Detail ID 5.0103.4
Forced Air
Refrigerant Loop
Desired Outcome

Safe, efficient, and durable compressor operation

SF Single Family Site-Built Housing
MH Manufactured Housing
MF Multifamily Housing


  • MF
Specification Objective

Size compressor based on equipment manufacturer specifications and ASNI/ACCA Standard 5 QI (HVAC Quality Installation Specification)

Properly sized compressor

  • MF
Specification Objective

Locate new compressor on a stable and level surface with adequate ventilation as required by manufacturer specifications

Durable, stable, and effective location selected

  • MF
Specification Objective

Size refrigerant lines to match compressor manufacturer specifications and desired return velocities

Install new filter dryers when installing new compressors

Install P-type oil traps at the base of suction line risers and inverted P-type oil traps at the top of risers

Slope horizontal runs 1" per 20' toward the compressor

Install vibration absorbers in accordance with manufacturer specifications

Route refrigerant piping so as not to inhibit service access to compressor or associated equipment

Piping installed to ensure proper oil return, proper operation, and not interfere with normal maintenance or service procedures

  • MF
Specification Objective

Install field wiring in accordance with applicable codes (i.e., NFPA 70) ensuring proper voltage, frequency, and phase coincide with the nameplate

Equipment operates safely and as designed

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Refrigerant Loop