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Hot water storage tank Immergas USB 125 V3 – 125 L capacity, indirect cylinder
The Immergas USB 125 V3 is a 125-litre hot water storage tank designed as an indirect cylinder for integration with boilers, heat pumps or other central heat sources. The unit provides stored domestic hot water for household taps, showers and appliances while maintaining temperature stability through hydraulic coupling to a primary heating circuit. The inner surface is treated to resist corrosion, supporting long-term operation and preserving water quality in domestic systems.
The design of the Immergas USB 125 V3 offers a compact footprint with a 125 L usable volume suitable for small to medium households. Its indirect cylinder layout separates primary heating fluid from potable water, reducing contamination risk and enabling flexible use with different heat sources. Corrosion-resistant inner coating and standardized hydraulic connections simplify installation and maintenance while helping maintain consistent hot water delivery.
Install the Immergas USB 125 V3 according to local plumbing and heating regulations, connecting the primary heating circuit to the cylinder heat exchanger ports and the potable water inlet and outlet to the domestic supply lines. Commission the system by filling the tank and primary circuit, purging air from the connections, and setting appropriate temperature controls on the boiler or heat source. After commissioning, the cylinder stores heated water delivered by the primary heat source and supplies it to domestic outlets on demand.
For optimal performance, ensure the storage tank is sized to match household hot water demand and the heating source capacity. Schedule periodic inspection of hydraulic connections and the condition of the inner coating, and follow local maintenance practices for water heaters to avoid scale buildup and to maintain hygiene and efficiency.
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