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Cylinder water heater Galmet SGW(S) Tower Grand 400 — standing enamelled domestic hot water tank with 3.8 m² spiral coil, polyurethane insulation, PVC...
The Galmet SGW(S) Tower Grand 400 is a standing enamelled domestic hot water cylinder engineered for integration with heat pump systems. It incorporates an internal spiral coil heat exchanger with a 3.8 m² exchange area to transfer thermal energy from the heat pump circuit to the stored domestic hot water. The tank features enamel protection for the inner surface, polyurethane thermal insulation to reduce heat loss, and a PVC outer casing for durable external protection. The design is intended for central domestic hot water storage in residential installations where a continuous supply of hot water from a heat pump is required.
The internal spiral coil with a 3.8 m² surface provides efficient heat transfer from low-temperature heat sources such as heat pumps, improving system performance and reducing recovery time. Enamel lining protects the tank interior against corrosion and extends service life when used with appropriate water treatment. Polyurethane insulation minimizes standby heat loss, contributing to energy savings and stable hot water temperatures. The PVC casing offers impact resistance and a clean external appearance suitable for utility rooms.
Connect the spiral coil circuit to the heat pump primary loop according to the heat pump and cylinder installation manuals, ensuring appropriate flow rates and system balancing. Install cold water inlet, hot water outlet and safety devices (pressure relief valve, thermostatic mixing valve if required) following local regulations and standards. Commission the tank by filling, venting air from the coil and vessel, and verifying correct operation of circulation pumps and controls. Regular maintenance includes inspection of the enamel surface where accessible, checking insulation integrity and ensuring safety devices operate correctly.
For optimal performance with heat pumps, maintain recommended flow rates through the spiral coil and use corrosion control measures appropriate for the local water quality. Periodically check and service safety valves and, if needed, install a thermostatic mixing valve to deliver safe outlet temperatures to end users. Follow local codes and the manufacturer's installation instructions when integrating the cylinder into an existing heating system.
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