Client: Harrodian Independent School
Location: Barnes, London
Year Completed: 2017
Commercial Boiler: Hamworthy
Duration: 4 weeks
We were contacted by the business manager of the school to discuss the ongoing problems of the schools commercial heating system and boilers and lack of hot water.
We were asked to inspect and offer a solution to their ongoing issues then undertake investigative work by carrying out various temperature and pressure tests throughout the system along with asbestos tests, water pressure, gas meter sizing and pipe sizing to ensure the new boilers would have the correct flow rate.
We also carried out electrical tests. This system was designed in excess of 30 years ago and worked on a reverse return pipework which is very rare.
We found two of the four existing boilers were working and two of the heat exchangers on the other two had failed. The existing boilers were undersized for the size of the school so the radiators were only luke warm throughout the school.
Work Carried Out
We designed the plant room and specified the boilers to the correct size, checked the gas supply and water. The central heating was designed and fitted to achieve 97% efficiency.
The school had fully controlled central heating and hot water throughout with a consistent supply of hot water on demand. We upgraded the plate heat exchanger system which was undersized to ensure the correct heat output was given by three Hamworthy purewell 180 cast iron condensing boilers.
The complete system was installed and previous system removed within 4 weeks