The 25hours Terminus Nord hotel acquires a Daikin climate engineering installation

Given the obsolescence of the previous premises, which no longer met the most current safety standards, particularly in terms of PMR, and the poor energy performance generated by obsolete equipment, the 25hours group has undertaken a large-scale rehabilitation operation .

In this perspective, an important part of this work concerned the installation of VRV 3 tubes with energy recovery to provide both heating and cooling of the rooms and living spaces of the hotel. The installation was entrusted to the company Derichebourg.

Installation of 25 VRV IV connected to 262 indoor units

Daikin solutions equipped the hotel with the initial brand using VRV solutions from a previous generation. These only offered the cooling function, heating being provided in the rooms by water radiators supplied by a boiler.

The new owner of the hotel therefore turned to the recommendations of the design office and Daikin, who knew how to take his requirements into account, for the installation of a system capable of simultaneously providing heating and cooling, contemporary and discreet design and significant energy performance.

At the end of 26 months of renovation for an operation conducted in TCE (all trades), the hotel group manages to create a refurbished and perfectly isolated establishment on a total surface of 10 m² offering 800 rooms. A major structural phase was necessary to create in particular the large patio, 236 m high in the entrance of the building, positioned exactly opposite the entrance to the Gare du Nord.

The Daikin installation implemented for the equipment of the rooms and rooms for collective life such as the bar area, the restaurant and the meeting rooms concerned the installation of:

• 22 VRV IV 3 REYQ-T tubes: 3 size 10, 5 size 12 and 14 size 8.
• 3 VRV IV RXYQ-T without continuous heating: 2 of size 12 and 1 of size 8
• 237 ducts at low pressure,
• 24 ducts at medium pressure
• 8 FXSQ extra-flat cassettes
• 239 selection boxes (allowing simultaneous heating and cooling)

The VRV groups are positioned on the roof, sheltered from neighboring buildings.

Equipment that fits perfectly into the cosmopolitan design of the hotel

Under the influence of the famous architect and designer Axel Shoenert, the decor of the Terminus Nord hotel found its inspiration in African and Indian cultures. The living spaces fitted out in a melting-pot way mix different artistic trends and give pride of place to vintage, old-time cinema and the circular economy with the integration of objects created on the basis of recycled products, such as luggage carriers made from old tires. The design of the Daikin solutions and the fitting work of the Derichebourg company enabled the equipment to be perfectly suited to the hotel environment, which is so particular.

Whatever the outside temperature, interior comfort is guaranteed in all rooms, despite varying surface areas. To meet the needs of customers from all walks of life, 3-tube energy recovery VRVs provide simultaneous heating and cooling.

All of the indoor units fitted to the hotel rooms have been hidden in false ceilings, for total discretion of the heating and air conditioning system, leaving only a simple air grille.

The installation is regulated by the I-Touch Manager system. This provides management with simple management of the hotel's room temperature.

A notable reduction in consumption: a first observation more than conclusive

25 hours has set itself an energy saving program for all of its hotel references, leading the technical management to adopt a Daikin system.

At the end of a full year of operation of the new 25hours hotel, the observation is clear: the energy savings are very real. There is a marked reduction in the consumption of CPCU, which has been divided by 2, between the old boiler installation and the heat pumps, as well as electricity due to the improvement in the insulation, despite the operation of the heat pumps and the increase in the number of light points.

The technical department plans to carry out a more precise energy balance in order to further optimize its consumption.