Contractors have specific commissioning responsibilities throughout construction, from submittal provision through deficiency correction and training support, responsibilities detailed in commissioning specifications.
Submittal provision requires contractors submit equipment and control system technical data for commissioning authority review before equipment purchase. Contractors respond to CxA review comments, providing clarifications or revised submittals addressing identified concerns.
Contractor commissioning coordination tasks may include:
• Attending and participating in Factory Witness Testing
• Developing test procedures for equipment and/or systems that may require assembly at an integrator site before being shipped to the project site.
• Attending commissioning meetings and coordinating with the CxA schedule
• Providing site access to review observations, checklists, and test scripts.
• Notifying CxA of key installation milestones requiring observation
• Coordinating testing schedules to ensure equipment availability
• Designating commissioning points of contact for each subcontractor
Specifications incorporation requires contractors to include commissioning requirements in subcontracts. Mechanical, electrical, and controls subcontractors must understand and budget for commissioning activities, prefunctional checklists, testing support, deficiency correction, and training.
Pre-functional checklist completion represents significant contractor effort. Before functional testing, contractors must:
• Complete detailed checklists for every commissioned equipment
• Verify installations per specifications and submittals
• Perform manufacturer-required startup procedures
• Test safety controls and protective devices
• Confirm control programming correctness
• Submit completed checklists with supporting documentation
This systematic checkout ensures equipment readiness for functional testing, preventing wasted testing time on non-functional systems.
Testing support during functional testing requires contractors:
• Provide qualified technicians familiar with installed systems
• Have necessary tools, laptops, and access credentials available
• Operate equipment as directed during testing
• Monitor equipment during testing for unsafe conditions
• Document test procedures and results
• Respond immediately to identified problems requiring correction
Contractors are not passive observers during testing but active participants supporting test execution.
Deficiency correction obligates contractors to:
• Review deficiency reports from functional testing
• Develop correction strategies for identified issues
• Implement corrections within agreed timeframes
• Request retesting after corrections are completed
• Provide documentation of corrective actions taken
Timely deficiency correction prevents delayed substantial completion and owner acceptance.
Documentation provision requires contractors to supply:
• Complete O&M manuals for all equipment
• As-built drawings reflecting field conditions
• Warranty documentation with registration
• Systems manual input (contractor-specific information)
• Startup reports and factory test data
• Spare parts lists and special tools
• Control system documentation and programming backups
Training delivery obligates contractors to:
• Provide comprehensive operator training on installed systems
• Cover equipment operation, maintenance requirements, troubleshooting, safety procedures, and control system operation
• Coordinate training schedules with the commissioning authority observation
• Provide training materials and documentation
• Repeat training if operator turnover occurs during the warranty period
Warranty period commissioning support continues beyond substantial completion. Contractors must:
• Participate in seasonal testing during the warranty period
• Address deficiencies identified during post-occupancy commissioning activities
• Support 10-month commissioning review for LEED or other certifications project are pursing
• Respond to issues identified through ongoing monitoring
Meeting these responsibilities requires contractor commitment and coordination but ensures proper system installation, operation, and acceptance. Contractors who view commissioning as a partnership rather than a burden achieve smoother projects with better outcomes.
For commissioning processes that effectively coordinate contractor responsibilities and support project success, contact Catalyst Commissioning Group at info@catalystcx.com.