VRF Refrigerant Pressure and Vacuum Hold Test

Inspection template for documenting VRF refrigerant piping pressure testing and triple-evacuation vacuum hold results, including test pressure, hold duration, leak observations, final vacuum in microns, and readiness for refrigerant charge.

Inspection Identification

• Project name and site location recorded
  Enter the project name, building, floor, and exact area where the VRF piping test was performed.
• Inspection date and time recorded
  Record the date and time the pressure or vacuum hold test was completed.
• Inspector and contractor/company identified
  Enter the inspector name, contractor name, and commissioning representative if applicable.
• Applicable test procedure or project specification referenced
  Reference the governing project specification, manufacturer procedure, or commissioning document used for the test.
• System status confirms piping is ready for test
  Confirm the VRF refrigerant piping section under test is complete, isolated, and ready for pressure or evacuation testing.

System and Test Equipment

• VRF system and circuit identification recorded
  Identify the outdoor unit, indoor unit group, branch selector box, circuit number, and piping segment tested.
• Test medium identified
  Select the medium used for the pressure test.
• Pressure gauge or digital manifold calibrated and within date
  Verify the pressure measurement device used for the test is calibrated and current.
• Micron gauge calibrated and connected at proper location
  Verify the micron gauge is functional, calibrated if required by project procedure, and connected at the system location specified for evacuation verification.
• Vacuum pump oil condition acceptable
  Confirm vacuum pump oil is clean and at the proper level to support evacuation to the specified micron target.

Pressure Test Setup and Hold

• Test pressure recorded
  Enter the stabilized pressure applied to the VRF refrigerant piping during the pressure test.
• Pressure hold duration recorded
  Enter the total pressure hold duration used for the test.
• Pressure remained stable with no unexplained drop
  Confirm the test pressure remained stable for the full hold period with no unexplained pressure loss.
• All joints, flares, brazed connections, and service points inspected for leaks
  Verify the entire tested piping segment was inspected for leaks during the pressure hold period using an approved method.
• Leak observations documented
  Describe any leak indications, repair actions, or confirmation that no leaks were observed.

Triple Evacuation and Vacuum Hold

• Evacuation cycle 1 completed and recorded
  Confirm the first evacuation cycle was completed before breaking with dry nitrogen or as required by the project procedure.
• Evacuation cycle 2 completed and recorded
  Confirm the second evacuation cycle was completed per triple-evacuation procedure.
• Evacuation cycle 3 completed and recorded
  Confirm the third evacuation cycle was completed before final vacuum hold verification.
• Final vacuum level recorded
  Enter the final stabilized vacuum reading after evacuation and hold.
• Vacuum hold verified with no rise above acceptable limit
  Confirm the system held vacuum without a rise above the project acceptance criteria during the observation period.

Safety, Deficiencies, and Final Sign-Off

• LOTO and safe work practices followed where applicable
  Confirm lockout-tagout, PPE, and safe work practices were used as required by the jobsite procedure and OSHA 1910.147 where applicable.
• No open deficiencies or non-conformances remain
  Confirm all identified leaks, test failures, or other non-conformances were corrected before sign-off.
• System approved for refrigerant charge
  Confirm the VRF refrigerant piping system passed pressure and vacuum hold requirements and is ready for refrigerant charging.
• Corrective actions or punch list items documented
  List any remaining corrective actions, responsible party, and target completion date if applicable.
• Inspector signature
  Inspector sign-off confirming the recorded test results are accurate.