Hot water exchanger for gas boilers OKC 500 NTRR/BP with two spiral coils, enameled 121390101

• Models equipped with a flange connection (at the same time it serves as an inspection opening of the tank), allows the installation of a heating module (heater).
• OKC NTRR/BP - has two coils with a large heat exchange surface - possibility of supply from two different heat sources, outside the heating season possibility of heating with an optional heater TPK or TJ 6/4"
• No heater as standard.
• Modern ThermoGen4 insulation ensures low heat loss to the environment.
• Increased resistance to hard and chlorinated water thanks to the high-quality anti-corrosion coating Crystal Enamel.
• Magnesium anode is added