Client: St Joseph Catholic School
Year Completed: 2016
Duration: 4 weeks
We were contacted by the head teacher of St Joseph Catholic school in Hertford. The school had been experiencing hot water and heating problems for several years. The head teacher asked us to improve the general efficiency and reduce the carbon footprint for the building to meet modern standards and projected future regulations.
We were asked to inspect and offer a solution to their ongoing issues then undertake investigative work by carrying various temperature and pressure tests throughout the system, asbestos tests, water pressure and gas meter sizing and pipe sizing to ensure the new boilers would have the correct flow rate. We also carried out electrical tests.
We concluded the cast iron section had failed on the heat exchanger and was leaking. The central heating boiler and the parts were obsolete and wouldn’t conform to modern regulations and efficiency requirements for a new system.
The hot water flow return temperature was not hot enough which could be a potential legionella risk due to failing hot water chlorifier scaled up and corroded.
Work Carried Out
The central heating was designed and fitted that was 97% efficient. The energy consumption could also be metered.
The secondary return hot water temperature problem was eliminated. The school had fully controlled central heating and hot water throughout and had a consistent supply of hot water on demand.
The new heating system reduced the Schools energy consumption for heating and hot water by nearly 50% offering thousands of pounds in savings on utility bills.
The carbon footprint was also significantly reduced and met current and future predicted regulations.
The complete system took 4 weeks from start to finish including removing the existing hot water system.
Hamworthy boilers have since used this project as a case study for their magazine and website to highlight how a well designed and specified plant room can offer large savings and consistent heating for many years for their clients. “