Circuit for economic operation of solid-fuel boiler in central heating system, controls charge pump according to signals indicating operating, maximum and minimum temperatures are reached

摘要

A water heater (3) is connected from the supply of the solid-fuel boiler (1) via a circulating pump (4), and a heating circuit (V-R) is connected from the supply via a charge pump (5). A temperature measuring device (6,7) is arranged on the boiler for delivering a respective signal when the operating temperature and the maximum temperature are reached. A further temperature measuring device (8) on the boiler outputs a signal when the minimum value of the hot water temperature is reached. A circuit (2) controls the charge pump according to the temperatures signals. .