93 of 114M-AP-001-EN Rev. Q
Chapter 17.0 Piping Considerations
Care should be exercised when selecting pipe sizes as they will vary according to their application.
Section "Chapter 14.0 Sample Refrigeration Circuits" provides examples of compressor piping
arrangements for the most common applications.
The motor-cooling line should be channeled from the liquid line; refer to Section "13.1 General
Requirements" on page 61 for more information. Danfoss LLC requires the installation of a sight
glass and full-flow liquid dryer in the motor-cooling line.
NOTE
Some applications may require alternative arrangements. Contact Danfoss LLC for further assistance, if required.
• • • CAUTION • • •
The discharge line must be fitted with a non-return valve to prevent reverse flow into the discharge port, which can cause
damage to compressor components.
All pipe work should be carried out in accordance with industry standards. Brazing without the use of nitrogen will result in
debris being deposited in the pipes, potentially leading to blockage or damage.
Discharge piping should contain a caution label from system manufacturers or compressor installers that the surface is hot.
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