Ranco O16-557 Pressure Control 30067439-890 upside-down installation is not recommended

upside-down installation is not recommended

or the system failing to trigger the fan after the burners ignite

'HERM' connects to the compressor start winding

Using the included high-temperature silicone gasket prevents flammable vapor infiltration and maintains the integrity of the FVIR system

Ranco O16-557 Pressure Control 30067439-890 upside-down installation is not recommendedThe Ranco O16 557 Pressure Control is a heavy duty single low pressure control engineered for precision sensing in commercial refrigeration and HVACR systems. Built with a NEMA 1 enclosure and a robust plated steel frame, this SPDT pressure switch provides flexible control, allowing for "open high" or "open low" operations. It features an adjustable 12" WC to 50 PSI pressure range and a field tunable 5 to 35 PSI differential, ensuring stable