Conversion kit for propane for MCR/II 34/39 S100389

Boiler conversion to liquefied gas for model MCR/II

The propane conversion kit (catalog no. S100389) is a dedicated module essential for changing the fuel type in MCR/II series gas boilers with outputs of 34 kW and 39 kW. This device enables safe and code-compliant operation of the heating system using liquefied petroleum gas (LPG) instead of standard natural gas. This conversion is crucial in locations without access to the municipal gas network, where the user opts to connect propane tanks or cylinders.

The conversion process involves more than just nozzle replacement; it requires precise gas flow regulation and adjustment of combustion parameters. The kit includes all components necessary for this operation, eliminating the need to purchase additional parts from other manufacturers. For the installer, this means faster service completion and assurance that the boiler will be commissioned in accordance with De Dietrich manufacturer guidelines.

Key components and application

The primary function of this kit is to adapt the burner and control system to the higher energy density contained in propane compared to methane. Without the appropriate kit, attempting to operate the boiler on liquefied gas would lead to improper combustion, increased flue gas emissions, and ultimately equipment failure or safety hazards.

The kit includes a complete set of nozzles with appropriately sized orifices ensuring proper liquefied gas flow, pressure regulators or adaptation components that stabilize system operation with the changed fuel type, and an installation manual facilitating correct parameter configuration in the boiler controller. By using original De Dietrich parts, the gas system's tightness and optimal flame characteristics are preserved. This is particularly important for maintaining high boiler efficiency and low operating costs after conversion.

Benefits for the installer and end user

Choosing the original conversion kit directly translates to the safety and reliability of the entire heating installation. The user gains the ability to freely choose the gas source without needing to replace the entire heating device, which is a significantly more economical solution than purchasing a new boiler factory-adapted for LPG.

For the professional installing the boiler, this kit offers quick completion time since all necessary elements are available in one package, and the boiler's operation after conversion meets legal requirements regarding flue gas emissions. Using original parts does not void the manufacturer's warranty on the boiler, provided correct installation is performed. It is important to remember that nozzle replacement alone is insufficient; proper controller calibration and leak testing of connections after installation are also required. The S100389 kit is designed to facilitate these tasks and ensure stable device operation throughout the heating season.

This kit's application is limited to MCR/II series boilers with outputs of 34 kW and 39 kW, ensuring ideal gas flow matching for these specific models. It is intended exclusively for conversion from natural gas to liquefied gas (propane), eliminating the need to purchase a new device when changing the fuel source. The parts manufacturer is De Dietrich, guaranteeing full compatibility with the original control systems and burners of these boilers.

Remember that work on the gas system must be performed exclusively by a qualified installer possessing appropriate certifications. Improper installation may lead to serious hazards to health and property.