BHE buffer tanks are designed to operate with cold or hot water. Their main purpose is to store a sufficient volume of heating medium and, as a consequence, reduce the on/off switching of the main heat source—mainly the heat pump. An additional function is to act as a hydraulic separator (low loss header—LLH) between the heating circuit and the installation circuit to ensure the heat pump always has the correct flow rate. BHE buffer tanks are made of mild steel and insulated with polystyrene foam and leatherette coating. All units are equipped with an automatic air vent and a neodymium magnet separator placed on the drain valve. Neodymium magnet separator (NMS) for BHE buffer tanks NMS consists of a powerful neodymium magnet and metal basket constructed on a standard drain valve. Ferromagnetic particles, according to different studies, represent between 50 and 80% of all central heating system residues. Those elements are particularly dangerous to installations equipped with electronic pumps and other high-value and very sensible components such as valves or sensors. NMS is placed in the bottom part of BHE (or any other device with a drain valve), facilitating residue collection. The filling state can be easily checked by momentarily turning off the drain valve – low or no flow indicates the necessity to clean the device.
