Watts 0391007 Backflow Preventer Refrigerant It is designed to vent

It is designed to vent air out but does not incorporate a check valve to maintain a vacuum in the system after the boiler cycles off

Always verify the motor's rotation before installation to prevent reversed airflow

supports up to 12 cycles per day for optimized energy management

This motor operates at 1140 RPM

or if you measure an open circuit across the limit terminals while the plenum is cool

Watts 0391007 Backflow Preventer Refrigerant It is designed to ventThe Watts 0391007 009M2QT 2" Backflow Preventer is a professional grade reduced pressure zone assembly designed to protect potable water supplies by preventing backsiphonage and backpressure in high hazard applications. This unit serves as the direct replacement and update for the legacy Watts 0063010, featuring a compact, bronze body construction that simplifies installation in tight mechanical rooms. The Watts 009 Series utilizes a modular design