Method for operating a closed hot-water installation and apparatus to be used therewith
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United States of America Patent
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-
Mar 4, 2003
Grant Date -
N/A
app pub date -
Jun 18, 2001
filing date -
Sep 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method and apparatus for operating a closed hot water installation provided with a pipe system, a boiler, heat exchangers, an expansion tank, a water make-up provision and a de-aerator, the method including the steps of opening a non-return valve to allow air to escape, detecting a water level in the de-aerator, feeding water to the closed installation when the level falls below a predetermined level, blocking opening of the non-return valve until the water level has fallen to a first level and starting the feed of water when a second lower level is reached.
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