Type II High Pressure Equipment Certification Practice Test 2025 - Free High Pressure Equipment Practice Questions and Study Guide

Question: 1 / 400

How can a technician determine the type of refrigerant in a packaged rooftop unit?

Check the temperature readings

Examine the nameplate of the unit

To determine the type of refrigerant in a packaged rooftop unit, examining the nameplate of the unit is the most effective method. The nameplate typically contains essential information, including the refrigerant type used in the system. This is standardized practice for all HVAC equipment, as it ensures that technicians can quickly identify the refrigerant without having to perform additional tests or measurements.

While temperature readings, service manuals, and pressure measurements can provide useful information about the system's operation and may indicate refrigerant type indirectly, they do not offer the direct identification that the nameplate does. The nameplate is specifically designed to give clear and immediate details about the refrigerant, making it the most reliable source for this purpose.

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Consult the service manual

Measure the pressure in the system

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