Projects dedicated fan coil unit able to provide heating and cooling to satisfy the demand in the room .
These fan coil units are independent of the central system and open plan areas in its vicinity . Boardroom air conditioning set points can each be set individually based on room load and desired occupant comfort or can be controlled via the building management system ( BMS ).
Units can be switched off if boardrooms are unoccupied , thus promoting energy efficiency . Treated fresh air is supplied to the FCUs . If FCU cooling capability is disabled , fresh air introduced to the space is de-humidified and cooled / heated to neutral conditions .
1
2
Ventilation Fresh air supply to the building is provided to all habitable spaces in the building in accordance with local regulations – SANS10400 Part-O . Fresh air is introduced to the building via dedicated constant volume fresh air fans supplying each air handling unit which serves most of the floor space .
Each fan set is equipped with a filter bank at the intake . Powered fresh air supply was implemented to ensure minimum fresh air flowrates are supplied to the space regardless of 1 and 2 : Comparison of 3D modelling vs as built .
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Glycol management system .
Typical fresh air fan arrangement .
www . hvacronline . co . za RACA Journal I November 2020 27