Lochinvar & A.O. Smith 100208502 Relay 340155-7024 The HVAC air pressure sensor

The HVAC air pressure sensor utilizes high-sensitivity diaphragms and normally open (N/O) silver-alloy contacts to provide reliable continuity and integrated safety logic

Use the range adjustment screw to set the opening point within the 70 to 260 PSI range while the system is operating under load

and legacy CFC refrigerants facilitate inventory consolidation

The direct-coupled bonnet eliminates the need for complex linkages when pairing with modern Siemens OpenAir or Flowrite drives

An air-fuel or oxy-acetylene torch with a neutral to slightly carburizing flame is standard

Lochinvar & A.O. Smith 100208502 Relay 340155-7024 The HVAC air pressure sensorThe Lochinvar & A. O. Smith 100208502 Relay is a high performance 1. 5HP pump relay kit engineered for precise load management in commercial and residential hydronic systems. As a critical OEM replacement part, this heavy duty relay ensures seamless electrical sequencing for 1. 5 horsepower circulation pumps, preventing motor lag and protecting the integrated control board from high amperage spikes. This component is widely utilized across the