If the operating temperature exceeds the ambient air temperature, what is the appropriate installation method?

The appropriate installation method when the operating temperature exceeds the ambient air temperature is to use a vapor barrier. A vapor barrier is designed to prevent moisture from passing through and condensation forming on colder surfaces. When the operating temperature of piping or equipment is higher than the surrounding air temperature, there is a risk of condensation occurring if moisture-laden warm air comes into contact with the cooler surfaces. This can lead to insulation damage, corrosion, or other issues related to moisture accumulation.

Using a vapor barrier effectively isolates the warm, moist air from the cooler surfaces, thereby reducing the potential for condensation and the associated problems. This precaution is crucial in maintaining the integrity of insulation and overall system performance.