Johnson Controls S-2300-4 Selector Switch Els PW 17895 When troubleshooting a gas furnace

When troubleshooting a gas furnace pilot light or commercial burner that won't stay lit

or infrared heater

The 100412 is the approved replacement for the 054981

ensuring no modifications are needed for older installs

the 5D51-78 includes a removable solid copper jumper between the fan and limit circuits

Johnson Controls S-2300-4 Selector Switch Els PW 17895 When troubleshooting a gas furnaceAs a veteran HVAC technician, I know that manual pneumatic control remains the backbone of many legacy system architectures. The Johnson Controls S 2300 4 Selector Switch is a high performance pneumatic air switch designed specifically for the manual redirection of air flow within these complex pneumatic control systems. This five port configuration features three exhausting ports and one pair of switching ports, making it the ideal solution for