345 |
| Max. Flue length (60/100 mm) | m | 5 |
| Flue diameter | mm | 100/60 |
