Danfoss PSH Series Scroll Compressors: Application Guide

Introduction to PSH Compressors

This application guide provides comprehensive technical information for the Danfoss PSH series scroll compressors, covering models from PSH019 to PSH039. Designed for efficiency and reliability, these compressors are suitable for R410A and R454B refrigerants and are available in both single and tandem configurations.

Key Technologies and Features

• Intermediate Discharge Valves (IDVs): Enhance seasonal efficiency and optimize performance.
• Injection Systems: Support Vapor, Wet, and Liquid injection for expanded operating envelopes and improved efficiency.
• Design Improvements: Feature heat shields for reduced acoustic levels and improved motor cooling.

Technical Specifications and Performance

The guide details product identification, certifications (CE, UL), and technical specifications including dimensions, electrical connections, and performance data for both heating and cooling applications. It also covers sound and vibration characteristics and detailed operating envelopes for various conditions.

Application and Installation Guidance

Essential information is provided on mechanical connections, piping best practices, compressor mounting, and electrical wiring. The document outlines critical application management aspects such as oil return, sound and vibration mitigation, superheat control, and managing off-cycle refrigerant migration. It also includes guidelines for commissioning and system pressure testing.

Ordering and Support Resources

Details on ordering single and industrial pack compressors are available, along with a comprehensive list of accessories and spare parts. Danfoss also provides extensive online support resources, including product documentation, learning platforms, and software tools like Coolselector®2 and Ref Tools.