Which boiler models use the 3771101

By accurately monitoring outdoor temperatures

making it a critical universal replacement part for your service truck

Streamlined Installation: Compact footprint with 90-degree male terminals allows for easy integration into tight HVAC control cabinets

By providing a slower

MARS 90360 Relay 321894-709 Which boiler models use theThe MARS 90360 Relay is a heavy duty SPST 24V relay engineered for rigorous switching applications in HVACR control systems. Recognized as a core component for modern technicians, this switching relay serves as a reliable interface for fan motors, refrigeration compressors, and heating elements. With a 24VAC coil and a 18 Amp contact rating, it provides the necessary ampacity for inductive motor loads and resistive heating circuits. This unit is a