Install the Spirovent® at the point of lowest solubility, which is the place in the system where the temperature is the highest and pressure the lowest. Note as well to always "pump away" from the expansion tank, never towards it.

Related Work

Penn State University - State College, PA
Penn State is one of our largest university customers with more than 90 units installed across campus.
South Point Hotel, Casino & Spa - Las Vegas, NV
Custom fabricated 24" high velocity combination air eliminator / dirt separator for the hot water system and custom fabricated 30" high velocity air / dirt for chilled water.
Silence is Golden (Yellow) for Berners-Schober
“The pumps are much quieter as is the circulating water
Eastern Illinois University - Charleston, IL
After having tried numerous other methods, the first Spirovent was installed in Carman Hall to deal with a long history of no heat calls and clogging valves.