Safety Devices - Rinnai RH180 Installation Fundamentals

Safety Devices

• Flame rod: Detects when flame is present or is extinguished.
• Overheat bi-metal sensor: Detects overheated water conditions.
• Boiling protection sensor: Monitors heat exchanger water temperature.
• Heat exchanger thermal fuse: Detects heat exchanger overheat condition.
• Burner/combustion fan sensor: Indicates if there is a blocked flue.
• Flammable vapor sensor: Monitors for flammable vapors in intake air supply.
• CO sensor: Monitors exhaust gasses for poor combustion, (NOTE: not a room CO
sensor).
• Built in surge protector.
• Power supply is protected by 5-amp glass fuse.
• Main circuit board monitors component operation and will post error codes or
maintenance codes on the temperature controller if abnormal operation is detected.
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