About the job

HVAC Commissioning Engineer – (CDU-50) | Ajman, UAEWe are looking for an experienced HVAC Commissioning Engineer to support the commissioning and onsite activities of a Coolant Distribution Unit (CDU-50) at a data center project in Ajman, United Arab Emirates.

• Position DetailsPosition: HVAC Commissioning Engineer – CDU-50
• Location: Ajman, UAE
• Duration: 6 months

• Key ResponsibilitiesL2 – Pre-CommissioningVerify installation of primary and secondary piping, hydraulic components, and electrical connections.
• Check wiring, terminations, grounding, mounting, and overall installation quality.
• Verify completion and adequacy of system flushing.
• Conduct comprehensive visual and mechanical inspections for defects, leaks, damage, and installation issues.
• L3 – Start-Up & CommissioningPerform mechanical and electrical commissioning checks.
• Verify piping installation, flow direction, and compliance with design requirements.
• Conduct power supply, voltage, phase sequence, grounding, and protection checks.
• Validate sensors, controls, calibration, and operational readiness.
• Perform system filling, flushing, air purging, and hydraulic balancing.
• Test pumps and VFDs, including rotation, control response, and performance.
• Verify control sequences, alarms, safeties, and interlocks.
• Test BACnet/Modbus communication and BMS integration.
• L4 – Onsite Support / SATSupport CDU testing using the recommended Site Acceptance Test (SAT) procedure.
• Verify cooling operation, pump functionality, coolant circulation, temperature and pressure control, alarms, and operational performance.
• Monitor system operation through the CDU HMI.
• Record operating parameters, alarms, temperatures, pressures, flow rates, pump status, and valve positions.
• Extract event/alarm logs where supported.
• Prepare commissioning/test reports documenting results and key HMI readings.
• L5 – Onsite SupportProvide standby support for CDU operation.
• Perform immediate troubleshooting and support in case of abnormal conditions or system alarms.

• Ideal CandidateProven experience in HVAC commissioning, preferably with CDU / cooling distribution systems in data center or mission-critical environments.
• Strong knowledge of chilled water/hydronic systems, pumps, VFDs, valves, sensors, controls, and BMS integration.
• Experience with BACnet/Modbus communications and commissioning documentation.
• Ability to troubleshoot mechanical, electrical, controls, and hydraulic issues onsite.
• Strong understanding of L2/L3/L4/L5 commissioning activities.
• Willingness to work onsite in Ajman, UAE for the full project duration.

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