Twin coil indirect water heater without cleaning flange

The THERMALINO twin coil indirect water heater stores domestic hot water heated through two separate coils, so two heat sources such as a heat pump and a gas boiler can heat the same tank without their circuits mixing. Sizes run from 100 to 3000 L, with a WRAS BS 6920-1 approved epoxy coating for drinking water.

The twin coil indirect water heater is a storage tank for domestic hot water. Water from an external heat source flows through a coil inside the tank and heats the stored water indirectly, so hot water is ready for continuous use. Two separate coils let two sources feed the same tank without mixing, for example a heat pump on one coil and a gas boiler on the other, or a solar thermal circuit with a boiler as back-up. The inside of the tank is protected by a WRAS BS 6920-1 approved epoxy resin coating, so the tank can be used on drinking water installations. A magnesium anode and a pressure gauge are fitted as standard. The tank is rated for a maximum operating pressure of 10 bar, with a test pressure of 13 bar, and a maximum operating temperature of 95 °C. Insulation is rigid PU foam or soft foam, and the casing is navy. This model has no cleaning flange. The range covers 100, 160, 200, 300, 400, 500, 800, 1000, 1500, 2000, 2500 and 3000 L. The larger sizes suit hotels, hospitals and schools where many showers run at the same time. The smaller and mid-range sizes serve large villas, mountain houses and holiday homes with several bathrooms, and buildings without a gas supply that heat water from a heat pump, solar collectors or other sources. The coils are connected to the primary circuits of the heat sources, and the tank to the cold supply and the hot water distribution. An external electric heater can be connected as an additional or back-up heat source. Coil ratings, connection sizes and dimensions for each size are in the technical data sheet.