TS EN 14511-1

TS EN 14511-1 is a terminology and classification standard for electrically driven compressor air conditioners, liquid chilling packages and heat pumps used for space heating and cooling. In this field, clear definitions are essential because the same equipment family may be described differently depending on whether it is used for comfort conditioning, process cooling or heat pump operation.

Why the terms matter in HVAC and heat pump equipment

As general technical context, air conditioning, chilling and heat pump systems all rely on a refrigeration cycle, but their intended use and performance description are not identical. Air, water or brine can serve as heat transfer media, and the way capacity, operating condition and rating data are described affects how products are compared. A consistent vocabulary helps manufacturers, laboratories and specifiers use the same meaning for the same thermal concepts.

According to the supplied scope, this part of EN 14511 defines the terms and definitions used for rating and performance of these systems, and it also covers process chillers. That makes it a foundational reference for interpreting technical documentation rather than a document about installation practice or a product test procedure by itself.

What this part addresses

• Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors.
• Use of air, water or brine as heat transfer media.
• Terms and definitions associated with rating and performance.
• Process chillers as an additional covered equipment group.