| 摘要 |
Method of setting the output of a circulating pump installed in a hot water heating system and drivable by a variable rpm electromotor, including driving water by the pump from a water heater through a piping system to consumer devices situated in various locations served by the heating system, returning the water to the water heater by way of a return pipe, sensing the flow velocity of the water by a measuring device installed in the piping system, obtaining from the measuring device an electric voltage proportionate to the flow velocity, applying the voltage to a regulator which regulates the electromotor of the pump, generating output voltage values by the regulator, at least in lower voltage ranges, which are, up to 60% of a maximum voltage, higher than those voltage values which correspond to a characteristic curve of the circulating pump, and steplessly varying the rpm of the electromotor as a function of the output voltage of the regulator. |
