these are interchangeable part numbers for the same Lennox OEM temperature sensor assembly used across various commercial and residential platforms

308196-751

this transformer is rated for 208/230V primary applications but is standardly used in 240V residential circuits

Key Benefits Precise Compatibility: Fits Raypak 315A

Technicians should check for an open winding

Lochinvar & A.O. Smith 100111539 Controller 319848-301 these are interchangeable part numbersThe Lochinvar & A. O. Smith 100111539 Controller is the current, direct replacement for the legacy 9006852005 model. This CCB 3 EI Temp Controller serves as the primary central control board for commercial electric water heaters, specifically engineered for 3 element configurations. Designed to manage high demand commercial water heater parts systems, this digital temperature controller provides precise modulation of heating cycles and integrated