Third generation of software for fan coil units

Ability Projects has applied the third generation of its Matrix controls strategy to its Trojan 270, Altas 235 and Slimline 190 fan coil units as a further step towards the incorporation of Matrix to its entire product range.

The Matrix system has self-setting air volumes and now includes selfsetting water flow rates and selfcorrecting water flow rates. The air volume side of a Matrix fan coil is fairly simple in that the ductwork system with which the fans interact is small and contained.

The hydraulic side, with pressure independent characterised control valves, represents a different situation. Each Matrix PICC valve sits within the hydraulic system of the building, a much larger entity that includes pipework, other HVAC products, valves, pumps, strainers, de-aerators and water of varying quality. PICC valves must perform accurately despite these influences.

During commissioning all external influences need to be examined, air drained from the system and normal housekeeping rules followed. The new Matrix 'Self-Correcting' routine introduces a strategy loop, a software code that monitors the performance of the fan coil unit and temporarily adjusts the water flow rate upwards or downwards if it senses the unit is struggling. If something in the system starts to divert water from the fan coils they will self correct. This feature in effect compensates for varying water supply temperatures.

The main benefit of Matrix remains its ability to monitor and then adjust any aspect of the fan coil remotely; including water flow rates.