Description
The Johnson Controls P74BA-15 differential pressure control device is applied to control ammonia systems in HVAC equipment. In ammonia applications, it provides control and measurement of fluctuating pressure by working in the pressure range of 8-70 PSI. It may be used in a variety of environments because it is built to withstand temperatures of -40 to 85°C. This is used in most of the chillers, refrigeration units and many HVAC systems where there is need to ensure constant ammonia stress. It has a 15 PSI differential setting that enables the user to make fine tuning adjustments and enhance system performance as well as efficiency. When operating within the pressure range of the defined parameters, the Closhi feature ensures stable and safe operation.
