The alphanumeric lettering identification on the exterior ensures field technicians can quickly verify the model’s 135°F/57°C rating and FX/ROR activation method

Does this unit include the mounting screws or baseplate

This kit includes the critical internal components—specifically the D-4460 seat disc

Designed specifically for the Honeywell DR4300 series and other compatible circular chart recorders

OEM Integrity: Dedicated York S1-024-25329-706 specifications ensure exact terminal alignment and mounting footprint

Lochinvar & A.O. Smith 100165921 Flame Sensor Els PW 17895 The alphanumeric lettering identification onThe Lochinvar & A. O. Smith 100165921 Flame Sensor is a critical OEM replacement part engineered for precise flame rectification in high efficiency gas fired systems. Designed as a direct crossover for the PLT30001 flame sensor, this component monitors the burner's ionization signal to ensure safe and continuous combustion. If your boiler or water heater is experiencing intermittent flame ignition failure or short cycling, a fouled or oxidized flame