Water Source Heat Pump Loop Commissioning Inspection

Commissioning inspection for water source heat pump building loops, verifying loop temperature limits, flow at each terminal unit, isolation valve operation, and basic safety/compliance checks.

Inspection Record and Scope

• Project or system identifier recorded
  Record the building, loop name, project number, or asset ID being commissioned.
• Inspection date and time recorded
  Document when the commissioning inspection was performed.
• Inspector and commissioning representative identified
  Enter the names and roles of the inspector, commissioning agent, or responsible technician.
• Design criteria or setpoints available for review
  Confirm that loop temperature limits, design flow values, and terminal unit requirements were available before inspection.

Loop Temperature Verification

• Loop supply temperature within approved operating range
  Measure the water source heat pump loop supply temperature and compare it to the approved operating range.
• Loop return temperature within approved operating range
  Measure the loop return temperature and verify it remains within the approved operating range.
• Temperature differential is reasonable for system operation
  Record the observed supply-to-return temperature differential and confirm it is consistent with the system design intent.
• Loop temperature alarms or abnormal conditions observed
  Confirm whether any temperature alarms, unstable readings, or abnormal operating conditions were observed during the inspection.

Terminal Unit Flow Verification

• Terminal unit flow verified at each sampled unit
  Verify that measured flow matches the design intent at each terminal unit included in the inspection sample.
• Measured terminal unit flow rate
  Record the measured flow rate for the terminal unit being inspected.
• Flow control device or balancing valve set correctly
  Confirm the flow control device, balancing valve, or circuit setter is adjusted to the documented setting.
• Terminal unit responds properly during operation
  Confirm the unit starts, circulates, and responds without short cycling, air binding, or abnormal noise during the test.

Isolation Valves and Hydronic Controls

• Isolation valves installed at required locations
  Verify isolation valves are present at the locations required by the design or commissioning plan.
• Isolation valves fully open during normal operation
  Confirm isolation valves serving the inspected loop or terminal unit are in the correct operating position.
• Isolation valves operate smoothly and do not leak
  Exercise the valve as needed and verify there is no visible leakage, binding, or damaged stem/handle condition.
• Valves and flow direction are labeled or identifiable
  Confirm the inspected valves are labeled or otherwise clearly identifiable for maintenance and emergency isolation.

Deficiencies, Corrective Actions, and Sign-Off

• Deficiencies documented with location and impact
  List any deficiencies, non-conformances, or critical items found during the inspection, including exact location and operational impact.
• Corrective actions assigned
  Document the corrective action, responsible party, and target completion date for each deficiency.
• Inspector signature
  Inspector sign-off confirming the commissioning record is complete and accurate.