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5 Aug 2003 at 7:00 pm
#294840
Harold Kestenholz
Participant
The expansion tanks used with newer boilers for the past 20 years are installed hanging from the nipple that connects it to the system at the top, as in here: http://64.226.150.132/hydronic/des/start.htm#Expansion
The older expansion tanks without a diaphragm were installed horizontally.