The SP12541B utilizes 3/4-inch NPT inlet/outlet openings

Simplified Installation: Standard 1/2” connections allow for direct integration into existing gas plumbing without extensive modifications

this unit features a broad setpoint range of -30 to 130°F

Is the SP12237 compatible with LP (Propane) units

ensuring system head pressures remain within specified tolerances during peak ambient conditions

Lennox 38K28 Motor Trans 328140-751 The SP12541B utilizes 3/4-inch NPTWhen you are troubleshooting a Lennox unit and the inducer won't kick or you are getting communication faults at the board, the Lennox 38K28 Motor Trans is often the culprit. This genuine HVAC OEM replacement part, also identified by part number 38K2801 and legacy number LB 89286A, serves as the critical draft inducer transition and motor interface. Built with a rolled steel frame and an aluminum flange, this NEMA rated motor transformer is designed