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It also includes return temperature boosting with a high-efficiency pump and other control components for precise control of the heating system
All three fitting types meet the requirements for drinking water installations
⭐ Original Defro replacement firebrick – high heat resistance and long service life ⭐ Suitable for Defro DS 20 kW and DS II 25 kW boilers ⭐ Individual purchase possible: Primary stone or secondary stone separately ⭐ Complete Set with primary & Secondary stone available ⭐ Perfect heat conduction in the combustion chamber – for efficient operation
guaranteeing smooth operation
Solarflüssigkeit 20 Liter Irleh It also includes return temperatureSolar fluid 20 liters The 20l canister of solar fluid is a special, ready to use heat transfer and antifreeze agent. (down to 22C) Suitable for flat plate collectors and vacuum tube solar thermal systems State of the art inhibitors guarantee optimal protection against corrosion. The fluid It is nitrite , phosphate , and amine free. Sealing materials are not attacked by either the concentrate or its dilutions. The solar fluid is also very well suited
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