provided the system is flushed according to local codes after installation

For suction line protection after a burnout

This SPST automatic reset limit switch functions with a 110-150F temperature range

The switch opens when head pressure drops to 300 PSIG (stopping the fan) and will automatically close once the pressure rises back to 400 PSIG (restarting the fan)

Rheem-Ruud 62-24044-71 Flame Rod Kit provided the system is flushedThe Rheem Ruud 62 24044 71 Flame Rod Kit is a critical OEM replacement part designed for precise flame rectification in high efficiency gas furnaces and water heaters. As a veteran technician knows, a fouled or degraded flame sensor is the primary cause of intermittent ignition failure and short cycling. This kit includes the high temperature ceramic insulator and the specialized alloy rod required to withstand constant exposure to the burner flame