In a gauge manifold, the blue hose is connected to which side?

The blue hose in a gauge manifold is connected to the low side of the refrigeration system. This connection allows for the measurement and monitoring of the low-pressure side of the system, which is critical for diagnosing the operational status of refrigerants and ensuring that the system is functioning within proper parameters.

Connecting the blue hose to the low side is essential for tasks such as evacuating the system, charging it with refrigerant, or monitoring pressure levels. It is important to accurately track the low side pressure, as this directly affects cooling performance and system efficiency.

Understanding the role of the low side in refrigeration systems is vital for operating engineers, as it plays a crucial part in system balance and performance assessments.