The MPM Caldo S-I 18 is a modern wood gasification boiler with 18 kW nominal heat output for the efficient heating of residential buildings. The boiler is designed for operation with log wood , meets the Ecodesign requirements and achieves the energy efficiency class A+. Operation requires a buffer tank.
Highlights / Benefits
⭐ Efficient wood gasification – High efficiency with clean combustion
⭐ Ecodesign & Class 5 compliant – Meets EU requirements according to Regulation (EU) 2015/1189
⭐ 18 kW heat output – Suitable for single-family homes and smaller commercial properties
⭐ Manual loading with log wood – Independent of fossil fuels
⭐ Mandatory operation with buffer tank – Optimal efficiency and longer service life
Detailed description
Area of application & target group
The MPM Caldo S-I 18 is suitable for single-family homes, multi-family homes as well as smaller commercial and workshop buildings. It is intended for operation in open or closed heating systems and can also be used for domestic hot water preparation in conjunction with a suitable heat exchanger.
Everyday benefits
Thanks to the wood gasification technology, the fuel is used particularly efficiently. In combination with a buffer tank, you can achieve long burn intervals, a uniform heating operation and a reduction in fuel consumption .
Technology & equipment
The boiler is made of certified boiler steel (P265GH) and features a two-chamber design with separate gasification and combustion chambers. The primary and secondary air supply is manually adjustable. A thermal safety drain (cooling coil) is prepared as standard.
Efficiency & environment
With a seasonal energy efficiency of 80% and the energy efficiency class A+ , the boiler meets the current Ecodesign requirements. The emission values are within the permissible limits according to the EU regulation.
Compatibility & system integration
Operation is only permitted in conjunction with a buffer tank ≥ 800 liters . For safe operation, a return temperature increase to at least 55 °C is required. The boiler can be operated with various controllers (e.g., ecoMAX, Vera Bord, IE-72v5).
Technical data
| Feature |
Value |
| Manufacturer |
MPM Projekt Marcin Nykiel |
| Model |
Caldo S-I 18 |
| Product type |
Wood gasification boiler |
| Nominal heat output |
18 kW |
| Generated useful heat |
18.6 kW |
| Efficiency at nominal output |
83.3% |
| Seasonal energy efficiency |
80% |
| Energy efficiency class |
A+ |
| Energy efficiency index (EEI) |
117 |
| Fuel |
Log wood (hardwood, moisture ≤ 25%) |
| Boiler class |
5 (PN-EN 303-5 + A1:2023) |
| Recommended buffer tank volume |
800 liters |
| Max. operating temperature |
90 °C |
| Minimum return temperature |
55 °C |
| Max. operating pressure |
3 bar |
| Flue gas temperature at nominal output |
approx. 130 °C |
| Boiler water volume |
85 liters |
| Weight |
approx. 450 kg |
| Flow/return connection |
6/4" |
| Power supply |
230 V / 50 Hz |
| Electrical power consumption |
max. 0.023 kW |
| Standards & directives |
CE, Ecodesign (EU) 2015/1189 |
Scope of delivery
Accessories / recommendation
For standard-compliant and efficient operation, we recommend:
-
Buffer tank ≥ 800 liters
-
Return temperature boosting group (55 °C)
-
Thermal drain safety device (BVTS valve)
-
Heating control & sensors
-
Safety group & connection sets
You will find suitable components in the categories Buffer tanks, Safety groups and Heating accessories on gemashop.de.
Installation & safety instructions
The installation and commissioning may only be carried out by a qualified specialist company .
Operation is only permitted with a buffer tank . A return temperature below 55 °C leads to corrosion and to loss of warranty. Only fuels approved by the manufacturer may be used.
FAQ
1. Which fuel is permitted?
Only split logs (hardwood) with a residual moisture content of ≤ 25 % are permitted.
2. Is a buffer tank mandatory?
Yes, operation is only permitted with a buffer tank of at least 800 liters.
3. Does the boiler comply with the Ecodesign Directive?
Yes, the MPM Caldo S-I 18 meets the requirements of EU Regulation 2015/1189.
4. For which buildings is the boiler suitable?
For single-family houses, smaller multi-family houses, as well as commercial and workshop buildings.
5. Can the boiler be operated in a closed system?
Yes, provided the safety requirements according to the standard are met.
6. What energy efficiency class does the boiler have?
The boiler is classified in energy efficiency class A+ .
Conclusion
The MPM Caldo S-I 18 is a powerful, ecodesign-compliant wood gasification boiler for anyone who relies on efficient and independent heat supply with split logs . Order now and sustainably reduce heating costs.
