Water heater Galmet Wymiennik SGW(S) 400 MAXI, capacity 400 L, synthetic leather (polyurethane) covering

Galmet Wymiennik SGW(S) 400 MAXI is a 400‑litre indirect water heater designed to store and supply domestic hot water. The cylinder functions as a buffer tank compatible with boilers and heat pumps, providing a stable hot‑water reserve for multi-point draw-offs. The outer layer is covered with synthetic leather (polyurethane), offering a smooth, durable surface that simplifies cleaning and installation in visible utility spaces.

Advantages

The large 400 L capacity reduces cycling of the heat source and supports simultaneous use at several outlets. The indirect design allows integration with different heat generators, while the synthetic leather covering resists moisture and mechanical wear, maintaining a tidy appearance. Its construction ensures efficient thermal stratification and minimizes standby heat losses when connected to appropriate insulation and controls.

Suitable for

• Residential buildings with multiple bathrooms or high simultaneous hot water demand
• Small commercial facilities such as guesthouses or small offices
• Systems using boilers, gas boilers, oil boilers, or heat pumps as heat sources
• Installations requiring a hot‑water buffer for improved system efficiency

Key specifications

• Nominal volume: 400 litres
• Type: indirect (coil/exchanger inside) hot‑water storage tank
• External covering: synthetic leather (polyurethane)
• Intended use: domestic hot water storage and buffering
• Compatibility: designed to work with standard boilers and heat pumps

How to use

Connect the water heater to the primary heating circuit (boiler or heat pump) and to the domestic cold‑water supply and hot‑water distribution network according to local plumbing and safety standards. Commission the unit with appropriate valves, controls, and an expansion vessel where required. Set the system controller or thermostat to the desired storage temperature and allow the primary heat source to charge the tank. Regularly check connections, anode condition (if applicable), and the surface of the synthetic covering during routine maintenance.

Usage recommendations

Install the unit on a level, load‑bearing surface with sufficient access space for servicing. Ensure insulation and control settings are optimized to reduce standby losses. Follow local regulations for pressure relief and safety devices, and schedule periodic inspections of piping connections and heat exchanger integrity to maintain performance.