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The Rinnai 805000040 Flue Gas Sensor with Cable is designed for use with all Rinnai tankless water heater models. This sensor monitors flue gas levels and ensures safe operation of the unit. It connects directly to the heater and features an adjustable alarm set point.
This flue gas sensor provides essential safety monitoring for Rinnai tankless water heaters, ensuring reliable performance.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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