The Chiller and Dry Air Cooler replacement project at 10 Grosvenor Street presented several challenges, including the lifting of the Dry Air Cooler units onto the roof, 4 stories high, also the manual handling challenge of the main chillers themselves into the basement chiller plant room. Since 2018, Polyteck has been a dedicated FM contractor for this 65,000 sq ft High Profile office space, committed to the functionality and tenants’ comfort. We have recently completed another successful project to replace the end-of-life boilers as well as being responsible for the scheduled maintenance for HVAC, Fire Alarms, Life Safety, Lighting, and all statutory equipment maintenance to maintain a duty of care to the operation of the building. We successfully installed the Two Commercial Chillers in the basement before arranging the labour intensive part of the project, to crane lift the two Dry Air Coolers onto the roof. We successfully completed the replacement and commissioning procedure within the allotted time and within the customers financial budget.
Scope of the Chiller Replacement Project
The scope was decided due to the Chiller and Dry Air Coolers being due for replacement within the ongoing life cycle plant replacement, including design, purchasing, managing, installation, and commissioning of the Chillers and Dry Air Coolers. As an experienced facilities management contractor, we possess the Skills, Experience, Knowledge, Resources, and Technical Team required for its execution. Essential for the execution was the utilisation, as much as possible, of the already existing piping and ductwork system and the selection of the most suitable, Energy-efficient and Sustainable Chiller equipment for the property. Another task involved integrating it with the current Building Management System (BMS).
Execution of the Chiller Project
We opted for the robust Guntner Flat Vario Dry Air Coolers, known for their resistance to heavy weather and wind loads that can occur on high rise roofs. Additionally, their customizable features, including hinged fan plates and optimised heat exchangers, allowed for a tailored solution to suit the property.
The real challenge, however, lay in elevating the two heavy units onto the rooftop. Employing a crane with the appropriate lifting capacity, we planned the operation diligently with partner companies to make the transition
of the old unit off of the roof and installation of the new units back onto the same footprint plinths. Due to limited access, the only feasible approach involved lifting the units directly from the front of the building on Grosvenor Street. Stringent safety protocols were paramount, a road closure was sort and approved and the area was secured.
to ensure the safety of personnel and equipment. With careful planning and execution, our team successfully manoeuvred the Dry Air Coolers into their designated positions, paving the way for the next phase of the project.
Following the elevation, our skilled technicians connected the new Dry Air Coolers to the existing piping system of the building. This seamless integration involved interfacing the units with the building’s BMS to ensure centralised control and optimization. Finally, we conducted thorough testing and commissioning procedures, ensuring the entire system functioned flawlessly before handing it over to the client with complete satisfaction.
