Storage water heater Galmet SG-W(L)E 120L with double U-shaped coil, horizontal, yellow polyurethane insulation

Galmet SG-W(L)E 120L is a horizontal storage water heater designed for domestic hot water systems. The unit features a double U-shaped heat exchanger coil that enables connection to two heating circuits or to a boiler and a secondary heat source such as a solar system. The tank is insulated with yellow polyurethane foam to reduce standby heat loss and improve energy efficiency while installed in utility rooms, basements or attics where horizontal mounting is required.

Advantages

The double U-shaped coil allows independent or simultaneous heat supply from two circuits, improving integration with existing heating and renewable sources. Horizontal orientation simplifies installation where vertical space is limited. Yellow polyurethane insulation provides consistent thermal protection and contributes to reduced heat loss during periods without active heating. The design is compatible with standard domestic plumbing and supports combined domestic hot water storage and auxiliary heating functions without requiring specialized interfaces.

Suitable for

• Domestic hot water storage in single-family homes
• Systems requiring combined heating from a boiler and solar or other secondary source
• Installations with limited vertical space where horizontal mounting is necessary
• Properties needing a buffer tank for two separate heat circuits

Key specifications

• Capacity: 120 litres
• Orientation: Horizontal
• Heat exchanger: Double U-shaped coil (two independent circuits)
• Insulation: Yellow polyurethane foam
• Intended use: Domestic hot water storage and auxiliary heating support
• Installation location: Indoor (utility room, basement, attic) with horizontal mounting

How to use

Install the heater in a horizontal position following the manufacturer's installation instructions and applicable local regulations. Connect the two heat exchanger circuits to the appropriate coil ports: one coil can be connected to a boiler and the other to a solar thermal or auxiliary source. Connect cold water supply and hot water outlet to the designated tank fittings, and fit safety devices such as a pressure relief valve, non-return valve and temperature controller or thermostat. Fill the tank, vent air from the heat exchanger coils and piping, check all connections for leaks and verify correct operation of safety devices before switching heating sources on.

Usage recommendations

Perform annual visual inspections of insulation and coil connections, flush the tank periodically where water hardness or sediment accumulation requires it, and test pressure relief valves and temperature controls regularly. Follow Galmet installation and maintenance instructions and local codes to ensure safe and efficient operation.