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Housing Association

Chemical-free for new build Using a chemical-free approach at the pre-comm stage through the life of the asset, ensures you are giving your building the best protection possible against corrosion and bacteria. By controlling the dissolved oxygen, pH and conductivity you are left with clean demineralised water in your network which is the best energy transfer achievable. VDI2035 water also benefit new builds as it can sit in non-circulating systems for longer or during seasonal downtimes without being affected by corrosion. Without particulate in the network you also help optimise the life of the components as they are not being overworked or damaged by corrosive water.

New builds often suffer from flash and tidemark corrosion where pressure testing of systems prior to commissioning has systems filled and then drained of raw water. This leaves the contractor to correct the corrosion this often causes, or when. These issues are sometimes masked by poor water treatment practices, leaving the asset owner to inherit problems that become obvious at the end of the defect period. A chemical-free approach to a pre-comm cleaning which does not allow draining of the system helps avoid these later issues with these types of corrosion.

Because of the stringent water quality levels achieved using VDI2035 principles we avoid the problems that arise with differing water qualities when connecting phases on new build developments. This is the same reason that it avoids connection delays to potential 3rd party district heating networks which have their own stringent water quality requirements for secondary connections.

Retrofitting Our Solution We have worked with many of our clients in initially solving poor water quality in existing closed loop networks before being specified onto their new build projects. With retrofit we will clean through the system and then go onto protect and maintain the system water against corrosion and bacteria.

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