temperature actuated modulating water valve designed specifically for heating applications requiring precise thermal regulation

and particulate matter from entering high-precision fuel lines and burner controls

Is field modification necessary for PTAC units

you should verify the part number against your original equipment manufacturer (OEM) technical manual for exact compatibility

Lennox 69W55 Pressure Switch Els PW 29614 temperature actuated modulating water valveThe Lennox 69W55 is a critical two stage pressure switch engineered for precision airflow monitoring in high efficiency gas furnaces. Specifically designed as a Lennox OEM replacement part, this 102737 03 switch features dual set points to support staged heating operations: a high pressure set point of 0. 55" W. C. and a low pressure set point of 0. 20" W. C.. As a furnace safety switch, it functions by verifying that the inducer motor is creating