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Storage water heater KOSPEL WW-100.TERMO-HIT, 100 L, double coil heat exchanger
KOSPEL WW-100.TERMO-HIT is a 100-litre storage water heater with a double coil heat exchanger designed for domestic hot water production. The cylindrical tank stores heated water and features two separate internal coil exchangers that allow independent connection of two heat sources, such as a boiler and solar thermal system, or a boiler and an auxiliary heater. The unit is intended for residential installations requiring stored hot water and flexible integration with multiple heating circuits.
The double coil design enables simultaneous use of two different heat sources, improving system versatility and allowing priority control of primary and secondary heating circuits. With a 100 L capacity, the heater provides sufficient stored hot water for typical family use while maintaining compact dimensions for wall-mounted or utility-room installation. The construction includes corrosion-resistant materials for the water tank and exchangers, ensuring durable operation and stable thermal performance.
Connect the primary and secondary heat source circuits to the respective coil exchanger ports following local installation codes and the manufacturer's hydraulic diagram. Fill and vent the system before commissioning, then set the required hot water temperature via the control interface or thermostat supplied with the system. Operate the unit within the recommended pressure and temperature ranges; ensure appropriate safety valves and fittings are installed. Regularly check connections and perform scheduled maintenance to maintain heat transfer efficiency.
For optimal performance, connect the primary heat source to the lower coil to prioritise fast tank charging and the secondary or renewable source to the upper coil. Use corrosion-inhibiting water treatment where water hardness or aggressive water chemistry is known. Periodic inspection of anode protection (if present) and descaling of coil surfaces in hard-water areas will extend service life and preserve efficiency.
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