Jinan Financial Bureau to use the four sets SECESPOL intelligent heat exchanger unit since 2002 has been running for many years, and domestic hot water heat exchanger unit run for 24 hours, never fails, there is no scaling phenomenon.
The above video is shot in the Finance Bureau heat transfer station, if your computer with speakers or headphones, also please note SECESPOL intelligence unit during normal operation of the heat exchanger less noise. (July 2002 shooting of this film, only to run the domestic hot water heat exchanger station unit.)