A Very-High-Pressure appliance is one that uses a refrigerant with a liquid phase saturation pressure above 355 psia at 104F. This definition includes but is not limited to appliances using which of the refrigerants listed below:

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Multiple Choice

A Very-High-Pressure appliance is one that uses a refrigerant with a liquid phase saturation pressure above 355 psia at 104F. This definition includes but is not limited to appliances using which of the refrigerants listed below:

Very-High-Pressure appliances are defined by having a liquid-phase saturation pressure above 355 psia at 104F. To see which refrigerants fit, consider their saturated liquid pressures at 104F (40C). R-23, R-13, and R-503 each have liquid-saturation pressures above 355 psia at that temperature, reflecting their high-pressure characteristics. Therefore, an appliance using any of these refrigerants would be classified as Very-High-Pressure, so all of the listed refrigerants are included.

Very-High-Pressure appliances are defined by having a liquid-phase saturation pressure above 355 psia at 104F. To see which refrigerants fit, consider their saturated liquid pressures at 104F (40C). R-23, R-13, and R-503 each have liquid-saturation pressures above 355 psia at that temperature, reflecting their high-pressure characteristics. Therefore, an appliance using any of these refrigerants would be classified as Very-High-Pressure, so all of the listed refrigerants are included.

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