Regulating system, regulator heat exchanger, method for providing a secondary medium and method for retrofitting a residence

摘要

The system (13) has a main heat exchanger (21) and a choke, and a control heat exchanger (1) is arranged in series with the main heat exchanger. A throttle actuator (25) operates in response to temperature measured by temperature measuring device (23) on return of primary and/or secondary mediums. Independent claims are included for the following: (1) method for providing secondary medium; and (2) method for retrofitting residence.