you likely require the 30-158-A series for proper fitment and electrical sync

Durable Construction: Features a high-reliability 36TX11 sensor disc designed to withstand the thermal cycling of gas unit heaters

Field-proven to handle a 1

immediate replacement is required to maintain system safety

and D6723306

Schneider Electric (Barber Colman) 2354-502 Relay Els PW 17895 you likely require the 30-158-AThe Schneider Electric (Barber Colman) 2354 502 Relay is a precision engineered pneumodular diverting relay designed for demanding pneumatic control systems. This SPDT pneumatic switch provides reliable snap acting performance for critical HVAC automation functions, including diverting supply lines or managing branch line exhaust. Factory set for a 16 19 psig switching range, the 2354 502 diverting relay ensures seamless transitions: below 16 psig,