| A flow-through
ionization chamber containing copper-silver electrodes
is installed on a hot-water line. As electrical
current is applied to the electrodes, positively
charged copper and silver ions are released into
the hot-water system. The positive ions bond with
negatively charged sites on bacteria, causing the
organisms to die. In addition, ASHRAE (the American
Society of Heating, Refrigeration and Air-Conditioning
Engineers) has recently produced a comprehensive
guideline (ASHRAE Guideline 12-2000) entitled Minimizing
the Risk of Legionellosis Associated with Building
Water Systems. This guideline is much more extensive
in scope than its title may suggest. It provides
broad coverage and ‘minimizing the risk of
Legionellosis’ information for many specific
water-disseminating systems |
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