The 5502-136M features a standard 2-1/8 inch "D" stem

Technicians should look for audible "chirping" or grinding noises

This transformer is built to handle the high-cycle demands of commercial and residential garage heaters

and solid-state control boards

check for blockages in the vacuum tubing or the flue before replacing the component

Warrick 3R4C0 4' Probe Els PW 17895 The 5502-136M features a standardThe Warrick 3R4C0 4' Probe is a high performance, 1 4" threaded electrode designed for precision conductive liquid level control in demanding industrial and commercial environments. Built from 316 stainless steel, this general purpose rod offers superior corrosion resistance, making it an ideal choice for boiler feedwater systems, process washers, and storage tanks. This metallic rod is engineered to screw directly into Warrick Series 3E, 3F, 3G, or