Chilled water piping in Al Marjan Island 

Chilled water piping in Al Marjan Island: local context

Al Marjan Island is a group of reclaimed islands off Ras Al Khaimah's coast developed for resorts, hotels and residential towers, with major hospitality projects under way. Building stock is dominated by hotels and high-rise residential. Several large integrated resort projects are under construction, bringing high-rise hotel and residential towers to what was previously a low-rise emirate, and with them the full range of tower MEP requirements such as pressure zoning, stair pressurisation and high-capacity fire pumps.

• Hotels need central plants, fresh-air dehumidification, hot water with Legionella control and kitchen extract.
• Approvals typically involve the master developer NOC before municipality, Civil Defence and Etihad WE.
• Access over the causeway and limited laydown space on the island mean deliveries of large plant must be scheduled and staged carefully.

Building types we serve in Al Marjan Island

For high-rise towers, the work concentrates on pressure-zoned water and drainage stacks, riser and plant-room coordination, stair pressurisation and a cooling source sized for diversity across dozens of typical floors.

Scope of work

• Installation of steel or pre-insulated mains, risers and branch pipework with supports, anchors and expansion provisions suited to each route.
• Underground pre-insulated chilled-water networks between buildings, with trench coordination, leak detection wiring where specified and protected crossings.
• Isolation, balancing and two-way control valves at coils and risers so individual floors or buildings can be maintained without shutting the plant.
• Strainer and coil bypass arrangements during flushing so debris is collected in temporary screens rather than lodged in new fan coil and AHU coils.

Systems we install

• Automatic air vents, drains and air separators
• Energy meters at building or tenant connections

UAE site and climate challenges

• Exposed roof pipework sits in direct sun for most of the day, so it receives thicker insulation and UV-protective aluminium cladding to limit heat gain, stop insulation breakdown and keep supply water temperature close to plant output.
• Riser shafts open to outdoor air during construction fill with dust and humidity, so insulation is installed only after shafts are closed and pipes are clean and dry, avoiding trapped moisture under the vapour barrier.
• Sub-metering strategy: metering chilled water per tenant or per building allows fair billing and energy tracking, but adds meters, data cabling, integration and periodic verification of meter accuracy.

Relevant Manolia projects

Al Salam Tower, Sharjah

Sharjah · HVAC · Completed

Chiller plant and roof chilled-water network for a 52-typical-floor tower.

Hassani Group factories & HQ, DIP

Dubai Investments Park (DIP) · MEP · Completed

Factory complex, HQ and staff accommodation, all served from one central cooling station.

Frequently asked questions