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Work sequence

Commissioning work sequence

Commissioning proves that installed systems work together under realistic operating conditions. It should be planned as evidence-based testing, not as a last-day defect hunt.

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Connected product pages

This sequence is connected to the stage calculator, checklist and mistake-cost pages so planning, execution and cost risk stay in one system.

Recommended sequence of work

01

Prepare test plan and readiness checklist

Define what will be tested, by whom and against which acceptance criteria.

  • List systems, equipment, rooms, zones and required test records.
  • Confirm power, water, drainage, access, controls and safety conditions.
  • Close obvious installation defects before formal testing starts.

Hold point: Functional testing should not start until readiness checklist and test forms are prepared.

Tools, equipment and access: Test plan, Commissioning forms, Equipment schedule, Access keys

02

Run functional tests and balancing

Verify actual performance instead of visual completion.

  • Test pumps, drainage, pressure, electrical loads, controls and safety shutoffs.
  • Measure airflow, temperature response, condensate removal and equipment noise.
  • Record failed tests with owner, cause, correction and retest date.

Hold point: Systems should not be accepted until failed tests are corrected and retested.

Tools, equipment and access: Pressure gauge, Clamp meter, Anemometer, Thermometer, Sound meter

03

Compile evidence and release for handover

Convert tests into records the owner can use later.

  • Collect signed test sheets, photos, balancing results and equipment data.
  • Update defect list with remaining items and acceptance status.
  • Transfer commissioning evidence into the handover pack.

Hold point: Handover should not proceed until test evidence, retest results and open defects are clearly separated.

Tools, equipment and access: Document register, Photo log, Defect tracker, Asset schedule

Tools, equipment and access

Test instruments

  • Pressure gauge
  • Clamp meter
  • Anemometer
  • Thermometer
  • Sound meter

Records

  • Commissioning forms
  • Defect tracker
  • Photo log
  • Asset schedule

Access and controls

  • Access keys
  • Control app
  • Panel schedule
  • Valve tags

Planning material consumption norms

Consumption ranges are planning benchmarks. Final quantities must be checked against drawings, specifications, local codes and supplier data sheets.

Material or resource Basis Planning range Unit Planning note
Commissioning forms System group 1 form/group Separate HVAC, plumbing, electrical, pumps and controls.
Airflow readings Diffuser or grille 1 reading/terminal Needed for balancing evidence.
Pressure test record Pressure zone 1 record/zone Attach instrument value, duration and pass/fail.
Retest record Failed test item 1 record/item Makes defects auditable.

Quality gates before moving forward

Related glossary terms

Airflow balancing

Measurement and adjustment of air volumes so a ventilation system performs as intended.

Inspection and test plan

A quality control plan that lists inspections, tests, acceptance criteria, hold points and required records for a work package.

As-built documentation

Final record set showing what was actually installed, routed, adjusted, and handed over on site.

Indoor air quality

Practical measure of how healthy, comfortable, and usable indoor air feels for occupants.