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WILD AIR COOLING The purpose of this methodology is to outline wild air cooling provision to protect the installations/interior Development Project Phase-IV in Zone Zone S09/S10/S11. fixtures/furniture’s etc. at Jabal Omar Development Upon availability of power to the building, the following activities shall be carried out sequentially for wild air cooling. The LV panels shall be pre-commissioned & commissioned in line with the approved procedure. The LV panels feeding the chillers shall be pre-commissioned & commissioned in line with the approved procedure. The MCC feeding the chilled water pumps shall be pre-commissioned & commissioned in line with the approved procedure. All starter panels/VFDs for pumps & AHUs shall be pre-commissioned & commissioned in line with the approved procedure. NOTE: Contractor shall take the handover of
commissioned installations/equipment.
Procedure 1. All the VFDs shall be by-passed during the start-up of the pumps & AHUs and run in star/delta starter mode. 2. The Chilled Water pumps shall be pre-commissioned & temporarily started in line with the approved procedure. 3. The AHUs at the respective floors shall be pre-commissioned & temporarily started in line with the approved procedure. 4. Flushing shall be completed prior to start the AUS, FCU. 5. Upon start-up of AHUs, the chillers shall be pre-commissioned & temporarily started in line with the approved procedure. 6. The AHUs for the remaining floors shall be started after starting of the c hillers. 7. Chiller plant manager, control, VFDs & BMS will be by-passed during wild air. 8. Air Balancing shall be carried out later & shall not constitute a part of wild air cooling. 9. Control valves will be isolated & the chilled water flow shall be adjusted through the by- pass. 10. Temporary filters shall be used in the AHUs during wild air. 11. Plant rooms & office areas shall be cleaned and all doors to rooms and shafts shall be installed. 12. All remaining works of chilled water system (piping & insulation) shall be completed prior to wild air. 13. All condensate drain pipes horizontal & vertical in conditioned & unconditioned area shall be fully insulated. 14. Start-up of equipment & system is temporary only to improve the working condition of the contractor in office floors. Full commissioning shall be done at a later stage when all systems are fully completed & ready for commissioning. 15. Contractor shall be responsible to pro tect & maintain all equipment, systems, networks, accessories, etc., at no extra time or cost impact to company by using trained personnel continuously until full commissioning has been successfully carried out & officially handed over to company / end user. 16. All Guarantees & Warranties shall start from the date of official handing over. 17. Installation, pre-commissioning & commissioning of heat exchangers is the responsibility of client (JODC), hence client/contractor to ensure that heat exchangers with complete piping are installed & commissioned.
