Abstract: In a climatization system the influence of the outside air temperature is fed to a comparator which is also fed with a comparation voltage, successively variable during the starting time and obtained from a pulse generator of variable pulse-time-relation, and the climatization process is started at a balance point between the two voltages.

Abstract: A building heating system with a plurality of steam radiators is provided with a control unit for the steam boiler. The control unit receives signals representative of the outside temperature and the pressure of the steam in the feeder conduit. The control unit shuts off the boiler when the steam pressure in the feeder conduit exceeds a predetermined value corresponding to a given measured outside temperature. After the pressure has decreased to a value below the predetermined value for the measured temperature, the control unit restarts the boiler. Another control unit receives signals representative of the condensate temperature and the pressure in the return conduit. This control unit operates a vacuum pump in the return line and assures that the vacuum pressure in the return line is less than that which causes the condensate to vaporize.

Abstract: A temperature control system is provided which includes a control unit for controlling the start of a climatization procedure in a building. The system includes a pulse generator which times the operations of the control unit and an equivalent electrical circuit which controls the operations of the control unit. The latter simulates thermal properties of the building during temperature conditioning operations, i.e., heating or cooling, and receives respective voltages representative of the inside air temperature and the temperature outside of the building. The discharging, charging or equilization of voltages on condensors contained within the equivalent electrical circuit are used to determine the time for conditioning the temperature of the building after the conditioning system has been out of service for a given period of time and thus in the calculation of the correct instant for starting the conditioning procedure by the control unit.

Abstract: A controller is provided which includes a control unit for controlling the start of a climatization procedure in a building. The system includes a pulse generator which times the operations of the control unit and an equivalent electrical circuit which controls the operations of the control unit. The latter simulates thermal properties of the building during temperature conditioning operations, i.e., heating or cooling, and receives voltages representative of the inside and outside temperature of the building. The discharging, charging or equalization of voltages on condensors contained within the equivalent electrical circuit are used to determine the time for conditioning the temperature of the building after the conditioning system has been out of service for a given period of time and thus in calculation of the correct instant for starting the conditioning procedure by the control unit.

Abstract: A heat control system for a discontinuously operated heat radiator of the co-tube type is disclosed. A thermostat located away from the radiator controls the opening and closing means of an inlet steam valve located between the steam feeder connection and the radiator. A condensed water outlet valve also located between the steam feeder connection and the radiator is normally biased closed by its own weight. When the inlet steam valve is open the steam pressure on each side of the outlet valve is equal and the outlet valve remains closed as the steam entering the radiator is condensed and backs up behind it. However, when the inlet steam valve is closed, the steam pressure in the radiator is eliminated so that the steam pressure in the steam feeder connection acts on the outlet valve to push it open and allow the condensed water to drain from the radiator into the steam feeder connection.