Solar heater, method and device for diagnosing a volume of air in a solar fluid circuit filled with a solar fluid for operating a solar heater

摘要

The method involves detecting the beginning of an overflow of the solar fluid (F) by the high point, where rotational speed or power consumption of a handling unit (12) is detected. The beginning of an overflow of the solar fluid is evaluated in relation to its remain lifting height, in order to diagnose the air quantity from the rotational speed or power consumption that is required for generating the initiated overflow. The air quantity is available in the solar fluid cycle (K). Independent claims are also included for the following: (1) a device for diagnosing an air quantity in a solar fluid cycle of a solar heating system; and (2) a device for filling a solar heating system.