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

Higher-Ed Gallery
For almost two decades Spirotherm® has been working with facilities departments to provide solutions for problem systems.
Cottey College - Nevada, MO
From the President's house to the power plant, to almost all buildings on campus, Spirovents have contributed to efficient system performance across the campus.
University of Arkansas Medical Sciences - Little Rock, AR
High velocity 18" air eliminator on the hot water system, and custom high velocity 30" air eliminator on chilled water system.
Silence is Golden (Yellow) for Berners-Schober
“The pumps are much quieter as is the circulating water