Single coil indirect water heater without cleaning flange

This single coil indirect water heater stores domestic hot water heated by a coil connected to a heat pump, gas boiler or solar thermal system, so hot water is always ready. It is available from 100 to 3000 L, with a WRAS BS 6920-1 approved epoxy resin coating, and is supplied with a magnesium anode and a pressure gauge.

The single coil indirect water heater is a hot water storage tank with one internal heat exchanger coil. Water from an external heat source, such as a heat pump, a gas boiler or a solar thermal system, circulates through the coil and heats the domestic water stored in the tank without the two circuits mixing. The stored water stays ready for use, which suits buildings where many outlets draw hot water at the same time. The inside of the tank is protected by an epoxy resin coating approved to WRAS BS 6920-1, so the tank is suitable for drinking water installations. A magnesium anode and a pressure gauge come fitted as standard, and the tank can also take an external electric immersion heater as a backup or additional heat source. Insulation is rigid PU foam or soft foam. The tank has a maximum operating pressure of 10 bar, a test pressure of 13 bar and a maximum operating temperature of 95 °C. This version has no cleaning flange. The range runs from 100 L to 3000 L, which covers everything from a single home to hotels, hospitals and schools with heavy simultaneous shower demand. In large villas, mountain houses and holiday homes it supplies several bathrooms at once. Where there is no gas supply, it stores hot water from whatever heat source is available. The installer connects the coil to the flow and return of the heat source, usually with a dedicated circulator or zone valve, and connects the tank to the cold supply and the hot water distribution. A safety valve and an expansion vessel go on the domestic side. Connection sizes, dimensions and coil data for each capacity are in the technical data sheet.