while this is a complete assembly

The Aaon R34700 Sensor is a high-precision HVAC relative humidity sensor designed for critical climate control applications

allowing for flexible mounting and connection to the system's liquid or suction lines

Using a 5-second TFI board in a system designed for 7 or 10 seconds may cause premature lockouts

and PCH/PCL liquid level control and low water cut-off units

Lochinvar & A.O. Smith 100233609 Gasket 318518-761 while this is a completeThe Lochinvar & A. O. Smith 100233609 Gasket Flapper Valve is a critical OEM replacement component engineered for high efficiency condensing boilers and commercial water heaters, including the Lochinvar Armor X2 and Shield SN126 401 series. As a veteran grade HVAC flapper valve, this part serves as a directional check mechanism within the combustion or venting assembly, preventing hazardous exhaust gas backflow and maintaining proper pressurized seal