thanks. off I go to the library.
"HeatMan" wrote in message
...

"Mark Schofield" wrote in message
...
On a new Weil-McLain WTGO3 boiler servicing three zones (Taco zone
valves),
should the single circulator be piped in the supply from the boiler to
the
zones or in return from the zones to the boiler? The current boiler,
which
is to be replaced, has the circulator in the return line. However, the
contractor/supplier suggests pumping away from the boiler. the reasoning
for
the placement would also be appreciated.Thanks, Mark S.



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