As a normally closed air pressure switch

and air conditioning control circuits

this expansion valve is specifically calibrated for R-410A refrigerant and must match the refrigerant type listed on the nameplate of the condenser

With an ambient operating temperature rating from -40°F to 140°F and a maximum surge pressure of 15 PSI

This assembly is strictly validated for use with commercial gas water heaters in the Cyclone BTH 300A

Trane SEN2669 Pressure Transducer Refrigerant As a normally closed airThe Trane SEN2669 is a rugged, OEM pressure transducer designed for high precision HVAC differential pressure monitoring in commercial and industrial air handling systems. Engineered to measure a range of 0 5 inches WC (Water Column), this 5VDC pressure sensor provides a stable linear output ideal for integration with building automation systems (BAS) and VFD control loops. As a veteran grade Trane replacement part, the SEN2669 ensures accurate