Air Trapped In Radiant Floor

If pressure is dropping below the 15 psi it is an indication of air still trapped in your system.

Air trapped in radiant floor.

Thus creating a vacuum this will suck air into the system. Air trapped within a closed radiant system is the most common cause of inefficient system performance. Fortunately it s an easy problem to solve and won t become an issue at all if care is taken during the initial filling process. An air system can also be used to supply central air conditioning and air cleaning.

Legalett air heated radiant floor heating systems are entirely embedded in concrete including the heater box. You will need one or two wall mounted fan coils in order to keep the humidity low enough so that no condensation occurs on the floor air dew point floor temp. Eventually this air can become trapped in the hot water lines. It is a closed loop system where air is moved through either 2 or 4 inch pvc tubes which are non corrosive so that no dust from the air in the home is introduced into the system.

Central heating systems use either a furnace with hot air ducts or a boiler with hot water hydronic pipes and radiators including radiant under floor heat. But much of the sensible cooling will be done by the radiant floor. Why the legalett radiant floor system works. The closed system expansion tank is pre charged and should not need any pressure.