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This specific RJR-6 model is rated for 120-volt operation
this 24V control relay facilitates reliable switching for fan motors
Built with a heavy-duty forged brass body and a full 3/4" orifice
For any service technician troubleshooting a furnace not igniting
accurate feedback and consistent branch pressure regulation without the hunting common in lower-grade units
White-Rodgers 21V51U-843 HSI Kit Refrigerant This specific RJR-6 model isThe White Rodgers 21V51U 843 is a professional grade Universal 2 Stage Integrated Furnace Control Kit designed for high efficiency systems utilizing a variable speed ECM blower motor. This comprehensive HSI ignition control solution replaces over 40 existing White Rodgers models, including the 50V51 XXX and 50V61 XXX series. It features a 16 pin interface for precise ECM motor control and includes a 120V nitride ignitor to upgrade older 80V silicon