SITC of Chilled Water HVAC System
(Supply, Installation, Testing & Commissioning)
A Chilled Water HVAC System is commonly used in big commercial, healthcare, hospitality, IT, and industrial projects. It is known for its efficiency and ability to scale. SITC means providing the system from start to finish. This includes supplying approved equipment and giving over a fully working plant that meets design performance.
1️⃣ Supply (S)
Supply includes procurement and delivery of all consultant-approved items:
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Chillers (air-cooled / water-cooled)
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Primary & secondary pumps
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AHUs / FCUs with chilled water coils
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Piping & fittings, valves, strainers
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Insulation, cladding, supports
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Controls & BMS accessories
Key controls: Make approval, capacity/ESP verification, accessories check, and proper storage/handling at site.
2️⃣ Installation (I)
Installation converts drawings into a working system—accuracy here decides performance.
Chiller & Plant Room
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Foundations, alignment, vibration isolation
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Maintenance clearances and safe access
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Power, piping, drainage routing
Chilled Water Piping
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Correct sizing and routing per hydraulic design
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Qualified welding/jointing practices
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Pressure testing & flushing before insulation
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Vapor-barrier insulation to prevent condensation
AHUs / FCUs & Duct Interface
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Service access for filters/coils
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Proper coil connections and drain traps
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Airtight duct connections and vibration isolation
Electrical & Controls
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Power and control wiring
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Interlocks (chillers–pumps–AHUs)
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BMS integration readiness
3️⃣ Testing (T)
Testing ensures safety and readiness before operation:
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Hydrostatic testing of piping
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System flushing and cleanliness checks
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Electrical insulation/continuity tests
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Pre-commissioning equipment checks
4️⃣ Commissioning (C)
Commissioning proves the system performs as designed:
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Chemical cleaning (if specified)
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Pump and chiller functional tests
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Water flow balancing
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Verification of ΔT, capacity, and controls logic
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Performance testing under load
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Joint witnessing and sign-off
Outcome: Stable temperatures, correct flows, energy-efficient operation.
Coordination & Documentation
Successful SITC relies on close coordination with consultants & PMC:
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Site feasibility reviews and clash resolution
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Compliance to approved drawings/specs
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O&M manuals, test reports, as-built drawings
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Operator training and smooth handover
Applications
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Commercial offices & IT parks
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Hospitals & healthcare facilities
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Hotels & convention centers
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Data centers
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Industrial & institutional buildings
Why SITC Matters
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Single-point responsibility
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Fewer interface issues
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Predictable timelines and costs
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Better efficiency and reliability over lifecycle
In Simple Words
SITC of a Chilled Water HVAC System means delivering a complete, tested, and ready-to-use cooling system.
