US approval - cont.....12 Aug 2009 11:52
The result, according to Sabien, is that the system can substantially reduce the demand for fuel during less demanding periods.
The M2G system, for which Sabien Technology has a patent pending, is designed to be used in a variety of commercial applications that consume natural gas, LP gas, Class C oil or Class D oil. Although designed for multiple boilers, it can also be used singly and can be fitted to many types of boiler, including forced draught and atmospheric systems.
UK tests at three premises owned by Norwich Union were conducted for 30 days between January and March last year. During that time, gas consumption and associated carbon emissions were reduced by between 14 per cent and 17 per cent, with an average of 15 per cent across the sites. The average payback was only 50 weeks, with annual CO2 savings of 76 tonnes.
http://www.theengineer.co.uk/Articles/312620/Boiler+controller.htm