Abstract: This invention provides an arrangements for the method of control of a boiler heating capacity for a hydronic heating system, which is recommended for a heat supply to a single building or to a group of buildings. The control of heating system capacity is provided by changing the boiler supply hot water temperature inversely with the outside air temperature measured by a momentary temperature sensor and transformed by a temperature converter. The control is achieved by changing fuel supply to a burner of a boiler proportionally to a disagreement between a boiler supply water temperature and determined value of the outside air temperature. It is, however, obvious that the same method of control can be used for steam boilers and for chillers to control buildings space heating and space cooling as well.

Abstract: An air heating apparatus such as a fan heater, a forced circulation type ware air heater, and, an air conditioner and heater, is operated while the amount of radiation is taken into consideration. Moreover, after a PMV value of the room to be heated is generated from the temperature, amount of radiation, etc. of the room to be heated, the burning amount, air flow and the like are controlled to make the PMV value 0.

Abstract: In order to provide a controller which is readily adaptable for use with a plurality of different heaters, an arrangement is provided for storing a plurality of control and regulation programs for the operation of a plurality of different heaters. Based on selection instructions identifying a particular heater, an appropriate control and regulation program can be selected from among said plurality of programs. The controller then provides suitable control and regulation signals to said heater in accordance with the selected program.