Technical description

A modern building automation system is used for controlling the internal climate and operation of utility systems.

Heating system

The heat source of the building comes from district heating. The heating system is controlled according to outdoor temperature. The building is equipped with low-temperature radiators.
Radiator heat output is adjusted in office, commercial and catering premises with room heating/cooling controllers and electric actuator valves.

Ventilation

The building includes central ventilation equipment, located in the technical rooms in semi-basement and 7th floor (separate ventilation is provided for the large kitchen and the office area on the 7th floor). There are also extraction systems for toilets and lifts. The building has no smoking rooms. 
The calculated air change rate for office premises is 2 l/sec per m2 or 10 l/s per person.
The systems on each floor are individually controllable and are divided in separate adjustment zones depending on different sunlight intensity on the north-western and south-eastern facades of the building. The system has a demand-based operating principle (controlled by air CO2 level), with additional sensors in meeting rooms.

Cooling

The building is designed with a free cooling water-cooling system. Cooling is distributed to rooms through chilled beams, as this insures the best indoor climate. Fan coils are installed rooms with higher cooling demand. 
The server and switchboard room of the building is designed with freon cooling systems.

Water supply and sewerage system

The municipal water supply system is used for utility and drinking water. Hot water is produced in the heating substation. The entire building is equipped with a system of fire control valves.
All individual office spaces have their own remote reading water meters.
Efficient water fixtures significantly reduce water consumption. A leakage detection system is installed for rapid discovery of potential water leaks.

Automation

A remotely managed central building automation system is used in the building to meet the higher energy efficiency standards. The following systems are automated: ventilation, heating, cooling, power supply, and total consumption monitoring, incl. electricity, heat and water.
Automated room control prevents simultaneous operation of heating and cooling in the same room. 
Indoor climate can be continuously monitored and adjusted through the building automation system both by users on the room controller panel and by the building manager using an online interface.

Power supply

Each rental space is equipped with a switchboard, located in a separate room with a rack for weak current equipment and possible UPS device. No central UPS system has been designed for the building. The switchboards of each rental space include sections in which the tenant can connect a UPS device. UPS is not included in the standard equipment to be provided by the lessor.

Dual-tariff commercial electricity meters of rental spaces are located in the distribution board of each floor.
The meters are connected to the building automation system and are dimensioned for large HVAC systems and light advertising. The meters are equipped with a programmable clock and have remote reading functionality. 
Power supply to commercial and office premises is mostly provided through socket posts extending from the floor to cable racks. Each workplace has 6 strong current (SC) sockets (incl. 2 sockets with UPS capability) and 2 weak current (WC) sockets. Secretary workplaces and meetings rooms have 6SC+2WC sockets. Meeting rooms are provided with floor boxes with strong current sockets and cases for weak current sockets. Wiring from floor boxes to a suitable wall is installed in protective wire-ways (separate for strong and weak current cables).
The calculated density of workplaces in the office area is 1 workplace per 10 m2 of floor space. Centennial also offers the option of connecting essential systems on rental premises with a guaranteed power supply from a diesel generator. The system is capable of restoring power supply to systems within 1 minute after a power cut.

Lighting

The lighting of outdoor and common areas is provided through LED lamps. The lamps are connected to the building automation system and are controlled via a timer program and occupancy sensors.
The standard solution for lighting the office areas consists of high-frequency T5 light tubes.
The main lighting of rental premises is based on suspended fluorescent lamps, providing direct and general lighting, ensuring low glare at workplaces (computer screens, desks). The design also envisages the use of LED downlights. The lighting control of rental spaces is designed in small groups in accordance with requirements (in case of main lighting, 4 lamps in a group covering about 4 workplaces). 
The fluorescent lamps used are generally high frequency (> 30 kHz) lamps with electronic ballast and A2 energy efficiency rating.

Weak current

The building includes an analogue-addressable automated fire alarm system, covering commercial premises and common areas and capable of sending a fire alarm notice to a rescue centre. 
The central unit is installed at the workstation of the building administrator. The type of detectors is selected according to the intended purpose of each room to ensure quick response to potential fires and reduce the probability of false alarms. Optical smoke detectors are used in most cases.

Communication systems

Centennial office building can be connected to 2 different communication providers via optical cable. 
The data communication network of office premises complies with CAT6 requirements. The floors/rental premises of the building include equipment cabinets for connecting different consumers. The data and telephony services are provided to each workplace via one dual 2xRJ45 connector. Secretary workplaces are provided with double-capacity connections (2x2xRJ45). Meeting rooms have connections for one workplace. Meeting rooms have a 2xRJ45 connector for a LCD screen.
The active equipment for weak and strong current should be procured and installed by the tenant.

Security alarm system, access system and video surveillance
The building is equipped with a security alarm system with an integrated access system. 
The access system restricts access of staff members and visitors to zones with different security ratings depending on the access rights.
The button panels for floor selection in visitor lifts are integrated in the building access system, enabling to use a door access card for floor selection.

The perimeter, entrances, lobby and parking area of the building are equipped with online video surveillance cameras.

Other fixtures

Mailboxes are installed at the building entrance for offices and commercial premises. Each tenant is responsible for procuring the necessary fixtures (incl. furniture) and equipment for their office or commercial premises.
 

info

Taavi Reimets

taavi@novira.ee

(+372) 58 58 09 06