How to Connect Blue Compound Gauge to HVAC Systems?

Blue Hose Connection to HVAC Systems

Connecting the blue compound gauge to HVAC systems involves attaching the blue hose to the low-pressure side of the system. The blue hose is specifically designed for this purpose, as it is color-coded to indicate connection to the low side in HVAC and refrigeration practices.

Reading Low-Side Pressure

The blue compound gauge is used in conjunction with the blue hose to read the pressure on the low side of the HVAC system. By connecting the gauge to the low-pressure side, technicians can accurately measure the system's low-side pressure.

Color-Coding in HVAC Practices

Standard color coding in HVAC and refrigeration aligns blue with the low-pressure side and red with the high-pressure side of the system. This helps technicians easily identify and connect the appropriate hoses and gauges for different pressure readings.

Principle of Pressure Measurement

Aneroid gauges and manometers are commonly used in HVAC and refrigeration to measure pressure. These devices operate based on the principle that pressure (P) is equal to the height of a fluid column (h) multiplied by the fluid density (p) and acceleration due to gravity (g), as expressed by the formula P = hpg.

Overall, connecting the blue compound gauge to HVAC systems involves using the blue hose on the low-pressure side to accurately measure the system's low-side pressure. Understanding the color coding and principles of pressure measurement is essential for proper gauge connection and pressure readings in HVAC and refrigeration practices.