Galmet storage water heater SGW(L)x2 80L with double coil, polyurethane insulation, model 21-084800

Galmet SGW(L)x2 80L is a storage water heater with an 80-litre capacity and two internal heat exchanger coils. The double-coil design allows connection to an external boiler or a solar/auxiliary heat source, keeping domestic hot water available while enabling efficient heat transfer. The cylinder is fitted with polyurethane thermal insulation that reduces standby heat loss and helps maintain temperature stability over longer periods.

Advantages

The double-coil configuration separates primary and secondary circuits, enabling simultaneous connection of two heat sources such as a boiler and a solar thermal system without mixing fluids. Polyurethane insulation provides low thermal conductivity and compact thickness for reduced heat loss and consistent hot water temperature. The 80-litre capacity balances storage volume with footprint, making it suitable for typical residential installations. The heater is constructed for reliable heat exchange and straightforward integration with common heating systems.

Suitable for

• Domestic hot water storage in single-family homes and apartments
• Integration with gas, oil or electric boilers as the primary heat source
• Connection to solar thermal collectors or secondary renewable heat sources
• Systems requiring stable hot water supply for showers, taps and appliances

Key specifications

• Storage capacity: 80 litres
• Heat exchanger: two internal coils (double coil) for separate circuits
• Insulation: polyurethane thermal insulation to reduce standby losses
• Intended use: domestic hot water storage and heat exchange with external sources
• Installation type: vertical domestic storage cylinder

How to use

Install the heater according to local regulations and manufacturer installation instructions, ensuring secure mounting on a suitable surface and proper connections to supply and return lines for each heat source. Connect one coil to the primary heat source (for example a boiler) and the second coil to the auxiliary source (for example solar thermal). Fit appropriate safety and control devices such as pressure relief valves, thermostats and check valves to protect the installation and prevent backflow. Commission the system by filling and venting the cylinder, checking for leaks, and setting the required temperature on the control unit.

Usage recommendations

For optimal performance, use corrosion protection measures compatible with domestic hot water systems, maintain regular inspection of valves and heat exchanger connections, and follow recommended water treatment guidelines where required by local water quality. Periodic inspection and professional servicing of the connected heat sources will help preserve efficiency and extend service life.