A school project involved a newly installed pair of Remeha 320s, which presented many issues. We were called to a local school a few years ago that had recently replaced its boilers but lacked proper commissioning and surveys.

There had been no heat loss calculation, nor any data on flows and velocities. The pumps operated at full capacity, and the boilers had not been matched to the system.

Problems also arose with the hot water supply from a separate Andrew cylinder and faulty expansion vessels. We had no master plan for the building, which we addressed with the aid of Google Maps.

We compiled a series of recommendations and observations, starting with water quality and filtration—none were present—and a structured list of suggested works, all within a very tight budget.

A large site in North London with over two hundred flats. These properties had HIUs and a poorly designed plant room featuring three 300 kW condensing boilers with minimal or no control and an outdated pipe layout. Again, there were no drawings or specifications, so we began by conducting a survey and compiling a list of recommendations. The recurring issues included water quality, lack of filtration, design capacity and flow problems, boiler commissioning, pump speeds, and sizing. Many pumps were oversized, and everything was working against achieving an acceptable delta T.

An incremental budget was allocated, and work has been ongoing. The building’s condition is gradually improving, with upgrades continuing.

Another considerably more complex case involved a very prestigious site in King’s Cross. A beautiful new building where the contractors had gone bankrupt, leaving a troublesome series of problems with incomplete or faulty installations—fan coil and under-floor rewiring, HIU reconfiguration, and the commissioning of chillers and the energy centre. It was a fourteen-week non-stop rescue mission involving coordination between different trades and the new property managers. Though stressful, the effort was ultimately successful.

If you’d like to hear the whole story, please get in touch.

Finally, a twenty-floor building near Docklands, eight years old. Where do we start?
First, six Hamworthy Fleet boilers come into focus. Initially, we were only informed that they had already replaced their heat exchangers twice. This marked the beginning of a complex journey, which started with a plan to keep everything operational and an ongoing approach to a system that was never properly configured. We presented an outline survey and plan to the tenants, managing agent, and building owners for discussion, while implementing a temporary regime to sustain some functionality.

Through careful juggling, we successfully introduced hydraulic separation, chemical-free water treatment and filtration, refurbished the boilers, and significantly upgraded the controls. Further details are available on request.