Chilled water piping in Ajman 

Chilled water piping in Ajman: local context

Ajman is the smallest emirate by area, with a compact city of mid- and high-rise residential towers along the corniche and Al Nuaimiya-type districts, plus the Al Jurf industrial zone towards the Emirates Road. Much of its residential stock is value-oriented housing for people commuting to Sharjah and Dubai, with hotels along the beachfront and workshops and warehouses inland. MEP budgets are often tighter than in Dubai, which puts the emphasis on robust, maintainable systems such as packaged and split units, VRF and straightforward chilled-water plants. Manolia has delivered HVAC and design work here.

MEP drawings are typically submitted to Ajman Municipality and Planning as part of the building permit, with Civil Defence (Ministry of Interior) approving fire and life safety drawings and inspecting before occupancy. Etihad WE handles electrical load approval and connections. Requirements vary between plots and zones, so the sequence is confirmed for each project.

• Electricity and water are supplied by Etihad Water & Electricity (formerly FEWA), whose load approval, transformer room and metering requirements differ from DEWA and SEWA and must be checked before the electrical design is frozen.
• Fire and life safety approvals go through Civil Defence under the Ministry of Interior, applying the UAE Fire & Life Safety Code; early submission avoids delays on residential towers where fire pumps and tank volumes drive basement layouts.

Building types we serve in Ajman

For hotels and serviced apartments, the work concentrates on quiet guestroom fan coils, kitchen and laundry extract, hot-water generation at scale, BMS supervision and phased handover to the operator.

For malls and retail centres, the work concentrates on large-volume air handling, tenant-ready chilled water or refrigerant capacity, smoke extraction for atriums and car parks and food-court exhaust.

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.
• Hydrostatic pressure testing of each section before insulation, followed by full system test before connection to the plant.
• Closed-cell insulation with vapour barrier, aluminium cladding outdoors and labelling with flow direction.
• 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

• Pre-insulated buried pipe networks between buildings
• Pressure independent control valves at fan coils and AHUs
• Y-strainers, flushing bypasses and dirt separators at plant connections

UAE site and climate challenges

• Large temperature differences between installation in summer heat and cold operating conditions cause expansion and contraction, so anchors, guides and loops are positioned to protect long risers, branch take-offs and equipment connections.
• 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.

Decisions to make early

• Steel versus pre-insulated or alternative pipe systems: welded or grooved steel remains standard for risers and plant rooms, while pre-insulated pipe suits buried routes between buildings and saves on-site insulation labour.
• Two-pipe versus four-pipe distribution: almost all UAE buildings need cooling only, so two-pipe is standard, but hospitals, laboratories or palaces needing reheat for humidity control may justify a separate heating loop.

Relevant Manolia projects

MEP Design

42-building complex, mall & hotel, Ajman (design)

Ajman · MEP Design · Design

MEP design for a mixed-use masterplan including a 5-star hotel.

Al Salam Tower, Sharjah

Sharjah · HVAC · Completed

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

Frequently asked questions