Description
The Johnson Controls P67AA-1 is an HVAC DPST open low-pressure switch with high-performance capacity. This switch works through pressure in HVAC systems and beeps when pressure is below 3 PSI or above 30 PSI. It acts as the regulator of the performance and safety of the system by turning on or off equipment in response to limits. Some of the applications include heating coils in refrigeration systems, prevention of evaporator freeze-up, and protection of compressors; it increases operating efficiency through reduction of possible harm to equipment and downtime resulting from pressure differential. Because of its dual-pressure feature, it may be used in various kinds of HVAC, setting and controlling two pressures independently.
